Ottawa, OH Weather & Growing Conditions
Overnight
57°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 57. East wind around 5 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Slight Chance Showers And Thunderstorms | 5 mph E | 15% |
| Saturday | 76°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph E | 67% |
| Saturday Night | 64°F | Chance Showers And Thunderstorms | 5 mph S | 75% |
| Sunday | 75°F | Showers And Thunderstorms | 5 to 15 mph NW | 86% |
| Sunday Night | 54°F | Showers And Thunderstorms Likely | 15 mph NE | 61% |
| 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 | 52°F | Chance Rain Showers | 15 to 20 mph NE | 52% |
| Wednesday | 66°F | Chance Rain Showers | 15 mph NE | 52% |
| Wednesday Night | 52°F | Chance Showers And Thunderstorms | 5 to 15 mph NE | 51% |
| Thursday | 68°F | Mostly Cloudy | 10 mph NE | 13% |
| Thursday Night | 51°F | Mostly Cloudy | 5 to 10 mph NE | 11% |
| Friday | 70°F | Mostly Sunny | 5 to 10 mph NE | 10% |
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 Sep 19, 2026.