Mason, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mason, a city in Warren County, Ohio.
Today
85°F
Sunny
Sunny, with a high near 85. Northeast wind around 5 mph.
7-day forecast for Mason
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Sunny | 5 mph NE | 0% |
| Tonight | 64°F | Mostly Clear | 3 mph NE | 1% |
| Wednesday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 3 mph NW | 18% |
| Wednesday Night | 67°F | Partly Cloudy | 3 mph SE | 8% |
| Thursday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 1 to 7 mph SW | 28% |
| Thursday Night | 68°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph S | 57% |
| Friday | 85°F | Showers And Thunderstorms Likely | 3 to 8 mph SW | 65% |
| Friday Night | 67°F | Showers And Thunderstorms Likely | 2 to 6 mph SW | 65% |
| Saturday | 85°F | Chance Showers And Thunderstorms | 2 to 7 mph SW | 31% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 5 mph SW | 31% |
| Sunday | 88°F | Mostly Sunny | 2 to 9 mph SW | 13% |
| Sunday Night | 70°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 6 mph SW | 17% |
| Monday | 89°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 22% |
| Monday Night | 70°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 3 to 7 mph SW | 28% |
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
Nearby towns & communities
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Kings Mills
Landen
Lebanon
Loveland Park
Maineville
Morrow
Pleasant Plain
Roachester
South Lebanon
Springboro
Waynesville
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 Aug 4, 2026.