Climate and Average Weather Year Round in West Glendive Montana, United States
In West Glendive, the summers are warm and mostly clear and the winters are freezing, dry, windy, and partly cloudy. Over the course of the year, the temperature typically varies from 9°F to 88°F and is rarely below -14°F or above 98°F.
Based on the tourism score, the best time of year to visit West Glendive for warm-weather activities is from late June to late August.
Climate in West Glendive
Average Temperature in West Glendive
The hot season lasts for 3.2 months, from June 8 to September 14, with an average daily high temperature above 76°F. The hottest day of the year is July 24, with an average high of 88°F and low of 60°F.
The cold season lasts for 3.4 months, from November 22 to March 1, with an average daily high temperature below 39°F. The coldest day of the year is January 1, with an average low of 9°F and high of 27°F.
Average High and Low Temperature in West Glendive
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 West Glendive
In West Glendive, 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 West Glendive begins around June 11 and lasts for 3.9 months, ending around October 7. On July 29, 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 11. On January 18, 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 in West Glendive
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in West Glendive varies throughout the year.
The wetter season lasts 3.7 months, from April 24 to August 14, with a greater than 17% chance of a given day being a wet day. The chance of a wet day peaks at 32% on June 8.
The drier season lasts 8.3 months, from August 14 to April 24. The smallest chance of a wet day is 2% 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 West Glendive changes throughout the year.
Rain alone is the most common for 8.4 months, from March 4 to November 14. The highest chance of a day with rain alone is 32% on June 8.
Snow alone is the most common for 3.6 months, from November 14 to March 4. The highest chance of a day with snow alone is 3% on December 29.
Daily Chance of Precipitation in West Glendive
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. West Glendive experiences significant seasonal variation in monthly rainfall.
The rainy period of the year lasts for 6.8 months, from April 2 to October 26, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around June 7, with an average total accumulation of 2.2 inches.
The rainless period of the year lasts for 5.2 months, from October 26 to April 2. The least rain falls around January 15, with an average total accumulation of 0.0 inches.
Average Monthly Rainfall in West Glendive
The sliding 31-day liquid-equivalent quantity of snowfall in West Glendive 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 West Glendive
The length of the day in West Glendive varies significantly over the course of the year. In 2021, the shortest day is December 21, with 8 hours, 30 minutes of daylight; the longest day is June 20, with 15 hours, 55 minutes of daylight.
Hours of Daylight and Twilight in West Glendive
The earliest sunrise is at 5:02 AM on June 15, and the latest sunrise is 2 hours, 47 minutes later at 7:49 AM on November 6. The earliest sunset is at 4:09 PM on December 10, and the latest sunset is 4 hours, 49 minutes later at 8:58 PM on June 25.
Daylight saving time (DST) is observed in West Glendive 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 West Glendive
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 West Glendive
The perceived humidity level in West Glendive, 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, staying within 1% of 1% throughout.
Humidity Comfort Levels in West Glendive
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in West Glendive experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 8.8 months, from September 20 to June 13, with average wind speeds of more than 10.9 miles per hour. The windiest day of the year is January 18, with an average hourly wind speed of 12.1 miles per hour.
The calmer time of year lasts for 3.2 months, from June 13 to September 20. The calmest day of the year is July 31, with an average hourly wind speed of 9.6 miles per hour.
Average Wind Speed in West Glendive
The predominant average hourly wind direction in West Glendive varies throughout the year.
The wind is most often from the east for 3.6 weeks, from July 21 to August 15, with a peak percentage of 28% on August 1. The wind is most often from the west for 11 months, from August 15 to July 21, with a peak percentage of 54% on January 1.
Wind Direction in West Glendive
Best Time of Year to Visit
To characterize how pleasant the weather is in West Glendive 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 West Glendive 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 West Glendive
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 West Glendive 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 West Glendive
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.
The growing season in West Glendive typically lasts for 4.8 months (148 days), from around May 7 to around October 2, rarely starting before April 18 or after May 26, and rarely ending before September 12 or after October 20.
Time Spent in Various Temperature Bands and the Growing Season in West Glendive
Based on growing degree days alone, the first spring blooms in West Glendive should appear around April 20, only rarely appearing before April 8 or after May 6.
Growing Degree Days in West Glendive
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 3.4 months, from May 6 to August 19, with an average daily incident shortwave energy per square meter above 6.3 kWh. The brightest day of the year is July 4, with an average of 7.5 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 2.6 kWh. The darkest day of the year is December 25, with an average of 1.3 kWh.
Average Daily Incident Shortwave Solar Energy in West Glendive
For the purposes of this report, the geographical coordinates of West Glendive are 47.111 deg latitude, -104.750 deg longitude, and 2,113 ft elevation.
The topography within 2 miles of West Glendive contains only modest variations in elevation, with a maximum elevation change of 390 feet and an average elevation above sea level of 2,128 feet. Within 10 miles contains only modest variations in elevation (866 feet). Within 50 miles also contains very significant variations in elevation (1,716 feet).
The area within 2 miles of West Glendive is covered by grassland (63%), cropland (19%), and artificial surfaces (10%), within 10 miles by grassland (83%), and within 50 miles by grassland (81%) and cropland (17%).
This report illustrates the typical weather in West Glendive, 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 West Glendive.
For each station, the records are corrected for the elevation difference between that station and West Glendive 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 West Glendive is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between West Glendive and a given station.
The stations contributing to this reconstruction are: Dawson Community Airport (KGDV, 90%, 4.5 kilometers, northwest); Sidney-Richland Municipal Airport (KSDY, 4.8%, 80 kilometers, northeast); Baker Municipal Airport (KBHK, 3.7%, 92 kilometers, southeast); and Dickinson Municipal Airport (KDIK, 1.8%, 152 kilometers, east).
Time zones for airports and weather stations are provided by AskGeo.com .