Ottawa, KS Weather & Growing Conditions
Tonight
73°F
Partly Cloudy
Partly cloudy, with a low around 73. South wind 5 to 10 mph, with gusts as high as 20 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 73°F | Partly Cloudy | 5 to 10 mph S | 3% |
| Saturday | 97°F | Mostly Sunny | 10 to 15 mph S | 9% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 0 to 10 mph W | 60% |
| Sunday | 84°F | Showers And Thunderstorms Likely | 0 to 5 mph N | 55% |
| Sunday Night | 63°F | Showers And Thunderstorms Likely | 5 mph NE | 64% |
| Monday | 74°F | Chance Showers And Thunderstorms | 5 to 10 mph N | 52% |
| Monday Night | 55°F | Mostly Cloudy | 5 to 10 mph N | 7% |
| Tuesday | 71°F | Partly Sunny | 5 mph NE | 4% |
| Tuesday Night | 50°F | Partly Cloudy | 0 to 5 mph NE | 4% |
| Wednesday | 73°F | Mostly Sunny | 0 to 5 mph NE | 2% |
| Wednesday Night | 54°F | Partly Cloudy | 0 to 5 mph E | 4% |
| Thursday | 75°F | Slight Chance Rain Showers | 0 to 5 mph E | 22% |
| Thursday Night | 57°F | Slight Chance Rain Showers | 0 to 5 mph E | 15% |
| Friday | 75°F | Slight Chance Rain Showers | 0 to 5 mph E | 22% |
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 Sep 19, 2026.