Jefferson, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jefferson, a town in Grant County, Oklahoma.
Tonight
43°F
Mostly Clear
Mostly clear, with a low around 43. West northwest wind around 3 mph.
7-day forecast for Jefferson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 43°F | Mostly Clear | 3 mph WNW | 0% |
| Wednesday | 65°F | Sunny | 3 to 7 mph W | 0% |
| Wednesday Night | 45°F | Mostly Clear | 3 mph SSE | 11% |
| Thursday | 59°F | Rain Showers | 2 to 9 mph N | 84% |
| Thursday Night | 38°F | Mostly Clear | 5 mph NNW | 2% |
| Friday | 62°F | Sunny | 6 mph N | 0% |
| Friday Night | 38°F | Partly Cloudy | 2 mph NNE | 1% |
| Saturday | 64°F | Mostly Sunny | 0 to 5 mph W | 2% |
| Saturday Night | 39°F | Mostly Clear | 1 mph WSW | 3% |
| Sunday | 68°F | Sunny | 1 to 5 mph WSW | 1% |
| Sunday Night | 41°F | Clear | 3 mph S | 1% |
| Monday | 71°F | Sunny | 3 to 9 mph SSW | 0% |
| Monday Night | 44°F | Mostly Clear | 6 mph S | 0% |
| Tuesday | 72°F | Mostly Sunny | 3 to 8 mph SSE | 1% |
Forecast source: National Weather Service (api.weather.gov) for Jefferson (36.720, -97.791). Updated through the day.
Growing snapshot for Jefferson
Last spring frost
Apr 18
First fall frost
Oct 20
Growing season
183 days
Hardiness zone
7a
More local growing data for Jefferson: nearby ZIP 73766 weather · frost dates · planting calendar · Oklahoma frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Jefferson 3Se, Ok (5.6 mi from Jefferson). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.