Harman US

London, OH Weather & Growing Conditions

Tonight
60°F
Mostly Cloudy then Chance Rain Showers
A chance of rain showers after 5am. Mostly cloudy, with a low around 60. Southeast wind 8 to 12 mph, with gusts as high as 23 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Tonight 60°F Mostly Cloudy then Chance Rain Showers 8 to 12 mph SE 44%
Wednesday 67°F Showers And Thunderstorms 13 to 16 mph S 100%
Wednesday Night 51°F Showers And Thunderstorms Likely then Mostly Cloudy 6 to 15 mph SW 72%
Thursday 64°F Mostly Sunny 6 to 13 mph SW 0%
Thursday Night 45°F Partly Cloudy 2 to 7 mph SW 1%
Friday 60°F Partly Sunny 2 to 8 mph NW 10%
Friday Night 39°F Slight Chance Light Rain 7 mph NW 17%
Saturday 54°F Slight Chance Light Rain 8 mph NW 15%
Saturday Night 35°F Partly Cloudy 2 to 6 mph W 9%
Sunday 56°F Mostly Sunny then Slight Chance Light Rain 3 to 9 mph W 15%
Sunday Night 34°F Slight Chance Light Rain then Partly Cloudy 8 mph W 15%
Monday 58°F Slight Chance Light Rain 6 to 12 mph W 19%
Monday Night 38°F Slight Chance Light Rain then Mostly Clear 10 mph W 16%
Tuesday 62°F Mostly Sunny 12 mph W 3%

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 Nov 4, 2026.