Triumph, IL Weather & Growing Conditions
Overnight
66°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Cloudy, with a low around 66. East southeast wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 66°F | Showers And Thunderstorms Likely | 10 mph ESE | 62% |
| Saturday | 81°F | Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph ESE | 88% |
| Saturday Night | 65°F | Showers And Thunderstorms Likely then Showers And Thunderstorms | 5 mph S | 94% |
| Sunday | 71°F | Showers And Thunderstorms Likely | 10 to 15 mph NNE | 66% |
| Sunday Night | 57°F | Chance Showers And Thunderstorms | 15 mph NE | 45% |
| Monday | 65°F | Rain Showers Likely | 15 mph ENE | 55% |
| Monday Night | 52°F | Chance Rain Showers | 10 to 15 mph NE | 31% |
| Tuesday | 63°F | Slight Chance Rain Showers | 15 mph NE | 18% |
| Tuesday Night | 51°F | Partly Cloudy | 10 to 15 mph NNE | 13% |
| Wednesday | 67°F | Mostly Sunny | 10 to 15 mph NNE | 4% |
| Wednesday Night | 52°F | Partly Cloudy | 5 to 10 mph NNE | 1% |
| Thursday | 69°F | Mostly Sunny | 5 to 10 mph NNE | 3% |
| Thursday Night | 53°F | Partly Cloudy | 5 mph NE | 3% |
| Friday | 72°F | Mostly Sunny | 5 mph NE | 2% |
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 Sep 19, 2026.