Ottawa, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ottawa, a village in Putnam County, Ohio.
Today
83°F
Sunny
Sunny, with a high near 83. Southeast wind 0 to 5 mph.
7-day forecast for Ottawa
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Sunny | 0 to 5 mph SE | 0% |
| Tonight | 60°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 | 49% |
| 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) for Ottawa (41.020, -84.035). Updated through the day.
Growing snapshot for Ottawa
Last spring frost
Apr 23
First fall frost
Oct 22
Growing season
180 days
Hardiness zone
6a
More local growing data for Ottawa: nearby ZIP 45875 weather · frost dates · planting calendar · Ohio frost dates
Nearby towns & communities
Belmore
Cloverdale
Columbus Grove
Continental
Dupont
Fort Jennings
Gilboa
Glandorf
Kalida
Leipsic
Miller City
Ottoville
Pandora
Vaughnsville
West Leipsic
Climate data from the nearest NOAA station, Pandora, Oh (7.2 mi from Ottawa). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.