Hartsburg, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hartsburg, a village in Logan County, Illinois.
Overnight
56°F
Slight Chance Light Rain
A slight chance of rain before 5am. Mostly cloudy, with a low around 56. South southwest wind around 12 mph, with gusts as high as 23 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Hartsburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 56°F | Slight Chance Light Rain | 12 mph SSW | 20% |
| Wednesday | 59°F | Patchy Drizzle | 14 mph SW | 11% |
| Wednesday Night | 46°F | Patchy Drizzle then Mostly Cloudy | 12 mph SW | 10% |
| Thursday | 59°F | Mostly Cloudy then Slight Chance Light Rain | 10 to 14 mph W | 16% |
| Thursday Night | 43°F | Slight Chance Light Rain | 6 to 9 mph NW | 21% |
| Friday | 53°F | Partly Sunny | 12 mph N | 6% |
| Friday Night | 32°F | Partly Cloudy | 2 to 8 mph NNW | 0% |
| Saturday | 53°F | Sunny | 2 to 6 mph NNW | 0% |
| Saturday Night | 32°F | Mostly Clear | 3 mph WNW | 1% |
| Sunday | 59°F | Sunny | 2 to 9 mph W | 1% |
| Sunday Night | 34°F | Clear | 5 mph WSW | 1% |
| Monday | 64°F | Sunny | 2 to 8 mph SW | 0% |
| Monday Night | 39°F | Clear | 6 mph SW | 0% |
| Tuesday | 67°F | Sunny | 6 mph WNW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Hartsburg (40.251, -89.441). Updated through the day.
Growing snapshot for Hartsburg
Last spring frost
Apr 20
First fall frost
Oct 16
Growing season
179 days
Hardiness zone
6a
More local growing data for Hartsburg: nearby ZIP 62643 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Atlanta
Beason
Broadwell
Chestnut
Cornland
Elkhart
Emden
Latham
Lincoln
Middletown
Mount Pulaski
New Holland
Climate data from the nearest NOAA station, Lincoln, Il (8.8 mi from Hartsburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.