Streator, IL Weather & Growing Conditions
Today
62°F
Slight Chance Rain Showers
A slight chance of drizzle before 11am, then a slight chance of rain showers and a slight chance of drizzle. Mostly cloudy. High near 62, with temperatures falling to around 56 in the afternoon. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 62°F | Slight Chance Rain Showers | 10 to 15 mph WSW | 13% |
| Tonight | 46°F | Slight Chance Rain Showers then Mostly Cloudy | 10 mph SW | 7% |
| Thursday | 57°F | Mostly Cloudy then Chance Rain | 10 to 15 mph WSW | 40% |
| Thursday Night | 40°F | Chance Rain then Mostly Cloudy | 5 to 10 mph NW | 34% |
| Friday | 50°F | Partly Sunny | 5 to 10 mph N | 3% |
| Friday Night | 33°F | Partly Cloudy | 0 to 5 mph NNW | 0% |
| Saturday | 53°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 34°F | Mostly Clear | 0 mph | 1% |
| Sunday | 57°F | Sunny | 0 to 5 mph W | 3% |
| Sunday Night | 34°F | Clear | 0 to 5 mph W | 0% |
| Monday | 63°F | Sunny | 0 to 5 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 0 to 5 mph WSW | 1% |
| Tuesday | 63°F | Sunny | 0 to 5 mph WNW | 1% |
| Tuesday Night | 39°F | Partly Cloudy | 0 mph | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Streator, IL
Last spring frost
Apr 12
First fall frost
Oct 28
Growing season
199 days
Hardiness zone
5b
Explore more for Streator, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Streator 3 Se, Il (3.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.