Mesa, AZ weather in May
Expect hot, dry weather in Mesa in May, with highs near 95°F and lows near 70°F. Rain falls on about 1 day. Plan outdoor time for mornings and evenings.
- Normal high
- 95°F
- Normal low
- 70°F
- Wet days
- 1
- 0.1 in total
- Muggy days
- 0
- dew point 65°F+
How May changes from start to finish
| May 1 | May 31 | |
|---|---|---|
| Normal high | 89°F | 100°F |
| Normal low | 65°F | 74°F |
| Chance of a wet day | 3% | 2% |
| Sunrise / sunset | 5:38 am / 7:09 pm | 5:18 am / 7:31 pm |
| Daylight | 13.5 h | 14.2 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Arizona time (no daylight saving)).
A typical May day
- 6 am70°Fdew point 37°F
- 9 am79°Fdew point 36°F
- Noon88°Fdew point 33°F
- 3 pm93°Fdew point 31°F
- 6 pm92°Fdew point 31°F
- 9 pm86°Fdew point 32°F
NOAA hourly normals (local standard time) from Phoenix Sky Harbor Intl Airport (11 mi away); average wind 7 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F2 of 31
- Hot dayshigh 90°F or more24 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow1 of 31
- Notable rainat least 0.10 in0 of 31
- Freezing nightslow 32°F or below0 of 31
Average days per May, counted from daily records for each year 1991-2020.
Rain in May
Normal precipitation is 0.1 in; a dry May brings about 0.0 in and a wet one about 0.1 in (25th and 75th percentiles). Days with half an inch or more are rare.
How May varies from year to year
- Warmest May, 1991-20202001: average high 100°F
- Coolest May2019: average high 88°F
- Wettest May2015: 1.4 in
- Driest May1991: no measurable precipitation
- Highest reading112°F (May 29, 2020)
- Lowest reading50°F (May 7, 1995)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
May compared with April and June
| April | May | June | |
|---|---|---|---|
| Normal high | 86°F | 95°F | 104°F |
| Normal low | 61°F | 70°F | 79°F |
| Wet days | 1 | 1 | 0 |
| Comfortable days | 7 | 2 | 0 |
| Daylight | 13.0 h | 13.9 h | 14.3 h |
Highs change by +9°F from April and +9°F into June.
Nearby alternatives in May
- Cooler: Sedona, AZ100 mi · high 84°F · 3 wet days
How Mesa ranks in May
- Normal high6th warmest of 378 cities; 3rd of 13 in Arizona
- Wet days5th driest of 378
- Comfortable days302nd most of 339
What to pack for Mesa in May
- Light, breathable clothing – highs near 95°F
- Layers – afternoons near 95°F but nights near 70°F
Heating and cooling
May has 1 heating degree days and 528 cooling degree days (base 65°F), 9% of the year's total heating and cooling demand.
Questions
How hot is Mesa in May?
The normal high is 95°F and the normal low is 70°F. From 1991 to 2020 the hottest May reading was 112°F (May 29, 2020).
Does it rain a lot in Mesa in May?
About 1 days in May have at least 0.01 in of precipitation, and the normal total is 0.2 in. The wettest May in 1991-2020 was in 2015 (1.4 in); the driest was in 1991, with no measurable precipitation.
Is May a good time to visit Mesa?
May ranks 8th of 12 months on our comfort score for Mesa (44 out of 100). It has about 2 comfortable days and about 24 days at 90°F or hotter. The best months are January and February.
Where the numbers come from
- Temperature, frost dates and humidity and wind by hour: Phoenix Sky Harbor Intl Airport (USW00023183), 11 mi W of the city center, 1,107 ft (135 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Rain: Mesa (USC00025467), 0.8 mi SSE of the city center, 1,235 ft . NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Tempe ASU (USC00028499), 5.7 mi W of the city center, 1,167 ft (75 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Phoenix Sky Harbor Intl Airport (722780-23183), 11 mi W of the city center, 1,113 ft (129 ft lower than the city). Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).