Harman US

Longview, IL Weather & Growing Conditions

This Afternoon
84°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Mostly sunny. High near 84, with temperatures falling to around 71 in the afternoon. East northeast wind around 9 mph. Chance of precipitation is 20%. New rainfall amounts between a quarter and half of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 84°F Slight Chance Showers And Thunderstorms 9 mph ENE 19%
Tonight 67°F Partly Cloudy 6 to 9 mph ESE 11%
Saturday 89°F Chance Showers And Thunderstorms 9 mph S 37%
Saturday Night 69°F Slight Chance Showers And Thunderstorms 5 to 8 mph S 21%
Sunday 85°F Chance Showers And Thunderstorms 3 to 10 mph NW 43%
Sunday Night 60°F Showers And Thunderstorms Likely 9 to 14 mph NE 61%
Monday 72°F Showers And Thunderstorms Likely 12 to 15 mph NE 67%
Monday Night 55°F Chance Showers And Thunderstorms 10 to 16 mph NE 54%
Tuesday 69°F Chance Showers And Thunderstorms 14 mph NE 34%
Tuesday Night 53°F Mostly Cloudy 6 to 14 mph NNE 14%
Wednesday 71°F Partly Sunny 10 mph NNE 2%
Wednesday Night 53°F Mostly Cloudy 5 to 10 mph NNE 2%
Thursday 73°F Mostly Sunny 5 to 8 mph N 3%
Thursday Night 54°F Partly Cloudy 7 mph NNE 3%

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.