South Milwaukee Weather in August
Average highs run from 81°F on August 1 to 78°F on August 31, and lows from 66°F to 61°F. Normal precipitation for the month is 3.80 in over about 11 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
- 64°F
- Precipitation
- 3.80 in
- Record high
- 103°FAug 1, 1988
- Record low
- 44°FAug 18, 1962
- Chance of a freeze
- 0%
- Days of 90°F or more
- 2.0
- Daylight
- 14 h 29 min to 13 h 13 min
- Cloud cover
- 62%
- Humidity
- 74%
- Dew point
- 61°F
- Wind
- 8.5 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.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Aug 1 | 81°F | 66°F | 103°F 1988 | 49°F 1947 | 31% | 0% |
| Aug 2 | 80°F | 66°F | 99°F 1988 | 51°F 1962 | 31% | 0% |
| Aug 3 | 80°F | 66°F | 100°F 1988 | 49°F 1966 | 31% | 0% |
| Aug 4 | 80°F | 66°F | 99°F 1947 | 49°F 1972 | 31% | 0% |
| Aug 5 | 80°F | 66°F | 98°F 1947 | 48°F 1972 | 32% | 0% |
| Aug 6 | 80°F | 66°F | 94°F 1968 | 50°F 1971 | 32% | 0% |
| Aug 7 | 80°F | 66°F | 94°F 1979 | 50°F 1989 | 32% | 0% |
| Aug 8 | 80°F | 65°F | 97°F 1983 | 50°F 1976 | 32% | 0% |
| Aug 9 | 80°F | 65°F | 95°F 2001 | 49°F 1964 | 32% | 0% |
| Aug 10 | 80°F | 65°F | 97°F 1944 | 50°F 1962 | 33% | 0% |
| Aug 11 | 80°F | 65°F | 97°F 1941 | 47°F 1962 | 33% | 0% |
| Aug 12 | 80°F | 65°F | 94°F 1988 | 48°F 1967 | 33% | 0% |
| Aug 13 | 80°F | 65°F | 95°F 1944 | 48°F 1961 | 33% | 0% |
| Aug 14 | 80°F | 65°F | 96°F 1944 | 47°F 1962 | 33% | 0% |
| Aug 15 | 80°F | 65°F | 93°F 1955 | 46°F 1962 | 33% | 0% |
| Aug 16 | 80°F | 65°F | 100°F 1988 | 46°F 1979 | 34% | 0% |
| Aug 17 | 79°F | 64°F | 100°F 1988 | 50°F 1963 | 34% | 0% |
| Aug 18 | 79°F | 64°F | 97°F 1947 | 44°F 1962 | 34% | 0% |
| Aug 19 | 79°F | 64°F | 98°F 1955 | 50°F 1977 | 34% | 0% |
| Aug 20 | 79°F | 64°F | 97°F 1955 | 44°F 1950 | 34% | 0% |
| Aug 21 | 79°F | 64°F | 100°F 1955 | 46°F 1950 | 35% | 0% |
| Aug 22 | 79°F | 64°F | 92°F 1947 | 45°F 1969 | 35% | 0% |
| Aug 23 | 79°F | 63°F | 101°F 2023 | 49°F 1940 | 35% | 0% |
| Aug 24 | 79°F | 63°F | 100°F 1948 | 48°F 1942 | 35% | 0% |
| Aug 25 | 79°F | 63°F | 94°F 1948 | 46°F 1958 | 35% | 0% |
| Aug 26 | 78°F | 63°F | 96°F 1953 | 47°F 1964 | 35% | 0% |
| Aug 27 | 78°F | 62°F | 99°F 1973 | 50°F 1982 | 35% | 0% |
| Aug 28 | 78°F | 62°F | 96°F 1973 | 45°F 1965 | 35% | 0% |
| Aug 29 | 78°F | 62°F | 96°F 1973 | 44°F 1965 | 35% | 0% |
| Aug 30 | 78°F | 62°F | 96°F 1958 | 47°F 1946 | 35% | 0% |
| Aug 31 | 78°F | 61°F | 97°F 1953 | 46°F 2009 | 35% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- August 1
- sunrise 5:43 AM, sunset 8:12 PM
- August 31
- sunrise 6:15 AM, sunset 7:28 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00477964 (South Milwaukee Wwtp), public domain. Records: NOAA GHCN-Daily, station USW00014839, 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.