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Summer Weather in Winnett Montana, United States

Daily high temperatures increase by 10°F, from 71°F to 80°F, rarely falling below 59°F or exceeding 96°F. The highest daily average high temperature is 86°F on July 30.

Daily low temperatures increase by 5°F, from 49°F to 54°F, rarely falling below 41°F or exceeding 68°F. The highest daily average low temperature is 60°F on July 30.

For reference, on July 26, the hottest day of the year, temperatures in Winnett typically range from 60°F to 86°F, while on January 1, the coldest day of the year, they range from 16°F to 35°F.

Average High and Low Temperature in the Summer in Winnett

Average High and Low Temperature in the Summer in WinnettJunJulAug30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FSpringFallJul 2686°FJul 2686°F60°F60°FJun 171°FJun 171°F49°F49°FAug 3180°FAug 3180°F54°F54°FJul 181°FJul 181°F56°F56°F
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 summer 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 Summer in Winnett

Average Hourly Temperature in the Summer in WinnettJunJulAug12 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 AMSpringFallcoldcoldcoldcoldcoolcomfortablecomfortablewarmvery 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.

Gürün, Turkey (6,152 miles away); Omīdcheh, Iran (6,375 miles); and Khodzha-Maston, Tajikistan (6,516 miles) are the far-away foreign places with temperatures most similar to Winnett (view comparison).

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The summer in Winnett experiences rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 49% to 34%. The lowest chance of overcast or mostly cloudy conditions is 24% on July 27.

The clearest day of the summer is July 27, with clear, mostly clear, or partly cloudy conditions 76% of the time.

For reference, on March 19, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 62%, while on July 27, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 76%.

Cloud Cover Categories in the Summer in Winnett

Cloud Cover Categories in the Summer in WinnettJunJulAug0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SpringFallMar 1938%Mar 1938%Jun 151%Jun 151%Aug 3166%Aug 3166%Jul 169%Jul 169%Aug 176%Aug 176%clearmostly clearovercastmostly cloudypartly 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.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Winnett, the chance of a wet day over the course of the summer is very rapidly decreasing, starting the season at 35% and ending it at 15%.

For reference, the year's highest daily chance of a wet day is 35% on June 5, and its lowest chance is 3% on January 27.

Probability of Precipitation in the Summer in Winnett

Probability of Precipitation in the Summer in WinnettJunJulAug0%0%5%5%10%10%15%15%20%20%25%25%30%30%35%35%SpringFallJun 535%Jun 535%Aug 3115%Aug 3115%Jul 125%Jul 125%Aug 119%Aug 119%rainmixed
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 summer in Winnett is rapidly decreasing, starting the season at 2.6 inches, when it rarely exceeds 5.2 inches or falls below 1.2 inches, and ending the season at 1.0 inches, when it rarely exceeds 1.9 inches or falls below 0.2 inches.

Average Monthly Rainfall in the Summer in Winnett

Average Monthly Rainfall in the Summer in WinnettJunJulAug0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 inSpringFallJun 12.6 inJun 12.6 inAug 311.0 inAug 311.0 inJul 11.6 inJul 11.6 inAug 11.1 inAug 11.1 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 the summer in Winnett, the length of the day is very rapidly decreasing. From the start to the end of the season, the length of the day decreases by 2 hours, 18 minutes, implying an average daily decrease of 1 minute, 31 seconds, and weekly decrease of 10 minutes, 38 seconds.

The shortest day of the summer is August 31, with 13 hours, 21 minutes of daylight and the longest day is June 20, with 15 hours, 54 minutes of daylight.

Hours of Daylight and Twilight in the Summer in Winnett

Hours of Daylight and Twilight in the Summer in WinnettJunJulAug0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrSpringFallJun 2015 hr, 54 minJun 2015 hr, 54 minnightnightdaydayAug 3113 hr, 21 minAug 3113 hr, 21 minAug 114 hr, 51 minAug 114 hr, 51 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 summer in Winnett is 5:17 AM on June 15 and the latest sunrise is 1 hour, 15 minutes later at 6:32 AM on August 31.

The latest sunset is 9:12 PM on June 25 and the earliest sunset is 1 hour, 19 minutes earlier at 7:53 PM on August 31.

Daylight saving time is observed in Winnett during 2024, but it neither starts nor ends during the summer, so the entire season is in standard time.

For reference, on June 20, the longest day of the year, the Sun rises at 5:18 AM and sets 15 hours, 54 minutes later, at 9:12 PM, while on December 21, the shortest day of the year, it rises at 7:56 AM and sets 8 hours, 30 minutes later, at 4:27 PM.

Sunrise & Sunset with Twilight in the Summer in Winnett

Sunrise & Sunset with Twilight in the Summer in WinnettJunJulAug2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMSpringFall5:17 AM5:17 AMJun 159:10 PMJun 159:10 PM6:32 AM6:32 AMAug 317:53 PMAug 317:53 PM5:22 AM5:22 AMJul 19:11 PMJul 19:11 PM5:53 AM5:53 AMAug 18:45 PMAug 18:45 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day in the summer. 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 the Summer in Winnett

Solar Elevation and Azimuth in the Summer in WinnettJunJulAug12 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 AMSpringFall00102020303040506000101020303040405060
northeastsouthwest
Solar elevation and azimuth in the the summer of 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 the summer of 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 the Summer in Winnett

