Ottawa, KS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ottawa, a city in Franklin County, Kansas.
Today
93°F
Mostly Sunny
Mostly sunny, with a high near 93. South wind 5 to 10 mph.
7-day forecast for Ottawa
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 93°F | Mostly Sunny | 5 to 10 mph S | 3% |
| Tonight | 72°F | Partly Cloudy | 5 mph SE | 12% |
| Wednesday | 90°F | Chance Showers And Thunderstorms | 5 to 10 mph E | 32% |
| Wednesday Night | 67°F | Chance Showers And Thunderstorms | 5 mph N | 65% |
| Thursday | 87°F | Showers And Thunderstorms Likely then Partly Sunny | 5 mph NE | 65% |
| Thursday Night | 68°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 49% |
| Friday | 90°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 49% |
| Friday Night | 70°F | Mostly Clear | 5 mph S | 11% |
| Saturday | 93°F | Sunny | 5 to 10 mph S | 11% |
| Saturday Night | 74°F | Mostly Clear | 10 mph S | 1% |
| Sunday | 94°F | Sunny | 10 to 15 mph S | 1% |
| Sunday Night | 75°F | Mostly Clear | 10 to 15 mph S | 1% |
| Monday | 95°F | Sunny | 10 to 15 mph S | 1% |
| Monday Night | 76°F | Mostly Clear | 10 to 15 mph S | 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 Aug 4, 2026.