Winnetka Weather in January
Average highs run from 69°F on January 1 to 70°F on January 31, and lows from 43°F to 43°F. Normal precipitation for the month is 3.73 in over about 6 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
- 70°F
- Average low
- 43°F
- Precipitation
- 3.73 in
- Record high
- 92°FJan 31, 2003
- Record low
- 22°FJan 12, 1949
- Chance of a freeze
- 53%
- Daylight
- 9 h 56 min to 10 h 32 min
- Cloud cover
- 47%
- Humidity
- 65%
- Dew point
- 43°F
- Wind
- 8.9 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Jan 1 | 69°F | 43°F | 79°F 2012 | 30°F 2015 | 20% |
| Jan 2 | 69°F | 43°F | 83°F 2018 | 32°F 2015 | 20% |
| Jan 3 | 69°F | 43°F | 84°F 2012 | 34°F 2015 | 20% |
| Jan 4 | 69°F | 43°F | 86°F 2003 | 24°F 1950 | 20% |
| Jan 5 | 69°F | 43°F | 84°F 2012 | 26°F 1950 | 20% |
| Jan 6 | 70°F | 43°F | 81°F 2015 | 31°F 1950 | 20% |
| Jan 7 | 70°F | 43°F | 88°F 1962 | 24°F 1950 | 20% |
| Jan 8 | 70°F | 43°F | 82°F 1962 | 29°F 1949 | 20% |
| Jan 9 | 70°F | 43°F | 82°F 2007 | 30°F 1949 | 20% |
| Jan 10 | 70°F | 43°F | 79°F 2004 | 27°F 1949 | 20% |
| Jan 11 | 70°F | 43°F | 82°F 2009 | 29°F 1949 | 20% |
| Jan 12 | 70°F | 43°F | 84°F 2009 | 22°F 1949 | 20% |
| Jan 13 | 70°F | 43°F | 84°F 2009 | 27°F 1950 | 20% |
| Jan 14 | 70°F | 43°F | 86°F 2021 | 26°F 2007 | 20% |
| Jan 15 | 70°F | 43°F | 88°F 2021 | 29°F 1950 | 20% |
| Jan 16 | 70°F | 43°F | 89°F 2021 | 30°F 1950 | 20% |
| Jan 17 | 70°F | 43°F | 88°F 2011 | 31°F 1949 | 20% |
| Jan 18 | 70°F | 43°F | 84°F 2014 | 31°F 1949 | 20% |
| Jan 19 | 70°F | 43°F | 83°F 2005 | 35°F 2002 | 21% |
| Jan 20 | 70°F | 43°F | 83°F 2014 | 35°F 2008 | 21% |
| Jan 21 | 70°F | 43°F | 81°F 1950 | 36°F 1962 | 21% |
| Jan 22 | 70°F | 43°F | 80°F 2014 | 34°F 1962 | 21% |
| Jan 23 | 70°F | 43°F | 79°F 2003 | 32°F 1949 | 21% |
| Jan 24 | 70°F | 43°F | 79°F 2003 | 29°F 1949 | 21% |
| Jan 25 | 70°F | 43°F | 84°F 2003 | 32°F 1950 | 21% |
| Jan 26 | 70°F | 43°F | 83°F 2012 | 25°F 1950 | 21% |
| Jan 27 | 70°F | 43°F | 81°F 2019 | 26°F 1950 | 21% |
| Jan 28 | 70°F | 43°F | 81°F 2018 | 28°F 1949 | 21% |
| Jan 29 | 70°F | 43°F | 83°F 2018 | 34°F 2002 | 21% |
| Jan 30 | 70°F | 43°F | 86°F 2003 | 27°F 1949 | 21% |
| Jan 31 | 70°F | 43°F | 92°F 2003 | 29°F 1949 | 21% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (PST).
- January 1
- sunrise 7:00 AM, sunset 4:56 PM
- January 31
- sunrise 6:52 AM, sunset 5:24 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00049785 (Woodland Hills Pierce College), public domain. Records: NOAA GHCN-Daily, station USW00023130, 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.