Mason, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mason, a city in Warren County, Ohio.
This Afternoon
76°F
Sunny
Sunny, with a high near 76. South wind 9 to 13 mph.
7-day forecast for Mason
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Sunny | 9 to 13 mph S | 1% |
| Tonight | 61°F | Mostly Cloudy then Showers And Thunderstorms Likely | 8 to 14 mph SE | 66% |
| Wednesday | 68°F | Showers And Thunderstorms | 12 to 17 mph S | 99% |
| Wednesday Night | 50°F | Chance Rain Showers | 5 to 10 mph SW | 39% |
| Thursday | 66°F | Mostly Sunny | 5 to 13 mph SW | 0% |
| Thursday Night | 44°F | Partly Cloudy | 1 to 6 mph SW | 1% |
| Friday | 61°F | Partly Sunny | 1 to 9 mph NW | 7% |
| Friday Night | 39°F | Partly Cloudy | 7 mph NW | 12% |
| Saturday | 55°F | Mostly Sunny | 7 mph NW | 12% |
| Saturday Night | 34°F | Partly Cloudy | 3 mph W | 9% |
| Sunday | 57°F | Mostly Sunny | 1 to 10 mph W | 9% |
| Sunday Night | 34°F | Partly Cloudy | 2 to 6 mph W | 12% |
| Monday | 60°F | Sunny | 2 to 9 mph W | 12% |
| Monday Night | 37°F | Mostly Clear | 6 mph SW | 10% |
Forecast source: National Weather Service (api.weather.gov) for Mason (39.352, -84.302). Updated through the day.
Growing snapshot for Mason
Last spring frost
Apr 22
First fall frost
Oct 18
Growing season
178 days
Hardiness zone
6b
More local growing data for Mason: nearby ZIP 45040 weather · frost dates · planting calendar · Ohio frost dates
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Climate data from the nearest NOAA station, Hamilton Butler Co Rgnl Ap, Oh (11.3 mi from Mason). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.