McLean County climate

McLean County Weather in April

NOAA 1991-2020 normals for Calhoun Lock 2, 0.4 km from McLean County

Average highs run from 63°F on April 1 to 73°F on April 30, and lows from 42°F to 52°F. Normal precipitation for the month is 4.48 in over about 10 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 McLean County, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

April at a glance

Average high
68°F
Average low
47°F
Precipitation
4.48 in
Record high
91°FApr 18, 2002
Record low
22°FApr 3, 1992
Chance of a freeze
55%
Daylight
12 h 38 min to 13 h 43 min
Cloud cover
62%
Humidity
79%
Dew point
50°F
Wind
9.6 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 163°F42°F85°F 196323°F 195432%0%
Apr 264°F42°F87°F 201225°F 196132%0%
Apr 364°F42°F85°F 200722°F 199232%0%
Apr 464°F43°F86°F 202327°F 197532%0%
Apr 565°F43°F89°F 198828°F 200432%0%
Apr 665°F43°F87°F 198827°F 195032%0%
Apr 765°F44°F88°F 200124°F 198232%0%
Apr 866°F44°F86°F 197823°F 200732%0%
Apr 966°F45°F88°F 200126°F 197233%0%
Apr 1067°F45°F89°F 199524°F 198233%0%
Apr 1167°F45°F89°F 199524°F 198933%0%
Apr 1267°F46°F87°F 200127°F 199033%0%
Apr 1368°F46°F89°F 200624°F 200733%0%
Apr 1468°F46°F90°F 200624°F 195033%0%
Apr 1568°F47°F88°F 200628°F 195033%0%
Apr 1669°F47°F89°F 200226°F 196234%0%
Apr 1769°F48°F87°F 197727°F 195134%0%
Apr 1869°F48°F91°F 200228°F 200134%0%
Apr 1970°F48°F89°F 200226°F 198334%0%
Apr 2070°F49°F88°F 197125°F 198334%0%
Apr 2170°F49°F87°F 198730°F 198335%0%
Apr 2270°F49°F88°F 198030°F 197835%0%
Apr 2371°F50°F88°F 196529°F 198635%0%
Apr 2471°F50°F89°F 199031°F 196335%0%
Apr 2571°F50°F89°F 198632°F 198335%0%
Apr 2672°F51°F91°F 198935°F 198835%0%
Apr 2772°F51°F91°F 198934°F 197635%0%
Apr 2872°F51°F89°F 198932°F 199235%0%
Apr 2972°F52°F87°F 198732°F 200835%0%
Apr 3073°F52°F88°F 200134°F 195835%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at McLean County, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

April 1
sunrise 6:34 AM, sunset 7:12 PM
April 30
sunrise 5:55 AM, sunset 7:38 PM

Every day of April: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00151227 (Calhoun Lock 2), public domain. Records: NOAA GHCN-Daily, station USC00155067, 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.