UTC Offset
UTC-05:00
Crystal Lake, United States Snapshot 2026
Where is Crystal Lake?
Crystal Lake, United States
- Continent
- Americas
- Country
- United States
- City
- Crystal Lake
- Population
- 40.4K
- Elevation
- 279 m
- Coordinates
- 42.24°, -88.32°
Crystal Lake is a city in United States with a population of approximately 40.4K. Average temperatures range from -8°C (18°F) in January to 28°C (82°F) in July. The best time to visit is June, July, August, September, October. The city sits at an elevation of 279 m above sea level.
Time in Crystal Lake right now
Open full time & time zone page 17:04 04
Tuesday, June 16, 2026
IANA time zone
America/Chicago
Daylight saving
DST in effect
CST / CDT
Next DST change
November 1
backward -1h
Live weather in Crystal Lake
Daylight in Crystal Lake today
View full sunrise & sunset page Sunrise
Sunset
Day length
15h 15m
Climate normals for Crystal Lake
Long-term monthly averages based on historical data.
January
Poor 
February
Poor March
Poor April
Fair May
Good June best
Excellent July best
Excellent August best
Excellent September best
Excellent October best
Good November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | -1°C / -8°C | -5°C / -13°C | 8days (59 mm) Wet | 5h Fair | 74% Muggy | 2.2 Moderate | Poor | View Details |
| February | 2°C / -6°C | -2°C / -11°C | 7days (47 mm) Good | 6.9h Fair | 70% Muggy | 3.4 Moderate | Poor | View Details |
| March | 9°C / 0°C | 5°C / -5°C | 10days (85 mm) Wet | 7.6h Good | 68% Muggy | 4.4 Moderate | Poor | View Details |
| April | 14°C / 4°C | 12°C / 0°C | 13days (111 mm) Wet | 8.7h Good | 67% Muggy | 5.3 High | Fair | View Details |
| May | 20°C / 10°C | 20°C / 8°C | 13days (122 mm) Wet | 10h Excellent | 70% Muggy | 6.5 High | Good | View Details |
| June best | 26°C / 17°C | 28°C / 17°C | 12days (94 mm) Wet | 11.8h Excellent | 68% Muggy | 7.1 Very High | Excellent | View Details |
| July best | 28°C / 19°C | 30°C / 20°C | 11days (98 mm) Wet | 11.9h Excellent | 72% Muggy | 7 High | Excellent | View Details |
| August best | 27°C / 18°C | 29°C / 19°C | 10days (85 mm) Wet | 11.1h Excellent | 73% Muggy | 6.4 High | Excellent | View Details |
| September best | 24°C / 16°C | 25°C / 15°C | 9days (79 mm) Wet | 9.5h Good | 71% Muggy | 5.3 High | Excellent | View Details |
| October best | 17°C / 9°C | 15°C / 6°C | 9days (92 mm) Wet | 7.2h Good | 70% Muggy | 3.8 Moderate | Good | View Details |
| November | 9°C / 1°C | 5°C / -3°C | 7days (50 mm) Good | 6.1h Fair | 71% Muggy | 2.5 Moderate | Poor | View Details |
| December | 3°C / -4°C | -2°C / -9°C | 8days (52 mm) Wet | 5.1h Fair | 73% Muggy | 1.9 Low | Poor | View Details |
Monthly Temperatures
HighLow
Line chart showing monthly temperatures. Jan: -1°C / -8°C . Feb: 2°C / -6°C . Mar: 9°C / 0°C . Apr: 14°C / 4°C . May: 20°C / 10°C . Jun: 26°C / 17°C . Jul: 28°C / 19°C . Aug: 27°C / 18°C . Sep: 24°C / 16°C . Oct: 17°C / 9°C . Nov: 9°C / 1°C . Dec: 3°C / -4°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 59 mm. Feb: 47 mm. Mar: 85 mm. Apr: 111 mm. May: 122 mm. Jun: 94 mm. Jul: 98 mm. Aug: 85 mm. Sep: 79 mm. Oct: 92 mm. Nov: 50 mm. Dec: 52 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 74%. Feb: 70%. Mar: 68%. Apr: 67%. May: 70%. Jun: 68%. Jul: 72%. Aug: 73%. Sep: 71%. Oct: 70%. Nov: 71%. Dec: 73%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 19 km/h . Feb: 20 km/h . Mar: 21 km/h . Apr: 21 km/h . May: 18 km/h . Jun: 17 km/h . Jul: 15 km/h . Aug: 15 km/h . Sep: 16 km/h . Oct: 19 km/h . Nov: 20 km/h . Dec: 20 km/h .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 3. Mar: UV 4. Apr: UV 5. May: UV 7. Jun: UV 7. Jul: UV 7. Aug: UV 6. Sep: UV 5. Oct: UV 4. Nov: UV 3. Dec: UV 2.
Frequently Asked Questions
Crystal Lake has a population of approximately 40.4K.
The best months to visit Crystal Lake are June, July, August, September, October, when temperatures are pleasant and rainfall is lower.
Crystal Lake receives approximately 974mm of rainfall annually across 117 rainy days.
Crystal Lake is located in United States, in the Americas region.
Crystal Lake sits at an elevation of 279 m (915 ft) above sea level.