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Average Weather in Hardin Montana, United States

In Hardin, the summers are short, hot, and mostly clear; the winters are freezing, windy, and partly cloudy; and it is dry year round. Over the course of the year, the temperature typically varies from 17°F to 91°F and is rarely below -4°F or above 100°F.

Based on the tourism score, the best time of year to visit Hardin for warm-weather activities is from late June to late August.

Climate Summary

very coldcoldcoolwarmhotcoolcoldvery coldJanFebMarAprMayJunJulAugSepOctNovDec76%76%41%41%clearovercastprecipitation: 2.2 inprecipitation: 2.2 in0.2 in0.2 inmuggy: 0%muggy: 0%0%0%drydrytourism score: 7.2tourism score: 7.20.00.0
Click on each chart for more information.

Temperature

The hot season lasts for 2.9 months, from June 14 to September 11, with an average daily high temperature above 80°F. The hottest day of the year is July 27, with an average high of 91°F and low of 63°F.

The cold season lasts for 3.2 months, from November 20 to February 26, with an average daily high temperature below 45°F. The coldest day of the year is January 1, with an average low of 17°F and high of 34°F.

Average High and Low Temperature

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 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

Average Hourly Temperature in HardinJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMfreezingfreezingvery coldcoldcoldcoolcomfortablewarmhotvery coldcomfortable
The average hourly temperature, color coded into bands: 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 shaded overlays indicate night and civil twilight.

Kemaliye, Turkey (6,207 miles away) and Balahovit, Armenia (6,259 miles) are the far-away foreign places with temperatures most similar to Hardin (view comparison).

Clouds

In Hardin, 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 Hardin begins around June 9 and lasts for 3.9 months, ending around October 7. On July 26, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 76% of the time, and overcast or mostly cloudy 24% of the time.

The cloudier part of the year begins around October 7 and lasts for 8.1 months, ending around June 9. On March 20, the cloudiest day of the year, the sky is overcast or mostly cloudy 59% of the time, and clear, mostly clear, or partly cloudy 41% of the time.

Cloud Cover Categories

Cloud Cover Categories in HardinclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 2676%Jul 2676%Mar 2041%Mar 2041%Jun 958%Jun 958%Oct 759%Oct 759%clearpartly cloudyovercastmostly clear
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

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

The wetter season lasts 5.4 months, from April 11 to September 24, with a greater than 17% chance of a given day being a wet day. The chance of a wet day peaks at 30% on June 6.

The drier season lasts 6.6 months, from September 24 to April 11. The smallest chance of a wet day is 4% on January 27.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation in Hardin changes throughout the year.

Rain alone is the most common for 9.7 months, from February 7 to November 30. The highest chance of a day with rain alone is 30% on June 6.

Snow alone is the most common for 2.3 months, from November 30 to February 7. The highest chance of a day with snow alone is 4% on December 28.

Daily Chance of Precipitation

Daily Chance of Precipitation in HardinsnowrainsnowJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jun 630%Jun 630%Jan 274%Jan 274%Nov 306%Nov 306%Apr 1117%Apr 1117%Sep 2417%Sep 2417%rain
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 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. Hardin experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 7.2 months, from March 23 to October 31, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around May 24, with an average total accumulation of 2.2 inches.

The rainless period of the year lasts for 4.8 months, from October 31 to March 23. The least rain falls around January 1, with an average total accumulation of 0.1 inches.

Average Monthly Rainfall

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 liquid-equivalent snowfall.

Snowfall

The sliding 31-day liquid-equivalent quantity of snowfall in Hardin does not vary significantly over the course of the year, staying within 0.1 inches of 0.1 inches throughout.

Average Liquid-Equivalent Monthly Snowfall

Average Liquid-Equivalent Monthly Snowfall in HardinsnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.5 in1.0 in1.5 in2.0 inDec 260.2 inDec 260.2 inJul 190.0 inJul 190.0 inMar 230.1 inMar 230.1 in
The average liquid-equivalent snowfall (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 rainfall.

Sun

The length of the day in Hardin varies significantly over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 40 minutes of daylight; the longest day is June 21, with 15 hours, 43 minutes of daylight.

Hours of Daylight and Twilight

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 is at 5:20 AM on June 15, and the latest sunrise is 2 hours, 33 minutes later at 7:53 AM on November 3. The earliest sunset is at 4:26 PM on December 10, and the latest sunset is 4 hours, 38 minutes later at 9:04 PM on June 26.

