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September Weather in Pleasant Grove Utah, United States

Daily high temperatures decrease by 13°F, from 83°F to 70°F, rarely falling below 58°F or exceeding 90°F.

Daily low temperatures decrease by 11°F, from 56°F to 45°F, rarely falling below 36°F or exceeding 64°F.

For reference, on July 21, the hottest day of the year, temperatures in Pleasant Grove typically range from 62°F to 90°F, while on January 7, the coldest day of the year, they range from 20°F to 33°F.

Average High and Low Temperature in September in Pleasant Grove

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 temperatures for the quarter of the year centered on September. 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 September in Pleasant Grove

Average Hourly Temperature in September in Pleasant GroveSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 AMAugOctvery coldcoldcoolcomfortablecomfortablewarmhotvery cold
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.

Hekimhan, Turkey (6,648 miles away); Nor Yerznka, Armenia (6,672 miles); and Zanjān, Iran (6,976 miles) are the far-away foreign places with temperatures most similar to Pleasant Grove (view comparison).

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The month of September in Pleasant Grove experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 23% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 21% on September 10.

The clearest day of the month is September 10, with clear, mostly clear, or partly cloudy conditions 79% of the time.

For reference, on February 29, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 51%, while on September 10, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 79%.

Cloud Cover Categories in September in Pleasant Grove

Cloud Cover Categories in September in Pleasant GroveSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AugOctFeb 2949%Feb 2949%Sep 178%Sep 178%Sep 3076%Sep 3076%Sep 1179%Sep 1179%Sep 2177%Sep 2177%clearmostly clearpartly cloudymostly 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. In Pleasant Grove, the chance of a wet day over the course of September is essentially constant, remaining around 17% throughout.

For reference, the year's highest daily chance of a wet day is 25% on May 3, and its lowest chance is 9% on June 28.

Probability of Precipitation in September in Pleasant Grove

Probability of Precipitation in September in Pleasant GroveSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%0%2%2%4%4%6%6%8%8%10%10%12%12%14%14%16%16%18%18%20%20%AugOctSep 2119%Sep 2119%Sep 116%Sep 116%Sep 3018%Sep 3018%Sep 1116%Sep 1116%rainmixedsnow
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 month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during September in Pleasant Grove is gradually increasing, starting the month at 0.9 inches, when it rarely exceeds 1.7 inches or falls below 0.2 inches, and ending the month at 1.3 inches, when it rarely exceeds 2.6 inches or falls below 0.2 inches.

Average Monthly Rainfall in September in Pleasant Grove

Average Monthly Rainfall in September in Pleasant GroveSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300.0 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 inAugOctSep 10.9 inSep 10.9 inSep 301.3 inSep 301.3 inSep 111.1 inSep 111.1 inSep 211.3 inSep 211.3 in
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 September in Pleasant Grove, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 16 minutes, implying an average daily decrease of 2 minutes, 37 seconds, and weekly decrease of 18 minutes, 22 seconds.

The shortest day of the month is September 30, with 11 hours, 47 minutes of daylight and the longest day is September 1, with 13 hours, 3 minutes of daylight.

Hours of Daylight and Twilight in September in Pleasant Grove

Hours of Daylight and Twilight in September in Pleasant GroveSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrAugOctSep 2212 hr, 10 minSep 2212 hr, 10 minnightnightdaydaySep 113 hr, 3 minSep 113 hr, 3 min
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 earliest sunrise of the month in Pleasant Grove is 6:54 AM on September 1 and the latest sunrise is 28 minutes later at 7:23 AM on September 30.

The latest sunset is 7:57 PM on September 1 and the earliest sunset is 48 minutes earlier at 7:09 PM on September 30.

Daylight saving time is observed in Pleasant Grove during 2024, but it neither starts nor ends during September, so the entire month is in standard time.

For reference, on June 20, the longest day of the year, the Sun rises at 5:57 AM and sets 15 hours, 3 minutes later, at 9:00 PM, while on December 21, the shortest day of the year, it rises at 7:46 AM and sets 9 hours, 17 minutes later, at 5:04 PM.

