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Spring Weather at Monterey Regional Airport California, United States

Daily high temperatures increase by 4°F, from 61°F to 64°F, rarely falling below 54°F or exceeding 72°F.

Daily low temperatures increase by 5°F, from 47°F to 52°F, rarely falling below 40°F or exceeding 55°F.

For reference, on September 12, the hottest day of the year, temperatures at Monterey Regional Airport typically range from 55°F to 69°F, while on January 2, the coldest day of the year, they range from 43°F to 59°F.

Average High and Low Temperature in the Spring at Monterey Regional Airport

Average High and Low Temperature in the Spring at Monterey Regional AirportMarAprMay35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°FWinterSummerMar 161°FMar 161°F47°F47°FMay 3164°FMay 3164°F52°F52°FApr 161°FApr 161°F47°F47°FMay 163°FMay 163°F49°F49°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.

The figure below shows you a compact characterization of the hourly average spring temperatures. The horizontal axis is the day, 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 the Spring at Monterey Regional Airport

Average Hourly Temperature in the Spring at Monterey Regional AirportMarAprMay12 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 AMWinterSummerNowNowcoldcoldcool
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.

Valparaíso, Chile (5,805 miles away) is the far-away foreign place with temperatures most similar to Monterey Regional Airport (view comparison).

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© Esri, et al.

Compare Monterey Regional Airport to another city:

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The spring at Monterey Regional Airport experiences very rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 51% to 27%.

The clearest day of the spring is May 31, with clear, mostly clear, or partly cloudy conditions 73% of the time.

For reference, on February 16, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 51%, while on August 7, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 92%.

Cloud Cover Categories in the Spring at Monterey Regional Airport

Cloud Cover Categories in the Spring at Monterey Regional AirportMarAprMay0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%WinterSummerMar 149%Mar 149%May 3173%May 3173%Apr 157%Apr 157%May 163%May 163%NowNowclearmostly clearpartly cloudyovercast
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.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Monterey Regional Airport, the chance of a wet day over the course of the spring is very rapidly decreasing, starting the season at 29% and ending it at 3%.

For reference, the year's highest daily chance of a wet day is 30% on February 21, and its lowest chance is 0% on July 22.

Probability of Precipitation in the Spring at Monterey Regional Airport

Probability of Precipitation in the Spring at Monterey Regional AirportMarAprMay0%0%5%5%10%10%15%15%20%20%25%25%30%30%WinterSummerMar 129%Mar 129%May 313%May 313%Apr 118%Apr 118%May 19%May 19%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).

Rainfall

To show variation within the season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during the spring at Monterey Regional Airport is very rapidly decreasing, starting the season at 3.6 inches, when it rarely exceeds 7.0 inches or falls below 0.8 inches, and ending the season at 0.2 inches, when it rarely exceeds 0.9 inches or falls below -0.0 inches.

Average Monthly Rainfall in the Spring at Monterey Regional Airport

Average Monthly Rainfall in the Spring at Monterey Regional AirportMarAprMay0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 in7 in7 in8 in8 inWinterSummerMar 13.6 inMar 13.6 inMay 310.2 inMay 310.2 inApr 11.9 inApr 11.9 inMay 10.7 inMay 10.7 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.

Over the course of the spring at Monterey Regional Airport, the length of the day is very rapidly increasing. From the start to the end of the season, the length of the day increases by 3 hours, 5 minutes, implying an average daily increase of 2 minutes, 2 seconds, and weekly increase of 14 minutes, 13 seconds.

The shortest day of the spring is March 1, with 11 hours, 24 minutes of daylight and the longest day is May 31, with 14 hours, 29 minutes of daylight.

Hours of Daylight and Twilight in the Spring at Monterey Regional Airport

Hours of Daylight and Twilight in the Spring at Monterey Regional AirportMarAprMay0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrWinterSummerMar 2012 hr, 6 minMar 2012 hr, 6 minnightnightdaydayMay 3114 hr, 29 minMay 3114 hr, 29 minMay 113 hr, 42 minMay 113 hr, 42 minNowNow
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.

The latest sunrise of the spring at Monterey Regional Airport is 7:20 AM on March 13 and the earliest sunrise is 1 hour, 30 minutes earlier at 5:50 AM on May 31.

The earliest sunset is 6:02 PM on March 1 and the latest sunset is 2 hours, 18 minutes later at 8:19 PM on May 31.

Daylight saving time (DST) starts at 3:00 AM on March 13, 2022, shifting sunrise and sunset to be an hour later.

For reference, on June 21, the longest day of the year, the Sun rises at 5:49 AM and sets 14 hours, 40 minutes later, at 8:29 PM, while on December 21, the shortest day of the year, it rises at 7:15 AM and sets 9 hours, 40 minutes later, at 4:55 PM.

Sunrise & Sunset with Twilight and Daylight Saving Time in the Spring at Monterey Regional Airport

Sunrise & Sunset with Twilight and Daylight Saving Time in the Spring at Monterey Regional AirportMarAprMay2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMWinterSummer5:50 AM5:50 AMMay 318:19 PMMay 318:19 PM6:37 AM6:37 AMMar 16:02 PMMar 16:02 PM6:53 AM6:53 AMApr 17:29 PMApr 17:29 PM6:13 AM6:13 AMMay 17:55 PMMay 17:55 PMMar 13DSTMar 13DSTSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day in the spring. 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 transitions to and from daylight saving time are indicated by the 'DST' labels.

