Cascade County Weather in August
Average highs run from 85°F on August 1 to 77°F on August 31, and lows from 55°F to 49°F. Normal precipitation for the month is 1.25 in over about 7 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
- 82°F
- Average low
- 52°F
- Precipitation
- 1.25 in
- Record high
- 106°FAug 5, 1961
- Record low
- 30°FAug 24, 1992
- Chance of a freeze
- 1%
- Days of 90°F or more
- 7.4
- Daylight
- 14 h 55 min to 13 h 24 min
- Cloud cover
- 47%
- Humidity
- 49%
- Dew point
- 45°F
- Wind
- 7.4 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.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Aug 1 | 85°F | 55°F | 102°F 2026 | 38°F 1999 | 22% | 0% |
| Aug 2 | 85°F | 55°F | 98°F 1961 | 41°F 2002 | 22% | 0% |
| Aug 3 | 85°F | 55°F | 100°F 1961 | 40°F 2002 | 22% | 0% |
| Aug 4 | 85°F | 55°F | 102°F 1961 | 38°F 2026 | 22% | 0% |
| Aug 5 | 85°F | 55°F | 106°F 1961 | 42°F 2026 | 22% | 0% |
| Aug 6 | 85°F | 54°F | 104°F 1983 | 42°F 1980 | 22% | 0% |
| Aug 7 | 84°F | 54°F | 101°F 1970 | 35°F 1939 | 22% | 0% |
| Aug 8 | 84°F | 54°F | 102°F 2012 | 43°F 1997 | 22% | 0% |
| Aug 9 | 84°F | 54°F | 101°F 1940 | 42°F 1950 | 22% | 0% |
| Aug 10 | 84°F | 54°F | 104°F 1984 | 40°F 1939 | 22% | 0% |
| Aug 11 | 84°F | 54°F | 101°F 1996 | 40°F 1977 | 22% | 0% |
| Aug 12 | 83°F | 53°F | 105°F 1940 | 38°F 1966 | 22% | 0% |
| Aug 13 | 83°F | 53°F | 99°F 2015 | 40°F 2005 | 22% | 0% |
| Aug 14 | 83°F | 53°F | 101°F 1971 | 36°F 1995 | 22% | 0% |
| Aug 15 | 82°F | 53°F | 101°F 1990 | 40°F 1982 | 22% | 0% |
| Aug 16 | 82°F | 53°F | 101°F 2013 | 39°F 2002 | 23% | 0% |
| Aug 17 | 82°F | 52°F | 101°F 2023 | 36°F 2002 | 23% | 0% |
| Aug 18 | 82°F | 52°F | 101°F 1964 | 40°F 1987 | 23% | 0% |
| Aug 19 | 81°F | 52°F | 100°F 2025 | 40°F 1973 | 23% | 0% |
| Aug 20 | 81°F | 52°F | 98°F 1971 | 40°F 1995 | 23% | 0% |
| Aug 21 | 81°F | 51°F | 98°F 1969 | 38°F 1992 | 23% | |
| Aug 22 | 80°F | 51°F | 98°F 1976 | 32°F 1992 | 23% | |
| Aug 23 | 80°F | 51°F | 102°F 1969 | 32°F 1992 | 23% | |
| Aug 24 | 80°F | 51°F | 106°F 1969 | 30°F 1992 | 23% | |
| Aug 25 | 79°F | 50°F | 100°F 1970 | 31°F 1992 | 23% | |
| Aug 26 | 79°F | 50°F | 96°F 2010 | 38°F 1957 | 23% | |
| Aug 27 | 79°F | 50°F | 98°F 1971 | 39°F 2018 | 23% | |
| Aug 28 | 78°F | 50°F | 99°F 2012 | 36°F 2018 | 24% | |
| Aug 29 | 78°F | 50°F | 97°F 2005 | 34°F 1992 | 24% | |
| Aug 30 | 78°F | 49°F | 97°F 1999 | 35°F 1993 | 24% | |
| Aug 31 | 77°F | 49°F | 98°F 1940 | 37°F 1977 | 24% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- August 1
- sunrise 6:04 AM, sunset 8:59 PM
- August 31
- sunrise 6:43 AM, sunset 8:07 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00243753 (Great Falls WFO), public domain. Records: NOAA GHCN-Daily, station USW00024143, 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.