Ottawa, KS Weather & Growing Conditions
Tonight
45°F
Mostly Cloudy
Mostly cloudy, with a low around 45. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 45°F | Mostly Cloudy | 10 to 15 mph NW | 10% |
| Wednesday | 59°F | Partly Sunny | 5 to 10 mph W | 1% |
| Wednesday Night | 39°F | Clear | 0 to 5 mph W | 7% |
| Thursday | 58°F | Mostly Sunny | 0 to 5 mph NW | 14% |
| Thursday Night | 39°F | Mostly Cloudy | 0 to 5 mph NW | 2% |
| Friday | 57°F | Partly Sunny | 5 mph N | 0% |
| Friday Night | 37°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 61°F | Partly Sunny | 0 mph | 2% |
| Saturday Night | 37°F | Mostly Clear | 0 mph | 5% |
| Sunday | 65°F | Sunny | 0 to 5 mph W | 4% |
| Sunday Night | 39°F | Mostly Clear | 0 to 5 mph SW | 0% |
| Monday | 69°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 0 to 5 mph SW | 0% |
| Tuesday | 70°F | Sunny | 0 to 5 mph S | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Ottawa, KS
Last spring frost
Apr 18
First fall frost
Oct 20
Growing season
183 days
Hardiness zone
6b
Explore more for Ottawa, KS: full frost dates · planting calendar · Kansas frost dates
Climate data from the nearest NOAA station, Ottawa, Ks (0.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.