Lemont Weather in April
Average highs run from 55°F on April 1 to 67°F on April 30, and lows from 35°F to 45°F. Normal precipitation for the month is 4.11 in over about 12 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
- 61°F
- Average low
- 40°F
- Precipitation
- 4.11 in
- Snowfall
- 0.9 in
- Record high
- 89°FApr 18, 2002
- Record low
- 17°FApr 7, 2018
- Chance of a freeze
- 97%
- Daylight
- 12 h 43 min to 13 h 59 min
- Cloud cover
- 67%
- Humidity
- 76%
- Dew point
- 40°F
- Wind
- 12.3 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 | 55°F | 35°F | 83°F 2003 | 21°F 2018 | 38% | 5% |
| Apr 2 | 56°F | 35°F | 81°F 2010 | 18°F 2018 | 38% | 5% |
| Apr 3 | 56°F | 35°F | 79°F 2012 | 22°F 2013 | 38% | 5% |
| Apr 4 | 57°F | 36°F | 76°F 2005 | 24°F 2018 | 38% | 5% |
| Apr 5 | 57°F | 36°F | 77°F 2005 | 19°F 2018 | 39% | 5% |
| Apr 6 | 57°F | 36°F | 80°F 2021 | 22°F 2007 | 39% | 5% |
| Apr 7 | 58°F | 37°F | 82°F 2021 | 17°F 2018 | 39% | 4% |
| Apr 8 | 58°F | 37°F | 79°F 2001 | 19°F 2018 | 39% | 4% |
| Apr 9 | 59°F | 37°F | 77°F 2017 | 22°F 2016 | 39% | 4% |
| Apr 10 | 59°F | 38°F | 83°F 2011 | 23°F 2018 | 39% | 4% |
| Apr 11 | 59°F | 38°F | 79°F 2005 | 29°F 2000 | 40% | 4% |
| Apr 12 | 60°F | 38°F | 81°F 2023 | 27°F 2000 | 40% | 3% |
| Apr 13 | 60°F | 39°F | 83°F 2006 | 29°F 2007 | 40% | 3% |
| Apr 14 | 60°F | 39°F | 85°F 2003 | 27°F 2020 | 40% | 3% |
| Apr 15 | 61°F | 39°F | 88°F 2002 | 24°F 2014 | 41% | 3% |
| Apr 16 | 61°F | 40°F | 88°F 2002 | 25°F 2020 | 41% | 3% |
| Apr 17 | 62°F | 40°F | 84°F 2002 | 27°F 2022 | 41% | 3% |
| Apr 18 | 62°F | 40°F | 89°F 2002 | 27°F 2001 | 41% | 2% |
| Apr 19 | 62°F | 41°F | 81°F 2005 | 31°F 2022 | 42% | 2% |
| Apr 20 | 63°F | 41°F | 78°F 2014 | 29°F 2013 | 42% | 2% |
| Apr 21 | 63°F | 41°F | 79°F 2001 | 30°F 2011 | 42% | 2% |
| Apr 22 | 64°F | 42°F | 83°F 2007 | 27°F 2021 | 42% | 2% |
| Apr 23 | 64°F | 42°F | 83°F 2022 | 29°F 2015 | 42% | 2% |
| Apr 24 | 64°F | 43°F | 83°F 2009 | 31°F 2015 | 42% | 2% |
| Apr 25 | 65°F | 43°F | 82°F 2008 | 32°F 2024 | 43% | 2% |
| Apr 26 | 65°F | 43°F | 82°F 2009 | 32°F 2023 | 43% | 1% |
| Apr 27 | 66°F | 44°F | 86°F 2021 | 31°F 2022 | 43% | 1% |
| Apr 28 | 66°F | 44°F | 83°F 2025 | 31°F 2019 | 43% | 1% |
| Apr 29 | 66°F | 44°F | 81°F 2007 | 31°F 2018 | 43% | 1% |
| Apr 30 | 67°F | 45°F | 87°F 2001 | 34°F 2005 | 44% | 1% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- April 1
- sunrise 6:35 AM, sunset 7:18 PM
- April 30
- sunrise 5:50 AM, sunset 7:49 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00117457 (Romeoville WFO), public domain. Records: NOAA GHCN-Daily, station USC00117457, 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.