Crystal Lake, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Crystal Lake, IL in one place.
Showers and thunderstorms likely. Mostly cloudy, with a high near 75.
Local Weather Overview
This forecast page for Crystal Lake, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 9, 2026 3:16 PM CDT.
The active forecast window currently covers Apr 14 to Apr 15, 2026 for Crystal Lake, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 14 to Apr 15, 2026
- Latest sync
- Apr 9, 2026 3:16 PM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Crystal Lake
Tuesday looks like the warmest upcoming period in Crystal Lake at 75 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 43 degrees F.
The strongest winds are forecast for Tuesday at about 15 mph SW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 3:16 PM CDT
- Coverage
- 2 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KLOT
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms. Mostly cloudy, with a low around 48.
Showers and thunderstorms likely. Mostly cloudy, with a high near 63.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 43.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Apr 14
|
Showers And Thunderstorms Likely
|
75°F |
15 mph
SW
|
|
Tuesday Night
Apr 14
|
Showers And Thunderstorms
|
48°F |
15 mph
SSE
|
|
Wednesday
Apr 15
|
Showers And Thunderstorms Likely
|
63°F |
15 mph
S
|
|
Wednesday Night
Apr 15
|
Chance Showers And Thunderstorms
|
43°F |
10 to 15 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Crystal Lake.
