Butte climate

Butte Weather in August

NOAA 1991-2020 normals for Butte Bert Mooney AP, 5.1 km from Butte

Average highs run from 83°F on August 1 to 75°F on August 31, and lows from 47°F to 40°F. Normal precipitation for the month is 1.28 in over about 8 wet days.

August day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Butte, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
80°F
Average low
44°F
Precipitation
1.28 in
Record high
99°FAug 3, 2000
Record low
23°FAug 25, 1992
Chance of a freeze
30%
Days of 90°F or more
2.6
Daylight
14 h 46 min to 13 h 20 min
Cloud cover
44%
Humidity
52%
Dew point
40°F
Wind
4.5 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Aug 183°F47°F95°F 200034°F 200226%0%
Aug 283°F47°F95°F 193432°F 193726%0%
Aug 383°F47°F99°F 200034°F 193726%0%
Aug 483°F46°F96°F 196133°F 199625%0%
Aug 583°F46°F99°F 196134°F 193525%0%
Aug 683°F46°F97°F 198336°F 196925%0%
Aug 782°F46°F96°F 198333°F 194625%0%
Aug 882°F46°F92°F 193033°F 194625%0%
Aug 982°F46°F96°F 200031°F 199525%0%
Aug 1082°F45°F96°F 192835°F 201625%0%
Aug 1181°F45°F97°F 201833°F 194725%0%
Aug 1281°F45°F99°F 194034°F 198724%0%
Aug 1381°F45°F93°F 194032°F 194724%0%
Aug 1481°F45°F93°F 193329°F 195924%0%
Aug 1580°F44°F94°F 202334°F 193824%0%
Aug 1680°F44°F93°F 192033°F 193524%0%
Aug 1780°F44°F93°F 191930°F 194624%0%
Aug 1879°F44°F93°F 197731°F 199524%0%
Aug 1979°F43°F93°F 194230°F 199524%0%
Aug 2079°F43°F91°F 197131°F 193824%0%
Aug 2179°F43°F92°F 200929°F 196624%0%
Aug 2278°F43°F94°F 197632°F 196624%0%
Aug 2378°F42°F94°F 196930°F 199224%0%
Aug 2478°F42°F95°F 196931°F 191024%0%
Aug 2577°F42°F94°F 198123°F 199224%0%
Aug 2677°F42°F91°F 189426°F 199224%0%
Aug 2777°F41°F93°F 192429°F 194524%0%
Aug 2876°F41°F93°F 193426°F 196024%0%
Aug 2976°F41°F91°F 199827°F 193724%0%
Aug 3076°F41°F89°F 195425°F 196524%0%
Aug 3175°F40°F91°F 195527°F 200624%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Butte, in percent, and of at least 0.1 inch of snowfall.01020301102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MDT).

August 1
sunrise 6:13 AM, sunset 8:59 PM
August 31
sunrise 6:50 AM, sunset 8:10 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00024135 (Butte Bert Mooney AP), public domain. Records: NOAA GHCN-Daily, station USW00024135, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.