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Climate and Average Weather Year Round in Gilbert Arizona, United States

In Gilbert, the summers are sweltering and dry, the winters are cool, and it is mostly clear year round. Over the course of the year, the temperature typically varies from 41°F to 105°F and is rarely below 33°F or above 111°F.

Based on the beach/pool score, the best times of year to visit Gilbert for hot-weather activities are from late May to early July and from late August to late September.

Climate in Gilbert

comfortablewarmhotswelteringhotwarmJanFebMarAprMayJunJulAugSepOctNovDecNowNow85%85%62%62%clearovercastprecipitation: 1.2 inprecipitation: 1.2 in0.1 in0.1 inmuggy: 26%muggy: 26%0%0%drydrybeach/pool score: 7.9beach/pool score: 7.90.30.3
Gilbert weather by month. Click on each chart for more information.

The hot season lasts for 3.7 months, from May 28 to September 18, with an average daily high temperature above 97°F. The hottest month of the year in Gilbert is July, with an average high of 105°F and low of 82°F.

The cool season lasts for 3.2 months, from November 19 to February 27, with an average daily high temperature below 73°F. The coldest month of the year in Gilbert is December, with an average low of 42°F and high of 66°F.

Average High and Low Temperature in Gilbert

Average High and Low Temperature in GilberthotcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°F110°F110°FJan 465°FJan 465°FJul 2105°FJul 2105°F41°F41°F80°F80°FMay 2897°FMay 2897°FSep 1897°FSep 1897°FNov 1973°FNov 1973°FFeb 2773°FFeb 2773°F69°F69°F73°F73°F47°F47°F47°F47°FNowNow
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.
AverageJanFebMarAprMayJunJulAugSepOctNovDec
High 66°F70°F77°F85°F94°F103°F105°F103°F98°F87°F75°F66°F
Temp. 53°F57°F63°F71°F80°F90°F93°F92°F86°F74°F61°F52°F
Low 42°F45°F50°F57°F66°F75°F82°F81°F73°F61°F49°F42°F

The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in Gilbert

Average Hourly Temperature in GilbertJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNowNowcoldcoldcoldcoldcoolcoolcomfortablewarmhothotswelteringvery coldvery coldcomfortable
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

El Hadjira, Algeria (6,330 miles away) is the far-away foreign place with temperatures most similar to Gilbert (view comparison).

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In Gilbert, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year in Gilbert begins around April 7 and lasts for 3.0 months, ending around July 8.

The clearest month of the year in Gilbert is June, during which on average the sky is clear, mostly clear, or partly cloudy 84% of the time.

The cloudier part of the year begins around July 8 and lasts for 9.0 months, ending around April 7.

The cloudiest month of the year in Gilbert is February, during which on average the sky is overcast or mostly cloudy 37% of the time.

Cloud Cover Categories in Gilbert

Cloud Cover Categories in GilbertclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jun 1385%Jun 1385%Feb 1962%Feb 1962%Apr 774%Apr 774%NowNowclearovercastmostly clearmostly cloudy
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 34%37%30%24%21%16%31%30%17%20%28%33%
Clearer 66%63%70%76%79%84%69%70%83%80%72%67%

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Gilbert varies throughout the year.

The wetter season lasts 8.0 months, from July 6 to March 5, with a greater than 12% chance of a given day being a wet day. The month with the most wet days in Gilbert is August, with an average of 6.3 days with at least 0.04 inches of precipitation.

The drier season lasts 4.0 months, from March 5 to July 6. The month with the fewest wet days in Gilbert is June, with an average of 0.8 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Gilbert is August, with an average of 6.3 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 22% on August 3.

Daily Chance of Precipitation in Gilbert

Daily Chance of Precipitation in GilbertwetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Aug 322%Aug 322%Jun 121%Jun 121%Mar 512%Mar 512%NowNowrain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).
Days ofJanFebMarAprMayJunJulAugSepOctNovDec
Rain 3.5d3.4d3.1d1.5d0.9d0.8d5.1d6.3d3.3d2.3d2.5d3.5d

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Gilbert experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 9.0 months, from July 5 to April 5, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Gilbert is February, with an average rainfall of 1.2 inches.

