Latham, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Latham, a village in Logan County, Illinois.
Overnight
70°F
Partly Cloudy
Partly cloudy, with a low around 70. South southeast wind around 7 mph.
7-day forecast for Latham
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 70°F | Partly Cloudy | 7 mph SSE | 9% |
| Saturday | 89°F | Slight Chance Showers And Thunderstorms | 7 mph S | 16% |
| Saturday Night | 69°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 6 mph SSW | 24% |
| Sunday | 82°F | Chance Showers And Thunderstorms | 3 to 13 mph N | 52% |
| Sunday Night | 60°F | Chance Showers And Thunderstorms | 16 mph NE | 63% |
| Monday | 69°F | Showers And Thunderstorms Likely | 17 mph NE | 69% |
| Monday Night | 54°F | Chance Rain Showers | 16 mph NE | 49% |
| Tuesday | 67°F | Slight Chance Rain Showers | 17 mph NE | 21% |
| Tuesday Night | 52°F | Mostly Cloudy | 8 to 15 mph NNE | 14% |
| Wednesday | 70°F | Mostly Sunny | 13 mph NNE | 2% |
| Wednesday Night | 53°F | Partly Cloudy | 6 to 12 mph NNE | 2% |
| Thursday | 72°F | Mostly Sunny | 6 to 10 mph NNE | 2% |
| Thursday Night | 55°F | Mostly Cloudy | 5 to 10 mph NNE | 2% |
| Friday | 75°F | Mostly Sunny | 6 to 10 mph NE | 2% |
Forecast source: National Weather Service (api.weather.gov) for Latham (39.967, -89.162). Updated through the day.
Growing snapshot for Latham
Last spring frost
Apr 14
First fall frost
Oct 24
Growing season
192 days
Hardiness zone
6a
More local growing data for Latham: nearby ZIP 62543 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Atlanta
Beason
Broadwell
Chestnut
Cornland
Elkhart
Emden
Hartsburg
Lincoln
Middletown
Mount Pulaski
New Holland
Climate data from the nearest NOAA station, Decatur Wtp, Il (14.5 mi from Latham). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.