Jefferson, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jefferson, a town in Grant County, Oklahoma.
Overnight
72°F
Mostly Clear
Mostly clear, with a low around 72. South southeast wind around 8 mph.
7-day forecast for Jefferson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 72°F | Mostly Clear | 8 mph SSE | 0% |
| Tuesday | 105°F | Mostly Sunny | 9 mph SSE | 1% |
| Tuesday Night | 76°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 9 mph SSE | 12% |
| Wednesday | 102°F | Slight Chance Showers And Thunderstorms | 6 to 9 mph SW | 13% |
| Wednesday Night | 72°F | Slight Chance Showers And Thunderstorms | 5 to 8 mph E | 18% |
| Thursday | 98°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 mph NW | 24% |
| Thursday Night | 72°F | Chance Showers And Thunderstorms | 7 mph ESE | 52% |
| Friday | 98°F | Chance Showers And Thunderstorms | 6 to 10 mph SSE | 52% |
| Friday Night | 73°F | Mostly Clear | 5 to 8 mph SSE | 9% |
| Saturday | 100°F | Sunny | 3 to 10 mph S | 9% |
| Saturday Night | 74°F | Clear | 9 mph SSE | 2% |
| Sunday | 102°F | Sunny | 8 to 14 mph S | 1% |
| Sunday Night | 75°F | Clear | 13 mph S | 0% |
| Monday | 102°F | Sunny | 10 to 15 mph SSW | 0% |
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 Aug 4, 2026.