| Variable | Location (Data Source) | Value | Date |
|---|---|---|---|
| Maximum temperature * |
Alva (COOP) Altus (COOP) Poteau (COOP) Altus (COOP) |
120°F |
July 18, 1936 July 19, 1936 August 10, 1936 August 12, 1936 |
| Minimum temperature * | Nowata (Mesonet) | -31°F | February 10, 2011 |
| Number of days with temperature 100°F or higher | Grandfield (Mesonet) | 101 | 2011 (as of Sept. 29, 2011) |
| Number of consecutive days with temperature 100°F or higher | Hammon (COOP) | 70 | June 24, 1980 to September 1, 1980 |
| Warmest summer (June-August) | Statewide average | 86.9°F | June 1, 2011 to August 31, 2011 |
| Variable | Location (Data Source) | Value | Date |
|---|---|---|---|
| 24-hour rainfall * | Enid (COOP) | 15.68 inches | October 11, 1973 |
| 24-hour snowfall * | Spavinaw (COOP) | 27 inches | 11 PM CST on February 8, 2011 to 11 PM CST on February 9, 2011 |
| Snow depth * | Buffalo (COOP) | 36 inches | February 22, 1971 |
| Lowest annual total precipitation | Regnier (COOP) | 6.53 inches | 1956 |
| Driest year statewide | Statewide average (COOP) | 19.04 inches | 1910 |
| Variable | Location (Data Source) | Value | Date |
|---|---|---|---|
| Wind gust * | El Reno (Mesonet) | 150.8 mph | May 24, 2011 |
| Hail stone diameter * | 2 miles north of Gotebo | 6.0 inches | May 23, 2011 |
* Official state record as designated by NOAA's National Climatic Data Center (NCDC); ** awaiting NCDC approval as state record. All other records are calculated from data at the Oklahoma Climatological Survey and have not been sent to NCDC for official designation.
