Glacier County Weather in August
Average highs run from 76°F on August 1 to 69°F on August 31, and lows from 46°F to 42°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 low
- Normal high
- Record high
- Record low
August at a glance
- Average high
- 73°F
- Average low
- 45°F
- Precipitation
- 1.28 in
- Record high
- 107°FAug 5, 1961
- Record low
- 25°FAug 25, 1910
- Chance of a freeze
- 26%
- Daylight
- 15 h 04 min to 13 h 28 min
- Cloud cover
- 49%
- Humidity
- 59%
- Dew point
- 43°F
- Wind
- 6.3 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Aug 1 | 76°F | 46°F | 98°F 2026 | 37°F 2002 | 25% |
| Aug 2 | 76°F | 46°F | 98°F 1961 | 38°F 1926 | 25% |
| Aug 3 | 76°F | 46°F | 98°F 1914 | 37°F 1988 | 25% |
| Aug 4 | 76°F | 46°F | 101°F 1961 | 36°F 1923 | 25% |
| Aug 5 | 76°F | 46°F | 107°F 1961 | 34°F 1924 | 25% |
| Aug 6 | 76°F | 46°F | 103°F 1983 | 35°F 1909 | 25% |
| Aug 7 | 76°F | 46°F | 100°F 1930 | 32°F 1939 | 25% |
| Aug 8 | 76°F | 46°F | 97°F 1930 | 37°F 1980 | 25% |
| Aug 9 | 75°F | 46°F | 101°F 1930 | 35°F 1946 | 25% |
| Aug 10 | 75°F | 46°F | 102°F 2018 | 32°F 1926 | 25% |
| Aug 11 | 75°F | 45°F | 97°F 1996 | 35°F 1916 | 25% |
| Aug 12 | 75°F | 45°F | 96°F 1940 | 35°F 1966 | 25% |
| Aug 13 | 75°F | 45°F | 97°F 1930 | 35°F 2005 | 25% |
| Aug 14 | 74°F | 45°F | 95°F 2023 | 36°F 1928 | 26% |
| Aug 15 | 74°F | 45°F | 99°F 2023 | 33°F 1935 | 26% |
| Aug 16 | 74°F | 45°F | 95°F 1962 | 31°F 1910 | 26% |
| Aug 17 | 74°F | 44°F | 97°F 2020 | 33°F 1946 | 26% |
| Aug 18 | 73°F | 44°F | 95°F 2008 | 36°F 1910 | 26% |
| Aug 19 | 73°F | 44°F | 93°F 1917 | 31°F 1950 | 26% |
| Aug 20 | 73°F | 44°F | 93°F 2022 | 35°F 1938 | 26% |
| Aug 21 | 72°F | 44°F | 95°F 1969 | 33°F 1992 | 26% |
| Aug 22 | 72°F | 44°F | 94°F 1976 | 31°F 1992 | 26% |
| Aug 23 | 72°F | 44°F | 98°F 1930 | 31°F 1992 | 26% |
| Aug 24 | 72°F | 43°F | 102°F 1930 | 28°F 1992 | 26% |
| Aug 25 | 71°F | 43°F | 95°F 1926 | 25°F 1910 | 26% |
| Aug 26 | 71°F | 43°F | 95°F 2010 | 31°F 1910 | 27% |
| Aug 27 | 71°F | 43°F | 93°F 1971 | 29°F 1911 | 27% |
| Aug 28 | 70°F | 43°F | 95°F 2012 | 30°F 1909 | 27% |
| Aug 29 | 70°F | 43°F | 93°F 2013 | 31°F 1909 | 27% |
| Aug 30 | 69°F | 42°F | 96°F 1921 | 32°F 2003 | 27% |
| Aug 31 | 69°F | 42°F | 97°F 1991 | 30°F 1930 | 27% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (MDT).
- August 1
- sunrise 6:06 AM, sunset 9:10 PM
- August 31
- sunrise 6:48 AM, sunset 8:16 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00004130 (St. Mary 1 Ssw), public domain. Records: NOAA GHCN-Daily, station USW00024137, 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.