Fairfax, SD Weather & Growing Conditions
This Afternoon
46°F
Chance Rain Showers
A chance of rain showers. Mostly cloudy, with a high near 46. Northwest wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 46°F | Chance Rain Showers | 15 to 25 mph NW | 41% |
| Tonight | 36°F | Mostly Cloudy | 15 mph NW | 7% |
| Thursday | 49°F | Partly Sunny | 10 to 15 mph NNW | 0% |
| Thursday Night | 28°F | Mostly Cloudy | 0 to 5 mph N | 0% |
| Friday | 47°F | Mostly Sunny | 0 to 5 mph SSE | 0% |
| Friday Night | 32°F | Partly Cloudy | 5 mph S | 0% |
| Saturday | 61°F | Sunny | 0 to 5 mph WSW | 0% |
| Saturday Night | 36°F | Mostly Clear | 0 to 5 mph W | 0% |
| Sunday | 63°F | Sunny | 5 to 10 mph SW | 0% |
| Sunday Night | 43°F | Clear | 5 to 10 mph SSW | 0% |
| Monday | 63°F | Sunny | 5 to 10 mph WNW | 0% |
| Monday Night | 38°F | Mostly Clear | 5 mph NW | 0% |
| Tuesday | 59°F | Mostly Sunny | 5 mph S | 0% |
| Tuesday Night | 40°F | Partly Cloudy | 0 to 5 mph SSE | 0% |
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 5, 2026.