Dennison, OH Weather & Growing Conditions
Today
85°F
Sunny
Sunny, with a high near 85. East wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Sunny | 2 mph E | 0% |
| Tonight | 66°F | Mostly Clear | 2 mph E | 0% |
| Wednesday | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 mph S | 34% |
| Wednesday Night | 67°F | Chance Showers And Thunderstorms | 3 mph S | 45% |
| Thursday | 85°F | Chance Showers And Thunderstorms | 2 to 7 mph SW | 36% |
| Thursday Night | 67°F | Chance Showers And Thunderstorms | 1 to 5 mph SW | 44% |
| Friday | 83°F | Showers And Thunderstorms | 2 to 8 mph SW | 78% |
| Friday Night | 65°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph SW | 78% |
| Saturday | 83°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 3 to 7 mph SW | 44% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms | 5 mph SW | 44% |
| Sunday | 85°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 3 to 8 mph SW | 17% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 7 mph SW | 31% |
| Monday | 86°F | Chance Rain Showers | 7 to 10 mph SW | 35% |
| Monday Night | 67°F | Chance Showers And Thunderstorms | 5 to 8 mph SW | 46% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Dennison, OH
Last spring frost
Apr 29
First fall frost
Oct 15
Growing season
170 days
Hardiness zone
6b
Explore more for Dennison, OH: full frost dates · planting calendar · Ohio frost dates
Climate data from the nearest NOAA station, Dennison Wtr Wks, Oh (3.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.