May, OK Weather & Growing Conditions
This Afternoon
100°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 100. Heat index values as high as 100. South southwest wind around 17 mph, with gusts as high as 26 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 100°F | Slight Chance Showers And Thunderstorms | 17 mph SSW | 20% |
| Tonight | 68°F | Slight Chance Showers And Thunderstorms | 8 to 16 mph SSE | 25% |
| Sunday | 86°F | Mostly Sunny | 12 mph NNE | 13% |
| Sunday Night | 62°F | Partly Cloudy | 7 to 10 mph NE | 18% |
| Monday | 81°F | Partly Sunny | 9 mph NNE | 18% |
| Monday Night | 59°F | Partly Cloudy | 7 mph ENE | 5% |
| Tuesday | 80°F | Mostly Sunny | 8 mph E | 6% |
| Tuesday Night | 59°F | Partly Cloudy | 9 mph ESE | 3% |
| Wednesday | 81°F | Chance Rain Showers | 8 mph SE | 29% |
| Wednesday Night | 64°F | Chance Showers And Thunderstorms | 8 mph SSE | 38% |
| Thursday | 88°F | Chance Showers And Thunderstorms | 6 to 10 mph SSE | 47% |
| Thursday Night | 67°F | Chance Showers And Thunderstorms | 7 mph SSE | 52% |
| Friday | 88°F | Chance Showers And Thunderstorms | 8 mph SSE | 52% |
| Friday Night | 68°F | Chance Showers And Thunderstorms | 8 mph SE | 32% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for May, OK
Last spring frost
Apr 21
First fall frost
Oct 19
Growing season
179 days
Hardiness zone
7a
Explore more for May, OK: full frost dates · planting calendar · Oklahoma frost dates
Climate data from the nearest NOAA station, Ft Supply 3Se, Ok (13.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.