Coal Valley, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Coal Valley, a village in Rock Island County, Illinois.
Tonight
66°F
Showers And Thunderstorms Likely
A chance of rain showers before 11pm, then showers and thunderstorms likely between 11pm and 1am, then showers and thunderstorms between 1am and 5am, then patchy fog and showers and thunderstorms likely. Mostly cloudy. Low around 66, with temperatures rising to around 69 overnight. Southeast wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
7-day forecast for Coal Valley
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 66°F | Showers And Thunderstorms Likely | 5 mph SE | 89% |
| Sunday | 69°F | Patchy Fog | 5 to 15 mph NE | 72% |
| Sunday Night | 57°F | Chance Rain Showers | 10 to 15 mph NE | 49% |
| Monday | 63°F | Rain Showers Likely | 15 mph NE | 68% |
| Monday Night | 53°F | Rain Showers Likely | 10 to 15 mph NE | 64% |
| Tuesday | 62°F | Rain Showers Likely | 10 to 15 mph NE | 56% |
| Tuesday Night | 50°F | Mostly Cloudy | 5 to 10 mph NE | 6% |
| Wednesday | 64°F | Partly Sunny | 5 to 10 mph NE | 5% |
| Wednesday Night | 52°F | Partly Cloudy | 5 to 10 mph NE | 5% |
| Thursday | 67°F | Partly Sunny | 5 mph NE | 5% |
| Thursday Night | 56°F | Slight Chance Rain Showers | 0 to 5 mph NE | 15% |
| Friday | 71°F | Partly Sunny | 0 to 5 mph NE | 12% |
| Friday Night | 55°F | Partly Cloudy | 0 to 5 mph NE | 8% |
| Saturday | 72°F | Mostly Sunny | 0 to 5 mph E | 5% |
Forecast source: National Weather Service (api.weather.gov) for Coal Valley (41.438, -90.439). Updated through the day.
Growing snapshot for Coal Valley
Last spring frost
Apr 24
First fall frost
Oct 18
Growing season
176 days
Hardiness zone
5b
More local growing data for Coal Valley: nearby ZIP 61240 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Moline Quad City Intl Ap, Il (5.3 mi from Coal Valley). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.