Radnor, OH Weather & Growing Conditions
Tonight
60°F
Mostly Cloudy
Mostly cloudy, with a low around 60. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 60°F | Mostly Cloudy | 10 to 15 mph SE | 14% |
| Wednesday | 66°F | Showers And Thunderstorms | 17 mph S | 99% |
| Wednesday Night | 51°F | Showers And Thunderstorms then Mostly Cloudy | 7 to 17 mph SW | 81% |
| Thursday | 64°F | Mostly Sunny | 7 to 14 mph SW | 0% |
| Thursday Night | 45°F | Partly Cloudy | 2 to 8 mph SW | 2% |
| Friday | 59°F | Partly Sunny then Slight Chance Light Rain | 2 to 8 mph W | 17% |
| Friday Night | 39°F | Slight Chance Light Rain | 8 mph NW | 20% |
| Saturday | 53°F | Slight Chance Light Rain | 9 mph NW | 20% |
| Saturday Night | 34°F | Slight Chance Light Rain then Partly Cloudy | 2 to 6 mph W | 20% |
| Sunday | 56°F | Mostly Sunny then Slight Chance Light Rain | 3 to 10 mph W | 16% |
| Sunday Night | 34°F | Slight Chance Light Rain then Partly Cloudy | 9 mph W | 16% |
| Monday | 58°F | Slight Chance Light Rain | 6 to 12 mph W | 20% |
| Monday Night | 37°F | Slight Chance Light Rain then Partly Cloudy | 10 mph SW | 20% |
| Tuesday | 62°F | Mostly Sunny | 12 mph W | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Radnor, OH
Last spring frost
Apr 25
First fall frost
Oct 20
Growing season
178 days
Hardiness zone
6b
Explore more for Radnor, OH: full frost dates · planting calendar · Ohio frost dates
Climate data from the nearest NOAA station, Marion 2 N, Oh (14.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.