Sulphur, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sulphur, a city in Murray County, Oklahoma.
Today
101°F
Sunny
Sunny, with a high near 101. Heat index values as high as 102. South southeast wind around 7 mph.
7-day forecast for Sulphur
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 101°F | Sunny | 7 mph SSE | 0% |
| Tonight | 76°F | Mostly Clear | 7 mph SSE | 1% |
| Wednesday | 101°F | Sunny | 5 to 8 mph SSW | 2% |
| Wednesday Night | 77°F | Mostly Clear | 8 mph SSE | 2% |
| Thursday | 100°F | Mostly Sunny | 7 mph SSW | 9% |
| Thursday Night | 75°F | Partly Cloudy | 7 mph SSE | 10% |
| Friday | 97°F | Slight Chance Showers And Thunderstorms | 7 mph S | 21% |
| Friday Night | 74°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 7 mph SSE | 21% |
| Saturday | 97°F | Sunny | 7 mph S | 10% |
| Saturday Night | 74°F | Mostly Clear | 7 mph SSE | 6% |
| Sunday | 97°F | Sunny | 5 to 8 mph S | 3% |
| Sunday Night | 75°F | Mostly Clear | 8 mph SSE | 2% |
| Monday | 97°F | Sunny | 7 to 10 mph S | 2% |
| Monday Night | 75°F | Mostly Clear | 9 mph S | 2% |
Forecast source: National Weather Service (api.weather.gov) for Sulphur (34.502, -96.985). Updated through the day.
Growing snapshot for Sulphur
Last spring frost
Apr 4
First fall frost
Oct 31
Growing season
208 days
Hardiness zone
7b
More local growing data for Sulphur: nearby ZIP 73086 weather · frost dates · planting calendar · Oklahoma frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Chickasaw Nra, Ok (0.8 mi from Sulphur). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.