Onaga, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Onaga, a city in Pottawatomie County, Kansas.
Today
55°F
Partly Sunny
Partly sunny, with a high near 55. West wind 5 to 10 mph.
7-day forecast for Onaga
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 55°F | Partly Sunny | 5 to 10 mph W | 0% |
| Tonight | 38°F | Mostly Clear | 0 to 5 mph W | 0% |
| Thursday | 54°F | Mostly Sunny | 5 mph NW | 3% |
| Thursday Night | 39°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Friday | 53°F | Partly Sunny | 0 to 5 mph N | 1% |
| Friday Night | 34°F | Mostly Cloudy | 0 mph | 0% |
| Saturday | 57°F | Mostly Sunny | 0 mph | 0% |
| Saturday Night | 37°F | Mostly Clear | 0 mph | 0% |
| Sunday | 63°F | Sunny | 0 mph | 0% |
| Sunday Night | 40°F | Clear | 0 mph | 0% |
| Monday | 68°F | Sunny | 0 to 5 mph SW | 0% |
| Monday Night | 43°F | Mostly Clear | 0 mph | 0% |
| Tuesday | 68°F | Sunny | 0 to 5 mph NE | 0% |
| Tuesday Night | 46°F | Partly Cloudy | 0 mph | 1% |
Forecast source: National Weather Service (api.weather.gov) for Onaga (39.489, -96.170). Updated through the day.
Growing snapshot for Onaga
Last spring frost
Apr 19
First fall frost
Oct 19
Growing season
182 days
Hardiness zone
6a
More local growing data for Onaga: nearby ZIP 66521 weather · frost dates · planting calendar · Kansas frost dates
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Wabaunsee
Wamego
Westmoreland
Wheaton
Climate data from the nearest NOAA station, Centralia, Ks (18.4 mi from Onaga). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.