St. John, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. John, a city in Stafford County, Kansas.
This Afternoon
58°F
Mostly Cloudy
Mostly cloudy, with a high near 58. North northwest wind 16 to 26 mph, with gusts as high as 37 mph.
7-day forecast for St. John
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 58°F | Mostly Cloudy | 16 to 26 mph NNW | 0% |
| Tonight | 40°F | Mostly Clear | 6 to 13 mph NW | 0% |
| Wednesday | 62°F | Sunny | 1 to 8 mph WNW | 0% |
| Wednesday Night | 43°F | Partly Cloudy then Chance Rain Showers | 0 to 6 mph NNW | 36% |
| Thursday | 56°F | Chance Rain Showers then Mostly Sunny | 6 to 10 mph NNW | 41% |
| Thursday Night | 36°F | Mostly Clear | 5 mph NNW | 1% |
| Friday | 58°F | Sunny | 0 to 3 mph NNE | 0% |
| Friday Night | 37°F | Partly Cloudy | 2 mph SSE | 1% |
| Saturday | 64°F | Mostly Sunny | 3 mph W | 3% |
| Saturday Night | 40°F | Clear | 3 mph W | 4% |
| Sunday | 68°F | Sunny | 5 mph WSW | 1% |
| Sunday Night | 42°F | Clear | 7 mph SSW | 0% |
| Monday | 69°F | Sunny | 9 mph SSW | 0% |
| Monday Night | 44°F | Mostly Clear | 6 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for St. John (38.000, -98.761). Updated through the day.
Growing snapshot for St. John
Last spring frost
Apr 18
First fall frost
Oct 21
Growing season
185 days
Hardiness zone
6b
More local growing data for St. John: nearby ZIP 67576 weather · frost dates · planting calendar · Kansas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Hudson, Ks (8.8 mi from St. John). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.