Trout Valley, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Trout Valley, a village in Mchenry County, Illinois.
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
7-day forecast for Trout Valley
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 5 to 10 mph SW | 1% |
| Tonight | 67°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 50% |
| Wednesday | 78°F | Showers And Thunderstorms Likely | 0 to 5 mph WSW | 74% |
| Wednesday Night | 62°F | Showers And Thunderstorms | 0 to 5 mph WNW | 81% |
| Thursday | 78°F | Rain Showers Likely then Slight Chance Showers And Thunderstorms | 0 to 5 mph NNE | 55% |
| Thursday Night | 60°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph ENE | 16% |
| Friday | 81°F | Mostly Sunny | 0 to 5 mph S | 4% |
| Friday Night | 63°F | Mostly Clear | 0 to 5 mph SSW | 7% |
| Saturday | 83°F | Mostly Sunny | 0 to 5 mph SW | 11% |
| Saturday Night | 68°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SSW | 20% |
| Sunday | 84°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 20% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 45% |
| Monday | 83°F | Chance Showers And Thunderstorms | 5 mph SSW | 45% |
| Monday Night | 67°F | Chance Showers And Thunderstorms | 5 mph W | 46% |
Forecast source: National Weather Service (api.weather.gov) for Trout Valley (42.196, -88.251). Updated through the day.
Growing snapshot for Trout Valley
Last spring frost
May 1
First fall frost
Oct 11
Growing season
162 days
Hardiness zone
5b
More local growing data for Trout Valley: nearby ZIP 60013 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
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Lake Barrington
Lake in the Hills
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Marengo
McCullom Lake
McHenry
Oakwood Hills
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Ridgefield
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Solon Mills
Climate data from the nearest NOAA station, Mc Henry -Wg Stratton L&D, Il (6 mi from Trout Valley). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.