Latham, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Latham, a village in Logan County, Illinois.
Tonight
54°F
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy, with a low around 54. South wind 14 to 20 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Latham
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Showers And Thunderstorms | 14 to 20 mph S | 96% |
| Wednesday | 61°F | Chance Rain Showers then Mostly Cloudy | 13 to 17 mph SW | 18% |
| Wednesday Night | 44°F | Mostly Cloudy | 12 mph SW | 1% |
| Thursday | 61°F | Mostly Sunny | 10 to 16 mph WSW | 5% |
| Thursday Night | 42°F | Mostly Cloudy then Slight Chance Light Rain | 5 to 8 mph WNW | 21% |
| Friday | 55°F | Mostly Cloudy | 7 to 13 mph NNW | 14% |
| Friday Night | 36°F | Mostly Cloudy | 2 to 10 mph NNW | 6% |
| Saturday | 54°F | Mostly Sunny | 2 to 6 mph NW | 1% |
| Saturday Night | 33°F | Partly Cloudy | 3 mph W | 2% |
| Sunday | 60°F | Sunny | 2 to 10 mph W | 10% |
| Sunday Night | 34°F | Mostly Clear | 3 to 8 mph WNW | 6% |
| Monday | 64°F | Sunny | 3 to 13 mph SW | 3% |
| Monday Night | 39°F | Mostly Clear | 5 to 9 mph WSW | 2% |
| Tuesday | 66°F | Sunny | 5 to 8 mph WNW | 0% |
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 Nov 4, 2026.