Crystal Lawns climate

Crystal Lawns Weather in April

NOAA 1991-2020 normals for Romeoville WFO, 7.2 km from Crystal Lawns

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 daily high and low temperature at Crystal Lawns, in °F, with the record for each date.020406080100151015202530
  • 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
92°FApr 26, 1986
Record low
11°FApr 7, 1982
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.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Apr 155°F35°F85°F 198618°F 198738%5%
Apr 256°F35°F83°F 200321°F 201838%5%
Apr 356°F35°F79°F 201020°F 201838%5%
Apr 457°F36°F80°F 201220°F 198238%5%
Apr 557°F36°F77°F 200521°F 199539%5%
Apr 657°F36°F83°F 198815°F 198239%5%
Apr 758°F37°F82°F 199111°F 198239%4%
Apr 858°F37°F82°F 200115°F 198239%4%
Apr 959°F37°F82°F 200121°F 199739%4%
Apr 1059°F38°F77°F 200121°F 198939%4%
Apr 1159°F38°F83°F 197721°F 198940%4%
Apr 1260°F38°F83°F 197725°F 199040%3%
Apr 1360°F39°F83°F 197725°F 199040%3%
Apr 1460°F39°F84°F 200628°F 198940%3%
Apr 1561°F39°F84°F 200326°F 201441%3%
Apr 1661°F40°F86°F 200226°F 201441%3%
Apr 1762°F40°F87°F 200226°F 202041%3%
Apr 1862°F40°F87°F 197725°F 198341%2%
Apr 1962°F41°F89°F 200224°F 198342%2%
Apr 2063°F41°F85°F 198525°F 198342%2%
Apr 2163°F41°F87°F 198729°F 198242%2%
Apr 2264°F42°F85°F 198525°F 198642%2%
Apr 2364°F42°F90°F 198027°F 198642%2%
Apr 2464°F43°F83°F 202226°F 202442%2%
Apr 2565°F43°F87°F 199031°F 198043%2%
Apr 2665°F43°F92°F 198631°F 197643%1%
Apr 2766°F44°F91°F 198629°F 197643%1%
Apr 2866°F44°F88°F 198630°F 197643%1%
Apr 2966°F44°F78°F 200430°F 197743%1%
Apr 3067°F45°F88°F 198731°F 199244%1%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Crystal Lawns, in percent, and of at least 0.1 inch of snowfall.010203040501102030
  • 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 5:51 AM, sunset 7:50 PM

Every day of April: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00117457 (Romeoville WFO), public domain. Records: NOAA GHCN-Daily, station USC00114530, 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.