Fairfax, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fairfax, a city in Atchison County, Missouri.
Overnight
69°F
Mostly Cloudy
Mostly cloudy, with a low around 69. Southeast wind around 5 mph.
7-day forecast for Fairfax
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 69°F | Mostly Cloudy | 5 mph SE | 2% |
| Tuesday | 87°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 2 to 6 mph E | 17% |
| Tuesday Night | 66°F | Showers And Thunderstorms Likely | 7 to 10 mph NNE | 67% |
| Wednesday | 77°F | Showers And Thunderstorms Likely | 10 mph NE | 58% |
| Wednesday Night | 62°F | Chance Showers And Thunderstorms | 2 to 9 mph NE | 29% |
| Thursday | 83°F | Mostly Sunny | 3 mph ENE | 12% |
| Thursday Night | 65°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 3 mph SE | 21% |
| Friday | 87°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 3 to 7 mph SSE | 21% |
| Friday Night | 70°F | Mostly Clear | 6 mph SSE | 6% |
| Saturday | 92°F | Sunny | 3 to 13 mph S | 3% |
| Saturday Night | 74°F | Mostly Clear | 13 mph S | 4% |
| Sunday | 94°F | Mostly Sunny | 10 to 14 mph S | 4% |
| Sunday Night | 75°F | Partly Cloudy | 14 mph S | 7% |
| Monday | 95°F | Mostly Sunny | 12 to 16 mph S | 4% |
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 Aug 4, 2026.