Climate Insights for Fort Benton

The climate in Fort Benton is cool. The average annual temperature is 9°C and approximately 339mm of precipitation falls per year. May is the wettest month, receiving around 50mm of rainfall. Fort Benton is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are February, January, December, when temperatures can drop to -9°C. Snowfall occurs from January to December, with around 72cm accumulating over the season.

Fort Benton has a wide annual temperature range, spanning 41°C from the coldest to warmest months. The warmest month is July, when average highs reach 32°C and the mean temperature sits around 24°C. The coldest month is February, when overnight lows fall to -9°C and the daily average is -5°C. On average, daily temperatures fluctuate by about 12°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 8°C shift in average temperatures.

Fort Benton is a quite dry location, receiving approximately 339mm of precipitation annually, which averages out to around 28mm per month. The wettest month is May, averaging 50mm of rainfall. June and April also tend to see above-average precipitation. The driest month is December, with just 16mm. That's 33mm less than May, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall. Snowfall is a regular feature from January to December, with around 72cm accumulating over the season. February typically sees the most snow at around 16cm.

Fort Benton is moderately windy, with an average annual wind speed of 25km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 28km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in January, with average winds dropping to 24km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 4km/h between the calmest and windiest months.

It is currently spring in Fort Benton, which began on March 20, 2026. Fort Benton is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 32°C, while the coldest stretch bottoms out in February near -9°C. Summer is next, beginning on June 21, 2026 — 85 days from now.

The best time to visit Fort Benton is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 31mm per month. By contrast, February can be quite cold with temperatures dropping to -9°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Fort Benton based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.