Keystone climate

Keystone Weather in April

NOAA 1991-2020 normals for Belle Plaine, 14.5 km from Keystone

Average highs run from 54°F on April 1 to 65°F on April 30, and lows from 32°F to 43°F. Normal precipitation for the month is 3.68 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 Keystone, in °F, with the record for each date.020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

April at a glance

Average high
60°F
Average low
37°F
Precipitation
3.68 in
Snowfall
0.8 in
Record high
91°FApr 29, 1952
Record low
4°FApr 6, 1982
Chance of a freeze
99%
Daylight
12 h 44 min to 14 h 01 min
Cloud cover
65%
Humidity
74%
Dew point
40°F
Wind
12.5 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 154°F32°F85°F 200314°F 196428%4%
Apr 255°F32°F84°F 198114°F 201828%4%
Apr 355°F32°F81°F 198114°F 197529%3%
Apr 455°F33°F82°F 19429°F 197529%3%
Apr 556°F33°F82°F 200011°F 201830%3%
Apr 656°F34°F86°F 19914°F 198230%3%
Apr 757°F34°F80°F 19915°F 198231%3%
Apr 857°F34°F77°F 202013°F 197231%3%
Apr 958°F35°F78°F 197716°F 199731%3%
Apr 1058°F35°F86°F 201117°F 196032%3%
Apr 1158°F35°F86°F 201113°F 198232%3%
Apr 1259°F36°F81°F 197718°F 195033%3%
Apr 1359°F36°F85°F 200618°F 195033%3%
Apr 1460°F37°F86°F 200321°F 195033%2%
Apr 1560°F37°F87°F 200219°F 202034%2%
Apr 1660°F37°F87°F 196417°F 202034%2%
Apr 1761°F38°F85°F 195821°F 190434%2%
Apr 1861°F38°F88°F 194822°F 195334%2%
Apr 1962°F38°F85°F 194622°F 198335%2%
Apr 2062°F39°F88°F 198722°F 201835%2%
Apr 2162°F39°F87°F 198720°F 202135%2%
Apr 2263°F40°F87°F 196022°F 198635%2%
Apr 2363°F40°F86°F 196025°F 195636%1%
Apr 2463°F40°F86°F 200920°F 195636%1%
Apr 2564°F41°F89°F 194927°F 202136%1%
Apr 2664°F41°F86°F 196222°F 202336%1%
Apr 2764°F42°F88°F 198129°F 194636%1%
Apr 2865°F42°F90°F 197025°F 201936%1%
Apr 2965°F42°F91°F 195224°F 195836%1%
Apr 3065°F43°F90°F 195226°F 200536%1%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Keystone, 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 6:51 AM, sunset 7:35 PM
April 30
sunrise 6:06 AM, sunset 8:07 PM

Every day of April: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00130600 (Belle Plaine), public domain. Records: NOAA GHCN-Daily, station USC00138568, 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.