Fairfax, SD Weather & Growing Conditions
Today
46°F
Chance Rain Showers
A chance of rain showers before 4pm. Mostly cloudy, with a high near 46. Northwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 46°F | Chance Rain Showers | 15 to 20 mph NW | 31% |
| Tonight | 37°F | Mostly Cloudy | 15 mph NW | 7% |
| Thursday | 48°F | Partly Sunny | 10 to 15 mph NNW | 0% |
| Thursday Night | 29°F | Partly Cloudy | 0 to 5 mph NNE | 0% |
| Friday | 48°F | Mostly Sunny | 0 to 5 mph SE | 0% |
| Friday Night | 32°F | Partly Cloudy | 5 mph S | 0% |
| Saturday | 59°F | Sunny | 5 to 10 mph W | 0% |
| Saturday Night | 37°F | Mostly Clear | 5 mph WNW | 0% |
| Sunday | 61°F | Sunny | 5 to 10 mph SW | 0% |
| Sunday Night | 42°F | Mostly Clear | 5 to 10 mph SSW | 0% |
| Monday | 62°F | Sunny | 5 to 10 mph WNW | 0% |
| Monday Night | 38°F | Mostly Clear | 0 to 5 mph NW | 0% |
| Tuesday | 60°F | Mostly Sunny | 5 mph S | 0% |
| Tuesday Night | 41°F | Partly Cloudy | 5 mph SSE | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fairfax, SD
Last spring frost
Apr 27
First fall frost
Oct 13
Growing season
168 days
Hardiness zone
5a
Explore more for Fairfax, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Pickstown 4Ssw, Sd (9.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.