Tucson weather in May: Tucson, Arizona: normal highs, lows, rain and records for May
Tucson in May has a normal high of 92°F and a normal low of 62°F, a daily mean of 77°F, rising from 86°F on the 1st to 98°F by the 31st. Measurable precipitation falls on 1 days in a normal May, 0.20 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 33°C and low of 17°C, 5 mm of precipitation in May.
- NOAA stationTucson International Airport
- Station IDUSW00023160
- Location32.13°N 110.96°W
- Elevation2,549 ft (777 m)
- From the center5 miles
- Population554,013
- Jan 67° 41°
- Feb 69° 43°
- Mar 76° 48°
- Apr 83° 53°
- May 92° 62°
- Jun 101° 71°
- Jul 100° 76°
- Aug 99° 75°
- Sep 95° 70°
- Oct 86° 59°
- Nov 75° 48°
- Dec 66° 41°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Tucson in May?
The normal high is 92°F and the normal low 62°F, for a daily mean of 76.8°F. May is 8.7°F warmer than April and 9.3°F cooler than June. May is the 5th warmest month of the year in Tucson and the 12th wettest. Across the month the normal high rises 12°F, from 86°F on May 1 to 98°F on May 31. From one year to the next May's mean temperature typically moves about 2.8°F either way (NOAA's standard deviation), so roughly two Mays in three average between 74°F and 80°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 4%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 86°F | 57°F | 4% | 2% |
| May 8 | 89°F | 59°F | 4% | 2% |
| May 15 | 91°F | 62°F | 4% | 2% |
| May 22 | 94°F | 64°F | 4% | 2% |
| May 31 | 98°F | 66°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 | 86°F | 57°F | 4% | 2% | 13 h 20 min |
| May 2 | 87°F | 58°F | 4% | 2% | 13 h 30 min |
| May 3 | 87°F | 58°F | 4% | 2% | 13 h 30 min |
| May 4 | 87°F | 58°F | 4% | 2% | 13 h 30 min |
| May 5 | 88°F | 58°F | 4% | 2% | 13 h 30 min |
| May 6 | 88°F | 59°F | 4% | 2% | 13 h 30 min |
| May 7 | 88°F | 59°F | 4% | 2% | 13 h 30 min |
| May 8 | 89°F | 59°F | 4% | 2% | 13 h 40 min |
| May 9 | 89°F | 60°F | 4% | 2% | 13 h 40 min |
| May 10 | 89°F | 60°F | 4% | 2% | 13 h 40 min |
| May 11 | 90°F | 60°F | 4% | 2% | 13 h 40 min |
| May 12 | 90°F | 61°F | 4% | 2% | 13 h 40 min |
| May 13 | 91°F | 61°F | 4% | 2% | 13 h 40 min |
| May 14 | 91°F | 61°F | 4% | 2% | 13 h 50 min |
| May 15 | 91°F | 62°F | 4% | 2% | 13 h 50 min |
| May 16 | 92°F | 62°F | 4% | 2% | 13 h 50 min |
| May 17 | 92°F | 62°F | 4% | 2% | 13 h 50 min |
| May 18 | 93°F | 62°F | 4% | 2% | 13 h 50 min |
| May 19 | 93°F | 63°F | 4% | 2% | 13 h 50 min |
| May 20 | 93°F | 63°F | 4% | 2% | 13 h 50 min |
| May 21 | 94°F | 63°F | 4% | 2% | 13 h 50 min |
| May 22 | 94°F | 64°F | 4% | 2% | 14 h |
| May 23 | 95°F | 64°F | 4% | 2% | 14 h |
| May 24 | 95°F | 64°F | 4% | 2% | 14 h |
| May 25 | 95°F | 65°F | 4% | 2% | 14 h |
| May 26 | 96°F | 65°F | 4% | 2% | 14 h |
| May 27 | 96°F | 65°F | 4% | 2% | 14 h |
| May 28 | 97°F | 66°F | 4% | 2% | 14 h |
| May 29 | 97°F | 66°F | 4% | 2% | 14 h |
| May 30 | 97°F | 66°F | 4% | 2% | 14 h |
| May 31 | 98°F | 66°F | 4% | 2% | 14 h 10 min |
- Normal high
- 92°FMay average
- Normal low
- 62°FMay average
- Precipitation
- 0.20 inmonth total
- Days with precipitation
- 10.01 inch or more
- Days at 90°F or more
- 22
- Daylight
- 13 h 20 min to 14 h 10 minMay 1 to May 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 29
- Sunshine
- 94%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00023160; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Tucson in May?
On a given May day the chance of 0.01 inch or more is 4% on average, highest around May 16 (4%). In all, 0.20 in falls on 1 days of a normal May.
In a normal May in Tucson, 22 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00023160.
How humid and windy is Tucson in May?
At 3 p.m. the normal temperature is 95°F with 9% relative humidity and a dew point of 28°F; at 6 a.m. it is 67°F with 28% humidity. The wind averages 7.7 mph, most often from the west in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 67°F | 32°F | 28% | 6.8 mph | 93% |
| 9 a.m. | 82°F | 34°F | 18% | 4.8 mph | 95% |
| noon | 91°F | 30°F | 11% | 7.8 mph | 92% |
| 3 p.m. | 95°F | 28°F | 9% | 10.6 mph | 91% |
| 6 p.m. | 93°F | 28°F | 10% | 11.9 mph | 91% |
| 9 p.m. | 84°F | 30°F | 14% | 7.8 mph | 93% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00023160. 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 Tucson?
The warmest May temperature on Tucson's official record (since 1894) is 111°F, on May 29, 1910; the coldest is 32°F, on May 3, 1899. The wettest May brought 1.34 in (1931).
The May mean against the 1991-2020 normal of 76.8°F: 2021 78.3°F (+1.5), 2022 79.5°F (+2.7), 2023 77.3°F (+0.5), 2024 77.2°F (+0.4), 2025 77.5°F (+0.7), 2026 77.2°F (+0.4). 6 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 78.3°F | +1.5°F | 0.00 in |
| 2022 | 79.5°F | +2.7°F | 0.00 in |
| 2023 | 77.3°F | +0.5°F | 0.53 in |
| 2024 | 77.2°F | +0.4°F | 0.00 in |
| 2025 | 77.5°F | +0.7°F | 0.03 in |
| 2026 | 77.2°F | +0.4°F | 0.40 in |
Source: records: ACIS, NWS threaded record TUSthr; recent months: ACIS, station USW00023160. Records and recent months use complete months only.
How does May in Tucson 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; Tucson's is 92°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.