Hartford, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hartford, a village in Madison County, Illinois.
Tonight
73°F
Partly Cloudy
Partly cloudy, with a low around 73. Southeast wind around 6 mph.
7-day forecast for Hartford
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 73°F | Partly Cloudy | 6 mph SE | 9% |
| Saturday | 98°F | Mostly Sunny | 3 to 8 mph SW | 6% |
| Saturday Night | 73°F | Partly Cloudy | 5 mph S | 3% |
| Sunday | 93°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 2 to 8 mph W | 23% |
| Sunday Night | 67°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 6 to 9 mph N | 62% |
| Monday | 81°F | Rain Showers Likely | 6 to 13 mph N | 70% |
| Monday Night | 60°F | Showers And Thunderstorms Likely | 7 to 13 mph N | 70% |
| Tuesday | 72°F | Chance Rain Showers then Mostly Cloudy | 9 to 13 mph N | 27% |
| Tuesday Night | 54°F | Mostly Cloudy | 6 to 13 mph N | 5% |
| Wednesday | 76°F | Mostly Sunny | 7 to 10 mph N | 2% |
| Wednesday Night | 55°F | Partly Cloudy | 3 to 9 mph N | 2% |
| Thursday | 77°F | Mostly Sunny | 3 to 8 mph N | 3% |
| Thursday Night | 57°F | Partly Cloudy | 3 to 7 mph NE | 3% |
| Friday | 77°F | Mostly Sunny | 3 to 8 mph NE | 6% |
Forecast source: National Weather Service (api.weather.gov) for Hartford (38.813, -90.092). Updated through the day.
Growing snapshot for Hartford
Last spring frost
Apr 4
First fall frost
Nov 5
Growing season
214 days
Hardiness zone
7a
More local growing data for Hartford: nearby ZIP 62087 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Alhambra
Alton
Bethalto
Collinsville
East Alton
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Godfrey
Granite City
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Highland
Holiday Shores
Livingston
Madison
Marine
Maryville
Mitchell
Moro
New Douglas
Pontoon Beach
Prairietown
Rosewood Heights
Roxana
South Roxana
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Troy
Venice
Williamson
Wood River
Climate data from the nearest NOAA station, Alton - Melvin Price L&D, Il (5.5 mi from Hartford). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.