Butte, United States experiences average highs of 11°C (52°F) and lows of -1°C (30°F) throughout the year. Rainfall is moderate, averaging about 9 rainy days per month. Sunshine is abundant, averaging about 10 hours per day. Average highs have stayed broadly stable across the available records.
Butte, United States Weather & Climate 2026
Monthly climate averages for Butte, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Feb–Oct At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
4.4/10
Best: July, August, September
UV Index
5
Low
Temperature 11°C / -1°C
Feels Like 8°C / -5°C
Rainy Days 9
Rainfall 42 mm
Sunshine 10 h
Humidity 66%
Wind Speed 14 km/h
Dew Point -1°C
Snow Days 10 days
Frost Days 21 days
Hottest Month
27°C
July
Avg Low12°C
Rain8days
Coldest Month
-13°C
January
Avg High-2°C
Rain7days
Driest Month
7days
January
Avg High-2°C
Avg Low-13°C
Windiest Month
15 km/h
April (Gusts 42)
Worst Time to Visit
Consider avoiding January, March, April, December due to very cold temperatures.
Sun Position
Sunrise 05:40
Daylight 15.7h
Sunset 21:24
Live conditions—
Butte on the map · live conditions
Butte, United States
- Continent
- Americas
- Country
- United States
- City
- Butte
- Population
- 34.2K
- Elevation
- 1,688 m
- Coordinates
- 46.00°, -112.53°
Seasonal Breakdown
Spring
Mar–May
Avg High 9°C
Avg Low -3°C
Rain 12 days/mo
Summer
Jun–Aug
Avg High 25°C
Avg Low 10°C
Rain 9 days/mo
2/3 best months
Autumn
Sep–Nov
Avg High 12°C
Avg Low 0°C
Rain 8 days/mo
1/3 best months
Winter
Dec–Feb
Avg High -1°C
Avg Low -12°C
Rain 8 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: -2°C / -13°C . Feb: -1°C / -12°C . Mar: 3°C / -7°C . Apr: 8°C / -4°C . May: 15°C / 2°C . Jun: 21°C / 7°C . Jul: 27°C / 12°C . Aug: 26°C / 11°C . Sep: 21°C / 7°C . Oct: 12°C / 0°C . Nov: 4°C / -6°C . Dec: -1°C / -11°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 23 mm. Feb: 39 mm. Mar: 37 mm. Apr: 52 mm. May: 83 mm. Jun: 81 mm. Jul: 30 mm. Aug: 33 mm. Sep: 39 mm. Oct: 37 mm. Nov: 25 mm. Dec: 29 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 77%. Feb: 75%. Mar: 73%. Apr: 69%. May: 68%. Jun: 62%. Jul: 51%. Aug: 50%. Sep: 57%. Oct: 67%. Nov: 71%. Dec: 76%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 12 km/h . Feb: 14 km/h . Mar: 13 km/h . Apr: 15 km/h . May: 14 km/h . Jun: 15 km/h . Jul: 14 km/h . Aug: 14 km/h . Sep: 14 km/h . Oct: 14 km/h . Nov: 13 km/h . Dec: 13 km/h .
Sunshine
Sunshine
Sunshine: Jan: 7h. Feb: 8h. Mar: 10h. Apr: 11h. May: 11h. Jun: 13h. Jul: 13h. Aug: 12h. Sep: 10h. Oct: 8h. Nov: 7h. Dec: 6h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 4. Mar: UV 5. Apr: UV 6. May: UV 7. Jun: UV 8. Jul: UV 8. Aug: UV 7. Sep: UV 6. Oct: UV 4. Nov: UV 3. Dec: UV 2.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 13 days. Feb: 17 days. Mar: 16 days. Apr: 14 days. May: 6 days. Jun: 1 days. Jul: 0 days. Aug: 0 days. Sep: 2 days. Oct: 8 days. Nov: 12 days. Dec: 15 days.
