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
October's arrival comes with a decrease in the average high-temperature, moving from a pleasant 72.5°F (22.5°C) in September to a refreshing 59°F (15°C). October's average low-temperature reading settles at a frosty 43.9°F (6.6°C).Humidity
April and October, with an average relative humidity of 76%, are the least humid months.Rainfall
In Crystal Lake, in October, it is raining for 12.9 days, with typically 1.73" (44mm) of accumulated precipitation. In Crystal Lake, 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. Throughout October, in the average 0.7 snowfall days, it receives 0.12" (3mm) of snow. In Crystal Lake, during the entire year, snow falls for 48.7 days and aggregates up to 11.85" (301mm) of snow.Daylight
The average length of the day in October is 11h and 3min.On the first day of October in Crystal Lake, 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, the average sunshine in October is 5.5h.UV index
The average daily maximum UV index in October is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: A daily high UV index of 2 in October leads to these guidelines:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are October temperatures?
What are the least humid months?
What is the average humidity in October?
How much does it rain in October?
When does it start snowing?
What is the average length of the day in October?
What time are sunrise and sunset in October?
How many hours of sunshine does Crystal Lake have in October?
What is the UV index reading in October?
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
Weather forecast for your location
2. Allow the app to use your location