Average Rainfall for Oklahoma in May
The tables below give monthly averages for rainfall during May at cities, communities and other locations around Oklahoma.
Each place has a total for the amount of precipitation it usually receives this month. There is also a count of the number of days with wet weather, when precipitation amounts to 0.01 inches (0.25 millimetres) or more.
The rainfall totals are averages based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information.
You can jump to a separate table for each region of the state: Eastern, Central and Western Oklahoma.
Eastern Oklahoma
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 11 | Bartlesville | 5.7 | 144 |
| 10 | Idabel | 6.4 | 161 |
| 11 | McAlester | 5.3 | 135 |
| 11 | Muskogee | 5.3 | 133 |
| 11 | Tulsa | 5.7 | 146 |
| 11 | Webbers Falls | 5.9 | 151 |
Central Oklahoma
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 10 | Ada | 5.4 | 136 |
| 8 | Ardmore | 5.7 | 145 |
| 9 | Chickasha | 5.0 | 128 |
| 10 | Enid | 4.4 | 111 |
| 9 | Great Salt Plains Lake Dam | 4.8 | 121 |
| 9 | Guthrie | 5.1 | 129 |
| 10 | Norman | 5.1 | 131 |
| 10 | Oklahoma City | 5.3 | 135 |
| 10 | Ponca City | 5.1 | 130 |
| 10 | Shawnee | 5.7 | 146 |
| 12 | Stillwater | 4.7 | 120 |
Western Oklahoma
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 8 | Altus | 4.1 | 103 |
| 8 | Altus Lake Dam | 4.6 | 116 |
| 6 | Beaver | 2.5 | 63 |
| 9 | Elk City | 4.5 | 113 |
| 8 | Lawton | 5.0 | 126 |
| 8 | Wichita Mountains Wildlife Refuge | 4.8 | 121 |
Reference
NOAA National Centers for Environmental Information (NCEI). Climate Normals.