Climate averages 1991–2020
Oklahoma City weather
in May.
A warm, wet month: the 5th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a warm month in Oklahoma City: daytime highs average 26.1°C and nights cool to about 16.2°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 115 mm of rain on roughly 11 days, which makes May a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 14 h 01 min on an average May day.
The nearest other city in this atlas is Edmond (21 km away). In May its highs average 26.2°C, about as warm as Oklahoma City, with 112 mm of rain.
Among the 498 cities listed in the United States, Oklahoma City ranks joint 156th of 498 for the warmest May highs and joint 426th of 498 for the driest May (rainfall, lowest first). The mean May high of those 498 cities is 23.8°C; Oklahoma City is 2.3°C warmer than that mean.
From May to June, average highs rise by 4.7°C to 30.7°C, and monthly rainfall falls from 115 mm to 95 mm.
The annual picture
May in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Oklahoma City climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.0°C-0.8°C | -0.8°C | 37 | 4.6 | 10.110 h |
| February | 11.7°C1.1°C | 1.1°C | 45 | 5.5 | 10.911 h |
| March | 16.7°C5.9°C | 5.9°C | 72 | 7.6 | 11.912 h |
| April | 21.6°C10.7°C | 10.7°C | 98 | 8.6 | 13.113 h |
| May, selected | 26.1°C16.2°C | 16.2°C | 115 | 11.0 | 14.014 h |
| June | 30.7°C21.3°C | 21.3°C | 95 | 9.6 | 14.515 h |
| July | 33.6°C23.9°C | 23.9°C | 61 | 6.8 | 14.314 h |
| August | 33.1°C23.4°C | 23.4°C | 64 | 6.7 | 13.513 h |
| September | 28.5°C18.9°C | 18.9°C | 73 | 6.9 | 12.412 h |
| October | 22.3°C12.5°C | 12.5°C | 75 | 7.2 | 11.311 h |
| November | 15.3°C5.9°C | 5.9°C | 49 | 5.6 | 10.310 h |
| December | 9.7°C0.6°C | 0.6°C | 46 | 5.1 | 9.810 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Edmond in MayUnited States · 21 kmHigh 26.2°C · Low 16.2°C · 112 mm rain
- Norman in MayUnited States · 28 kmHigh 26.1°C · Low 16.6°C · 113 mm rain
- Lawton in MayUnited States · 124 kmHigh 27.3°C · Low 16.9°C · 113 mm rain
- Tulsa in MayUnited States · 157 kmHigh 25.6°C · Low 16.4°C · 148 mm rain
- Broken Arrow in MayUnited States · 169 kmHigh 25.4°C · Low 16.4°C · 150 mm rain
- Wichita Falls in MayUnited States · 194 kmHigh 28.5°C · Low 17.9°C · 107 mm rain
- Wichita in MayUnited States · 248 kmHigh 24.5°C · Low 14.5°C · 142 mm rain
- Denton in MayUnited States · 253 kmHigh 27.3°C · Low 18.3°C · 132 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Oklahoma City) is explained once on the Oklahoma City year overview and on the Sources, method and limits page.