October weather forecastRoy, WA
October
Weather in October
October, like September, is another refreshing autumn month in Roy, Washington, with an average temperature ranging between max 58.8°F (14.9°C) and min 43.3°F (6.3°C).Temperature
The start of October involves a temperature drop, moving from a pleasant 70.7°F (21.5°C) in September to a moderate 58.8°F (14.9°C). The average temperature during October nights in Roy is registered at a frosty 43.3°F (6.3°C).Humidity
In October, the average relative humidity in Roy, Washington, is 82%.Rainfall
In October, the rain falls for 15.9 days. Throughout October, 3.78" (96mm) of precipitation is accumulated. Throughout the year, there are 174.2 rainfall days, and 31.06" (789mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in October is 10h and 52min.On the first day of the month, sunrise is at 7:10 am and sunset at 6:48 pm. On the last day of October, sunrise is at 7:52 am and sunset at 5:54 pm PDT.
Sunshine
In October, the average sunshine is 5.4h.UV index
In October, the average daily maximum UV index in Roy is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 3 in October converts into the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Roy, WA
- Average high temperature in October: 58.8°F
The warmest month (with the highest average high temperature) is August (78.4°F).
The month with the lowest average high temperature is December (43.5°F).
- Average low temperature in October: 43.3°F
The month with the highest average low temperature is August (52.2°F).
The coldest month (with the lowest average low temperature) is February (34°F).
Average pressure in October
Roy, WA
- Average pressure in October: 30.04"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).
Average wind speed in October
Roy, WA
- Average wind speed in October: 4.3mph
The windiest month (with the highest average wind speed) is March (5mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in October
Roy, WA
- Average humidity in October: 82%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is July (69%).
Average rainfall in October
Roy, WA
- Average rainfall in October: 3.78"
The wettest month (with the highest rainfall) is December (4.96").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in October
Roy, WA
- Average rainfall days in October: 15.9 days
The month with the highest number of rainy days is March (19.7 days).
The month with the least rainy days is August (5.2 days).
Average snowfall in October
Roy, WA
- Average snowfall in October: 0"
The month with the highest snowfall is February (1.73").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in October
Roy, WA
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is February (2.8 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
Roy, 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: 5h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).
Average sunshine days in October
Roy, WA
- Average sunshine days in October: 13 days
The month with the most sunshine days is August (22.9 days).
The month with the least sunshine days is November (9.1 days).
Average UV index in October
Roy, WA
- Average UV index in October: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in October
Roy, WA
- Average cloud cover in October: 46
The months with the most cloud cover are January and December (Cloud cover 59).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in October
Roy, WA
- Average visibility in October: 5mi
The months with the highest visibility are July and August (6mi).
The months with the lowest visibility are January, February and December (4mi).
