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Climate and Average Weather Year Round in Lame Deer Montana, United States

In Lame Deer, the summers are short, warm, 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 13°F to 88°F and is rarely below -9°F or above 98°F.

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

Climate in Lame Deer

very coldcoldcoolwarmhotwarmcoolcoldvery coldJanFebMarAprMayJunJulAugSepOctNovDecNowNow76%76%42%42%clearovercastprecipitation: 2.3 inprecipitation: 2.3 in0.1 in0.1 inmuggy: 0%muggy: 0%0%0%drydrytourism score: 7.0tourism score: 7.00.00.0
Lame Deer weather by month. Click on each chart for more information.

Average Temperature in Lame Deer

The hot season lasts for 2.9 months, from June 14 to September 12, with an average daily high temperature above 77°F. The hottest day of the year is July 27, with an average high of 88°F and low of 60°F.

The cold season lasts for 3.3 months, from November 20 to February 28, with an average daily high temperature below 43°F. The coldest day of the year is December 29, with an average low of 13°F and high of 31°F.

Average High and Low Temperature in Lame Deer

Average High and Low Temperature in Lame DeerhotcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec-10°F-10°F0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FDec 2931°FDec 2931°FJul 2788°FJul 2788°F13°F13°F60°F60°FJun 1477°FJun 1477°FSep 1277°FSep 1277°FFeb 2843°FFeb 2843°F52°F52°F49°F49°F24°F24°F21°F21°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 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 Lame Deer

Average Hourly Temperature in Lame DeerJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingfreezingvery coldvery coldcoldcoldcoolwarmhotcomfortablecomfortable
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.

Agarakavan, Armenia (6,235 miles away) is the far-away foreign place with temperatures most similar to Lame Deer (view comparison).

Compare Lame Deer to another city:

Clouds

In Lame Deer, 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 Lame Deer begins around June 9 and lasts for 3.9 months, ending around October 7. On August 11, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 76% of the time, and overcast or mostly cloudy 23% 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 58% of the time, and clear, mostly clear, or partly cloudy 42% of the time.

Cloud Cover Categories in Lame Deer

Cloud Cover Categories in Lame DeerclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 1176%Aug 1176%Mar 2042%Mar 2042%Jun 959%Jun 959%Oct 760%Oct 760%NowNowclearmostly 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.

Precipitation

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

The wetter season lasts 3.2 months, from April 19 to July 26, 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 2.

The drier season lasts 8.8 months, from July 26 to April 19. The smallest chance of a wet day is 3% on February 2.

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 Lame Deer changes throughout the year.

Rain alone is the most common for 9.1 months, from February 24 to November 28. The highest chance of a day with rain alone is 30% on June 2.

Snow alone is the most common for 2.9 months, from November 28 to February 24. The highest chance of a day with snow alone is 3% on December 28.

Daily Chance of Precipitation in Lame Deer

Daily Chance of Precipitation in Lame DeersnowrainsnowJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jun 230%Jun 230%Feb 23%Feb 23%Nov 285%Nov 285%Apr 1917%Apr 1917%Jul 2617%Jul 2617%NowNowrainmixed
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. Lame Deer experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 6.9 months, from March 30 to October 28, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around May 26, with an average total accumulation of 2.2 inches.

The rainless period of the year lasts for 5.1 months, from October 28 to March 30. The least rain falls around December 26, with an average total accumulation of 0.0 inches.

Average Monthly Rainfall in Lame Deer

Average Monthly Rainfall in Lame DeerrainJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 inMay 262.2 inMay 262.2 inDec 260.0 inDec 260.0 inSep 251.0 inSep 251.0 inMar 300.5 inMar 300.5 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 liquid-equivalent snowfall.

Snowfall

The sliding 31-day liquid-equivalent quantity of snowfall in Lame Deer 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 in Lame Deer

Average Liquid-Equivalent Monthly Snowfall in Lame DeersnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 inMar 310.2 inMar 310.2 inJul 170.0 inJul 170.0 inDec 240.1 inDec 240.1 inMay 70.1 inMay 70.1 inNowNow
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 Lame Deer varies significantly over the course of the year. In 2021, the shortest day is December 21, with 8 hours, 41 minutes of daylight; the longest day is June 20, with 15 hours, 42 minutes of daylight.

Hours of Daylight and Twilight in Lame Deer

Hours of Daylight and Twilight in Lame DeerJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2015 hr, 42 minJun 2015 hr, 42 minJun 2012 hr, 9 minSep 2212 hr, 9 minSep 228 hr, 41 minDec 218 hr, 41 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.

The earliest sunrise is at 5:16 AM on June 15, and the latest sunrise is 2 hours, 37 minutes later at 7:53 AM on November 6. The earliest sunset is at 4:22 PM on December 10, and the latest sunset is 4 hours, 37 minutes later at 9:00 PM on June 25.