Daylight saving time (DST) is observed in Hardin during 2018, starting in the spring on March 11, lasting 7.8 months, and ending in the fall on November 4.

Sunrise & Sunset with Twilight and Daylight Saving Time

Sunrise & Sunset with Twilight and Daylight Saving Time in HardinJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 155:20 AMJun 155:20 AM9:04 PMJun 269:04 PMJun 26Dec 104:26 PMDec 104:26 PM7:53 AMNov 37:53 AMNov 3Mar 11DSTMar 11DSTDSTNov 4DSTNov 4daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2018. 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.

Humidity

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 perceived humidity level in Hardin, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.

Humidity Comfort Levels

Humidity Comfort Levels in HardinJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jan 250%Jan 250%Jul 100%Jul 100%drydry
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

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 Hardin experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 7.0 months, from October 12 to May 14, with average wind speeds of more than 9.3 miles per hour. The windiest day of the year is January 18, with an average hourly wind speed of 10.9 miles per hour.

The calmer time of year lasts for 5.0 months, from May 14 to October 12. The calmest day of the year is July 30, with an average hourly wind speed of 7.7 miles per hour.

Average Wind Speed

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

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

The wind is most often from the north for 1.4 months, from June 30 to August 11, with a peak percentage of 31% on July 16. The wind is most often from the west for 11 months, from August 11 to June 30, with a peak percentage of 61% on January 1.

Wind Direction

Wind Direction in HardinWNWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%westeastnorthsouth
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Best Time of Year to Visit

To characterize how pleasant the weather is in Hardin 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 time of year to visit Hardin for general outdoor tourist activities is from late June to late August, with a peak score in the last week of July.

Tourism Score

Tourism Score in Hardinbest timeJanFebMarAprMayJunJulAugSepOctNovDec02468107.27.20.00.0 precipitationprecipitationcloudscloudstemperaturetemperaturetourism 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 time of year to visit Hardin for hot-weather activities is from early July to mid August, with a peak score in the last week of July.

Beach/Pool Score

Beach/Pool Score in HardinJanFebMarAprMayJunJulAugSepOctNovDec02468105.05.00.00.0 precipitationprecipitationcloudscloudstemperaturetemperaturebeach/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.

Growing Season

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 Hardin typically lasts for 5.5 months (169 days), from around April 25 to around October 11, rarely starting before April 5 or after May 15, and rarely ending before September 21 or after October 30.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season in Hardingrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Apr 2550%Apr 2550%Oct 1150%Oct 1150%May 1590%May 1590%Sep 2190%Sep 2190%Apr 510%Apr 510%Oct 3010%Oct 3010%Jul 14100%Jul 14100%frigidfreezingvery coldcoolcomfortablewarmhotcold
The percentage of time spent in various temperature bands: 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 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 Hardin should appear around April 9, only rarely appearing before March 24 or after April 25.

Growing Degree Days

The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 3.2 months, from May 14 to August 20, with an average daily incident shortwave energy per square meter above 6.5 kWh. The brightest day of the year is July 3, with an average of 7.7 kWh.

The darker period of the year lasts for 3.5 months, from October 28 to February 15, with an average daily incident shortwave energy per square meter below 2.7 kWh. The darkest day of the year is December 25, with an average of 1.5 kWh.

Average Daily Incident Shortwave Solar Energy

The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Hardin are 45.732 deg latitude, -107.612 deg longitude, and 2,910 ft elevation.

The topography within 2 miles of Hardin contains only modest variations in elevation, with a maximum elevation change of 161 feet and an average elevation above sea level of 2,908 feet. Within 10 miles contains only modest variations in elevation (761 feet). Within 50 miles contains significant variations in elevation (6,394 feet).

The area within 2 miles of Hardin is covered by cropland (71%) and grassland (15%), within 10 miles by grassland (66%) and cropland (28%), and within 50 miles by grassland (73%) and shrubs (14%).

Data Sources

This report illustrates the typical weather in Hardin, 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Hardin.

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

The stations contributing to this reconstruction are: Logan International Airport (45%, 73 kilometers, west); Sheridan County Airport (22%, 118 kilometers, southeast); South Big Horn County Airport (17%, 140 kilometers, south); and Frank Wiley Field (15%, 154 kilometers, northeast).

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , 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 aiports 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.