Cedarburg climate

Cedarburg Weather in May

NOAA 1991-2020 normals for Grafton Wwtp, 2.9 km from Cedarburg

Average highs run from 60°F on May 1 to 71°F on May 31, and lows from 41°F to 51°F. Normal precipitation for the month is 3.99 in.

May day by day

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

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

May at a glance

Average high
66°F
Average low
46°F
Precipitation
3.99 in
Snowfall
0.3 in
Record high
93°FMay 28, 2018
Record low
25°FMay 9, 2020
Chance of a freeze
27%
Daylight
14 h 09 min to 15 h 10 min
Cloud cover
76%
Humidity
77%
Dew point
47°F
Wind
11.2 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 160°F41°F86°F 201331°F 20202%
May 260°F41°F87°F 202128°F 20261%
May 361°F42°F85°F 202130°F 20171%
May 461°F42°F79°F 201231°F 20111%
May 562°F42°F79°F 202631°F 20221%
May 662°F43°F76°F 201832°F 20201%
May 762°F43°F84°F 201630°F 20261%
May 863°F43°F83°F 201528°F 20171%
May 963°F44°F81°F 201825°F 20201%
May 1064°F44°F73°F 202232°F 20261%
May 1164°F45°F87°F 202231°F 20211%
May 1264°F45°F84°F 202230°F 20200%
May 1365°F45°F92°F 202228°F 20130%
May 1465°F46°F90°F 202233°F 20150%
May 1565°F46°F85°F 202230°F 20160%
May 1666°F46°F83°F 201235°F 20150%
May 1766°F47°F85°F 201734°F 20110%
May 1867°F47°F81°F 201535°F 20160%
May 1967°F47°F86°F 202438°F 20170%
May 2067°F48°F88°F 201234°F 20150%
May 2168°F48°F89°F 201239°F 20190%
May 2268°F48°F83°F 201436°F 20150%
May 2368°F49°F86°F 201136°F 20150%
May 2469°F49°F83°F 202333°F 20130%
May 2569°F49°F86°F 201637°F 20250%
May 2669°F50°F87°F 202035°F 20230%
May 2770°F50°F89°F 201836°F 20110%
May 2870°F50°F93°F 201839°F 20210%
May 2971°F51°F92°F 201835°F 20210%
May 3071°F51°F87°F 201835°F 20210%
May 3171°F51°F90°F 201136°F 20090%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Cedarburg, in percent, and of at least 0.1 inch of snowfall.00.511.51102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

May 1
sunrise 5:45 AM, sunset 7:54 PM
May 31
sunrise 5:15 AM, sunset 8:25 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00473198 (Grafton Wwtp), public domain. Records: NOAA GHCN-Daily, station USC00479052, 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.