Triumph, IL Weather & Growing Conditions
Tonight
57°F
Rain
Rain. Cloudy. Low around 57, with temperatures rising to around 60 overnight. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Rain | 15 mph S | 90% |
| Wednesday | 60°F | Chance Rain then Mostly Cloudy | 15 mph SSW | 38% |
| Wednesday Night | 47°F | Slight Chance Rain Showers then Mostly Cloudy | 15 mph SW | 16% |
| Thursday | 56°F | Chance Rain Showers | 10 to 15 mph WSW | 46% |
| Thursday Night | 43°F | Chance Rain Showers | 5 to 10 mph NW | 37% |
| Friday | 52°F | Slight Chance Rain Showers then Partly Sunny | 10 mph N | 18% |
| Friday Night | 35°F | Partly Cloudy | 0 to 5 mph NNW | 2% |
| Saturday | 52°F | Mostly Sunny | 0 to 5 mph WNW | 3% |
| Saturday Night | 35°F | Partly Cloudy | 0 to 5 mph WSW | 4% |
| Sunday | 57°F | Mostly Sunny | 5 to 10 mph W | 13% |
| Sunday Night | 35°F | Mostly Clear | 5 mph WNW | 5% |
| Monday | 62°F | Sunny | 5 to 10 mph WSW | 3% |
| Monday Night | 40°F | Mostly Clear | 5 mph W | 1% |
| Tuesday | 62°F | Sunny | 5 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Triumph, IL
Last spring frost
Apr 24
First fall frost
Oct 18
Growing season
176 days
Explore more for Triumph, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Peru, Il (11.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.