Sunrise & Sunset with Twilight in September in Pleasant Grove

Sunrise & Sunset with Twilight in September in Pleasant GroveSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930302 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMAugOct6:54 AM6:54 AMSep 17:57 PMSep 17:57 PM7:23 AM7:23 AMSep 307:09 PMSep 307:09 PM7:04 AM7:04 AMSep 117:41 PMSep 117:41 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of September. 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 September in Pleasant Grove

Solar Elevation and Azimuth in September in Pleasant GroveSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 AMAugOct0010102020203030404050500001010202030303040405060
northeastsouthwest
Solar elevation and azimuth over the course of September 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 September 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. 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 September in Pleasant Grove

Moon Rise, Set & Phases in September in Pleasant GroveSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMAugOctAug 45:14 AMAug 45:14 AMAug 1912:26 PMAug 1912:26 PMSep 27:56 PMSep 27:56 PMSep 178:35 PMSep 178:35 PMOct 212:50 PMOct 212:50 PMOct 175:27 AMOct 175:27 AM6:24 AM6:24 AM9:12 PM9:12 PM8:08 PM8:08 PM6:21 AM6:21 AM6:23 AM6:23 AM8:02 PM8:02 PM7:30 PM7:30 PM7:48 AM7:48 AM7:16 AM7:16 AM7:05 PM7:05 PM6:19 PM6:19 PM7:55 AM7:55 AM
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.
Sep 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
2%5:20 AMENE7:41 PMWNW-12:34 PMS249,289 mi
2
0%6:23 AMENE8:02 PMWNW-1:16 PMS250,660 mi
3
1%7:24 AME8:22 PMW-1:56 PMS251,667 mi
4
3%8:24 AME8:40 PMW-2:34 PMS252,265 mi
5
7%9:23 AME8:59 PMW-3:12 PMS252,389 mi
6
13%10:23 AMESE9:19 PMWSW-3:52 PMS251,963 mi
7
20%11:25 AMESE9:42 PMWSW-4:34 PMS250,915 mi
8
28%12:28 PMESE10:09 PMWSW-5:19 PMS249,189 mi
9
38%1:32 PMESE10:43 PMSW-6:08 PMS246,766 mi
10
48%2:37 PMSE11:25 PMSW-7:01 PMS243,686 mi
11
50%3:39 PMSE--7:58 PMS240,058 mi
12
69%-12:18 AMSW4:35 PMSE8:58 PMS236,081 mi
13
79%-1:21 AMSW5:23 PMSE9:58 PMS232,038 mi
14
88%-2:34 AMWSW6:03 PMESE10:57 PMS228,272 mi
15
95%-3:51 AMWSW6:36 PMESE11:52 PMS225,148 mi
16
97%-5:10 AMWSW7:04 PMESE--
17
100%-6:29 AMW7:30 PME12:45 AMS222,995 mi
18
100%-7:48 AMW7:55 PME1:37 AMS222,043 mi
19
98%-9:07 AMW8:22 PMENE2:28 AMS222,386 mi
20
92%-10:26 AMWNW8:51 PMENE3:19 AMS223,960 mi
21
84%-11:46 AMWNW9:25 PMENE4:13 AMS226,560 mi
22
75%-1:03 PMNW10:07 PMNE5:09 AMS229,886 mi
23
64%-2:15 PMNW10:57 PMNE6:08 AMS233,596 mi
24
50%-3:17 PMNW11:56 PMNE7:07 AMS237,367 mi
25
42%-4:07 PMNW-8:04 AMS240,935 mi
26
31%1:00 AMNE4:48 PMWNW-8:58 AMS244,116 mi
27
22%2:06 AMENE5:20 PMWNW-9:48 AMS246,804 mi
28
15%3:12 AMENE5:46 PMWNW-10:33 AMS248,959 mi
29
8%4:16 AMENE6:08 PMWNW-11:15 AMS250,586 mi
30
4%5:17 AMENE6:28 PMW-11:55 AMS251,713 mi

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 in Pleasant Grove is essentially constant during September, remaining around 0% throughout.

