Tamms, IL Weather & Growing Conditions
This Afternoon
78°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy. High near 78, with temperatures falling to around 73 in the afternoon. South wind around 8 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 78°F | Chance Showers And Thunderstorms | 8 mph S | 46% |
| Tonight | 56°F | Showers And Thunderstorms | 6 to 13 mph SSW | 96% |
| Wednesday | 68°F | Partly Sunny | 3 to 9 mph SW | 7% |
| Wednesday Night | 44°F | Mostly Clear | 2 mph WSW | 0% |
| Thursday | 69°F | Sunny | 1 to 6 mph SW | 0% |
| Thursday Night | 46°F | Partly Cloudy | 2 mph WNW | 4% |
| Friday | 62°F | Partly Sunny | 2 to 8 mph NNW | 1% |
| Friday Night | 40°F | Partly Cloudy | 5 mph NNW | 1% |
| Saturday | 58°F | Mostly Sunny | 5 mph N | 0% |
| Saturday Night | 36°F | Partly Cloudy | 1 mph NNW | 1% |
| Sunday | 62°F | Sunny | 0 to 5 mph NW | 5% |
| Sunday Night | 36°F | Mostly Clear | 2 mph NW | 5% |
| Monday | 65°F | Sunny | 1 to 6 mph W | 1% |
| Monday Night | 38°F | Mostly Clear | 2 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Tamms, IL
Last spring frost
Apr 3
First fall frost
Nov 5
Growing season
216 days
Hardiness zone
7a
Explore more for Tamms, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Grand Chain Dam 53, Il (14 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.