Chicago weather in April
In April, Chicago has an average high of 10 °C50 °F and an average low of 4 °C39 °F, with about 94 mm3.7 in of precipitation. It is the 7th warmest month of the year and ranks 6th for precipitation.
How April compares with other months
Compared with March, April is 4.8 °C8.7 °F warmer on average and wetter by 33 mm1.3 in. Compared with May, April is 4.9 °C8.9 °F cooler on average and drier by 23 mm0.9 in. Daylight lasts about 13.3 hours around the middle of the month. Average relative humidity is 81% and the average cloud amount 63%.
Is April a good time to visit Chicago?
April is not among the most comfortable months by our comfort score: it is cool (average high 10 °C50 °F), nights are cold (average low 4 °C39 °F) and it is fairly wet (94 mm3.7 in). The most comfortable months in Chicago are June and July and September.
What to wear in April
For Chicago in April, pack a warm coat, layers and closed shoes and an umbrella or light rain jacket.
April in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Chicago | 1050 | 439 | 943.7 |
| Joliet | 1661 | 439 | 963.8 |
| Elgin | 1558 | 337 | 953.7 |
| Aurora | 1559 | 337 | 953.7 |
| South Bend | 1559 | 338 | 883.5 |
| Rockford | 1559 | 236 | 933.7 |
| Milwaukee | 1355 | 235 | 963.8 |
| Madison | 1456 | 235 | 983.9 |
| Grand Rapids | 1356 | 235 | 963.8 |
Nearby places that are more than 1 °C1.8 °F warmer in April: Joliet, Elgin, Aurora and South Bend.
Other months in Chicago
- January0 °C32 °F / −5 °C23 °F
- February0 °C33 °F / −5 °C23 °F
- March5 °C41 °F / −1 °C31 °F
- April10 °C50 °F / 4 °C39 °F
- May15 °C59 °F / 9 °C47 °F
- June21 °C70 °F / 15 °C59 °F
- July25 °C77 °F / 20 °C68 °F
- August25 °C77 °F / 20 °C68 °F
- September22 °C71 °F / 16 °C62 °F
- October15 °C59 °F / 10 °C49 °F
- November9 °C47 °F / 3 °C38 °F
- December3 °C37 °F / −2 °C29 °F
Frequently asked questions
How warm is Chicago in April?
In April the average high in Chicago is 10 °C (50 °F) and the average low is 4 °C (39 °F).
Does it rain a lot in Chicago in April?
On average about 94 mm (3.7 in) of precipitation falls in April; it ranks 6th of the 12 months.
Is April the warmest month in Chicago?
No. The warmest month in Chicago is July, with an average high of 25 °C (77 °F). The coldest month is February, with an average low of -5 °C (23 °F).
How long is the day in Chicago in April?
In the middle of April the day in Chicago lasts about 13.3 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Chicago in April?
The average relative humidity in April is about 81%. This is a long-term average for the whole day.
How cloudy is Chicago in April?
On average about 63% of the sky is covered by cloud in April. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.