For reference, on August 5, the muggiest day of the year, there are muggy conditions 1% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in September in Pleasant Grove

Humidity Comfort Levels in September in Pleasant GroveSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%AugOctSep 10%Sep 10%Sep 300%Sep 300%Sep 110%Sep 110%Sep 210%Sep 210%comfortablecomfortabledrydryhumidhumid
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 in Pleasant Grove is essentially constant during September, remaining within 0.1 miles per hour of 5.9 miles per hour throughout.

For reference, on April 4, the windiest day of the year, the daily average wind speed is 6.9 miles per hour, while on January 21, the calmest day of the year, the daily average wind speed is 5.2 miles per hour.

The highest daily average wind speed during September is 6.0 miles per hour on September 1.

Average Wind Speed in September in Pleasant Grove

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Pleasant Grove throughout September is predominantly from the south, with a peak proportion of 40% on September 1.

Wind Direction in September in Pleasant Grove

Wind Direction in September in Pleasant GroveSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%20%80%40%60%60%40%80%20%100%0%AugOctwestsoutheastnorth
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).

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 Pleasant Grove typically lasts for 5.8 months (177 days), from around April 25 to around October 19, rarely starting before April 1 or after May 14, and rarely ending before September 29 or after November 7.

The month of September in Pleasant Grove is more likely than not fully within the growing season, with the chance that a given day is in the growing season decreasing from 100% to 89% over the course of the month.

Time Spent in Various Temperature Bands and the Growing Season in September in Pleasant Grove

Time Spent in Various Temperature Bands and the Growing Season in September in Pleasant Grovegrowing seasonSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AugOct100%Sep 1100%Sep 189%Sep 3089%Sep 30100%Sep 11100%Sep 1197%Sep 2197%Sep 2150%Oct 1950%Oct 19very coldcoldcoolcomfortablewarmhotfreezing
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 in Pleasant Grove are increasing during September, increasing by 382°F, from 2,419°F to 2,801°F, over the course of the month.

Growing Degree Days in September in Pleasant Grove

Growing Degree Days in September in Pleasant GroveSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930302,200°F2,200°F2,300°F2,300°F2,400°F2,400°F2,500°F2,500°F2,600°F2,600°F2,700°F2,700°F2,800°F2,800°F2,900°F2,900°F3,000°F3,000°FAugOctSep 12,419°FSep 12,419°FSep 302,801°FSep 302,801°FSep 112,585°FSep 112,585°F
The average growing degree days accumulated over the course of September, 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 in Pleasant Grove is decreasing during September, falling by 1.3 kWh, from 6.4 kWh to 5.1 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in September in Pleasant Grove

Average Daily Incident Shortwave Solar Energy in September in Pleasant GroveSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhAugOctSep 16.4 kWhSep 16.4 kWhSep 305.1 kWhSep 305.1 kWhSep 116.0 kWhSep 116.0 kWh
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 Pleasant Grove are 40.364 deg latitude, -111.739 deg longitude, and 4,623 ft elevation.

The topography within 2 miles of Pleasant Grove contains very significant variations in elevation, with a maximum elevation change of 1,509 feet and an average elevation above sea level of 4,714 feet. Within 10 miles contains very significant variations in elevation (7,215 feet). Within 50 miles also contains extreme variations in elevation (7,730 feet).

The area within 2 miles of Pleasant Grove is covered by artificial surfaces (67%) and cropland (23%), within 10 miles by shrubs (21%) and artificial surfaces (20%), and within 50 miles by shrubs (50%) and trees (26%).

This report illustrates the typical weather in Pleasant Grove, 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Pleasant Grove.

For each station, the records are corrected for the elevation difference between that station and Pleasant Grove 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 Pleasant Grove is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Pleasant Grove 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 Pleasant Grove 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.

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