Harman US

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

WhenTempForecastWindPrecip
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.