Fairfax, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fairfax, a city in Atchison County, Missouri.
Tonight
44°F
Patchy Drizzle
Patchy drizzle before 1am. Cloudy, with a low around 44. Northwest wind 9 to 14 mph, with gusts as high as 22 mph.
7-day forecast for Fairfax
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 44°F | Patchy Drizzle | 9 to 14 mph NW | 12% |
| Wednesday | 55°F | Mostly Cloudy | 9 to 15 mph WNW | 4% |
| Wednesday Night | 41°F | Partly Cloudy | 8 mph W | 1% |
| Thursday | 54°F | Mostly Cloudy | 8 to 12 mph NW | 12% |
| Thursday Night | 41°F | Mostly Cloudy | 7 mph NNW | 2% |
| Friday | 54°F | Partly Sunny | 2 to 6 mph N | 1% |
| Friday Night | 34°F | Mostly Cloudy | 1 mph NE | 0% |
| Saturday | 57°F | Mostly Sunny | 0 to 3 mph S | 1% |
| Saturday Night | 37°F | Mostly Clear | 2 mph WSW | 0% |
| Sunday | 63°F | Sunny | 3 mph WSW | 0% |
| Sunday Night | 39°F | Clear | 3 mph SSW | 0% |
| Monday | 68°F | Sunny | 3 to 8 mph SSW | 0% |
| Monday Night | 43°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 68°F | Sunny | 5 mph NNE | 0% |
Forecast source: National Weather Service (api.weather.gov) for Fairfax (40.340, -95.392). Updated through the day.
Growing snapshot for Fairfax
Last spring frost
Apr 19
First fall frost
Oct 15
Growing season
177 days
Hardiness zone
5b
More local growing data for Fairfax: nearby ZIP 64446 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Tarkio, Mo (7.7 mi from Fairfax). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.