McHenry County Weather in April
Average highs run from 45°F on April 1 to 62°F on April 30, and lows from 21°F to 33°F. Normal precipitation for the month is 0.98 in over about 3 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
- 54°F
- Average low
- 27°F
- Precipitation
- 0.98 in
- Snowfall
- 3.3 in
- Record high
- 94°FApr 21, 1980
- Record low
- -5°FApr 2, 1975
- Chance of a freeze
- 100%
- Daylight
- 12 h 53 min to 14 h 30 min
- Cloud cover
- 65%
- Humidity
- 61%
- Dew point
- 28°F
- Wind
- 12.1 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 | 45°F | 21°F | 72°F 2012 | -2°F 1975 | 11% | 6% |
| Apr 2 | 46°F | 22°F | 74°F 1988 | -5°F 1975 | 11% | 6% |
| Apr 3 | 47°F | 22°F | 77°F 1988 | -2°F 1954 | 11% | 5% |
| Apr 4 | 47°F | 23°F | 72°F 1991 | -2°F 2002 | 11% | 5% |
| Apr 5 | 48°F | 23°F | 74°F 1991 | -3°F 1979 | 11% | 5% |
| Apr 6 | 48°F | 24°F | 72°F 1988 | -1°F 2018 | 11% | 5% |
| Apr 7 | 49°F | 24°F | 81°F 1988 | 3°F 2018 | 11% | 5% |
| Apr 8 | 50°F | 24°F | 79°F 2005 | 4°F 1997 | 11% | 5% |
| Apr 9 | 50°F | 25°F | 88°F 1977 | -1°F 1997 | 11% | 5% |
| Apr 10 | 51°F | 25°F | 81°F 1971 | 3°F 1997 | 11% | 4% |
| Apr 11 | 52°F | 26°F | 81°F 1949 | 4°F 1957 | 11% | 4% |
| Apr 12 | 52°F | 26°F | 77°F 2003 | 11°F 1950 | 12% | 4% |
| Apr 13 | 53°F | 27°F | 82°F 2003 | 14°F 1950 | 12% | 4% |
| Apr 14 | 53°F | 27°F | 82°F 1958 | 9°F 2020 | 12% | 4% |
| Apr 15 | 54°F | 27°F | 80°F 1971 | 13°F 2000 | 12% | 4% |
| Apr 16 | 55°F | 28°F | 83°F 2006 | 8°F 2022 | 12% | 3% |
| Apr 17 | 55°F | 28°F | 83°F 1994 | 8°F 1953 | 13% | 3% |
| Apr 18 | 56°F | 29°F | 84°F 1987 | 8°F 2022 | 13% | 3% |
| Apr 19 | 56°F | 29°F | 85°F 1952 | 14°F 2022 | 13% | 3% |
| Apr 20 | 57°F | 29°F | 90°F 1980 | 13°F 2013 | 13% | 3% |
| Apr 21 | 57°F | 30°F | 94°F 1980 | 18°F 1966 | 13% | 2% |
| Apr 22 | 58°F | 30°F | 83°F 2026 | 17°F 1967 | 13% | 2% |
| Apr 23 | 58°F | 31°F | 85°F 2012 | 13°F 1967 | 13% | 2% |
| Apr 24 | 59°F | 31°F | 88°F 2012 | 18°F 1967 | 13% | 2% |
| Apr 25 | 60°F | 31°F | 81°F 1977 | 16°F 1950 | 14% | 2% |
| Apr 26 | 60°F | 32°F | 89°F 1952 | 13°F 1950 | 14% | 2% |
| Apr 27 | 61°F | 32°F | 87°F 1952 | 13°F 1950 | 14% | 2% |
| Apr 28 | 61°F | 33°F | 92°F 1952 | 13°F 1958 | 14% | 2% |
| Apr 29 | 62°F | 33°F | 87°F 1949 | 16°F 1966 | 14% | 2% |
| Apr 30 | 62°F | 33°F | 84°F 1988 | 17°F 1966 | 14% | 1% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- April 1
- sunrise 7:20 AM, sunset 8:13 PM
- April 30
- sunrise 6:25 AM, sunset 8:55 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00328792 (Towner 2 Ne), public domain. Records: NOAA GHCN-Daily, station USW00024013, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.