Phoenix weather in May: Phoenix, Arizona: normal highs, lows, rain and records for May
Phoenix in May has a normal high of 95°F and a normal low of 70°F, a daily mean of 82°F, rising from 89°F on the 1st to 100°F by the 31st. Measurable precipitation falls on 1 days in a normal May, 0.13 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 35°C and low of 21°C, 3 mm of precipitation in May.
- NOAA stationPhoenix Sky Harbor International Airport
- Station IDUSW00023183
- Location33.43°N 112.00°W
- Elevation1,107 ft (337 m)
- From the center11 miles
- Population1,673,164
- Jan 68° 46°
- Feb 71° 49°
- Mar 78° 55°
- Apr 86° 61°
- May 95° 70°
- Jun 104° 79°
- Jul 107° 85°
- Aug 105° 84°
- Sep 100° 78°
- Oct 89° 66°
- Nov 77° 54°
- Dec 66° 45°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Phoenix in May?
The normal high is 95°F and the normal low 70°F, for a daily mean of 82.0°F. May is 8.8°F warmer than April and 9.4°F cooler than June. May is the 5th warmest month of the year in Phoenix and the 11th wettest. Across the month the normal high rises 11°F, from 89°F on May 1 to 100°F on May 31. From one year to the next May's mean temperature typically moves about 3.1°F either way (NOAA's standard deviation), so roughly two Mays in three average between 79°F and 85°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 3%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 89°F | 65°F | 3% | 1% |
| May 8 | 92°F | 67°F | 3% | 1% |
| May 15 | 94°F | 69°F | 3% | 1% |
| May 22 | 97°F | 71°F | 3% | 1% |
| May 31 | 100°F | 74°F | 2% | 1% |
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 | 89°F | 65°F | 3% | 1% | 13 h 30 min |
| May 2 | 90°F | 65°F | 3% | 1% | 13 h 30 min |
| May 3 | 90°F | 66°F | 3% | 1% | 13 h 30 min |
| May 4 | 90°F | 66°F | 3% | 1% | 13 h 30 min |
| May 5 | 91°F | 66°F | 3% | 1% | 13 h 40 min |
| May 6 | 91°F | 67°F | 3% | 1% | 13 h 40 min |
| May 7 | 91°F | 67°F | 3% | 1% | 13 h 40 min |
| May 8 | 92°F | 67°F | 3% | 1% | 13 h 40 min |
| May 9 | 92°F | 67°F | 3% | 1% | 13 h 40 min |
| May 10 | 92°F | 68°F | 3% | 1% | 13 h 40 min |
| May 11 | 93°F | 68°F | 3% | 1% | 13 h 50 min |
| May 12 | 93°F | 68°F | 3% | 1% | 13 h 50 min |
| May 13 | 93°F | 69°F | 3% | 1% | 13 h 50 min |
| May 14 | 94°F | 69°F | 3% | 1% | 13 h 50 min |
| May 15 | 94°F | 69°F | 3% | 1% | 13 h 50 min |
| May 16 | 94°F | 70°F | 3% | 1% | 13 h 50 min |
| May 17 | 95°F | 70°F | 3% | 1% | 13 h 50 min |
| May 18 | 95°F | 70°F | 3% | 1% | 14 h |
| May 19 | 96°F | 70°F | 3% | 1% | 14 h |
| May 20 | 96°F | 71°F | 3% | 1% | 14 h |
| May 21 | 96°F | 71°F | 3% | 1% | 14 h |
| May 22 | 97°F | 71°F | 3% | 1% | 14 h |
| May 23 | 97°F | 72°F | 3% | 1% | 14 h |
| May 24 | 98°F | 72°F | 3% | 1% | 14 h |
| May 25 | 98°F | 72°F | 3% | 1% | 14 h 10 min |
| May 26 | 98°F | 73°F | 3% | 1% | 14 h 10 min |
| May 27 | 99°F | 73°F | 3% | 1% | 14 h 10 min |
| May 28 | 99°F | 73°F | 3% | 1% | 14 h 10 min |
| May 29 | 99°F | 73°F | 3% | 1% | 14 h 10 min |
| May 30 | 100°F | 74°F | 2% | 1% | 14 h 10 min |
| May 31 | 100°F | 74°F | 2% | 1% | 14 h 10 min |
- Normal high
- 95°FMay average
- Normal low
- 70°FMay average
- Precipitation
- 0.13 inmonth total
- Days with precipitation
- 10.01 inch or more
- Days at 90°F or more
- 24
- 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
- 30
- Sunshine
- 96%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00023183; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Phoenix in May?
On a given May day the chance of 0.01 inch or more is 3% on average, highest around May 1 (3%). In all, 0.13 in falls on 1 days of a normal May.
In a normal May in Phoenix, 24 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00023183.
How humid and windy is Phoenix in May?
At 3 p.m. the normal temperature is 97°F with 10% relative humidity and a dew point of 32°F; at 6 a.m. it is 74°F with 27% humidity. The wind averages 6.9 mph, most often from the west-southwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 74°F | 39°F | 27% | 5.8 mph | 69% |
| 9 a.m. | 84°F | 37°F | 19% | 5.7 mph | 76% |
| noon | 93°F | 34°F | 13% | 5.8 mph | 68% |
| 3 p.m. | 97°F | 32°F | 10% | 8.6 mph | 66% |
| 6 p.m. | 97°F | 31°F | 10% | 10.5 mph | 66% |
| 9 p.m. | 91°F | 33°F | 13% | 7.8 mph | 73% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00023183. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for May in Phoenix?
The warmest May temperature on Phoenix's official record (since 1895) is 114°F, on May 30, 1910; the coldest is 39°F, on May 3, 1899. The wettest May brought 1.31 in (1930).
The May mean against the 1991-2020 normal of 82.0°F: 2021 83.1°F (+1.1), 2022 84.1°F (+2.1), 2023 83.3°F (+1.3), 2024 83.8°F (+1.8), 2025 83.4°F (+1.4), 2026 84.1°F (+2.1). 6 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 83.1°F | +1.1°F | 0.00 in |
| 2022 | 84.1°F | +2.1°F | 0.00 in |
| 2023 | 83.3°F | +1.3°F | 0.00 in |
| 2024 | 83.8°F | +1.8°F | 0.01 in |
| 2025 | 83.4°F | +1.4°F | 0.00 in |
| 2026 | 84.1°F | +2.1°F | 0.00 in |
Source: records: ACIS, NWS threaded record PHXthr; recent months: ACIS, station USW00023183. Records and recent months use complete months only.
How does May in Phoenix 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; Phoenix's is 95°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.