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
The shift from September to October corresponds with a decrease in the average high-temperature, down to a cool 50.7°F (10.4°C) from a comfortable 64.6°F (18.1°C). Roslyn anticipates an average minimum temperature of 34.7°F (1.5°C) in the month of October.Humidity
In October, the average relative humidity is 76%.Rainfall
In Roslyn, in October, during 15.7 rainfall days, 2.87" (73mm) of precipitation is typically accumulated. In Roslyn, during the entire year, the rain falls for 161.2 days and collects up to 28.46" (723mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In October, it is snowing for 0.6 days. Throughout October, 0.28" (7mm) of snow is accumulated. Throughout the year, there are 69.9 snowfall days, and 60.24" (1530mm) of snow is accumulated.Daylight
In Roslyn, the average length of the day in October is 10h and 51min.On the first day of October, sunrise is at 7:04 am and sunset at 6:42 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 5:48 pm PDT.
Sunshine
The average sunshine in October is 6h.UV index
In Roslyn, the average daily maximum UV index in October is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In October, an average UV index of 2 transforms into the following instructions:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The Sun's radiation is especially intense around midday; try to stay in shade during this period. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in October?
What is the average humidity in October?
How many days does it rain in October?
How much does it snow in October?
What is the average length of the day in October?
What time are sunrise and sunset in October?
How many hours of sunshine does Roslyn have in October?
How high is the UV index in October?
Average temperature in October
Roslyn, WA
- Average high temperature in October: 50.7°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 (29.7°F).
- Average low temperature in October: 34.7°F
The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (18.3°F).
Average pressure in October
Roslyn, WA
- Average pressure in October: 30.03"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).
Average wind speed in October
Roslyn, WA
- Average wind speed in October: 4.6mph
The windiest month (with the highest average wind speed) is June (6.7mph).
The calmest month (with the lowest average wind speed) is December (4.2mph).
Average humidity in October
Roslyn, WA
- Average humidity in October: 76%
The months with the highest relative humidity are January and February (92%).
The months with the lowest relative humidity are July and August (60%).
Average rainfall in October
Roslyn, WA
- Average rainfall in October: 2.87"
The wettest month (with the highest rainfall) is January (4.41").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days in October
Roslyn, WA
- Average rainfall days in October: 15.7 days
The months with the highest number of rainy days are March and April (18.3 days).
The month with the least rainy days is August (5.5 days).
Average snowfall in October
Roslyn, WA
- Average snowfall in October: 0.28"
The month with the highest snowfall is January (16.3").
The months with the least snowfall are June, July and August (0").
Average snowfall days in October
Roslyn, WA
- Average snowfall days in October: 0.6 days
The month with the highest number of snowfall days is December (15.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in October /
Average sunshine in October
Roslyn, WA
- Average daylight in October: 10h and 5min
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 36min).
- Average sunshine in October: 6h and 0min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in October
Roslyn, WA
- Average sunshine days in October: 13.8 days
The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is February (6.8 days).
Average UV index in October
Roslyn, WA
- Average UV index in October: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in October
Roslyn, WA
- Average cloud cover in October: 41
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 18).
Average visibility in October
Roslyn, WA
- Average visibility in October: 5mi
The months with the highest visibility are May, June, July, August and September (6mi).
The month with the lowest visibility is January (3mi).
Roslyn, Washington, USA
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