London Mills, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for London Mills, a village in Fulton County, Illinois.
Today
89°F
Mostly Sunny
Mostly sunny, with a high near 89. South wind 2 to 7 mph.
7-day forecast for London Mills
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Mostly Sunny | 2 to 7 mph S | 0% |
| Tonight | 67°F | Partly Cloudy then Chance Showers And Thunderstorms | 3 mph SSE | 32% |
| Wednesday | 84°F | Chance Showers And Thunderstorms | 1 to 5 mph S | 60% |
| Wednesday Night | 64°F | Showers And Thunderstorms | 1 to 5 mph N | 85% |
| Thursday | 82°F | Showers And Thunderstorms Likely | 2 mph ESE | 74% |
| Thursday Night | 63°F | Partly Cloudy | 1 mph NNE | 8% |
| Friday | 84°F | Mostly Sunny | 0 mph | 9% |
| Friday Night | 65°F | Mostly Clear | 0 mph | 14% |
| Saturday | 87°F | Sunny | 0 to 5 mph SW | 12% |
| Saturday Night | 70°F | Mostly Clear | 1 to 5 mph S | 9% |
| Sunday | 89°F | Sunny | 5 to 10 mph SSW | 8% |
| Sunday Night | 70°F | Partly Cloudy then Chance Showers And Thunderstorms | 3 to 8 mph SSW | 25% |
| Monday | 89°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 to 8 mph SSW | 25% |
| Monday Night | 70°F | Slight Chance Showers And Thunderstorms | 7 mph SW | 29% |
Forecast source: National Weather Service (api.weather.gov) for London Mills (40.711, -90.266). Updated through the day.
Growing snapshot for London Mills
Last spring frost
Apr 22
First fall frost
Oct 19
Growing season
177 days
Hardiness zone
5b
More local growing data for London Mills: nearby ZIP 61544 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Avon, Il (11.3 mi from London Mills). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.