Ottawa, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ottawa, a village in Putnam County, Ohio.
Overnight
57°F
Mostly Cloudy
Mostly cloudy, with a low around 57. East wind around 5 mph.
7-day forecast for Ottawa
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Mostly Cloudy | 5 mph E | 2% |
| Saturday | 78°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph E | 63% |
| Saturday Night | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 mph S | 75% |
| Sunday | 75°F | Showers And Thunderstorms | 5 to 15 mph NW | 86% |
| Sunday Night | 54°F | Rain Showers Likely | 15 mph NE | 62% |
| Monday | 66°F | Chance Rain Showers | 15 to 20 mph NE | 47% |
| Monday Night | 51°F | Chance Rain Showers | 15 to 20 mph NE | 37% |
| Tuesday | 65°F | Mostly Cloudy then Slight Chance Rain Showers | 15 to 20 mph NE | 19% |
| Tuesday Night | 54°F | Chance Rain Showers | 15 to 20 mph NE | 39% |
| Wednesday | 67°F | Chance Rain Showers | 15 mph NE | 39% |
| Wednesday Night | 53°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 22% |
| Thursday | 68°F | Mostly Cloudy | 10 mph N | 9% |
| Thursday Night | 52°F | Mostly Cloudy | 5 to 10 mph N | 9% |
| Friday | 70°F | Partly Sunny | 5 to 10 mph N | 7% |
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 Sep 19, 2026.