Fort Supply, OK Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fort Supply, a town in Ellis County, Oklahoma.
This Afternoon
60°F
Partly Sunny
Partly sunny, with a high near 60. North northwest wind 15 to 22 mph, with gusts as high as 31 mph.
7-day forecast for Fort Supply
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 60°F | Partly Sunny | 15 to 22 mph NNW | 0% |
| Tonight | 41°F | Partly Cloudy | 5 to 12 mph WNW | 0% |
| Wednesday | 66°F | Sunny | 5 mph WSW | 0% |
| Wednesday Night | 46°F | Partly Cloudy then Chance Showers And Thunderstorms | 6 mph ESE | 35% |
| Thursday | 57°F | Rain Showers Likely | 7 to 13 mph N | 62% |
| Thursday Night | 38°F | Mostly Clear | 5 mph NNW | 0% |
| Friday | 60°F | Sunny | 2 mph N | 0% |
| Friday Night | 40°F | Partly Cloudy | 2 mph S | 1% |
| Saturday | 64°F | Mostly Sunny | 3 mph W | 2% |
| Saturday Night | 41°F | Mostly Clear | 0 to 3 mph W | 1% |
| Sunday | 67°F | Sunny | 3 mph WSW | 1% |
| Sunday Night | 44°F | Clear | 2 to 8 mph SSW | 0% |
| Monday | 71°F | Sunny | 10 mph SSW | 0% |
| Monday Night | 47°F | Mostly Clear | 7 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Fort Supply (36.572, -99.574). Updated through the day.
Growing snapshot for Fort Supply
Last spring frost
Apr 21
First fall frost
Oct 19
Growing season
179 days
Hardiness zone
7a
More local growing data for Fort Supply: nearby ZIP 73841 weather · frost dates · planting calendar · Oklahoma frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Ft Supply 3Se, Ok (4.7 mi from Fort Supply). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.