The rainless period of the year lasts for 3.0 months, from April 5 to July 5. The month with the least rain in Gilbert is June, with an average rainfall of 0.1 inches.

Average Monthly Rainfall in Gilbert

Average Monthly Rainfall in GilbertrainrainJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 in3.0 in3.0 in3.5 in3.5 inFeb 151.2 inFeb 151.2 inJun 60.1 inJun 60.1 inJan 51.2 inJan 51.2 inAug 131.1 inAug 131.1 inOct 210.6 inOct 210.6 inJul 50.5 inJul 50.5 inApr 50.5 inApr 50.5 inNowNow
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 1.1″1.2″0.9″0.3″0.1″0.1″0.8″1.1″0.7″0.6″0.8″1.2″

The length of the day in Gilbert varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 57 minutes of daylight; the longest day is June 20, with 14 hours, 22 minutes of daylight.

Hours of Daylight and Twilight in Gilbert

Hours of Daylight and Twilight in GilbertJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 1912 hr, 7 minMar 1914 hr, 22 minJun 2014 hr, 22 minJun 2012 hr, 9 minSep 2212 hr, 9 minSep 229 hr, 57 minDec 219 hr, 57 minDec 21nightnightdayNowNow
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.
Hours ofJanFebMarAprMayJunJulAugSepOctNovDec
Daylight 10.2h11.0h12.0h13.0h13.9h14.3h14.1h13.3h12.3h11.3h10.4h10.0h

The earliest sunrise is at 5:17 AM on June 11, and the latest sunrise is 2 hours, 15 minutes later at 7:31 AM on January 8. The earliest sunset is at 5:19 PM on December 4, and the latest sunset is 2 hours, 22 minutes later at 7:40 PM on June 29.

Daylight saving time (DST) is not observed in Gilbert during 2024.

Sunrise & Sunset with Twilight in Gilbert

Sunrise & Sunset with Twilight in GilbertJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 115:17 AMJun 115:17 AM7:40 PMJun 297:40 PMJun 29Dec 45:19 PMDec 45:19 PM7:31 AMJan 87:31 AMJan 8daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2024. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in Gilbert

Solar Elevation and Azimuth in GilbertJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AM0000101010102020202030303030404040505050606070000010101010202020203030303040404050506070703380NowNow
northeastsouthwest
Solar elevation and azimuth over the course of the year 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.

Moon Rise, Set & Phases in Gilbert

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

Gilbert experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 2.9 months, from June 27 to September 23, during which time the comfort level is muggy, oppressive, or miserable at least 6% of the time. The month with the most muggy days in Gilbert is August, with 7.5 days that are muggy or worse.

The least muggy day of the year is March 4, when muggy conditions are essentially unheard of.

Humidity Comfort Levels in Gilbert

Humidity Comfort Levels in GilbertmuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 40%Mar 40%Aug 1326%Aug 1326%Jun 276%Jun 276%Sep 236%Sep 236%muggymuggydrydryhumidhumidcomfortablecomfortableoppressiveoppressive
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 0.0d0.0d0.0d0.0d0.0d0.7d5.7d7.5d3.3d0.3d0.0d0.0d

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Gilbert experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 9.5 months, from September 25 to July 10, with average wind speeds of more than 6.5 miles per hour. The windiest month of the year in Gilbert is April, with an average hourly wind speed of 7.3 miles per hour.

The calmer time of year lasts for 2.5 months, from July 10 to September 25. The calmest month of the year in Gilbert is August, with an average hourly wind speed of 5.6 miles per hour.

Average Wind Speed in Gilbert

Average Wind Speed in GilbertwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mphApr 297.4 mphApr 297.4 mphAug 155.5 mphAug 155.5 mphSep 256.5 mphSep 256.5 mphJul 106.5 mphJul 106.5 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph) 6.86.76.87.37.37.16.25.66.26.66.86.8

The predominant average hourly wind direction in Gilbert varies throughout the year.