Daylight saving time (DST) is observed in Lame Deer during 2021, starting in the spring on March 14, lasting 7.8 months, and ending in the fall on November 7.

Sunrise & Sunset with Twilight and Daylight Saving Time in Lame Deer

Sunrise & Sunset with Twilight and Daylight Saving Time in Lame DeerJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 155:16 AMJun 155:16 AM9:00 PMJun 259:00 PMJun 25Dec 104:22 PMDec 104:22 PM7:53 AMNov 67:53 AMNov 6Mar 14DSTMar 14DSTDSTNov 7DSTNov 7daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2021. 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.

Moon

The figure below presents a compact representation of key lunar data for 2021. 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 Lame Deer

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.

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 Lame Deer, 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 in Lame Deer

Humidity Comfort Levels in Lame DeerJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 80%Mar 80%Jul 220%Jul 220%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.

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 Lame Deer experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 7.5 months, from October 11 to May 27, with average wind speeds of more than 9.9 miles per hour. The windiest day of the year is January 18, with an average hourly wind speed of 11.3 miles per hour.

The calmer time of year lasts for 4.5 months, from May 27 to October 11. The calmest day of the year is July 30, with an average hourly wind speed of 8.6 miles per hour.

Average Wind Speed in Lame Deer

Average Wind Speed in Lame DeerwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mphJan 1811.3 mphJan 1811.3 mphJul 308.6 mphJul 308.6 mphOct 119.9 mphOct 119.9 mphMay 279.9 mphMay 279.9 mphNowNow
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 Lame Deer varies throughout the year.

The wind is most often from the north for 1.9 months, from June 30 to August 26, with a peak percentage of 30% on July 16. The wind is most often from the west for 10 months, from August 26 to June 30, with a peak percentage of 62% on January 1.

Wind Direction in Lame Deer

Wind Direction in Lame DeerWNWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwesteastnorthsouth
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).

Best Time of Year to Visit

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

Tourism Score in Lame Deer

Tourism Score in Lame Deerbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.07.00.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperature tourism 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 Lame Deer for hot-weather activities is from early July to mid August, with a peak score in the last week of July.

Beach/Pool Score in Lame Deer

Beach/Pool Score in Lame DeerJanFebMarAprMayJunJulAugSepOctNovDec002244668810104.44.40.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperature beach/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 Lame Deer typically lasts for 4.8 months (148 days), from around May 6 to around October 1, rarely starting before April 17 or after May 25, and rarely ending before September 11 or after October 19.

Time Spent in Various Temperature Bands and the Growing Season in Lame Deer

Time Spent in Various Temperature Bands and the Growing Season in Lame Deergrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%May 650%May 650%Oct 150%Oct 150%May 2590%May 2590%Sep 1190%Sep 1190%Apr 1710%Apr 1710%Oct 1910%Oct 1910%0%Dec 50%Dec 5Jul 22100%Jul 22100%NowNowfrigidfreezingvery 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.

Based on growing degree days alone, the first spring blooms in Lame Deer should appear around April 17, only rarely appearing before April 2 or after May 3.

Growing Degree Days in Lame Deer

Growing Degree Days in Lame DeerJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°FApr 1790°FApr 1790°FJul 5900°FJul 5900°FAug 161,800°FAug 161,800°FDec 312,552°FDec 312,552°FNowNow
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 13 to August 19, 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 14, with an average daily incident shortwave energy per square meter below 2.8 kWh. The darkest day of the year is December 25, with an average of 1.5 kWh.

Average Daily Incident Shortwave Solar Energy in Lame Deer

Average Daily Incident Shortwave Solar Energy in Lame DeerbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJul 37.7 kWhJul 37.7 kWhDec 251.5 kWhDec 251.5 kWhMay 136.5 kWhMay 136.5 kWhAug 196.5 kWhAug 196.5 kWhOct 282.8 kWhOct 282.8 kWhFeb 142.8 kWhFeb 142.8 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.

Topography

For the purposes of this report, the geographical coordinates of Lame Deer are 45.623 deg latitude, -106.667 deg longitude, and 3,337 ft elevation.

The topography within 2 miles of Lame Deer contains significant variations in elevation, with a maximum elevation change of 541 feet and an average elevation above sea level of 3,495 feet. Within 10 miles contains significant variations in elevation (1,411 feet). Within 50 miles contains very significant variations in elevation (3,012 feet).

The area within 2 miles of Lame Deer is covered by shrubs (46%), grassland (37%), and trees (17%), within 10 miles by grassland (54%) and shrubs (34%), and within 50 miles by grassland (70%) and shrubs (24%).

Data Sources

This report illustrates the typical weather in Lame Deer, 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 Lame Deer.

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

The stations contributing to this reconstruction are: Sheridan County Airport (KSHR, 41%, 98 kilometers, south); Frank Wiley Field (KMLS, 36%, 108 kilometers, northeast); and Logan International Airport (KBIL, 23%, 147 kilometers, west).

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.