Ottawa, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ottawa, a village in Putnam County, Ohio.
Tonight
62°F
Mostly Cloudy then Chance Rain Showers
A chance of rain showers after 3am. Mostly cloudy, with a low around 62. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
7-day forecast for Ottawa
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 62°F | Mostly Cloudy then Chance Rain Showers | 15 mph S | 44% |
| Wednesday | 70°F | Rain Showers Likely | 15 to 20 mph S | 74% |
| Wednesday Night | 51°F | Chance Rain Showers | 10 to 15 mph SW | 44% |
| Thursday | 62°F | Mostly Sunny | 10 to 15 mph SW | 2% |
| Thursday Night | 46°F | Mostly Cloudy | 5 to 10 mph SW | 1% |
| Friday | 56°F | Chance Rain Showers | 5 to 10 mph NW | 31% |
| Friday Night | 37°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NW | 14% |
| Saturday | 53°F | Slight Chance Rain Showers | 5 to 10 mph NW | 17% |
| Saturday Night | 33°F | Partly Cloudy | 5 mph W | 6% |
| Sunday | 55°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 15 mph W | 17% |
| Sunday Night | 33°F | Slight Chance Rain Showers then Partly Cloudy | 5 to 10 mph W | 17% |
| Monday | 58°F | Mostly Sunny | 5 to 15 mph W | 14% |
| Monday Night | 38°F | Mostly Clear | 10 mph SW | 12% |
| Tuesday | 61°F | Mostly Sunny | 10 to 15 mph W | 3% |
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 Nov 4, 2026.