The wind is most often from the west for 6.5 months, from March 6 to September 22, with a peak percentage of 55% on June 25. The wind is most often from the east for 5.5 months, from September 22 to March 6, with a peak percentage of 54% on January 1.

Wind Direction in Gilbert

Wind Direction in GilbertEWEJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsoutheastnorth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

To characterize how pleasant the weather is in Gilbert throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best times of year to visit Gilbert for general outdoor tourist activities are from mid April to mid June and from mid September to late October, with a peak score in the first week of May.

Tourism Score in Gilbert

Tourism Score in Gilbertbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.57.52.22.27.57.54.04.0NowNow cloudscloudsprecipitationprecipitationtourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best times of year to visit Gilbert for hot-weather activities are from late May to early July and from late August to late September, with a peak score in the third week of June.

Beach/Pool Score in Gilbert

Beach/Pool Score in Gilbertbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.97.90.30.37.67.66.56.5NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationbeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Gilbert typically lasts for 11 months (345 days), from around January 10 to around December 20, rarely starting after February 6, or ending before November 23.

Time Spent in Various Temperature Bands and the Growing Season in Gilbert

Time Spent in Various Temperature Bands and the Growing Season in Gilbertgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Jan 1050%Jan 1050%Dec 2050%Dec 2090%Feb 690%Feb 690%Nov 2390%Nov 23Jul 4100%Jul 4100%NowNowvery coldcoldcoolwarmhotsweltering
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Based on growing degree days alone, the first spring blooms in Gilbert should appear around January 17, only rarely appearing before January 13 or after January 25.

Growing Degree Days in Gilbert

Growing Degree Days in GilbertJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F1,000°F1,000°F2,000°F2,000°F3,000°F3,000°F4,000°F4,000°F5,000°F5,000°F6,000°F6,000°F7,000°F7,000°F8,000°F8,000°FJan 1790°FJan 1790°FApr 4900°FApr 4900°FMay 131,800°FMay 131,800°FDec 317,668°FDec 317,668°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 2.9 months, from April 18 to July 14, with an average daily incident shortwave energy per square meter above 7.4 kWh. The brightest month of the year in Gilbert is June, with an average of 8.4 kWh.

The darker period of the year lasts for 3.2 months, from November 4 to February 10, with an average daily incident shortwave energy per square meter below 4.2 kWh. The darkest month of the year in Gilbert is December, with an average of 3.2 kWh.

Average Daily Incident Shortwave Solar Energy in Gilbert

Average Daily Incident Shortwave Solar Energy in GilbertbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWh10 kWh10 kWhJun 108.5 kWhJun 108.5 kWhDec 233.1 kWhDec 233.1 kWhApr 187.4 kWhApr 187.4 kWhNov 44.2 kWhNov 44.2 kWhFeb 104.2 kWhFeb 104.2 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Solar Energy (kWh) 3.54.45.97.38.18.47.46.76.25.03.83.2

For the purposes of this report, the geographical coordinates of Gilbert are 33.353 deg latitude, -111.789 deg longitude, and 1,234 ft elevation.

The topography within 2 miles of Gilbert is essentially flat, with a maximum elevation change of 46 feet and an average elevation above sea level of 1,237 feet. Within 10 miles is essentially flat (486 feet). Within 50 miles contains only modest variations in elevation (6,759 feet).

The area within 2 miles of Gilbert is covered by artificial surfaces (81%) and shrubs (19%), within 10 miles by artificial surfaces (46%) and shrubs (44%), and within 50 miles by shrubs (84%).

This report illustrates the typical weather in Gilbert, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Gilbert.

For each station, the records are corrected for the elevation difference between that station and Gilbert according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Gilbert is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Gilbert and a given station.

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Gilbert and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

Please review our full terms contained on our Terms of Service page.