Harman US

London, OH Weather & Growing Conditions

Today
84°F
Sunny
Sunny, with a high near 84. Northeast wind around 3 mph.

7-day forecast

WhenTempForecastWindPrecip
Today 84°F Sunny 3 mph NE 0%
Tonight 63°F Mostly Clear 3 mph NE 2%
Wednesday 86°F Mostly Sunny then Chance Showers And Thunderstorms 3 mph NW 35%
Wednesday Night 66°F Slight Chance Showers And Thunderstorms then Partly Cloudy 3 mph SW 19%
Thursday 86°F Mostly Sunny then Chance Showers And Thunderstorms 2 to 8 mph SW 41%
Thursday Night 67°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 6 mph SW 64%
Friday 84°F Showers And Thunderstorms Likely 3 to 9 mph SW 68%
Friday Night 66°F Showers And Thunderstorms Likely 3 to 7 mph SW 68%
Saturday 84°F Chance Showers And Thunderstorms 3 to 8 mph SW 32%
Saturday Night 66°F Chance Showers And Thunderstorms 6 mph SW 32%
Sunday 86°F Mostly Sunny then Slight Chance Showers And Thunderstorms 5 to 10 mph SW 20%
Sunday Night 69°F Slight Chance Showers And Thunderstorms 9 mph SW 20%
Monday 87°F Chance Showers And Thunderstorms 8 to 13 mph SW 30%
Monday Night 69°F Chance Showers And Thunderstorms 6 to 9 mph SW 35%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for London, OH

Last spring frost
Apr 24
First fall frost
Oct 18
Growing season
175 days
Hardiness zone
6a

Explore more for London, OH: full frost dates · planting calendar · Ohio frost dates

Climate data from the nearest NOAA station, London Fish Hatchery, Oh (4.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.