St. Francis, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Francis, a town in Todd County, South Dakota.
Overnight
31°F
Patchy Fog
Patchy fog. Partly cloudy. Low around 31, with temperatures rising to around 33 overnight. Northwest wind around 16 mph, with gusts as high as 26 mph.
7-day forecast for St. Francis
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 31°F | Patchy Fog | 16 mph NW | 0% |
| Wednesday | 48°F | Patchy Fog then Partly Sunny | 17 to 22 mph NW | 0% |
| Wednesday Night | 34°F | Mostly Cloudy | 16 mph NW | 1% |
| Thursday | 49°F | Mostly Sunny | 8 to 15 mph NW | 0% |
| Thursday Night | 28°F | Mostly Clear | 6 to 9 mph SE | 0% |
| Friday | 54°F | Mostly Sunny | 7 to 10 mph SW | 0% |
| Friday Night | 34°F | Partly Cloudy | 7 to 12 mph W | 0% |
| Saturday | 59°F | Sunny | 12 to 17 mph W | 0% |
| Saturday Night | 35°F | Mostly Clear | 10 mph W | 0% |
| Sunday | 65°F | Sunny | 10 to 16 mph SW | 0% |
| Sunday Night | 42°F | Mostly Clear | 13 to 20 mph SW | 0% |
| Monday | 61°F | Sunny | 8 to 17 mph NW | 0% |
| Monday Night | 37°F | Mostly Clear | 6 to 9 mph NW | 0% |
| Tuesday | 61°F | Mostly Sunny | 10 to 15 mph S | 0% |
Forecast source: National Weather Service (api.weather.gov) for St. Francis (43.143, -100.903). Updated through the day.
Growing snapshot for St. Francis
Last spring frost
May 9
First fall frost
Oct 1
Growing season
146 days
Hardiness zone
5a
More local growing data for St. Francis: nearby ZIP 57570 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Antelope
Mission
Okreek
Parmelee
Rosebud
Sicangu Village
Soldier Creek
Spring Creek
Two Strike
White Horse
Climate data from the nearest NOAA station, Mission, Sd (12.1 mi from St. Francis). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.