Moon Rise, Set & Phases in the Summer in WinnettJunJulAug12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMSpringFallMay 79:23 PMMay 79:23 PMMay 237:54 AMMay 237:54 AMJun 66:38 AMJun 66:38 AMJun 217:09 PMJun 217:09 PMJul 54:58 PMJul 54:58 PMJul 214:18 AMJul 214:18 AMAug 45:14 AMAug 45:14 AMAug 1912:26 PMAug 1912:26 PMSep 27:56 PMSep 27:56 PMSep 178:35 PMSep 178:35 PM5:18 AM5:18 AM8:35 PM8:35 PM8:30 PM8:30 PM5:06 AM5:06 AM4:53 AM4:53 AM10:07 PM10:07 PM9:43 PM9:43 PM5:19 AM5:19 AM9:45 PM9:45 PM9:12 PM9:12 PM5:28 AM5:28 AM9:16 PM9:16 PM8:14 PM8:14 PM5:49 AM5:49 AM7:57 PM7:57 PM7:19 PM7:19 PM7:34 AM7:34 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.

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 Winnett is essentially constant during the summer, remaining around 0% throughout.

The highest chance of a muggy day during the summer is 1% on July 15.

For reference, on July 15, 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 the Summer in Winnett

Humidity Comfort Levels in the Summer in WinnettJunJulAug0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%SpringFallJul 151%Jul 151%Jun 10%Jun 10%Aug 310%Aug 310%Jul 10%Jul 10%Aug 10%Aug 10%drydryhumidhumid
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 Winnett is gradually decreasing during the summer, decreasing from 9.9 miles per hour to 9.2 miles per hour over the course of the season.

For reference, on January 18, the windiest day of the year, the daily average wind speed is 12.0 miles per hour, while on July 29, the calmest day of the year, the daily average wind speed is 8.6 miles per hour.

The lowest daily average wind speed during the summer is 8.6 miles per hour on July 29.

Average Wind Speed in the Summer in Winnett

Average Wind Speed in the Summer in WinnettJunJulAug0 mph0 mph5 mph5 mph10 mph10 mph15 mph15 mphSpringFallJul 298.6 mphJul 298.6 mphJun 19.9 mphJun 19.9 mphAug 319.2 mphAug 319.2 mphJul 19.2 mphJul 19.2 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The wind direction in Winnett during the summer is predominantly out of the west from June 1 to July 21 and from August 12 to August 31 and the north from July 21 to August 12.

Wind Direction in the Summer in Winnett

Wind Direction in the Summer in WinnettWNWJunJulAug0%100%20%80%40%60%60%40%80%20%100%0%SpringFallwesteastnorthsouth
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 Winnett typically lasts for 5.0 months (152 days), from around May 4 to around October 3, rarely starting before April 15 or after May 23, and rarely ending before September 15 or after October 21.

The summer in Winnett is very likely fully within the growing season, with the chance that a given day is in the growing season reaching a high of 100% on July 21.

Time Spent in Various Temperature Bands and the Growing Season in the Summer in Winnett

Time Spent in Various Temperature Bands and the Growing Season in the Summer in Winnettgrowing seasonJunJulAug0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SpringFall96%Jun 196%Jun 199%Aug 3199%Aug 31100%Jul 1100%Jul 1100%Aug 1100%Aug 150%May 450%May 490%Sep 1590%Sep 15Jul 21100%Jul 21100%very coldcoldcoolcomfortablewarmhot
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 Winnett are very rapidly increasing during the summer, increasing by 1,668°F, from 371°F to 2,039°F, over the course of the season.

Growing Degree Days in the Summer in Winnett

Growing Degree Days in the Summer in WinnettJunJulAug500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°FSpringFallJun 1371°FJun 1371°FAug 312,039°FAug 312,039°FJul 1791°FJul 1791°FAug 11,433°FAug 11,433°F
The average growing degree days accumulated over the course of the summer, 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 Winnett is decreasing during the summer, falling by 1.1 kWh, from 6.8 kWh to 5.7 kWh, over the course of the season.

The highest average daily incident shortwave solar energy during the summer is 7.5 kWh on July 3.

Average Daily Incident Shortwave Solar Energy in the Summer in Winnett

Average Daily Incident Shortwave Solar Energy in the Summer in WinnettJunJulAug0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhSpringFallJul 37.5 kWhJul 37.5 kWhJun 16.8 kWhJun 16.8 kWhAug 315.7 kWhAug 315.7 kWhAug 17.0 kWhAug 17.0 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 Winnett are 47.003 deg latitude, -108.352 deg longitude, and 2,953 ft elevation.

The topography within 2 miles of Winnett contains only modest variations in elevation, with a maximum elevation change of 325 feet and an average elevation above sea level of 3,022 feet. Within 10 miles contains only modest variations in elevation (755 feet). Within 50 miles contains significant variations in elevation (6,401 feet).

The area within 2 miles of Winnett is covered by grassland (82%) and cropland (18%), within 10 miles by grassland (89%), and within 50 miles by grassland (75%) and shrubs (16%).

This report illustrates the typical weather in Winnett, 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 Winnett.

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

The stations contributing to this reconstruction are:

  • Oscar (K1OM, 72%, 36 mi, northwest, 610 ft elevation change)
  • Jordan Airport (KJDN, 28%, 70 mi, east, -292 ft elevation change)

Sources mapK1OM, 72%36 mi, 610 ftKJDN, 28%70 mi, -292 ft© OpenStreetMap contributors

To get a sense of how much these sources agree with each other, you can view a comparison of Winnett 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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