Dennison, OH Weather & Growing Conditions
Today
69°F
Light Rain
Rain. Mostly cloudy. High near 69, with temperatures falling to around 63 in the afternoon. South wind 7 to 12 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 69°F | Light Rain | 7 to 12 mph S | 88% |
| Tonight | 56°F | Light Rain | 7 to 14 mph S | 89% |
| Thursday | 67°F | Mostly Sunny | 7 to 14 mph SW | 10% |
| Thursday Night | 46°F | Mostly Cloudy | 3 to 7 mph SW | 1% |
| Friday | 59°F | Chance Light Rain | 3 to 8 mph W | 47% |
| Friday Night | 37°F | Chance Light Rain then Mostly Cloudy | 7 mph W | 47% |
| Saturday | 52°F | Mostly Cloudy then Slight Chance Light Rain | 7 to 12 mph W | 16% |
| Saturday Night | 33°F | Slight Chance Light Rain then Mostly Cloudy | 5 to 8 mph W | 16% |
| Sunday | 56°F | Sunny | 5 to 12 mph W | 2% |
| Sunday Night | 32°F | Mostly Clear | 5 to 9 mph W | 2% |
| Monday | 59°F | Sunny | 5 to 10 mph W | 0% |
| Monday Night | 36°F | Mostly Clear | 7 mph SW | 0% |
| Tuesday | 63°F | Sunny | 7 to 10 mph SW | 1% |
| Tuesday Night | 35°F | Mostly Clear | 2 to 6 mph W | 1% |
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 Nov 4, 2026.