Cook County Weather in April
Average highs run from 38°F on April 1 to 49°F on April 30, and lows from 24°F to 33°F. Normal precipitation for the month is 1.84 in over about 7 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
- 44°F
- Average low
- 29°F
- Precipitation
- 1.84 in
- Snowfall
- 3.3 in
- Record high
- 78°FApr 29, 2007
- Record low
- 6°FApr 20, 2013
- Chance of a freeze
- 100%
- Daylight
- 12 h 52 min to 14 h 28 min
- Cloud cover
- 64%
- Humidity
- 74%
- Dew point
- 28°F
- Wind
- 8.1 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 | 38°F | 24°F | 60°F 2010 | 11°F 2018 | 20% | 8% |
| Apr 2 | 39°F | 24°F | 57°F 2015 | 11°F 2014 | 20% | 8% |
| Apr 3 | 39°F | 25°F | 67°F 2021 | 16°F 2013 | 20% | 8% |
| Apr 4 | 39°F | 25°F | 60°F 2017 | 13°F 2018 | 20% | 7% |
| Apr 5 | 40°F | 25°F | 56°F 2021 | 9°F 2007 | 20% | 7% |
| Apr 6 | 40°F | 26°F | 64°F 2004 | 9°F 2003 | 20% | 7% |
| Apr 7 | 40°F | 26°F | 64°F 2005 | 11°F 2026 | 21% | 7% |
| Apr 8 | 41°F | 26°F | 56°F 2012 | 15°F 2003 | 21% | 7% |
| Apr 9 | 41°F | 27°F | 57°F 2017 | 10°F 2016 | 21% | 6% |
| Apr 10 | 42°F | 27°F | 63°F 2010 | 17°F 2007 | 21% | 6% |
| Apr 11 | 42°F | 27°F | 67°F 2003 | 22°F 2009 | 21% | 6% |
| Apr 12 | 42°F | 28°F | 63°F 2023 | 20°F 2016 | 21% | 6% |
| Apr 13 | 43°F | 28°F | 63°F 2015 | 22°F 2020 | 21% | 6% |
| Apr 14 | 43°F | 28°F | 68°F 2006 | 18°F 2020 | 22% | 5% |
| Apr 15 | 43°F | 29°F | 67°F 2010 | 17°F 2014 | 22% | 5% |
| Apr 16 | 44°F | 29°F | 57°F 2010 | 18°F 2014 | 22% | 5% |
| Apr 17 | 44°F | 29°F | 64°F 2010 | 18°F 2012 | 22% | 5% |
| Apr 18 | 44°F | 30°F | 57°F 2005 | 23°F 2011 | 22% | 4% |
| Apr 19 | 45°F | 30°F | 67°F 2005 | 20°F 2011 | 23% | 4% |
| Apr 20 | 45°F | 30°F | 59°F 2006 | 6°F 2013 | 23% | 4% |
| Apr 21 | 46°F | 31°F | 59°F 2014 | 17°F 2013 | 23% | 4% |
| Apr 22 | 46°F | 31°F | 65°F 2007 | 26°F 2004 | 23% | 3% |
| Apr 23 | 46°F | 31°F | 64°F 2007 | 24°F 2002 | 23% | 3% |
| Apr 24 | 47°F | 31°F | 65°F 2012 | 25°F 2023 | 23% | 3% |
| Apr 25 | 47°F | 32°F | 68°F 2019 | 25°F 2002 | 24% | 3% |
| Apr 26 | 47°F | 32°F | 72°F 2001 | 21°F 2002 | 24% | 3% |
| Apr 27 | 48°F | 32°F | 56°F 2000 | 23°F 2017 | 24% | 2% |
| Apr 28 | 48°F | 33°F | 73°F 2007 | 22°F 2022 | 24% | 2% |
| Apr 29 | 48°F | 33°F | 78°F 2007 | 25°F 2018 | 25% | 2% |
| Apr 30 | 49°F | 33°F | 60°F 2020 | 26°F 2003 | 25% | 2% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- April 1
- sunrise 6:40 AM, sunset 7:32 PM
- April 30
- sunrise 5:46 AM, sunset 8:14 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00213282 (Grand Marais), public domain. Records: NOAA GHCN-Daily, station USW00094992, 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.