Sulphur, OK Weather & Growing Conditions
Overnight
46°F
Clear
Clear, with a low around 46. Northwest wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 46°F | Clear | 3 mph NW | 0% |
| Wednesday | 68°F | Sunny | 0 to 3 mph WNW | 0% |
| Wednesday Night | 48°F | Mostly Clear | 0 to 3 mph SSE | 0% |
| Thursday | 71°F | Mostly Sunny | 3 to 9 mph SSW | 13% |
| Thursday Night | 46°F | Chance Rain Showers then Partly Cloudy | 6 to 12 mph N | 25% |
| Friday | 63°F | Sunny | 5 to 8 mph N | 0% |
| Friday Night | 42°F | Partly Cloudy | 3 mph NNE | 0% |
| Saturday | 62°F | Partly Sunny | 3 mph NNE | 1% |
| Saturday Night | 41°F | Partly Cloudy | 2 mph N | 1% |
| Sunday | 66°F | Mostly Sunny | 2 mph N | 0% |
| Sunday Night | 41°F | Mostly Clear | 1 mph WSW | 0% |
| Monday | 69°F | Sunny | 3 mph SSW | 0% |
| Monday Night | 44°F | Clear | 2 mph S | 1% |
| Tuesday | 71°F | Sunny | 5 mph S | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sulphur, OK
Last spring frost
Apr 4
First fall frost
Oct 31
Growing season
208 days
Hardiness zone
7b
Explore more for Sulphur, OK: full frost dates · planting calendar · Oklahoma frost dates
Climate data from the nearest NOAA station, Chickasaw Nra, Ok (0.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.