McHenry County Weather in January
Average highs run from 19°F on January 1 to 20°F on January 31, and lows from -2°F to -4°F. Normal precipitation for the month is 0.48 in over about 4 wet days.
January day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
January at a glance
- Average high
- 19°F
- Average low
- -4°F
- Precipitation
- 0.48 in
- Snowfall
- 6.9 in
- Record high
- 61°FJan 5, 2012
- Record low
- -34°FJan 18, 1950
- Chance of a freeze
- 100%
- Daylight
- 8 h 26 min to 9 h 29 min
- Cloud cover
- 63%
- Humidity
- 89%
- Dew point
- 7°F
- Wind
- 11.6 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 |
|---|---|---|---|---|---|---|
| Jan 1 | 19°F | -2°F | 50°F 1998 | -27°F 1993 | 12% | 12% |
| Jan 2 | 19°F | -2°F | 46°F 1997 | -23°F 1968 | 12% | 12% |
| Jan 3 | 19°F | -3°F | 47°F 2012 | -28°F 1950 | 12% | 12% |
| Jan 4 | 19°F | -3°F | 49°F 2008 | -32°F 1950 | 12% | 12% |
| Jan 5 | 19°F | -3°F | 61°F 2012 | -25°F 2005 | 12% | 12% |
| Jan 6 | 18°F | -3°F | 45°F 2006 | -24°F 1950 | 12% | 12% |
| Jan 7 | 18°F | -3°F | 47°F 1963 | -27°F 1966 | 12% | 12% |
| Jan 8 | 18°F | -3°F | 49°F 2002 | -26°F 1989 | 12% | 12% |
| Jan 9 | 18°F | -4°F | 50°F 2012 | -28°F 1982 | 12% | 11% |
| Jan 10 | 18°F | -4°F | 46°F 2012 | -29°F 1982 | 12% | 11% |
| Jan 11 | 18°F | -4°F | 49°F 1987 | -25°F 1974 | 12% | 11% |
| Jan 12 | 18°F | -4°F | 56°F 1987 | -24°F 2017 | 12% | 11% |
| Jan 13 | 18°F | -4°F | 51°F 2021 | -26°F 2024 | 12% | 11% |
| Jan 14 | 18°F | -4°F | 52°F 2006 | -28°F 2009 | 12% | 11% |
| Jan 15 | 18°F | -4°F | 45°F 1961 | -32°F 2009 | 11% | 11% |
| Jan 16 | 18°F | -4°F | 48°F 1961 | -33°F 1954 | 11% | 10% |
| Jan 17 | 18°F | -4°F | 45°F 1972 | -30°F 1950 | 11% | 10% |
| Jan 18 | 18°F | -4°F | 44°F 2017 | -34°F 1950 | 11% | 10% |
| Jan 19 | 18°F | -5°F | 44°F 1986 | -34°F 1996 | 11% | 10% |
| Jan 20 | 18°F | -5°F | 43°F 1992 | -34°F 1954 | 11% | 10% |
| Jan 21 | 18°F | -5°F | 45°F 1968 | -31°F 1949 | 11% | 10% |
| Jan 22 | 18°F | -5°F | 41°F 2015 | -28°F 1966 | 11% | 10% |
| Jan 23 | 19°F | -5°F | 48°F 1981 | -34°F 1966 | 11% | 10% |
| Jan 24 | 19°F | -5°F | 46°F 1973 | -33°F 1966 | 11% | 10% |
| Jan 25 | 19°F | -5°F | 51°F 2012 | -32°F 1950 | 11% | 10% |
| Jan 26 | 19°F | -5°F | 49°F 2012 | -33°F 1950 | 11% | 10% |
| Jan 27 | 19°F | -5°F | 49°F 2015 | -28°F 1966 | 11% | 10% |
| Jan 28 | 19°F | -5°F | 45°F 1992 | -33°F 1966 | 11% | 10% |
| Jan 29 | 19°F | -5°F | 48°F 2016 | -34°F 1951 | 11% | 10% |
| Jan 30 | 20°F | -4°F | 50°F 2024 | -29°F 1950 | 11% | 10% |
| Jan 31 | 20°F | -4°F | 57°F 2024 | -25°F 1959 | 11% | 10% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CST).
- January 1
- sunrise 8:33 AM, sunset 4:59 PM
- January 31
- sunrise 8:12 AM, sunset 5:41 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.