Mankato Weather in August
Average highs run from 90°F on August 1 to 84°F on August 31, and lows from 66°F to 59°F. Normal precipitation for the month is 3.55 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
- 88°F
- Average low
- 63°F
- Precipitation
- 3.55 in
- Record high
- 111°FAug 15, 1983
- Record low
- 40°FAug 30, 1915
- Chance of a freeze
- 0%
- Days of 90°F or more
- 15.7
- Daylight
- 14 h 14 min to 13 h 05 min
- Cloud cover
- 49%
- Humidity
- 64%
- Dew point
- 62°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 | 90°F | 66°F | 108°F 1952 | 49°F 1913 | 26% | 0% |
| Aug 2 | 90°F | 65°F | 110°F 1964 | 56°F 1974 | 26% | 0% |
| Aug 3 | 90°F | 65°F | 110°F 1918 | 47°F 1974 | 26% | 0% |
| Aug 4 | 90°F | 65°F | 107°F 1913 | 47°F 1974 | 26% | 0% |
| Aug 5 | 90°F | 65°F | 110°F 1913 | 51°F 1915 | 25% | 0% |
| Aug 6 | 90°F | 65°F | 108°F 1970 | 55°F 1990 | 25% | 0% |
| Aug 7 | 90°F | 65°F | 109°F 1913 | 51°F 1989 | 25% | 0% |
| Aug 8 | 90°F | 65°F | 110°F 1913 | 50°F 1922 | 25% | 0% |
| Aug 9 | 89°F | 64°F | 106°F 1913 | 52°F 1954 | 25% | 0% |
| Aug 10 | 89°F | 64°F | 108°F 2006 | 51°F 1914 | 25% | 0% |
| Aug 11 | 89°F | 64°F | 104°F 1975 | 50°F 1967 | 25% | 0% |
| Aug 12 | 89°F | 64°F | 107°F 2026 | 46°F 1964 | 25% | 0% |
| Aug 13 | 89°F | 64°F | 110°F 1913 | 49°F 1920 | 24% | 0% |
| Aug 14 | 88°F | 64°F | 108°F 1913 | 42°F 1920 | 24% | 0% |
| Aug 15 | 88°F | 63°F | 111°F 1983 | 50°F 1955 | 24% | 0% |
| Aug 16 | 88°F | 63°F | 111°F 1983 | 51°F 1955 | 24% | 0% |
| Aug 17 | 88°F | 63°F | 110°F 1983 | 52°F 1955 | 24% | 0% |
| Aug 18 | 88°F | 63°F | 106°F 1983 | 52°F 1960 | 24% | 0% |
| Aug 19 | 87°F | 62°F | 105°F 1913 | 49°F 1967 | 24% | 0% |
| Aug 20 | 87°F | 62°F | 106°F 2023 | 50°F 2012 | 24% | 0% |
| Aug 21 | 87°F | 62°F | 105°F 1922 | 45°F 1956 | 23% | 0% |
| Aug 22 | 87°F | 62°F | 105°F 2023 | 45°F 1923 | 23% | 0% |
| Aug 23 | 86°F | 61°F | 105°F 1922 | 45°F 1916 | 23% | 0% |
| Aug 24 | 86°F | 61°F | 106°F 1922 | 48°F 1957 | 23% | 0% |
| Aug 25 | 86°F | 61°F | 109°F 1913 | 49°F 2015 | 23% | 0% |
| Aug 26 | 86°F | 60°F | 108°F 1955 | 52°F 1958 | 23% | 0% |
| Aug 27 | 85°F | 60°F | 109°F 1913 | 44°F 1967 | 23% | 0% |
| Aug 28 | 85°F | 60°F | 108°F 2000 | 44°F 1916 | 23% | 0% |
| Aug 29 | 85°F | 59°F | 105°F 1984 | 47°F 1917 | 23% | 0% |
| Aug 30 | 85°F | 59°F | 110°F 1913 | 40°F 1915 | 23% | 0% |
| Aug 31 | 84°F | 59°F | 106°F 1913 | 41°F 1955 | 23% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- August 1
- sunrise 6:32 AM, sunset 8:46 PM
- August 31
- sunrise 7:00 AM, sunset 8:05 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00144982 (Mankato), public domain. Records: NOAA GHCN-Daily, station USC00147542, 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.