Brillion Weather in August
Average highs run from 81°F on August 1 to 77°F on August 31, and lows from 59°F to 54°F. Normal precipitation for the month is 3.28 in over about 10 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
- 79°F
- Average low
- 56°F
- Precipitation
- 3.28 in
- Record high
- 100°FAug 24, 1948
- Record low
- 38°FAug 30, 1915
- Chance of a freeze
- 0%
- Days of 90°F or more
- 1.3
- Daylight
- 14 h 36 min to 13 h 16 min
- Cloud cover
- 61%
- Humidity
- 74%
- Dew point
- 60°F
- Wind
- 9.2 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 | 81°F | 59°F | 95°F 2006 | 48°F 1895 | 34% | 0% |
| Aug 2 | 81°F | 58°F | 97°F 1964 | 46°F 1905 | 34% | 0% |
| Aug 3 | 81°F | 58°F | 94°F 1908 | 44°F 1894 | 34% | 0% |
| Aug 4 | 81°F | 58°F | 94°F 1955 | 40°F 1971 | 34% | 0% |
| Aug 5 | 81°F | 58°F | 95°F 1900 | 45°F 1999 | 34% | 0% |
| Aug 6 | 81°F | 58°F | 98°F 1918 | 45°F 1999 | 34% | 0% |
| Aug 7 | 80°F | 58°F | 94°F 1900 | 45°F 1893 | 34% | 0% |
| Aug 8 | 80°F | 58°F | 97°F 1941 | 40°F 1926 | 33% | 0% |
| Aug 9 | 80°F | 58°F | 96°F 1934 | 43°F 1926 | 33% | 0% |
| Aug 10 | 80°F | 57°F | 98°F 1944 | 45°F 1972 | 33% | 0% |
| Aug 11 | 80°F | 57°F | 98°F 1944 | 42°F 1967 | 33% | 0% |
| Aug 12 | 80°F | 57°F | 94°F 1944 | 45°F 1983 | 33% | 0% |
| Aug 13 | 80°F | 57°F | 95°F 1944 | 45°F 1893 | 33% | 0% |
| Aug 14 | 80°F | 57°F | 93°F 1938 | 45°F 1964 | 33% | 0% |
| Aug 15 | 80°F | 57°F | 92°F 1965 | 45°F 1976 | 33% | 0% |
| Aug 16 | 79°F | 57°F | 98°F 1937 | 46°F 1971 | 33% | 0% |
| Aug 17 | 79°F | 56°F | 93°F 1922 | 47°F 1962 | 33% | 0% |
| Aug 18 | 79°F | 56°F | 92°F 1934 | 42°F 1950 | 33% | 0% |
| Aug 19 | 79°F | 56°F | 94°F 1983 | 48°F 1896 | 33% | 0% |
| Aug 20 | 79°F | 56°F | 97°F 1955 | 44°F 1897 | 32% | 0% |
| Aug 21 | 79°F | 56°F | 99°F 1955 | 44°F 2004 | 32% | 0% |
| Aug 22 | 79°F | 55°F | 96°F 1955 | 44°F 1967 | 32% | 0% |
| Aug 23 | 78°F | 55°F | 96°F 1968 | 43°F 1920 | 32% | 0% |
| Aug 24 | 78°F | 55°F | 100°F 1948 | 43°F 1920 | 32% | 0% |
| Aug 25 | 78°F | 55°F | 95°F 1948 | 41°F 1917 | 32% | 0% |
| Aug 26 | 78°F | 55°F | 94°F 1953 | 45°F 1915 | 32% | 0% |
| Aug 27 | 78°F | 54°F | 96°F 1973 | 40°F 1915 | 32% | 0% |
| Aug 28 | 77°F | 54°F | 94°F 1973 | 40°F 1915 | 32% | 0% |
| Aug 29 | 77°F | 54°F | 93°F 1953 | 41°F 1965 | 32% | 0% |
| Aug 30 | 77°F | 54°F | 94°F 1961 | 38°F 1915 | 32% | 0% |
| Aug 31 | 77°F | 54°F | 95°F 1898 | 38°F 1915 | 32% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- August 1
- sunrise 5:40 AM, sunset 8:16 PM
- August 31
- sunrise 6:14 AM, sunset 7:30 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00471064 (Brillion), public domain. Records: NOAA GHCN-Daily, station USC00475017, 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.