Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
As September transitions into October, Crystal Lake sees a drop in the average high-temperature, transitioning from a pleasant 72.5°F (22.5°C) to a mild 59°F (15°C). Crystal Lake's nighttime temperature in October falls to an average of 43.9°F (6.6°C).Humidity
The months with the lowest humidity are April and October, with an average relative humidity of 76%.Rainfall
In Crystal Lake, during October, the rain falls for 12.9 days and regularly aggregates up to 1.73" (44mm) of precipitation. In Crystal Lake, Illinois, during the entire year, the rain falls for 146.9 days and collects up to 21.22" (539mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. October is the first month it typically snows in Crystal Lake. Throughout October, in the average 0.7 snowfall days, it receives 0.12" (3mm) of snow. Throughout the year, in Crystal Lake, there are 48.7 snowfall days, and 11.85" (301mm) of snow is accumulated.Daylight
The average length of the day in October is 11h and 3min.On the first day of October, sunrise is at 6:51 am and sunset at 6:34 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 5:47 pm CDT.
Sunshine
In Crystal Lake, Illinois, the average sunshine in October is 5.5h.UV index
In Crystal Lake, the average daily maximum UV index in October is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The average daily UV index of 2 in October transforms into the following instructions:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Frequently asked questions
What is the average October temperature in Crystal Lake?
What are the least humid months in Crystal Lake?
What is the average humidity in October in Crystal Lake?
How much does it rain in Crystal Lake in October?
When does it start snowing in Crystal Lake?
How many hours of daylight does Crystal Lake have in October?
What time are sunrise and sunset in October in Crystal Lake?
How long on average sun shines in October in Crystal Lake?
How high is the UV index in October in Crystal Lake?
Average temperature in October
Crystal Lake, IL
- Average high temperature in October: 59°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 October: 43.9°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 October
Crystal Lake, IL
- Average pressure in October: 30"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 October
Crystal Lake, IL
- Average wind speed in October: 8.7mph
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 October
Crystal Lake, IL
- Average humidity in October: 76%
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 October
Crystal Lake, IL
- Average rainfall in October: 1.73"
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 October
Crystal Lake, IL
- Average rainfall days in October: 12.9 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 October
Crystal Lake, IL
- Average snowfall in October: 0.12"
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 October
Crystal Lake, IL
- Average snowfall days in October: 0.7 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 October /
Average sunshine in October
Crystal Lake, IL
- Average daylight in October: 11h and 1min
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 October: 5h and 3min
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 October
Crystal Lake, IL
- Average sunshine days in October: 15.4 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 October
Crystal Lake, IL
- Average UV index in October: 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 October
Crystal Lake, IL
- Average cloud cover in October: 43
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 October
Crystal Lake, IL
- Average visibility in October: 6mi
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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