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
Welcoming October, Washington observes a shift in the average high-temperature, falling from September's warm 76.1°F (24.5°C) to an enjoyable 62.1°F (16.7°C). In October, Washington records an average nighttime temperature of 46.6°F (8.1°C).Humidity
October is the least humid month, with an average relative humidity of 71%.Rainfall
In October, the rain falls for 11 days. Throughout October, 1.61" (41mm) of precipitation is accumulated. Throughout the year, there are 128.3 rainfall days, and 19.13" (486mm) of precipitation is accumulated.Snowfall
In Washington, snow does not fall in May through October.Daylight
The average length of the day in October is 11h and 7min.On the first day of the month, sunrise is at 6:54 am and sunset at 6:39 pm. On the last day of October, sunrise is at 7:27 am and sunset at 5:54 pm CDT.
Sunshine
In Washington, the average sunshine in October is 5.8h.UV index
In Washington, the average daily maximum UV index in October is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 3 during October translates into the following guidance:
Make use of precautions - It is urged to ward off sun damage. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Stay sun-safe with clothing that is both closely woven and worn loosely. Consider this! The reflection from 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 Washington?
What is the least humid month in Washington?
What is the average humidity in October in Washington?
How many days does it rain in October in Washington?
When it does not snow in Washington?
Does it snow in Washington in October?
How many hours of daylight does Washington have in October?
When are sunrise and sunset in October in Washington?
How many hours of sunshine does Washington have in October?
What is the UV index intensity in October in Washington?
Average temperature in October
Washington, IL
- Average high temperature in October: 62.1°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in October: 46.6°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in October
Washington, IL
- Average pressure in October: 30.02"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in October
Washington, IL
- Average wind speed in October: 9.4mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in October
Washington, IL
- Average humidity in October: 71%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (71%).
Average rainfall in October
Washington, IL
- Average rainfall in October: 1.61"
The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is November (0.94").
Average rainfall days in October
Washington, IL
- Average rainfall days in October: 11 days
The month with the highest number of rainy days is July (16.4 days).
The month with the least rainy days is January (4.4 days).
Average snowfall in October
Washington, IL
- Average snowfall in October: 0"
The month with the highest snowfall is January (2.68").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in October
Washington, IL
- Average snowfall days in October: 0.2 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Washington, IL
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in October: 5h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in October
Washington, IL
- Average sunshine days in October: 18.1 days
The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in October
Washington, IL
- Average UV index in October: 3
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in October
Washington, IL
- Average cloud cover in October: 37
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in October
Washington, IL
- Average visibility in October: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Washington, Illinois, USA
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