Ottawa, OH Weather & Growing Conditions
Today
83°F
Sunny
Sunny, with a high near 83. Southeast wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Sunny | 0 to 5 mph SE | 0% |
| Tonight | 59°F | Mostly Clear | 0 to 5 mph SE | 0% |
| Wednesday | 86°F | Sunny | 0 to 5 mph S | 0% |
| Wednesday Night | 65°F | Mostly Clear | 0 to 5 mph SW | 5% |
| Thursday | 85°F | Partly Sunny then Showers And Thunderstorms Likely | 5 to 10 mph SW | 55% |
| Thursday Night | 65°F | Showers And Thunderstorms Likely | 5 to 10 mph SW | 68% |
| Friday | 84°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 to 10 mph SW | 61% |
| Friday Night | 65°F | Chance Showers And Thunderstorms | 5 mph SW | 48% |
| Saturday | 85°F | Mostly Sunny | 5 to 10 mph SW | 13% |
| Saturday Night | 66°F | Partly Cloudy then Slight Chance Rain Showers | 5 to 10 mph SW | 18% |
| Sunday | 87°F | Slight Chance Rain Showers then Mostly Sunny | 5 to 15 mph SW | 18% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 10 to 15 mph SW | 37% |
| Monday | 87°F | Chance Rain Showers | 10 to 15 mph SW | 37% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 10 to 15 mph SW | 48% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Ottawa, OH
Last spring frost
Apr 23
First fall frost
Oct 22
Growing season
180 days
Hardiness zone
6a
Explore more for Ottawa, OH: full frost dates · planting calendar · Ohio frost dates
Climate data from the nearest NOAA station, Pandora, Oh (7.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.