Casa Grande climate

Casa Grande Weather in May

NOAA 1991-2020 normals for Casa Grande, 4 km from Casa Grande

Average highs run from 91°F on May 1 to 102°F on May 31, and lows from 57°F to 64°F. Normal precipitation for the month is 0.18 in over about 1 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 Casa Grande, in °F, with the record for each date.20406080100120140151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
96°F
Average low
60°F
Precipitation
0.18 in
Record high
120°FMay 30, 1910
Record low
36°FMay 7, 1975
Chance of a freeze
0%
Days of 90°F or more
26.3
Daylight
13 h 29 min to 14 h 10 min
Cloud cover
25%
Humidity
23%
Dew point
33°F
Wind
7.4 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation.

DateNormal highNormal lowRecord highRecord lowChance wet
May 191°F57°F103°F 194340°F 19423%
May 292°F57°F105°F 194338°F 19543%
May 392°F57°F110°F 194739°F 19553%
May 492°F57°F113°F 194740°F 19303%
May 593°F58°F110°F 194740°F 19053%
May 693°F58°F110°F 194739°F 19333%
May 793°F58°F109°F 194736°F 19753%
May 894°F58°F109°F 194736°F 19753%
May 994°F59°F107°F 191041°F 19053%
May 1094°F59°F109°F 193442°F 19053%
May 1195°F59°F112°F 193440°F 19223%
May 1295°F59°F110°F 193442°F 19224%
May 1395°F60°F110°F 197843°F 19424%
May 1496°F60°F110°F 193644°F 19334%
May 1596°F60°F110°F 192746°F 19424%
May 1696°F60°F110°F 193740°F 19554%
May 1797°F61°F111°F 195642°F 19824%
May 1897°F61°F109°F 194840°F 19774%
May 1997°F61°F113°F 197041°F 19774%
May 2098°F61°F110°F 200844°F 19214%
May 2198°F62°F111°F 200544°F 19744%
May 2299°F62°F111°F 200543°F 19754%
May 2399°F62°F110°F 198439°F 19715%
May 2499°F62°F111°F 198447°F 19124%
May 25100°F63°F110°F 193645°F 19754%
May 26100°F63°F110°F 195149°F 19264%
May 27100°F63°F115°F 195144°F 19294%
May 28101°F64°F113°F 195143°F 19294%
May 29101°F64°F112°F 195848°F 19534%
May 30102°F64°F120°F 191048°F 19454%
May 31102°F64°F120°F 191048°F 19304%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Casa Grande, in percent.0123451102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (MST).

May 1
sunrise 5:40 AM, sunset 7:09 PM
May 31
sunrise 5:20 AM, sunset 7:30 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00021306 (Casa Grande), public domain. Records: NOAA GHCN-Daily, station USC00021306, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.