Oconomowoc Weather in April
Average highs run from 50°F on April 1 to 63°F on April 30, and lows from 30°F to 42°F. Normal precipitation for the month is 3.86 in over about 12 wet days.
April day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
April at a glance
- Average high
- 56°F
- Average low
- 36°F
- Precipitation
- 3.86 in
- Snowfall
- 2.0 in
- Record high
- 91°FApr 22, 1980
- Record low
- 10°FApr 1, 1972
- Chance of a freeze
- 100%
- Daylight
- 12 h 45 min to 14 h 05 min
- Cloud cover
- 66%
- Humidity
- 77%
- Dew point
- 37°F
- Wind
- 12.3 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 |
|---|---|---|---|---|---|---|
| Apr 1 | 50°F | 30°F | 81°F 1946 | 10°F 1972 | 36% | 8% |
| Apr 2 | 51°F | 31°F | 82°F 2010 | 11°F 1896 | 37% | 8% |
| Apr 3 | 51°F | 31°F | 78°F 1956 | 10°F 1954 | 37% | 8% |
| Apr 4 | 52°F | 31°F | 79°F 1981 | 13°F 1995 | 38% | 8% |
| Apr 5 | 52°F | 32°F | 78°F 1921 | 13°F 1995 | 38% | 7% |
| Apr 6 | 52°F | 32°F | 81°F 1929 | 13°F 1979 | 38% | 7% |
| Apr 7 | 53°F | 33°F | 84°F 1991 | 10°F 1982 | 39% | 7% |
| Apr 8 | 53°F | 33°F | 79°F 1991 | 13°F 1972 | 39% | 7% |
| Apr 9 | 54°F | 33°F | 76°F 1945 | 17°F 1928 | 39% | 7% |
| Apr 10 | 54°F | 34°F | 87°F 1930 | 15°F 1909 | 40% | 6% |
| Apr 11 | 55°F | 34°F | 83°F 1977 | 18°F 1973 | 40% | 6% |
| Apr 12 | 55°F | 34°F | 83°F 1941 | 16°F 1939 | 40% | 6% |
| Apr 13 | 55°F | 35°F | 82°F 2023 | 16°F 1997 | 41% | 6% |
| Apr 14 | 56°F | 35°F | 80°F 1941 | 16°F 1997 | 41% | 5% |
| Apr 15 | 56°F | 36°F | 84°F 2003 | 17°F 1928 | 41% | 5% |
| Apr 16 | 57°F | 36°F | 87°F 2002 | 16°F 1904 | 41% | 5% |
| Apr 17 | 57°F | 36°F | 86°F 2002 | 21°F 2020 | 41% | 5% |
| Apr 18 | 57°F | 37°F | 87°F 1977 | 22°F 1907 | 42% | 4% |
| Apr 19 | 58°F | 37°F | 86°F 2002 | 20°F 1897 | 42% | 4% |
| Apr 20 | 58°F | 38°F | 86°F 1985 | 20°F 1897 | 42% | 4% |
| Apr 21 | 59°F | 38°F | 85°F 1985 | 21°F 1904 | 42% | 4% |
| Apr 22 | 59°F | 38°F | 91°F 1980 | 24°F 1986 | 42% | 3% |
| Apr 23 | 60°F | 39°F | 85°F 1980 | 22°F 1910 | 42% | 3% |
| Apr 24 | 60°F | 39°F | 84°F 1915 | 18°F 1910 | 42% | 3% |
| Apr 25 | 60°F | 40°F | 85°F 1990 | 25°F 1919 | 42% | 3% |
| Apr 26 | 61°F | 40°F | 86°F 1990 | 21°F 1907 | 42% | 3% |
| Apr 27 | 61°F | 40°F | 86°F 1986 | 25°F 1907 | 42% | 2% |
| Apr 28 | 62°F | 41°F | 86°F 1952 | 27°F 2019 | 42% | 2% |
| Apr 29 | 62°F | 41°F | 86°F 1970 | 25°F 1958 | 42% | 2% |
| Apr 30 | 63°F | 42°F | 88°F 1942 | 27°F 1956 | 42% | 2% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- April 1
- sunrise 6:36 AM, sunset 7:21 PM
- April 30
- sunrise 5:49 AM, sunset 7:54 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00476200 (Oconomowoc Wwtp), public domain. Records: NOAA GHCN-Daily, station USC00478919, 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.