Newtown, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Newtown, a village in Hamilton County, Ohio.
This Afternoon
88°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 3pm and 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 88. Southwest wind around 7 mph. Chance of precipitation is 50%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Newtown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 88°F | Slight Chance Showers And Thunderstorms | 7 mph SW | 51% |
| Tonight | 69°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 6 mph S | 71% |
| Sunday | 89°F | Partly Sunny then Chance Showers And Thunderstorms | 3 to 8 mph SW | 32% |
| Sunday Night | 63°F | Showers And Thunderstorms Likely | 8 mph N | 57% |
| Monday | 75°F | Chance Rain Showers | 8 to 12 mph NE | 51% |
| Monday Night | 57°F | Chance Showers And Thunderstorms | 7 to 12 mph NE | 51% |
| Tuesday | 73°F | Chance Showers And Thunderstorms | 7 to 10 mph NE | 39% |
| Tuesday Night | 59°F | Chance Showers And Thunderstorms | 3 to 12 mph NE | 41% |
| Wednesday | 72°F | Chance Rain Showers | 7 mph NE | 49% |
| Wednesday Night | 57°F | Chance Showers And Thunderstorms | 2 to 8 mph NE | 49% |
| Thursday | 72°F | Mostly Cloudy | 3 to 8 mph NE | 13% |
| Thursday Night | 56°F | Mostly Cloudy | 3 to 8 mph NE | 13% |
| Friday | 73°F | Mostly Sunny | 3 to 9 mph NE | 8% |
| Friday Night | 54°F | Partly Cloudy | 3 to 9 mph NE | 6% |
Forecast source: National Weather Service (api.weather.gov) for Newtown (39.124, -84.351). Updated through the day.
Growing snapshot for Newtown
Last spring frost
Apr 16
First fall frost
Oct 25
Growing season
190 days
Hardiness zone
6b
More local growing data for Newtown: nearby ZIP 45244 weather · frost dates · planting calendar · Ohio frost dates
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Climate data from the nearest NOAA station, Cincinnati Lunken Ap, Oh (5 mi from Newtown). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.