Fairfax, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fairfax, a city in Atchison County, Missouri.
Overnight
71°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 3am. Partly cloudy, with a low around 71. South wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Fairfax
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 71°F | Chance Showers And Thunderstorms | 7 to 10 mph S | 42% |
| Saturday | 86°F | Chance Showers And Thunderstorms | 6 to 10 mph SSW | 35% |
| Saturday Night | 65°F | Showers And Thunderstorms Likely | 8 mph N | 66% |
| Sunday | 71°F | Chance Showers And Thunderstorms | 9 mph NNE | 52% |
| Sunday Night | 61°F | Chance Showers And Thunderstorms | 6 to 9 mph NE | 52% |
| Monday | 64°F | Chance Rain Showers | 9 mph NNE | 36% |
| Monday Night | 55°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 9 mph NNE | 23% |
| Tuesday | 64°F | Mostly Cloudy | 8 mph NE | 7% |
| Tuesday Night | 51°F | Partly Cloudy | 2 to 6 mph ENE | 4% |
| Wednesday | 67°F | Partly Sunny | 5 mph E | 2% |
| Wednesday Night | 55°F | Mostly Cloudy | 2 mph ESE | 10% |
| Thursday | 68°F | Chance Rain Showers | 5 mph SE | 31% |
| Thursday Night | 58°F | Slight Chance Rain Showers | 2 mph ESE | 20% |
| Friday | 69°F | Slight Chance Rain Showers | 2 to 6 mph ESE | 21% |
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 Sep 19, 2026.