Hartford, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hartford, a village in Madison County, Illinois.
This Afternoon
73°F
Rain
Rain and a slight chance of thunderstorms. Cloudy. High near 73, with temperatures falling to around 68 in the afternoon. South wind 18 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 90%.
7-day forecast for Hartford
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Rain | 18 to 22 mph S | 92% |
| Tonight | 54°F | Rain | 8 to 18 mph S | 95% |
| Wednesday | 64°F | Chance Rain Showers then Mostly Cloudy | 8 to 14 mph SW | 12% |
| Wednesday Night | 44°F | Partly Cloudy | 3 to 7 mph SW | 0% |
| Thursday | 66°F | Sunny | 5 to 12 mph W | 1% |
| Thursday Night | 44°F | Mostly Cloudy | 6 mph NW | 8% |
| Friday | 59°F | Mostly Cloudy | 6 to 12 mph NW | 6% |
| Friday Night | 39°F | Partly Cloudy | 2 to 7 mph N | 1% |
| Saturday | 57°F | Mostly Sunny | 5 mph NW | 0% |
| Saturday Night | 36°F | Partly Cloudy | 2 mph NW | 0% |
| Sunday | 63°F | Sunny | 1 to 8 mph W | 8% |
| Sunday Night | 36°F | Mostly Clear | 5 mph W | 5% |
| Monday | 67°F | Sunny | 2 to 8 mph W | 2% |
| Monday Night | 41°F | Mostly Clear | 5 mph SW | 1% |
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
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Madison
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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 Nov 3, 2026.