Oswego, KS Weather & Growing Conditions
Tonight
47°F
Mostly Cloudy
Mostly cloudy, with a low around 47. West northwest wind 7 to 14 mph, with gusts as high as 21 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 47°F | Mostly Cloudy | 7 to 14 mph WNW | 6% |
| Wednesday | 62°F | Mostly Sunny | 7 to 12 mph W | 0% |
| Wednesday Night | 42°F | Clear | 1 to 5 mph SW | 4% |
| Thursday | 60°F | Mostly Sunny then Chance Rain Showers | 1 to 7 mph WNW | 49% |
| Thursday Night | 41°F | Slight Chance Rain Showers then Partly Cloudy | 5 mph NNW | 16% |
| Friday | 58°F | Mostly Sunny | 5 to 8 mph N | 0% |
| Friday Night | 39°F | Partly Cloudy | 0 to 5 mph NNE | 0% |
| Saturday | 59°F | Partly Sunny | 0 to 5 mph NNW | 1% |
| Saturday Night | 39°F | Mostly Clear | 2 mph WNW | 4% |
| Sunday | 64°F | Sunny | 2 to 7 mph W | 3% |
| Sunday Night | 40°F | Mostly Clear | 3 mph SW | 0% |
| Monday | 68°F | Sunny | 5 to 12 mph SSW | 0% |
| Monday Night | 44°F | Mostly Clear | 3 to 7 mph SSW | 1% |
| Tuesday | 70°F | Sunny | 5 to 9 mph SSW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Oswego, KS
Last spring frost
Apr 11
First fall frost
Oct 26
Growing season
196 days
Hardiness zone
7a
Explore more for Oswego, KS: full frost dates · planting calendar · Kansas frost dates
Climate data from the nearest NOAA station, Parsons 2 Nw, Ks (15.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.