Ottawa, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ottawa, a city in Franklin County, Kansas.
Overnight
45°F
Mostly Cloudy
Mostly cloudy, with a low around 45. West wind around 10 mph, with gusts as high as 20 mph.
7-day forecast for Ottawa
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 45°F | Mostly Cloudy | 10 mph W | 0% |
| Wednesday | 58°F | Partly Sunny | 5 to 10 mph W | 0% |
| Wednesday Night | 40°F | Clear | 0 to 5 mph W | 0% |
| Thursday | 57°F | Sunny | 5 mph NW | 1% |
| Thursday Night | 42°F | Partly Cloudy | 5 mph N | 3% |
| Friday | 56°F | Partly Sunny | 5 mph N | 1% |
| Friday Night | 35°F | Mostly Cloudy | 0 mph | 0% |
| Saturday | 57°F | Mostly Sunny | 0 mph | 0% |
| Saturday Night | 36°F | Mostly Clear | 0 mph | 0% |
| Sunday | 62°F | Sunny | 0 mph | 0% |
| Sunday Night | 38°F | Clear | 0 mph | 0% |
| Monday | 68°F | Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 42°F | Clear | 0 to 5 mph SW | 0% |
| Tuesday | 69°F | Sunny | 0 to 5 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Ottawa (38.600, -95.263). Updated through the day.
Growing snapshot for Ottawa
Last spring frost
Apr 18
First fall frost
Oct 20
Growing season
183 days
Hardiness zone
6b
More local growing data for Ottawa: nearby ZIP 66067 weather · frost dates · planting calendar · Kansas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Ottawa, Ks (0.5 mi from Ottawa). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.