McHenry County Weather in February
Average highs run from 32°F on February 1 to 40°F on February 28, and lows from 14°F to 20°F. Normal precipitation for the month is 1.84 in over about 8 wet days.
February day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
February at a glance
- Average high
- 35°F
- Average low
- 16°F
- Precipitation
- 1.84 in
- Snowfall
- 9.0 in
- Record high
- 73°FFeb 28, 2024
- Record low
- -27°FFeb 1, 2019
- Chance of a freeze
- 100%
- Daylight
- 10 h 01 min to 11 h 12 min
- Cloud cover
- 65%
- Humidity
- 86%
- Dew point
- 19°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 |
|---|---|---|---|---|---|---|
| Feb 1 | 32°F | 14°F | 60°F 1989 | -27°F 2019 | 27% | 20% |
| Feb 2 | 33°F | 14°F | 49°F 1968 | -24°F 1959 | 27% | 20% |
| Feb 3 | 33°F | 14°F | 48°F 1987 | -27°F 1996 | 27% | 20% |
| Feb 4 | 33°F | 14°F | 54°F 1992 | -27°F 1996 | 27% | 20% |
| Feb 5 | 33°F | 14°F | 49°F 1962 | -21°F 1996 | 27% | 20% |
| Feb 6 | 33°F | 15°F | 54°F 1964 | -19°F 2007 | 27% | 20% |
| Feb 7 | 33°F | 15°F | 48°F 1964 | -15°F 2021 | 27% | 19% |
| Feb 8 | 33°F | 15°F | 50°F 1987 | -16°F 2021 | 27% | 19% |
| Feb 9 | 34°F | 15°F | 56°F 1990 | -13°F 1979 | 27% | 19% |
| Feb 10 | 34°F | 15°F | 51°F 1966 | -19°F 1994 | 27% | 19% |
| Feb 11 | 34°F | 15°F | 57°F 2009 | -17°F 1994 | 27% | 19% |
| Feb 12 | 34°F | 16°F | 66°F 1999 | -12°F 1967 | 27% | 19% |
| Feb 13 | 35°F | 16°F | 54°F 1984 | -10°F 1967 | 27% | 19% |
| Feb 14 | 35°F | 16°F | 49°F 2026 | -11°F 2021 | 27% | 18% |
| Feb 15 | 35°F | 16°F | 55°F 1954 | -11°F 2020 | 27% | 18% |
| Feb 16 | 35°F | 16°F | 60°F 1976 | -11°F 1958 | 27% | 18% |
| Feb 17 | 36°F | 17°F | 61°F 2026 | -11°F 1958 | 27% | 18% |
| Feb 18 | 36°F | 17°F | 62°F 2017 | -14°F 2006 | 27% | 18% |
| Feb 19 | 36°F | 17°F | 63°F 2017 | -14°F 2006 | 27% | 17% |
| Feb 20 | 36°F | 17°F | 63°F 2017 | -15°F 2015 | 27% | 17% |
| Feb 21 | 37°F | 18°F | 60°F 2017 | -11°F 2015 | 27% | 17% |
| Feb 22 | 37°F | 18°F | 64°F 2017 | -9°F 1963 | 27% | 17% |
| Feb 23 | 37°F | 18°F | 67°F 2017 | -10°F 2015 | 27% | 17% |
| Feb 24 | 38°F | 18°F | 61°F 2000 | -12°F 1993 | 27% | 16% |
| Feb 25 | 38°F | 19°F | 60°F 1957 | -13°F 1993 | 27% | 16% |
| Feb 26 | 39°F | 19°F | 66°F 2000 | -11°F 1993 | 27% | 16% |
| Feb 27 | 39°F | 19°F | 65°F 2024 | -13°F 1994 | 27% | 16% |
| Feb 28 | 39°F | 20°F | 73°F 2024 | -15°F 2015 | 27% | 16% |
| Feb 29 | 40°F | 20°F | 59°F 2016 | -3°F 1980 | 27% | 15% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CST).
- February 1
- sunrise 7:07 AM, sunset 5:08 PM
- February 28
- sunrise 6:31 AM, sunset 5:43 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00112048 (Crystal Lake 4NW), public domain. Records: NOAA GHCN-Daily, station USC00471205, 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.