Climate Insights for Belle Fourche

The climate in Belle Fourche is cool. The average annual temperature is 9°C and approximately 427mm of precipitation falls per year. Maggio is the wettest month, receiving around 72mm of rainfall. Belle Fourche is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: Luglio, Agosto, Giugno. The coldest months are Febbraio, Gennaio, Dicembre, when temperatures can drop to -8°C. Snowfall occurs from January to December, with around 89cm accumulating over the season.

Belle Fourche has a wide annual temperature range, spanning 39°C from the coldest to warmest months. The warmest month is Luglio, when average highs reach 31°C and the mean temperature sits around 23°C. The coldest month is Febbraio, when overnight lows fall to -8°C and the daily average is -4°C. On average, daily temperatures fluctuate by about 13°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 9°C shift in average temperatures.

Belle Fourche is a relatively dry area, receiving approximately 427mm of precipitation annually, which averages out to around 36mm per month. The wettest month is May, averaging 72mm of rainfall. April and June also tend to see above-average precipitation. The driest month is January, with just 12mm. That's 59mm less than May, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Snowfall is a regular feature from January to December, with around 89cm accumulating over the season. April typically sees the most snow at around 19cm.

Belle Fourche is moderately windy, with an average annual wind speed of 22km/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 25km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in August, with average winds dropping to 19km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 6km/h between the calmest and windiest months.

It is currently winter in Belle Fourche, which began on December 21, 2026. Belle Fourche 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 Luglio at around 31°C, while the coldest stretch bottoms out in Febbraio near -8°C. Spring is next, beginning on March 20, 2026 — 2 days from now.

The best time to visit Belle Fourche is during Giugno, Luglio, Agosto and Settembre, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 41mm per month. By contrast, Febbraio can be quite cold with temperatures dropping to -8°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 Belle Fourche 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.