Climate Insights for Butte

The climate in Butte is cool. The average annual temperature is 3°C and approximately 588mm of precipitation falls per year. Maggio is the wettest month, receiving around 94mm of rainfall. Butte 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 Dicembre, Gennaio, Febbraio, when temperatures can drop to -12°C. Snowfall occurs from January to December, with around 192cm accumulating over the season.

Butte has a wide annual temperature range, spanning 37°C from the coldest to warmest months. The warmest month is Luglio, when average highs reach 25°C and the mean temperature sits around 17°C. The coldest month is Dicembre, when overnight lows fall to -12°C and the daily average is -8°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 7°C shift in average temperatures.

Butte is a relatively dry area, receiving approximately 588mm of precipitation annually, which averages out to around 49mm per month. The wettest month is May, averaging 94mm of rainfall. June and April also tend to see above-average precipitation. The driest month is January, with just 27mm. That's 68mm 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 192cm accumulating over the season. February typically sees the most snow at around 31cm.

Butte is mildly breezy, with an average annual wind speed of 13km/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 14km/h, though still comfortable for most outdoor activities. The calmest conditions occur in January, with average winds dropping to 12km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.

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 25°C, while the coldest stretch bottoms out in Dicembre near -12°C. Summer is next, beginning on June 21, 2026 — 93 days from now.

The best time to visit Butte is during Luglio and Agosto, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 38mm per month. By contrast, Dicembre can be quite cold with temperatures dropping to -12°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 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.