Harman US

Longview, IL Weather & Growing Conditions

Overnight
68°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before 5am. Mostly cloudy, with a low around 68. Southeast wind around 6 mph. Chance of precipitation is 20%.

7-day forecast

WhenTempForecastWindPrecip
Overnight 68°F Slight Chance Showers And Thunderstorms 6 mph SE 16%
Saturday 89°F Chance Showers And Thunderstorms 5 to 8 mph SSE 39%
Saturday Night 69°F Mostly Cloudy then Slight Chance Showers And Thunderstorms 6 mph S 15%
Sunday 83°F Chance Showers And Thunderstorms 3 to 10 mph N 53%
Sunday Night 59°F Chance Showers And Thunderstorms 14 mph NE 62%
Monday 69°F Showers And Thunderstorms Likely 15 mph NE 71%
Monday Night 54°F Chance Rain Showers 12 to 16 mph NE 49%
Tuesday 67°F Chance Showers And Thunderstorms 14 mph NE 27%
Tuesday Night 52°F Chance Showers And Thunderstorms then Mostly Cloudy 7 to 14 mph NNE 27%
Wednesday 70°F Mostly Sunny 10 mph NNE 6%
Wednesday Night 53°F Partly Cloudy 5 to 9 mph NNE 6%
Thursday 71°F Partly Sunny 8 mph NNE 2%
Thursday Night 54°F Partly Cloudy 7 mph NNE 2%
Friday 74°F Mostly Sunny 6 to 9 mph NNE 2%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Longview, IL

Last spring frost
Apr 15
First fall frost
Oct 20
Growing season
188 days
Hardiness zone
6a

Explore more for Longview, IL: full frost dates · planting calendar · Illinois frost dates

Climate data from the nearest NOAA station, Tuscola, Il (13.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.