Crystal Lake, IA Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Crystal Lake, IA in one place.
Showers and thunderstorms likely after 7am. Partly sunny. High near 74, with temperatures falling to around 60 in the afternoon. Southwest wind 18 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Local Weather Overview
This forecast page for Crystal Lake, IA 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 16, 2026 9:37 AM CDT.
The active forecast window currently covers Apr 17 to Apr 22, 2026 for Crystal Lake, IA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 17 to Apr 22, 2026
- Latest sync
- Apr 16, 2026 9:37 AM CDT
- Forecast office
- DMX
- Source
- NOAA / NWS
Daily Outlook
This Week in Crystal Lake
Friday looks like the warmest upcoming period in Crystal Lake at 74 degrees F.
Saturday Night is the coolest period ahead with temperatures near 28 degrees F.
The strongest winds are forecast for Friday Night at about 20 to 24 mph NW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 16, 2026 9:37 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- DMX
- Radar station
- KDMX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms likely before 4am, then a slight chance of snow showers. Partly cloudy. Low around 29, with temperatures rising to around 31 overnight. Northwest wind 20 to 24 mph, with gusts as high as 32 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
A slight chance of snow showers before 7am. Sunny, with a high near 47. Northwest wind 18 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Mostly clear, with a low around 28.
Sunny, with a high near 54.
Mostly clear, with a low around 32.
Sunny, with a high near 67.
Mostly clear, with a low around 47.
Sunny, with a high near 73.
Mostly clear, with a low around 47.
Sunny, with a high near 71.
A chance of rain showers after 7pm. Partly cloudy, with a low around 49.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Apr 17
|
Showers And Thunderstorms Likely
|
74°F |
18 to 23 mph
SW
|
|
Friday Night
Apr 17
|
Showers And Thunderstorms Likely then Slight Chance Snow Showers
|
29°F |
20 to 24 mph
NW
|
|
Saturday
Apr 18
|
Slight Chance Snow Showers then Sunny
|
47°F |
18 to 22 mph
NW
|
|
Saturday Night
Apr 18
|
Mostly Clear
|
28°F |
8 to 21 mph
WNW
|
|
Sunday
Apr 19
|
Sunny
|
54°F |
8 to 14 mph
NW
|
|
Sunday Night
Apr 19
|
Mostly Clear
|
32°F |
10 mph
ENE
|
|
Monday
Apr 20
|
Sunny
|
67°F |
12 to 20 mph
SSE
|
|
Monday Night
Apr 20
|
Mostly Clear
|
47°F |
15 to 18 mph
SSW
|
|
Tuesday
Apr 21
|
Sunny
|
73°F |
16 mph
WSW
|
|
Tuesday Night
Apr 21
|
Mostly Clear
|
47°F |
12 to 16 mph
SSW
|
|
Wednesday
Apr 22
|
Sunny
|
71°F |
12 to 17 mph
SSE
|
|
Wednesday Night
Apr 22
|
Chance Rain Showers
|
49°F |
17 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Crystal Lake.
