Contents
- Weather in February
- Frequently asked questions
- Average temperature in February
- Average pressure in February
- Average wind speed in February
- Average humidity in February
- Average rainfall in February
- Average rainfall days in February
- Average snowfall in February
- Average snowfall days in February
- Average daylight in February
- Average sunshine in February
- Average sunshine days in February
- Average UV index in February
- Average cloud cover in February
- Average visibility in February
Weather in February
Temperature
Crystal Lake marks the onset of February with an average high-temperature of a still subzero cold 30.6°F (-0.8°C), subtly divergent from January's 27°F (-2.8°C). Crystal Lake's nighttime temperature during February is consistently averaged at a still subzero cold 18°F (-7.8°C).Humidity
January and February, with an average relative humidity of 85%, are the most humid months.Rainfall
In Crystal Lake, in February, during 4.8 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. Throughout the year, there are 146.9 rainfall days, and 21.22" (539mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Crystal Lake, in February, during 10.7 snowfall days, 2.52" (64mm) of snow is typically accumulated. In Crystal Lake, during the entire year, snow falls for 48.7 days and aggregates up to 11.85" (301mm) of snow.Daylight
In Crystal Lake, the average length of the day in February is 10h and 36min.On the first day of the month, sunrise is at 7:06 am and sunset at 5:06 pm. On the last day of February, sunrise is at 6:28 am and sunset at 5:42 pm CST.
Sunshine
The average sunshine in February is 3.8h.UV index
The average daily maximum UV index in February is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: A daily maximum UV index of 2 in February translates into the following instructions:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is February in Crystal Lake?
What is the most humid month?
What is the average humidity in February?
How much does it rain in February?
How much does it snow in Crystal Lake in February?
How many hours of daylight does Crystal Lake have in February?
When is the sunrise / sunset in February?
How many hours of sunshine does Crystal Lake have in February?
What is the UV index intensity in February?
Average temperature in February
Crystal Lake, IL
- Average high temperature in February: 30.6°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in February: 18°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in February
Crystal Lake, IL
- Average pressure in February: 30.1"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in February
Crystal Lake, IL
- Average wind speed in February: 9.9mph
The windiest months (with the highest average wind speed) are January and February (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in February
Crystal Lake, IL
- Average humidity in February: 85%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are April and October (76%).
Average rainfall in February
Crystal Lake, IL
- Average rainfall in February: 1.1"
The wettest month (with the highest rainfall) is June (2.8").
The driest months (with the least rainfall) are November and December (0.94").
Average rainfall days in February
Crystal Lake, IL
- Average rainfall days in February: 4.8 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in February
Crystal Lake, IL
- Average snowfall in February: 2.52"
The month with the highest snowfall is January (3.31").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in February
Crystal Lake, IL
- Average snowfall days in February: 10.7 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in February /
Average sunshine in February
Crystal Lake, IL
- Average daylight in February: 10h and 4min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in February: 3h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in February
Crystal Lake, IL
- Average sunshine days in February: 12.3 days
The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is July (10 days).
Average UV index in February
Crystal Lake, IL
- Average UV index in February: 2
The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in February
Crystal Lake, IL
- Average cloud cover in February: 59
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July and September (Cloud cover 32).
Average visibility in February
Crystal Lake, IL
- Average visibility in February: 5mi
The months with the highest visibility are March, April, May, June, July, September, October, November and December (6mi).
The months with the lowest visibility are January, February and August (5mi).
Crystal Lake, Illinois, USA
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