Dunkerton climate

Dunkerton Weather in May

NOAA 1991-2020 normals for Waterloo Muni AP, 19.8 km from Dunkerton

Average highs run from 67°F on May 1 to 78°F on May 31, and lows from 44°F to 56°F. Normal precipitation for the month is 4.61 in over about 13 wet days.

May day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Dunkerton, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
73°F
Average low
50°F
Precipitation
4.61 in
Snowfall
0.1 in
Record high
96°FMay 13, 2022
Record low
30°FMay 2, 2011
Chance of a freeze
36%
Days of 90°F or more
0.8
Daylight
14 h 06 min to 15 h 05 min
Cloud cover
66%
Humidity
76%
Dew point
51°F
Wind
11.0 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
May 167°F44°F89°F 200733°F 201440%2%
May 268°F44°F83°F 202130°F 201140%1%
May 368°F45°F87°F 202130°F 201140%1%
May 468°F45°F82°F 201231°F 201341%1%
May 569°F46°F83°F 201034°F 200841%1%
May 669°F46°F83°F 201233°F 200641%1%
May 769°F47°F88°F 201633°F 200641%1%
May 870°F47°F83°F 201434°F 202641%1%
May 970°F47°F83°F 201831°F 202041%1%
May 1071°F48°F89°F 202231°F 202041%1%
May 1171°F48°F91°F 201136°F 202641%1%
May 1271°F49°F94°F 202230°F 201341%0%
May 1372°F49°F96°F 202232°F 201341%0%
May 1472°F49°F86°F 202234°F 201641%0%
May 1573°F50°F95°F 201330°F 201641%0%
May 1673°F50°F89°F 201232°F 201641%0%
May 1773°F51°F90°F 201734°F 201441%0%
May 1874°F51°F85°F 201838°F 201441%0%
May 1974°F52°F89°F 202437°F 201541%0%
May 2074°F52°F91°F 202238°F 201541%0%
May 2175°F52°F86°F 201437°F 201541%0%
May 2275°F53°F84°F 200740°F 201742%0%
May 2376°F53°F84°F 201642°F 202242%0%
May 2476°F54°F90°F 201042°F 201342%0%
May 2576°F54°F92°F 201040°F 202342%0%
May 2677°F54°F88°F 201841°F 202342%0%
May 2777°F55°F91°F 201842°F 202142%0%
May 2877°F55°F96°F 201840°F 202142%0%
May 2978°F56°F95°F 201838°F 202142%0%
May 3078°F56°F94°F 200638°F 202142%0%
May 3178°F56°F92°F 202242°F 201542%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Dunkerton, 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).

May 1
sunrise 6:03 AM, sunset 8:09 PM
May 31
sunrise 5:34 AM, sunset 8:39 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00094910 (Waterloo Muni AP), public domain. Records: NOAA GHCN-Daily, station USC00136199, 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.