October weather forecastBlack Diamond, WA
October
Weather in October
October, like September, is a moderate autumn month in Black Diamond, Washington, with an average temperature varying between 41.9°F (5.5°C) and 57.2°F (14°C).Temperature
The transition into October involves a decrease in the average high-temperature, falling from an agreeable 68.4°F (20.2°C) in September to a mild 57.2°F (14°C). In October, the recorded average low-temperature in Black Diamond is an icy 41.9°F (5.5°C).Humidity
The average relative humidity in October is 79%.Rainfall
In October, the rain falls for 16.5 days. Throughout October, 3.9" (99mm) of precipitation is accumulated. Throughout the year, in Black Diamond, Washington, there are 182.4 rainfall days, and 36.77" (934mm) of precipitation is accumulated.Snowfall
In Black Diamond, snow does not fall in May through October.Daylight
In Black Diamond, the average length of the day in October is 10h and 50min.On the first day of the month, sunrise is at 7:08 am and sunset at 6:46 pm. On the last day of October, sunrise is at 7:51 am and sunset at 5:52 pm PDT.
Sunshine
In October, the average sunshine is 5.4h.UV index
The average daily maximum UV index in October is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.Note: In October, the maximum UV index of 2 translates into these guidelines:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Black Diamond, WA
- Average high temperature in October: 57.2°F
The warmest month (with the highest average high temperature) is August (75.4°F).
The month with the lowest average high temperature is December (40.8°F).
- Average low temperature in October: 41.9°F
The month with the highest average low temperature is August (50.2°F).
The coldest month (with the lowest average low temperature) is February (31.6°F).
Average pressure in October
Black Diamond, WA
- Average pressure in October: 30.04"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30"Hg).
Average wind speed in October
Black Diamond, WA
- Average wind speed in October: 4.2mph
The windiest month (with the highest average wind speed) is January (5.2mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).
Average humidity in October
Black Diamond, WA
- Average humidity in October: 79%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is July (70%).
Average rainfall in October
Black Diamond, WA
- Average rainfall in October: 3.9"
The wettest month (with the highest rainfall) is December (5.43").
The driest month (with the least rainfall) is July (0.59").
Average rainfall days in October
Black Diamond, WA
- Average rainfall days in October: 16.5 days
The month with the highest number of rainy days is March (20.5 days).
The month with the least rainy days is August (6.7 days).
Average snowfall in October
Black Diamond, WA
- Average snowfall in October: 0"
The month with the highest snowfall is February (4.17").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in October
Black Diamond, WA
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is February (6 days).
The months with the least snowfall days are June, July, August and October (0 days).
Average daylight in October /
Average sunshine in October
Black Diamond, WA
- Average daylight in October: 10h and 48min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in October: 5h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 4h and 6min).
Average sunshine days in October
Black Diamond, WA
- Average sunshine days in October: 13.1 days
The month with the most sunshine days is August (22 days).
The month with the least sunshine days is February (8.4 days).
Average UV index in October
Black Diamond, WA
- Average UV index in October: 2
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in October
Black Diamond, WA
- Average cloud cover in October: 45
The months with the most cloud cover are January, February, March and December (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in October
Black Diamond, 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).
