Crystal Lake, IL weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in Crystal Lake now
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Crystal Lake weather by the hour
Crystal Lake weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Crystal Lake.
This week in Crystal Lake
Sunrise, sunset and moon in Crystal Lake
What is the weather usually like in Crystal Lake?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 84°F average high
- Januarycoldest month · 14°F average low
- 39.4 inprecipitation per year · 1,000 mm
- 35.1 insnowfall per year · 89 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Crystal Lake: June to September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station CRYSTAL LAKE 4NW, IL US (USC00112048), adjusted for the elevation of Crystal Lake.
Crystal Lake weather month by month
Sunrise and sunset in Crystal Lake through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:17 AM | 4:47 PM | 9 h 30 min |
| February | 6:47 AM | 5:27 PM | 10 h 39 min |
| March | 7:03 AM | 7:01 PM | 11 h 57 min |
| April | 6:10 AM | 7:36 PM | 13 h 25 min |
| May | 5:30 AM | 8:09 PM | 14 h 38 min |
| June | 5:14 AM | 8:33 PM | 15 h 18 min |
| July | 5:29 AM | 8:29 PM | 15 h 0 min |
| August | 5:59 AM | 7:55 PM | 13 h 56 min |
| September | 6:32 AM | 7:04 PM | 12 h 32 min |
| October | 7:04 AM | 6:13 PM | 11 h 8 min |
| November | 6:42 AM | 4:33 PM | 9 h 50 min |
| December | 7:13 AM | 4:23 PM | 9 h 10 min |
Times for the 15th of each month, local time (America/Chicago).
What is the weather like in Crystal Lake?
Crystal Lake has a hot-summer humid continental climate. The warmest month is July, with an average high of 84°F (29°C), and the coldest is January, with average lows of 14°F (-10°C).
It gets about 39.4 inches (1,000 mm) of precipitation a year. The wettest month is June and the driest is February. Snow is common: about 35 inches fall in an average year.
The best time to visit Crystal Lake is June to September. At 942 ft of elevation, nights are mild most of the year. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
More about Crystal Lake
Weather in towns near Crystal Lake
Questions about the weather in Crystal Lake
What is the hottest month in Crystal Lake?
July, with an average high of 84°F (29°C).
What is the coldest month in Crystal Lake?
January, with an average low of 14°F (-10°C).
How much does it rain in Crystal Lake?
About 39.4 inches (1,000 mm) a year; the wettest month is June.
Does it snow in Crystal Lake?
Yes, about 35 inches of snow fall in an average year.
When is the best time to visit Crystal Lake?
June to September, when temperatures are most pleasant and rainy days are fewer.
What climate does Crystal Lake have?
Hot-summer humid continental (Köppen Dfa).
What is the weather like in Crystal Lake in November?
Highs average 47°F and lows 31°F, with about 2.5 inches of precipitation.
What time is sunrise in Crystal Lake?
Around 6:42 AM in mid-November, and sunset around 4:33 PM. Today’s exact times are shown above.
Where does this Crystal Lake weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of Crystal Lake.
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