Fairfax, OK Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Fairfax, a town in Osage County, Oklahoma.

Today

99°F

Sunny

Sunny, with a high near 99. Heat index values as high as 102. South wind 5 to 15 mph, with gusts as high as 20 mph.

7-day forecast for Fairfax

When	Temp	Forecast	Wind	Precip
Today	99°F	Sunny	5 to 15 mph S	1%
Tonight	73°F	Slight Chance Showers And Thunderstorms	5 to 10 mph S	38%
Sunday	89°F	Chance Showers And Thunderstorms then Showers And Thunderstorms Likely	5 to 10 mph SE	71%
Sunday Night	64°F	Chance Showers And Thunderstorms then Showers And Thunderstorms Likely	5 mph NE	59%
Monday	81°F	Chance Showers And Thunderstorms then Mostly Sunny	5 to 10 mph N	27%
Monday Night	59°F	Partly Cloudy	10 mph NE	6%
Tuesday	77°F	Mostly Sunny	10 mph NE	6%
Tuesday Night	55°F	Partly Cloudy	5 to 10 mph NE	2%
Wednesday	79°F	Mostly Sunny	5 mph NE	3%
Wednesday Night	58°F	Partly Cloudy	5 mph E	6%
Thursday	81°F	Slight Chance Rain Showers	5 mph E	22%
Thursday Night	61°F	Mostly Cloudy	5 mph E	14%
Friday	83°F	Slight Chance Rain Showers	5 mph SE	23%
Friday Night	63°F	Mostly Cloudy	5 mph E	14%

Forecast source: National Weather Service (api.weather.gov) for Fairfax (36.570, -96.708). Updated through the day.

Growing snapshot for Fairfax

Last spring frost

Apr 11

First fall frost

Oct 24

Growing season

196 days

Hardiness zone

More local growing data for Fairfax: nearby ZIP 74637 weather · frost dates · planting calendar · Oklahoma frost dates

Nearby towns & communities

All Oklahoma locations ›

Climate data from the nearest NOAA station, Ralston, Ok (8.8 mi from Fairfax). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.