Fairfax, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fairfax, a city in Atchison County, Missouri.
This Afternoon
65°F
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy. High near 65, with temperatures falling to around 56 in the afternoon. North northwest wind around 21 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Fairfax
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 65°F | Showers And Thunderstorms | 21 mph NNW | 82% |
| Tonight | 44°F | Chance Rain Showers then Cloudy | 14 to 21 mph NW | 38% |
| Wednesday | 56°F | Mostly Cloudy | 9 to 16 mph WNW | 8% |
| Wednesday Night | 40°F | Partly Cloudy | 8 mph W | 8% |
| Thursday | 55°F | Chance Rain Showers | 8 to 12 mph NW | 26% |
| Thursday Night | 39°F | Mostly Cloudy | 7 mph NNW | 5% |
| Friday | 55°F | Partly Sunny | 1 to 6 mph N | 2% |
| Friday Night | 36°F | Mostly Cloudy | 1 mph NNW | 0% |
| Saturday | 61°F | Mostly Sunny | 1 to 5 mph SW | 2% |
| Saturday Night | 38°F | Mostly Clear | 2 mph W | 6% |
| Sunday | 66°F | Sunny | 5 mph WSW | 3% |
| Sunday Night | 41°F | Mostly Clear | 3 mph SSW | 0% |
| Monday | 69°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 43°F | Mostly Clear | 2 to 6 mph WNW | 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 3, 2026.