London, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for London, a city in Madison County, Ohio.
Tonight
57°F
Partly Cloudy
Partly cloudy, with a low around 57. Northeast wind 3 to 8 mph.
7-day forecast for London
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Partly Cloudy | 3 to 8 mph NE | 2% |
| Saturday | 80°F | Patchy Fog then Chance Showers And Thunderstorms | 5 mph E | 32% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 6 mph S | 62% |
| Sunday | 80°F | Showers And Thunderstorms Likely | 8 mph W | 64% |
| Sunday Night | 59°F | Showers And Thunderstorms Likely | 9 to 13 mph NE | 64% |
| Monday | 72°F | Chance Showers And Thunderstorms | 12 mph NE | 54% |
| Monday Night | 56°F | Chance Showers And Thunderstorms | 13 mph NE | 48% |
| Tuesday | 71°F | Chance Rain Showers | 12 mph NE | 48% |
| Tuesday Night | 57°F | Chance Showers And Thunderstorms | 8 to 13 mph NE | 54% |
| Wednesday | 70°F | Chance Rain Showers | 10 mph NE | 54% |
| Wednesday Night | 55°F | Chance Rain Showers | 7 to 10 mph NE | 41% |
| Thursday | 71°F | Slight Chance Rain Showers then Mostly Cloudy | 9 mph N | 17% |
| Thursday Night | 54°F | Mostly Cloudy | 5 to 9 mph N | 13% |
| Friday | 71°F | Partly Sunny | 6 to 9 mph N | 10% |
Forecast source: National Weather Service (api.weather.gov) for London (39.893, -83.439). Updated through the day.
Growing snapshot for London
Last spring frost
Apr 24
First fall frost
Oct 18
Growing season
175 days
Hardiness zone
6a
More local growing data for London: nearby ZIP 43140 weather · frost dates · planting calendar · Ohio frost dates
Nearby towns & communities
Choctaw Lake
Lafayette
Midway
Mount Sterling
New California
Plain City
Plumwood
South Solon
West Jefferson
Climate data from the nearest NOAA station, London Fish Hatchery, Oh (4.5 mi from London). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.