Blue Ash, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Blue Ash, a city in Hamilton County, Ohio.
Tonight
63°F
Partly Cloudy then Areas Of Fog
Areas of fog after 3am. Partly cloudy, with a low around 63. East wind around 5 mph.
7-day forecast for Blue Ash
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 63°F | Partly Cloudy then Areas Of Fog | 5 mph E | 2% |
| Saturday | 85°F | Widespread Fog then Chance Rain Showers | 6 mph SE | 42% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph S | 55% |
| Sunday | 85°F | Chance Showers And Thunderstorms | 3 to 7 mph SW | 44% |
| Sunday Night | 65°F | Chance Showers And Thunderstorms | 7 to 10 mph NE | 44% |
| Monday | 78°F | Chance Showers And Thunderstorms | 10 mph NE | 47% |
| Monday Night | 60°F | Chance Showers And Thunderstorms | 8 to 13 mph NE | 50% |
| Tuesday | 74°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 10 mph NE | 44% |
| Tuesday Night | 60°F | Chance Showers And Thunderstorms | 5 to 12 mph NE | 40% |
| Wednesday | 73°F | Chance Rain Showers | 6 to 9 mph N | 33% |
| Wednesday Night | 59°F | Chance Showers And Thunderstorms then Mostly Cloudy | 5 to 9 mph N | 30% |
| Thursday | 73°F | Partly Sunny | 5 to 9 mph N | 11% |
| Thursday Night | 58°F | Mostly Cloudy | 3 to 9 mph N | 11% |
| Friday | 72°F | Mostly Sunny | 5 to 9 mph N | 6% |
Forecast source: National Weather Service (api.weather.gov) for Blue Ash (39.246, -84.387). Updated through the day.
Growing snapshot for Blue Ash
Last spring frost
Apr 23
First fall frost
Oct 18
Growing season
177 days
Hardiness zone
6b
More local growing data for Blue Ash: nearby ZIP 45241 weather · frost dates · planting calendar · Ohio frost dates
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Climate data from the nearest NOAA station, Milford, Oh (8.9 mi from Blue Ash). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.