McLean Weather in January
Average highs run from 51°F on January 1 to 54°F on January 31, and lows from 27°F to 28°F. Normal precipitation for the month is 0.91 in over about 3 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
- 52°F
- Average low
- 27°F
- Precipitation
- 0.91 in
- Snowfall
- 1.6 in
- Record high
- 83°FJan 8, 2006
- Record low
- -6°FJan 22, 1966
- Chance of a freeze
- 100%
- Daylight
- 9 h 50 min to 10 h 28 min
- Cloud cover
- 50%
- Humidity
- 61%
- Dew point
- 24°F
- Wind
- 10.7 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 | 51°F | 27°F | 75°F 2012 | 0°F 1969 | 8% | 3% |
| Jan 2 | 51°F | 27°F | 72°F 1997 | -5°F 1979 | 8% | 3% |
| Jan 3 | 51°F | 27°F | 80°F 1997 | -1°F 1979 | 8% | 3% |
| Jan 4 | 51°F | 27°F | 79°F 1997 | 2°F 1974 | 8% | 3% |
| Jan 5 | 51°F | 27°F | 79°F 1997 | -1°F 1971 | 8% | 3% |
| Jan 6 | 51°F | 27°F | 76°F 1994 | -1°F 2004 | 8% | 3% |
| Jan 7 | 51°F | 27°F | 76°F 1965 | -3°F 1988 | 8% | 3% |
| Jan 8 | 51°F | 27°F | 83°F 2006 | -3°F 1988 | 9% | 3% |
| Jan 9 | 52°F | 27°F | 74°F 2002 | -2°F 1977 | 9% | 3% |
| Jan 10 | 52°F | 27°F | 74°F 2017 | -2°F 1977 | 9% | 3% |
| Jan 11 | 52°F | 27°F | 75°F 1990 | 1°F 1977 | 9% | 3% |
| Jan 12 | 52°F | 27°F | 74°F 2000 | 2°F 1997 | 9% | 3% |
| Jan 13 | 52°F | 27°F | 71°F 2014 | 2°F 1997 | 9% | 3% |
| Jan 14 | 52°F | 27°F | 78°F 1980 | -3°F 1979 | 9% | 3% |
| Jan 15 | 52°F | 27°F | 70°F 2020 | -3°F 1979 | 9% | 3% |
| Jan 16 | 52°F | 27°F | 73°F 1999 | 2°F 2018 | 9% | 3% |
| Jan 17 | 53°F | 27°F | 71°F 1974 | 0°F 2018 | 9% | 3% |
| Jan 18 | 53°F | 27°F | 69°F 2011 | -2°F 1984 | 9% | 3% |
| Jan 19 | 53°F | 27°F | 70°F 1976 | -4°F 1984 | 9% | 3% |
| Jan 20 | 53°F | 27°F | 77°F 1986 | -1°F 1984 | 9% | 3% |
| Jan 21 | 53°F | 27°F | 82°F 1986 | -4°F 2025 | 9% | 3% |
| Jan 22 | 53°F | 27°F | 78°F 1974 | -6°F 1966 | 9% | 3% |
| Jan 23 | 53°F | 27°F | 73°F 2009 | -1°F 1966 | 10% | 3% |
| Jan 24 | 53°F | 27°F | 78°F 1972 | 0°F 2026 | 10% | 3% |
| Jan 25 | 54°F | 27°F | 76°F 1970 | -1°F 2026 | 10% | 3% |
| Jan 26 | 54°F | 27°F | 72°F 1969 | 0°F 1966 | 10% | 3% |
| Jan 27 | 54°F | 27°F | 72°F 1969 | 3°F 2026 | 10% | 3% |
| Jan 28 | 54°F | 27°F | 76°F 1970 | 5°F 1979 | 10% | 3% |
| Jan 29 | 54°F | 27°F | 77°F 1986 | -5°F 1966 | 10% | 3% |
| Jan 30 | 54°F | 27°F | 76°F 2016 | 2°F 1966 | 10% | 3% |
| Jan 31 | 54°F | 28°F | 78°F 2016 | -2°F 1985 | 10% | 3% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CST).
- January 1
- sunrise 7:51 AM, sunset 5:41 PM
- January 31
- sunrise 7:42 AM, sunset 6:10 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00415770 (Mc Lean), public domain. Records: NOAA GHCN-Daily, station USC00416776, 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.