Casa Grande weather in May: Casa Grande, Arizona: normal highs, lows, rain and records for May
Casa Grande in May has a normal high of 96°F and a normal low of 60°F, a daily mean of 78°F, rising from 91°F on the 1st to 102°F by the 31st. Measurable precipitation falls on 1 days in a normal May, 0.18 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 36°C and low of 16°C, 5 mm of precipitation in May.
- NOAA stationCasa Grande
- Station IDUSC00021306
- Location32.89°N 111.71°W
- Elevation1,400 ft (427 m)
- From the center3 miles
- Population68,927
- Jan 69° 39°
- Feb 73° 42°
- Mar 80° 47°
- Apr 88° 53°
- May 96° 60°
- Jun 106° 70°
- Jul 107° 78°
- Aug 105° 77°
- Sep 100° 71°
- Oct 91° 57°
- Nov 78° 45°
- Dec 68° 38°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Casa Grande in May?
The normal high is 96°F and the normal low 60°F, for a daily mean of 78.4°F. May is 8.1°F warmer than April and 9.5°F cooler than June. May is the 5th warmest month of the year in Casa Grande and the 11th wettest. Across the month the normal high rises 11°F, from 91°F on May 1 to 102°F on May 31. From one year to the next May's mean temperature typically moves about 3.0°F either way (NOAA's standard deviation), so roughly two Mays in three average between 75°F and 81°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 5%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 91°F | 57°F | 3% | 1% |
| May 8 | 94°F | 58°F | 3% | 1% |
| May 15 | 96°F | 60°F | 4% | 1% |
| May 22 | 99°F | 62°F | 4% | 2% |
| May 31 | 102°F | 64°F | 4% | 2% |
Every day of May: normal high, low and chance of precipitation (warmest afternoon May 31, coldest night May 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| May 1 | 91°F | 57°F | 3% | 1% | 13 h 30 min |
| May 2 | 92°F | 57°F | 3% | 1% | 13 h 30 min |
| May 3 | 92°F | 57°F | 3% | 1% | 13 h 30 min |
| May 4 | 92°F | 57°F | 3% | 1% | 13 h 30 min |
| May 5 | 93°F | 58°F | 3% | 1% | 13 h 30 min |
| May 6 | 93°F | 58°F | 3% | 1% | 13 h 40 min |
| May 7 | 93°F | 58°F | 3% | 1% | 13 h 40 min |
| May 8 | 94°F | 58°F | 3% | 1% | 13 h 40 min |
| May 9 | 94°F | 59°F | 3% | 1% | 13 h 40 min |
| May 10 | 94°F | 59°F | 3% | 1% | 13 h 40 min |
| May 11 | 95°F | 59°F | 3% | 1% | 13 h 40 min |
| May 12 | 95°F | 59°F | 4% | 1% | 13 h 50 min |
| May 13 | 95°F | 60°F | 4% | 1% | 13 h 50 min |
| May 14 | 96°F | 60°F | 4% | 1% | 13 h 50 min |
| May 15 | 96°F | 60°F | 4% | 1% | 13 h 50 min |
| May 16 | 96°F | 60°F | 4% | 2% | 13 h 50 min |
| May 17 | 97°F | 61°F | 4% | 2% | 13 h 50 min |
| May 18 | 97°F | 61°F | 4% | 2% | 13 h 50 min |
| May 19 | 97°F | 61°F | 4% | 2% | 14 h |
| May 20 | 98°F | 61°F | 4% | 2% | 14 h |
| May 21 | 98°F | 62°F | 4% | 2% | 14 h |
| May 22 | 99°F | 62°F | 4% | 2% | 14 h |
| May 23 | 99°F | 62°F | 5% | 2% | 14 h |
| May 24 | 99°F | 62°F | 4% | 2% | 14 h |
| May 25 | 100°F | 63°F | 4% | 2% | 14 h |
| May 26 | 100°F | 63°F | 4% | 2% | 14 h |
| May 27 | 100°F | 63°F | 4% | 2% | 14 h |
| May 28 | 101°F | 64°F | 4% | 2% | 14 h 10 min |
| May 29 | 101°F | 64°F | 4% | 2% | 14 h 10 min |
| May 30 | 102°F | 64°F | 4% | 2% | 14 h 10 min |
| May 31 | 102°F | 64°F | 4% | 2% | 14 h 10 min |
- Normal high
- 96°FMay average
- Normal low
- 60°FMay average
- Precipitation
- 0.18 inmonth total
- Days with precipitation
- 10.01 inch or more
- Days at 90°F or more
- 26
- Daylight
- 13 h 30 min to 14 h 10 minMay 1 to May 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 31
- Sunshine
- 95%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00021306; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Casa Grande in May?
On a given May day the chance of 0.01 inch or more is 4% on average, highest around May 23 (5%). In all, 0.18 in falls on 1 days of a normal May.
In a normal May in Casa Grande, 26 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00021306.
What are the records for May in Casa Grande?
The warmest May temperature on this station's record (since 1903) is 120°F, on May 31, 1910; the coldest is 36°F, on May 8, 1975. The wettest May brought 1.49 in (1992).
The May mean against the 1991-2020 normal of 78.4°F: 2021 79.1°F (+0.7), 2022 80.0°F (+1.6), 2023 78.7°F (+0.3), 2024 78.3°F (−0.1). 3 of 4 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 79.1°F | +0.7°F | 0.00 in |
| 2022 | 80.0°F | +1.6°F | 0.00 in |
| 2023 | 78.7°F | +0.3°F | 0.03 in |
| 2024 | 78.3°F | −0.1°F | 0.01 in |
Source: records: ACIS, station USC00021306; recent months: ACIS, station USC00021306. Records and recent months use complete months only.
How does May in Casa Grande compare across Arizona?
Across the 97 places PlainClimate covers in Arizona, May normal highs run from 66°F in Greer to 98°F in Gila Bend; Casa Grande's is 96°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.