October weather forecastThornton, WA
October
Weather in October
October, the same as September, in Thornton, Washington, is another mild autumn month, with an average temperature fluctuating between 42.1°F (5.6°C) and 57.6°F (14.2°C).Temperature
The shift into October is marked by a noticeable reduction in the average high-temperature, decreasing from September's agreeable 73.2°F (22.9°C) to a moderate 57.6°F (14.2°C). Throughout October, the average low-temperature records at a wintry 42.1°F (5.6°C).Humidity
In October, the average relative humidity is 61%.Rainfall
In Thornton, during October, the rain falls for 11.3 days and regularly aggregates up to 1.26" (32mm) of precipitation. Throughout the year, there are 120.2 rainfall days, and 14.69" (373mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. In Thornton, in October, during 0.3 snowfall days, 0.04" (1mm) of snow is typically accumulated. Throughout the year, there are 39.6 snowfall days, and 22.68" (576mm) of snow is accumulated.Daylight
In Thornton, Washington, the average length of the day in October is 10h and 51min.On the first day of the month, sunrise is at 6:49 am and sunset at 6:28 pm. On the last day of October, sunrise is at 7:32 am and sunset at 5:34 pm PDT.
Sunshine
In October, the average sunshine is 6.8h.UV index
In October, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index, 3 in October, converts into the following recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Thornton, WA
- Average high temperature in October: 57.6°F
The warmest month (with the highest average high temperature) is August (83.5°F).
The month with the lowest average high temperature is December (34.7°F).
- Average low temperature in October: 42.1°F
The month with the highest average low temperature is August (60.4°F).
The coldest month (with the lowest average low temperature) is December (24.6°F).
Average pressure in October
Thornton, WA
- Average pressure in October: 30.04"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in October
Thornton, WA
- Average wind speed in October: 6.6mph
The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in October
Thornton, WA
- Average humidity in October: 61%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (37%).
Average rainfall in October
Thornton, WA
- Average rainfall in October: 1.26"
The wettest month (with the highest rainfall) is December (1.93").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in October
Thornton, WA
- Average rainfall days in October: 11.3 days
The month with the highest number of rainy days is April (14.6 days).
The month with the least rainy days is July (4.5 days).
Average snowfall in October
Thornton, WA
- Average snowfall in October: 0.04"
The month with the highest snowfall is February (6.69").
The months with the least snowfall are June, July and August (0").
Average snowfall days in October
Thornton, WA
- Average snowfall days in October: 0.3 days
The months with the highest number of snowfall days are February and December (9.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in October /
Average sunshine in October
Thornton, WA
- Average daylight in October: 10h and 54min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in October: 6h and 48min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 4h and 36min).
Average sunshine days in October
Thornton, WA
- Average sunshine days in October: 17.9 days
The month with the most sunshine days is July (24.6 days).
The month with the least sunshine days is February (12.2 days).
Average UV index in October
Thornton, WA
- Average UV index in October: 3
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in October
Thornton, WA
- Average cloud cover in October: 32
The months with the most cloud cover are January and December (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility in October
Thornton, WA
- Average visibility in October: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).





