Hartsburg, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hartsburg, a village in Logan County, Illinois.
Overnight
63°F
Mostly Clear
Mostly clear, with a low around 63. Southeast wind around 3 mph.
7-day forecast for Hartsburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Mostly Clear | 3 mph SE | 0% |
| Tuesday | 86°F | Sunny | 6 mph S | 0% |
| Tuesday Night | 67°F | Partly Cloudy | 5 mph SSE | 3% |
| Wednesday | 85°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 7 mph S | 26% |
| Wednesday Night | 67°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 6 mph SSE | 79% |
| Thursday | 81°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 6 mph SSW | 79% |
| Thursday Night | 65°F | Slight Chance Showers And Thunderstorms | 1 to 5 mph S | 18% |
| Friday | 83°F | Mostly Sunny | 3 mph SSW | 7% |
| Friday Night | 66°F | Chance Showers And Thunderstorms | 2 mph S | 25% |
| Saturday | 86°F | Mostly Sunny | 3 to 7 mph SSW | 12% |
| Saturday Night | 70°F | Mostly Clear | 7 mph S | 10% |
| Sunday | 88°F | Sunny | 6 to 12 mph SSW | 7% |
| Sunday Night | 72°F | Partly Cloudy | 7 to 10 mph SSW | 14% |
| Monday | 89°F | Mostly Sunny | 7 to 10 mph SSW | 14% |
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 Aug 4, 2026.