Climate Overview
The climate in Butte is cold. The average annual temperature is 0°C and approximately 1140mm of precipitation falls per year. Butte receives a notable amount of rainfall throughout the year, including during its driest month. Butte is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: Luglio, Giugno, Agosto. The coldest months are Gennaio, Dicembre, Febbraio, when temperatures can drop to -13°C. Butte experiences heavy snowfall, typically from January through December.
Temperature
Temperatures in Butte vary considerably across the year, with a 30°C difference between the coldest and warmest months. Luglio is the warmest month, though highs remain moderate at 17°C with a mean of 13°C. The coldest month is Gennaio, when overnight lows fall to -13°C and the daily average is -11°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows. The sharpest temperature change occurs between October and November, with a 8°C shift in average temperatures.
Precipitation
Butte is a moderately rainy area, receiving approximately 1140mm of precipitation annually, which averages out to around 95mm per month. The wettest month is August, averaging 152mm of rainfall. September and October also tend to see above-average precipitation. The driest month is April, with just 43mm. That's 109mm less than August, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Butte receives heavy snowfall, accumulating around 421cm annually from January through December. The snowiest month is December, with approximately 85cm. Winter travel should account for significant snow cover.
Wind
Butte is relatively calm, with an average annual wind speed of 6km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 6km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.
Seasons
93 days until Summer
It is currently spring in Butte, which began on March 20, 2026. Butte 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 17°C, while the coldest stretch bottoms out in Gennaio near -13°C. Summer is next, beginning on June 21, 2026 — 93 days from now.
Spring
Temperatures range from -10 to 10°C. Precipitation is moderate at around 160mm for the season, averaging 53mm per month. Winds are generally light, averaging 6km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 7 to 17°C. Rainfall is heavy, totalling around 314mm across the season with a monthly average of 105mm. Winds are generally light, averaging 6km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from -11 to 10°C. Rainfall is heavy, totalling around 378mm across the season with a monthly average of 126mm. Expect around 128cm of snow accumulation during this period. Winds are generally light, averaging 6km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from -13 to -5°C. Precipitation is moderate at around 288mm for the season, averaging 96mm per month. Expect around 206cm of snow accumulation during this period. Winds are generally light, averaging 7km/h. Heavy layering and insulated outerwear are essential — exposed skin should be minimised outdoors.
Monthly Climate Data
The table below shows monthly climate averages for Butte 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.