South Haven, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Haven, a city in Sumner County, Kansas.
Overnight
43°F
Mostly Clear
Mostly clear, with a low around 43. West northwest wind around 5 mph.
7-day forecast for South Haven
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 43°F | Mostly Clear | 5 mph WNW | 0% |
| Wednesday | 64°F | Sunny | 3 to 8 mph W | 0% |
| Wednesday Night | 45°F | Mostly Clear | 0 to 3 mph ESE | 10% |
| Thursday | 58°F | Rain Showers Likely | 3 to 8 mph N | 60% |
| Thursday Night | 39°F | Mostly Clear | 5 mph NNW | 1% |
| Friday | 59°F | Sunny | 7 mph NNE | 0% |
| Friday Night | 38°F | Mostly Cloudy | 3 mph NE | 0% |
| Saturday | 60°F | Mostly Sunny | 3 mph ESE | 0% |
| Saturday Night | 38°F | Partly Cloudy | 1 mph NNE | 0% |
| Sunday | 64°F | Sunny | 3 mph NW | 0% |
| Sunday Night | 39°F | Clear | 2 mph SSW | 0% |
| Monday | 69°F | Sunny | 2 to 8 mph SSW | 0% |
| Monday Night | 44°F | Clear | 6 mph SSW | 0% |
| Tuesday | 70°F | Sunny | 3 to 7 mph S | 1% |
Forecast source: National Weather Service (api.weather.gov) for South Haven (37.049, -97.401). Updated through the day.
Growing snapshot for South Haven
Last spring frost
Apr 15
First fall frost
Oct 29
Growing season
195 days
Hardiness zone
7a
More local growing data for South Haven: nearby ZIP 67140 weather · frost dates · planting calendar · Kansas frost dates
Nearby towns & communities
Argonia
Belle Plaine
Caldwell
Conway Springs
Geuda Springs
Hunnewell
Mayfield
Milan
Milton
Mulvane
Oxford
Peck
Wellington
Climate data from the nearest NOAA station, Wellington, Ks (13.4 mi from South Haven). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.