Stillwater, OK Weather & Growing Conditions
Today
99°F
Sunny
Sunny, with a high near 99. Heat index values as high as 102. South southwest wind around 12 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny | 12 mph SSW | 8% |
| Tonight | 74°F | Partly Cloudy then Chance Showers And Thunderstorms | 7 to 10 mph S | 26% |
| Sunday | 91°F | Showers And Thunderstorms | 8 mph SSE | 81% |
| Sunday Night | 65°F | Showers And Thunderstorms Likely | 6 mph NE | 62% |
| Monday | 83°F | Slight Chance Rain Showers then Mostly Sunny | 6 to 9 mph NNE | 23% |
| Monday Night | 60°F | Partly Cloudy | 8 mph NE | 10% |
| Tuesday | 78°F | Mostly Sunny | 8 mph NE | 10% |
| Tuesday Night | 56°F | Partly Cloudy | 5 to 8 mph NE | 3% |
| Wednesday | 80°F | Mostly Sunny | 6 mph ENE | 6% |
| Wednesday Night | 59°F | Partly Cloudy | 5 mph ENE | 7% |
| Thursday | 82°F | Slight Chance Rain Showers | 5 mph ESE | 23% |
| Thursday Night | 62°F | Mostly Cloudy | 5 mph E | 13% |
| Friday | 83°F | Slight Chance Rain Showers | 6 mph ESE | 20% |
| Friday Night | 63°F | Mostly Cloudy | 5 mph ESE | 12% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Stillwater, OK
Last spring frost
Apr 5
First fall frost
Oct 30
Growing season
206 days
Hardiness zone
7a
Explore more for Stillwater, OK: full frost dates · planting calendar · Oklahoma frost dates
Climate data from the nearest NOAA station, Stillwater 2 W, Ok (1.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.