The figure below presents a compact representation of key lunar data for the spring of 2022. 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. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in the Spring at Monterey Regional Airport

Moon Rise, Set & Phases in the Spring at Monterey Regional AirportMarAprMay12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMWinterSummerFeb 168:57 AMFeb 168:57 AMMar 29:35 AMMar 29:35 AMMar 1812:18 AMMar 1812:18 AMMar 3111:25 PMMar 3111:25 PMApr 1611:56 AMApr 1611:56 AMApr 301:29 PMApr 301:29 PMMay 159:15 PMMay 159:15 PMMay 304:31 AMMay 304:31 AMJun 144:52 AMJun 144:52 AMJun 287:53 PMJun 287:53 PM4:56 PM4:56 PM7:18 AM7:18 AM6:15 PM6:15 PM7:44 AM7:44 AM7:10 PM7:10 PM6:47 PM6:47 PM6:39 AM6:39 AM8:04 PM8:04 PM8:00 PM8:00 PM6:18 AM6:18 AM8:57 PM8:57 PM8:05 PM8:05 PM5:44 AM5:44 AM8:41 PM8:41 PM
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.

The chance that a given day will be muggy at Monterey Regional Airport is essentially constant during the spring, remaining around 0% throughout.

For reference, on September 16, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 17, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in the Spring at Monterey Regional Airport

Humidity Comfort Levels in the Spring at Monterey Regional AirportMarAprMay0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%WinterSummerMar 10%Mar 10%May 310%May 310%Apr 10%Apr 10%May 10%May 10%NowNowdrydry
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.

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 at Monterey Regional Airport is essentially constant during the spring, remaining within 0.2 miles per hour of 7.9 miles per hour throughout.

For reference, on April 17, the windiest day of the year, the daily average wind speed is 8.1 miles per hour, while on September 16, the calmest day of the year, the daily average wind speed is 6.2 miles per hour.

The highest daily average wind speed during the spring is 8.1 miles per hour on April 17.

Average Wind Speed in the Spring at Monterey Regional Airport

Average Wind Speed in the Spring at Monterey Regional AirportMarAprMay0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mphWinterSummerApr 178.1 mphApr 178.1 mphMar 17.9 mphMar 17.9 mphMay 318.0 mphMay 318.0 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The wind direction at Monterey Regional Airport during the spring is predominantly out of the north from March 1 to April 6 and the west from April 6 to May 31.

Wind Direction in the Spring at Monterey Regional Airport

Wind Direction in the Spring at Monterey Regional AirportNWMarAprMay0%100%20%80%40%60%60%40%80%20%100%0%WinterSummerNowNowwestsouthnortheast
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).

Monterey Regional Airport is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature at Monterey Regional Airport is essentially constant during the spring, remaining within 1°F of 54°F throughout.

The lowest average surface water temperature during the spring is 54°F on May 1.

Average Water Temperature in the Spring at Monterey Regional Airport

Average Water Temperature in the Spring at Monterey Regional AirportMarAprMay51°F51°F52°F52°F53°F53°F54°F54°F55°F55°F56°F56°F57°F57°F58°F58°F59°F59°FWinterSummerMay 154°FMay 154°FMar 155°FMar 155°FMay 3154°FMay 3154°FApr 154°FApr 154°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

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).

Temperatures at Monterey Regional Airport are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

Time Spent in Various Temperature Bands and the Growing Season in the Spring at Monterey Regional Airport

Time Spent in Various Temperature Bands and the Growing Season in the Spring at Monterey Regional Airportgrowing seasonMarAprMay0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%WinterSummer100%Apr 16100%Apr 16NowNowvery coldcoldcoolcomfortable
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.

The average accumulated growing degree days at Monterey Regional Airport are rapidly increasing during the spring, increasing by 483°F, from 213°F to 696°F, over the course of the season.

Growing Degree Days in the Spring at Monterey Regional Airport

Growing Degree Days in the Spring at Monterey Regional AirportMarAprMay200°F200°F300°F300°F400°F400°F500°F500°F600°F600°F700°F700°F800°F800°F900°F900°FWinterSummerMar 1213°FMar 1213°FMay 31696°FMay 31696°FApr 1345°FApr 1345°FMay 1502°FMay 1502°FNowNow
The average growing degree days accumulated over the course of the spring, 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 at Monterey Regional Airport is very rapidly increasing during the spring, rising by 3.9 kWh, from 4.1 kWh to 7.9 kWh, over the course of the season.

Average Daily Incident Shortwave Solar Energy in the Spring at Monterey Regional Airport

Average Daily Incident Shortwave Solar Energy in the Spring at Monterey Regional AirportMarAprMay0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhWinterSummerMar 14.1 kWhMar 14.1 kWhMay 317.9 kWhMay 317.9 kWhApr 15.8 kWhApr 15.8 kWhMay 17.0 kWhMay 17.0 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.

For the purposes of this report, the geographical coordinates of Monterey Regional Airport are 36.588 deg latitude, -121.839 deg longitude, and 220 ft elevation.

The topography within 2 miles of Monterey Regional Airport contains very significant variations in elevation, with a maximum elevation change of 896 feet and an average elevation above sea level of 260 feet. Within 10 miles contains very significant variations in elevation (3,045 feet). Within 50 miles contains large variations in elevation (5,850 feet).

The area within 2 miles of Monterey Regional Airport is covered by artificial surfaces (55%), shrubs (20%), and cropland (13%), within 10 miles by water (31%) and shrubs (18%), and within 50 miles by water (46%) and grassland (18%).

This report illustrates the typical weather at Monterey Regional Airport, 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

Monterey Regional Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.

The stations on which we may fall back include but are not limited to Salinas Municipal Airport, Watsonville Municipal Airport, Hollister Municipal Airport, Norman Y. Mineta San José International Airport, Moffett Federal Airfield, Point Piedras Blanca, Hayward Air Terminal Airport, and Livermore Municipal Airport.

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 © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

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.

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