Barstow, IL Weather & Growing Conditions
Today
55°F
Slight Chance Rain Showers then Slight Chance Drizzle
A slight chance of rain showers before noon, then a slight chance of drizzle. Cloudy, with a high near 55. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 55°F | Slight Chance Rain Showers then Slight Chance Drizzle | 10 to 15 mph SW | 15% |
| Tonight | 48°F | Slight Chance Drizzle then Slight Chance Rain Showers | 10 to 15 mph SW | 15% |
| Thursday | 52°F | Chance Rain Showers | 10 to 15 mph W | 39% |
| Thursday Night | 41°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NW | 16% |
| Friday | 51°F | Partly Sunny | 5 to 10 mph N | 6% |
| Friday Night | 32°F | Mostly Clear | 0 to 5 mph N | 0% |
| Saturday | 52°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 34°F | Mostly Clear | 0 to 5 mph W | 2% |
| Sunday | 58°F | Sunny | 5 to 10 mph W | 2% |
| Sunday Night | 35°F | Clear | 0 to 5 mph W | 1% |
| Monday | 63°F | Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 64°F | Sunny | 5 mph NW | 0% |
| Tuesday Night | 40°F | Partly Cloudy | 0 mph | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Barstow, IL
Last spring frost
Apr 16
First fall frost
Oct 25
Growing season
190 days
Hardiness zone
5b
Explore more for Barstow, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Le Claire L&D 14, Ia (4.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.