Fairmont, OK Weather & Growing Conditions
Today
104°F
Mostly Sunny
Mostly sunny, with a high near 104. Heat index values as high as 102. South wind around 13 mph, with gusts as high as 20 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 104°F | Mostly Sunny | 13 mph S | 0% |
| Tonight | 77°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 12 mph SSE | 12% |
| Wednesday | 102°F | Slight Chance Showers And Thunderstorms | 9 to 13 mph SW | 12% |
| Wednesday Night | 74°F | Slight Chance Showers And Thunderstorms | 8 to 12 mph ESE | 12% |
| Thursday | 99°F | Mostly Sunny | 7 to 10 mph SW | 12% |
| Thursday Night | 73°F | Chance Showers And Thunderstorms | 10 mph SE | 38% |
| Friday | 98°F | Chance Showers And Thunderstorms | 9 to 13 mph SSE | 38% |
| Friday Night | 73°F | Mostly Clear | 7 to 12 mph SSE | 13% |
| Saturday | 99°F | Sunny | 7 to 13 mph S | 13% |
| Saturday Night | 75°F | Clear | 14 mph S | 2% |
| Sunday | 100°F | Sunny | 12 to 16 mph S | 1% |
| Sunday Night | 76°F | Clear | 15 mph S | 0% |
| Monday | 100°F | Sunny | 14 to 18 mph SSW | 0% |
| Monday Night | 77°F | Clear | 17 mph S | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fairmont, OK
Last spring frost
Apr 10
First fall frost
Oct 29
Growing season
202 days
Hardiness zone
7a
Explore more for Fairmont, OK: full frost dates · planting calendar · Oklahoma frost dates
Climate data from the nearest NOAA station, Breckinridge 3Se Mesnt, Ok (4.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.