Average Weather in Fort Benton Montana, United States
In Fort Benton, the summers are short, 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 18°F to 88°F and is rarely below -8°F or above 98°F.
Based on the tourism score, the best time of year to visit Fort Benton for warm-weather activities is from early July to late August.
The hot season lasts for 2.8 months, from June 16 to September 11, 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 3.5 months, from November 18 to March 2, with an average daily high temperature below 45°F. The coldest day of the year is January 1, with an average low of 18°F and high of 35°F.
Average High and Low Temperature
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
Sivrihisar, Turkey (5,983 miles away); Trudovoye, Ukraine (5,687 miles); and Kuluncak, Turkey (6,145 miles) are the far-away foreign places with temperatures most similar to Fort Benton (view comparison).
In Fort Benton, 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 Fort Benton begins around June 15 and lasts for 3.7 months, ending around October 4. On July 27, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 77% of the time, and overcast or mostly cloudy 23% of the time.
The cloudier part of the year begins around October 4 and lasts for 8.3 months, ending around June 15. On March 17, the cloudiest day of the year, the sky is overcast or mostly cloudy 63% of the time, and clear, mostly clear, or partly cloudy 37% of the time.
Cloud Cover Categories
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 Fort Benton varies throughout the year.
The wetter season lasts 2.2 months, from May 6 to July 13, with a greater than 19% chance of a given day being a wet day. The chance of a wet day peaks at 33% on June 4.
The drier season lasts 9.8 months, from July 13 to May 6. The smallest chance of a wet day is 5% 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 Fort Benton changes throughout the year.
Rain alone is the most common for 8.8 months, from February 23 to November 19. The highest chance of a day with rain alone is 33% on June 4.
Snow alone is the most common for 3.2 months, from November 19 to February 23. The highest chance of a day with snow alone is 4% on January 9.
Daily Chance of Precipitation
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. Fort Benton experiences significant seasonal variation in monthly rainfall.
The rainy period of the year lasts for 7.0 months, from March 24 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 2, with an average total accumulation of 2.5 inches.
The rainless period of the year lasts for 5.0 months, from October 26 to March 24. The least rain falls around February 7, with an average total accumulation of 0.1 inches.
Average Monthly Rainfall
The sliding 31-day liquid-equivalent quantity of snowfall in Fort Benton 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
The length of the day in Fort Benton varies extremely over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 24 minutes of daylight; the longest day is June 21, with 16 hours, 1 minute of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:23 AM on June 16, and the latest sunrise is 2 hours, 48 minutes later at 8:11 AM on December 31. The earliest sunset is at 4:30 PM on December 11, and the latest sunset is 4 hours, 55 minutes later at 9:25 PM on June 25.
Daylight saving time (DST) is observed in Fort Benton 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
The perceived humidity level in Fort Benton, 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
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Fort Benton experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 7.3 months, from October 3 to May 14, with average wind speeds of more than 10.3 miles per hour. The windiest day of the year is January 16, with an average hourly wind speed of 12.5 miles per hour.
The calmer time of year lasts for 4.7 months, from May 14 to October 3. The calmest day of the year is August 3, with an average hourly wind speed of 8.2 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Fort Benton is from the west throughout the year.
Best Time of Year to Visit
To characterize how pleasant the weather is in Fort Benton 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 Fort Benton for general outdoor tourist activities is from early July to late August, with a peak score in the last week of July.
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 Fort Benton for hot-weather activities is from mid July to mid August, with a peak score in the last week of July.
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 Fort Benton typically lasts for 5.4 months (163 days), from around April 29 to around October 10, rarely starting before April 9 or after May 18, and rarely ending before September 22 or after October 29.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Fort Benton should appear around April 13, only rarely appearing before March 26 or after April 29.
Growing Degree Days
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 20, with an average daily incident shortwave energy per square meter above 6.3 kWh. The brightest day of the year is July 8, with an average of 7.5 kWh.
The darker period of the year lasts for 3.6 months, from October 28 to February 15, with an average daily incident shortwave energy per square meter below 2.5 kWh. The darkest day of the year is December 24, with an average of 1.2 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Fort Benton are 47.818 deg latitude, -110.667 deg longitude, and 2,858 ft elevation.
The topography within 2 miles of Fort Benton contains only modest variations in elevation, with a maximum elevation change of 328 feet and an average elevation above sea level of 2,766 feet. Within 10 miles contains only modest variations in elevation (1,060 feet). Within 50 miles contains very significant variations in elevation (5,400 feet).
The area within 2 miles of Fort Benton is covered by grassland (85%) and cropland (11%), within 10 miles by grassland (61%) and cropland (37%), and within 50 miles by grassland (54%) and cropland (41%).
This report illustrates the typical weather in Fort Benton, 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 Fort Benton.
For each station, the records are corrected for the elevation difference between that station and Fort Benton 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 Fort Benton is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Fort Benton and a given station.
The stations contributing to this reconstruction are: Malmstrom Air Force Base (50%, 51 kilometers, southwest); Bravo (32%, 64 kilometers, south); and Havre City/County Airport (18%, 105 kilometers, northeast).
Time zones for aiports and weather stations are provided by AskGeo.com .