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall has remained broadly steady.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 26°C | Jul · 27°C |
| Coldest month | Jan 2025 · -14°C | Jan · -13°C |
| Wettest month | May 2025 · 78 mm | May · 83 mm |
| Windiest month | Dec 2025 · 16 km/h | Apr · 15 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Poor May
Fair June
Good July best
Excellent August best
Excellent September best
Excellent October
Poor November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | -2°C / -13°C | -6°C / -18°C | 7days (23 mm) Good | 6.5h Fair | 77% Humid | 2.4 Moderate | Poor | View Details |
| February | -1°C / -12°C | -6°C / -17°C | 10days (39 mm) Wet | 7.5h Good | 75% Muggy | 3.6 Moderate | Poor | View Details |
| March | 3°C / -7°C | 0°C / -12°C | 11days (37 mm) Wet | 9.5h Good | 73% Muggy | 5.1 High | Poor | View Details |
| April | 8°C / -4°C | 5°C / -7°C | 12days (52 mm) Wet | 10.9h Excellent | 69% Muggy | 6.1 High | Poor | View Details |
| May | 15°C / 2°C | 13°C / -1°C | 14days (83 mm) Wet | 11.4h Excellent | 68% Muggy | 6.9 High | Fair | View Details |
| June | 21°C / 7°C | 19°C / 5°C | 12days (81 mm) Wet | 12.5h Excellent | 62% Muggy | 7.5 Very High | Good | View Details |
| July best | 27°C / 12°C | 26°C / 11°C | 8days (30 mm) Wet | 13.4h Excellent | 51% Moderate | 7.8 Very High | Excellent | View Details |
| August best | 26°C / 11°C | 24°C / 10°C | 7days (33 mm) Good | 11.9h Excellent | 50% Moderate | 6.9 High | Excellent | View Details |
| September best | 21°C / 7°C | 18°C / 5°C | 7days (39 mm) Good | 10h Excellent | 57% Moderate | 5.6 High | Excellent | View Details |
| October | 12°C / 0°C | 8°C / -4°C | 9days (37 mm) Wet | 8.4h Good | 67% Muggy | 4 Moderate | Poor | View Details |
| November | 4°C / -6°C | 0°C / -10°C | 7days (25 mm) Good | 7h Good | 71% Muggy | 2.5 Moderate | Poor | View Details |
| December | -1°C / -11°C | -5°C / -16°C | 8days (29 mm) Wet | 5.8h Fair | 76% Humid | 1.9 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Butte are July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Butte, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Butte is July, with average daytime highs of 27°C (80°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Butte is January, with average overnight lows of -13°C (9°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Butte is May, averaging 83mm of precipitation across 14 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Butte runs through May, April, June, March, with the heaviest rainfall in May. Based on 10-year averages for Butte.
Butte receives approximately 115 sunshine hours per year. The sunniest month is July with around 13 hours. Based on climate data for Butte.
The least favorable months to visit Butte are January, March, April, December, primarily due to very cold temperatures. For the best conditions, consider July, August, September instead.
The annual average UV index in Butte is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Butte is 66%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Butte receives snow. Months with snowfall average 10 snow days and 16 cm (6 in) of accumulation, with about 21 frost days during winter.
Average wind speeds in Butte are 14 km/h (9 mph). The windiest month is April with peak winds reaching 15 km/h (9 mph) (gusts up to 42 km/h / 26 mph).
Butte averages 5 clear-sky days per month with overall cloud cover around 56%. The clearest skies occur in July.
The annual average dew point in Butte is -1°C (30°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Butte has a Warm-Summer Continental climate, classified as Dfb under the Köppen system. Continental climates experience extreme temperature ranges — hot summers and cold, snowy winters.
The 'feels like' temperature in Butte ranges from -5°C (23°F) to 8°C (46°F) on average. Wind chill makes winters feel noticeably colder than the actual temperature — layered clothing is recommended.
Yes, June is a great time to visit Butte. It earns a climate score of 7.1/10 with Good.
For June in Butte, pack Warm evening layer, Umbrella, Waterproof jacket, Sunscreen (SPF 30+), Sunglasses. With average highs of 21°C (70°F) and 12 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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