October weather forecastCastle Rock, WA
October
Weather in October
October, like September, is a moderate autumn month in Castle Rock, Washington, with an average temperature varying between 41.9°F (5.5°C) and 58.8°F (14.9°C).Temperature
A moderate decline in the average high-temperature is seen during October, decreasing from a pleasant 70.7°F (21.5°C) in September to a mild 58.8°F (14.9°C). Castle Rock records a consistent low-temperature of 41.9°F (5.5°C) during October nights.Humidity
In October, the average relative humidity is 84%.Rainfall
In Castle Rock, Washington, in October, it is raining for 13.6 days, with typically 1.69" (43mm) of accumulated precipitation. In Castle Rock, during the entire year, the rain falls for 157.3 days and collects up to 16.54" (420mm) of precipitation.Snowfall
In Castle Rock, snow does not fall in April through October.Daylight
The average length of the day in October is 10h and 53min.On the first day of October, sunrise is at 7:11 am and sunset at 6:50 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 5:57 pm PDT.
Sunshine
In Castle Rock, the average sunshine in October is 5h.UV index
The average daily maximum UV index in October is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In October, the UV index of 3 transforms into the following advice:
Be vigilant - A duty to shield skin and eyes from injury exists. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Castle Rock, WA
- Average high temperature in October: 58.8°F
The warmest month (with the highest average high temperature) is August (77.7°F).
The month with the lowest average high temperature is December (42.4°F).
- Average low temperature in October: 41.9°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (32.5°F).
Average pressure in October
Castle Rock, WA
- Average pressure in October: 30.04"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in October
Castle Rock, WA
- Average wind speed in October: 4mph
The windiest month (with the highest average wind speed) is January (4.8mph).
The calmest months (with the lowest average wind speed) are August and September (3.7mph).
Average humidity in October
Castle Rock, WA
- Average humidity in October: 84%
The months with the highest relative humidity are February and November (89%).
The months with the lowest relative humidity are July and August (73%).
Average rainfall in October
Castle Rock, WA
- Average rainfall in October: 1.69"
The wettest month (with the highest rainfall) is January (2.28").
The driest month (with the least rainfall) is August (0.31").
Average rainfall days in October
Castle Rock, WA
- Average rainfall days in October: 13.6 days
The month with the highest number of rainy days is March (17.5 days).
The month with the least rainy days is July (6.1 days).
Average snowfall in October
Castle Rock, WA
- Average snowfall in October: 0"
The month with the highest snowfall is February (1.02").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in October
Castle Rock, WA
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is February (2.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in October /
Average sunshine in October
Castle Rock, WA
- Average daylight in October: 10h and 54min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in October: 5h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 30min).
Average sunshine days in October
Castle Rock, WA
- Average sunshine days in October: 15.9 days
The month with the most sunshine days is August (21.9 days).
The month with the least sunshine days is April (10.5 days).
Average UV index in October
Castle Rock, WA
- Average UV index in October: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in October
Castle Rock, WA
- Average cloud cover in October: 51
The month with the most cloud cover is February (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in October
Castle Rock, WA
- Average visibility in October: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
