Ottawa, KS Weather & Growing Conditions
Overnight
73°F
Mostly Clear
Mostly clear, with a low around 73. South wind around 10 mph, with gusts as high as 20 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 73°F | Mostly Clear | 10 mph S | 2% |
| Saturday | 96°F | Sunny | 10 to 15 mph SW | 6% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph NW | 76% |
| Sunday | 82°F | Chance Showers And Thunderstorms | 5 to 10 mph N | 43% |
| Sunday Night | 62°F | Chance Showers And Thunderstorms | 5 to 10 mph N | 62% |
| Monday | 72°F | Showers And Thunderstorms Likely | 5 to 10 mph N | 62% |
| Monday Night | 54°F | Mostly Cloudy | 5 to 10 mph N | 5% |
| Tuesday | 69°F | Partly Sunny | 5 to 10 mph NE | 1% |
| Tuesday Night | 50°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Wednesday | 72°F | Mostly Sunny | 0 to 5 mph E | 3% |
| Wednesday Night | 53°F | Partly Cloudy | 0 to 5 mph E | 5% |
| Thursday | 75°F | Chance Rain Showers | 0 to 5 mph E | 28% |
| Thursday Night | 57°F | Slight Chance Rain Showers | 0 to 5 mph E | 21% |
| Friday | 75°F | Chance Rain Showers | 0 to 5 mph E | 28% |
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.