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.
Today
77°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 1pm, then a chance of showers and thunderstorms between 1pm and 2pm, then showers and thunderstorms. Mostly cloudy. High near 77, with temperatures falling to around 74 in the afternoon. Southwest wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Coal Valley
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Showers And Thunderstorms Likely | 5 to 10 mph SW | 86% |
| Tonight | 63°F | Chance Showers And Thunderstorms then Mostly Cloudy | 0 to 5 mph N | 49% |
| Thursday | 80°F | Mostly Sunny | 0 to 5 mph NE | 4% |
| Thursday Night | 64°F | Mostly Clear | 0 to 5 mph E | 2% |
| Friday | 82°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 15% |
| Friday Night | 68°F | Slight Chance Showers And Thunderstorms | 5 mph SW | 24% |
| Saturday | 84°F | Sunny | 5 mph W | 9% |
| Saturday Night | 69°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 5 mph S | 24% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 25% |
| Sunday Night | 71°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 40% |
| Monday | 85°F | Chance Showers And Thunderstorms | 10 to 15 mph S | 40% |
| Monday Night | 70°F | Chance Showers And Thunderstorms | 5 to 10 mph W | 38% |
| Tuesday | 82°F | Chance Showers And Thunderstorms | 5 to 10 mph N | 38% |
| Tuesday Night | 67°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph NE | 40% |
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 Aug 5, 2026.