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
Transition from September to October is accompanied by a temperature drop, with average high-temperatures decreasing from an agreeable 72.3°F (22.4°C) to a refreshing 58.6°F (14.8°C). Throughout the month of October, McHenry reports a steady low-temperature average of 43.9°F (6.6°C).Humidity
The least humid month in McHenry is October, with an average relative humidity of 76%.Rainfall
In McHenry, in October, during 14 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. In McHenry, during the entire year, the rain falls for 152.4 days and collects up to 28.07" (713mm) of precipitation.Snowfall
Months with snowfall in McHenry are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 0.5 snowfall days, it receives 0.08" (2mm) of snow. In McHenry, Illinois, during the entire year, snow falls for 49 days and aggregates up to 16.5" (419mm) of snow.Daylight
In October, the average length of the day in McHenry is 11h and 3min.On the first day of October in McHenry, sunrise is at 6:50 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 McHenry, the average sunshine in October is 5.5h.UV index
The average daily maximum UV index in October in McHenry, Illinois, is 2. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 2 during October leads to these instructions:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are October temperatures in McHenry?
What is the least humid month in McHenry?
What is the average humidity in October in McHenry?
How many days does it rain in October in McHenry?
When does it start snowing in McHenry?
How many hours of daylight does McHenry have in October?
What time are sunrise and sunset in October in McHenry?
How many hours of sunshine does McHenry have in October?
What is the UV index reading in October in McHenry?
Average temperature in October
McHenry, IL
- Average high temperature in October: 58.6°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (26.6°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 (14.9°F).
Average pressure in October
McHenry, 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
McHenry, IL
- Average wind speed in October: 8.8mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in October
McHenry, IL
- Average humidity in October: 76%
The months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is October (76%).
Average rainfall in October
McHenry, IL
- Average rainfall in October: 2.52"
The wettest month (with the highest rainfall) is June (3.58").
The driest month (with the least rainfall) is December (1.34").
Average rainfall days in October
McHenry, IL
- Average rainfall days in October: 14 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in October
McHenry, IL
- Average snowfall in October: 0.08"
The month with the highest snowfall is January (5.16").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
McHenry, IL
- Average snowfall days in October: 0.5 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
McHenry, IL
- Average daylight in October: 11h and 0min
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 6min).
- Average sunshine in October: 5h and 3min
The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in October
McHenry, IL
- Average sunshine days in October: 14.5 days
The month with the most sunshine days is November (16 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in October
McHenry, 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
McHenry, 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 August and September (Cloud cover 31).
Average visibility in October
McHenry, IL
- Average visibility in October: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
McHenry, Illinois, USA
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