Norman weather in May: Norman, Oklahoma: normal highs, lows, rain and records for May
Norman in May has a normal high of 79°F and a normal low of 58°F, a daily mean of 69°F, rising from 75°F on the 1st to 83°F by the 31st. Measurable precipitation falls on 10 days in a normal May, 5.14 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 26°C and low of 15°C, 131 mm of precipitation in May.
- NOAA stationNorman (3 mi SSE)
- Station IDUSC00346386
- Location35.18°N 97.44°W
- Elevation1,128 ft (344 m)
- Population131,010
- Jan 50° 28°
- Feb 54° 31°
- Mar 63° 40°
- Apr 71° 48°
- May 79° 58°
- Jun 87° 67°
- Jul 93° 71°
- Aug 92° 70°
- Sep 84° 62°
- Oct 74° 50°
- Nov 62° 39°
- Dec 52° 31°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Norman in May?
The normal high is 79°F and the normal low 58°F, for a daily mean of 68.6°F. May is 8.8°F warmer than April and 8.7°F cooler than June. May is the 5th warmest month of the year in Norman and the wettest. Across the month the normal high rises 8°F, from 75°F on May 1 to 83°F on May 31. From one year to the next May's mean temperature typically moves about 2.6°F either way (NOAA's standard deviation), so roughly two Mays in three average between 66°F and 71°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 35%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 75°F | 53°F | 31% | 20% |
| May 8 | 77°F | 56°F | 33% | 22% |
| May 15 | 78°F | 58°F | 34% | 23% |
| May 22 | 81°F | 61°F | 35% | 23% |
| May 31 | 83°F | 64°F | 34% | 23% |
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 | 75°F | 53°F | 31% | 20% | 13 h 30 min |
| May 2 | 75°F | 53°F | 31% | 21% | 13 h 40 min |
| May 3 | 75°F | 54°F | 31% | 21% | 13 h 40 min |
| May 4 | 76°F | 54°F | 32% | 21% | 13 h 40 min |
| May 5 | 76°F | 55°F | 32% | 21% | 13 h 40 min |
| May 6 | 76°F | 55°F | 32% | 21% | 13 h 40 min |
| May 7 | 76°F | 55°F | 32% | 22% | 13 h 50 min |
| May 8 | 77°F | 56°F | 33% | 22% | 13 h 50 min |
| May 9 | 77°F | 56°F | 33% | 22% | 13 h 50 min |
| May 10 | 77°F | 56°F | 33% | 22% | 13 h 50 min |
| May 11 | 77°F | 57°F | 33% | 22% | 13 h 50 min |
| May 12 | 78°F | 57°F | 33% | 22% | 13 h 50 min |
| May 13 | 78°F | 57°F | 33% | 22% | 14 h |
| May 14 | 78°F | 58°F | 34% | 23% | 14 h |
| May 15 | 78°F | 58°F | 34% | 23% | 14 h |
| May 16 | 79°F | 59°F | 34% | 23% | 14 h |
| May 17 | 79°F | 59°F | 34% | 23% | 14 h |
| May 18 | 79°F | 59°F | 34% | 23% | 14 h |
| May 19 | 80°F | 60°F | 34% | 23% | 14 h 10 min |
| May 20 | 80°F | 60°F | 34% | 23% | 14 h 10 min |
| May 21 | 80°F | 60°F | 34% | 23% | 14 h 10 min |
| May 22 | 81°F | 61°F | 35% | 23% | 14 h 10 min |
| May 23 | 81°F | 61°F | 35% | 23% | 14 h 10 min |
| May 24 | 81°F | 61°F | 35% | 23% | 14 h 10 min |
| May 25 | 81°F | 62°F | 35% | 23% | 14 h 10 min |
| May 26 | 82°F | 62°F | 35% | 23% | 14 h 10 min |
| May 27 | 82°F | 62°F | 35% | 23% | 14 h 20 min |
| May 28 | 82°F | 63°F | 35% | 23% | 14 h 20 min |
| May 29 | 83°F | 63°F | 34% | 23% | 14 h 20 min |
| May 30 | 83°F | 63°F | 34% | 23% | 14 h 20 min |
| May 31 | 83°F | 64°F | 34% | 23% | 14 h 20 min |
- Normal high
- 79°FMay average
- Normal low
- 58°FMay average
- Precipitation
- 5.14 inmonth total
- Days with precipitation
- 100.01 inch or more
- Days at 90°F or more
- 3
- Daylight
- 13 h 30 min to 14 h 20 minMay 1 to May 31
- Days at 70°F or more
- 27
- Days at 80°F or more
- 17
- Sunshine
- 75%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00346386; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Norman in May?
On a given May day the chance of 0.01 inch or more is 33% on average, highest around May 24 (35%). In all, 5.14 in falls on 10 days of a normal May, 2 of them with an inch or more.
In a normal May in Norman, 3 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00346386.
What are the records for May in Norman?
The warmest May temperature on this station's record (since 1894) is 102°F, on May 30, 2003; the coldest is 33°F, on May 1, 1909. The wettest May brought 23.10 in (2015).
The May mean against the 1991-2020 normal of 68.6°F: 2024 71.2°F (+2.6), 2025 67.7°F (−0.9), 2026 68.8°F (+0.2). 2 of 3 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2024 | 71.2°F | +2.6°F | 4.58 in |
| 2025 | 67.7°F | −0.9°F | 7.89 in |
| 2026 | 68.8°F | +0.2°F | 3.87 in |
Source: records: ACIS, station USC00346386; recent months: ACIS, station USC00346386. Records and recent months use complete months only.
How does May in Norman compare across Oklahoma?
Across the 134 places PlainClimate covers in Oklahoma, May normal highs run from 77°F in Stilwell to 84°F in Altus; Norman's is 79°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.