October weather forecastUmtanum, WA
October
Weather in October
October, like September, is another refreshing autumn month in Umtanum, Washington, with an average temperature varying between 39°F (3.9°C) and 56.3°F (13.5°C).Temperature
A noticeable downshift in temperatures is seen as September gives way to October, with average highs moving from a pleasant 71.1°F (21.7°C) to a mild 56.3°F (13.5°C). Umtanum registers a consistent average low-temperature of 39°F (3.9°C) during October.Humidity
In October, the average relative humidity in Umtanum is 65%.Rainfall
In October, in Umtanum, the rain falls for 10.7 days. Throughout October, 0.79" (20mm) of precipitation is accumulated. Throughout the year, in Umtanum, there are 99.9 rainfall days, and 8.66" (220mm) of precipitation is accumulated.Snowfall
January through April, September through December are months with snowfall in Umtanum. In Umtanum, Washington, in October, snow falls for 0.3 days, with typically accumulated 0.16" (4mm) of snow. In Umtanum, during the entire year, snow falls for 35.4 days and aggregates up to 15.59" (396mm) of snow.Daylight
In October, the average length of the day in Umtanum is 10h and 52min.On the first day of the month, sunrise is at 7:01 am and sunset at 6:40 pm. On the last day of October, in Umtanum, sunrise is at 7:44 am and sunset at 5:46 pm PDT.
Sunshine
In October, the average sunshine is 6.6h.UV index
The average daily maximum UV index in October in Umtanum, Washington, is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: During October, 3 as the daily maximum UV index converts into the following advice:
Make use of precautions - It is urged to ward off sun damage. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Umtanum, WA
- Average high temperature in October: 56.3°F
The warmest months (with the highest average high temperature) are July and August (82°F).
The month with the lowest average high temperature is December (33.3°F).
- Average low temperature in October: 39°F
The month with the highest average low temperature is August (55.2°F).
The coldest month (with the lowest average low temperature) is December (21.4°F).
Average pressure in October
Umtanum, WA
- Average pressure in October: 30.03"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is August (29.94"Hg).
Average wind speed in October
Umtanum, WA
- Average wind speed in October: 5.5mph
The windiest month (with the highest average wind speed) is June (8.9mph).
The calmest month (with the lowest average wind speed) is December (4.2mph).
Average humidity in October
Umtanum, WA
- Average humidity in October: 65%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are July and August (46%).
Average rainfall in October
Umtanum, WA
- Average rainfall in October: 0.79"
The wettest month (with the highest rainfall) is December (1.3").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in October
Umtanum, WA
- Average rainfall days in October: 10.7 days
The month with the highest number of rainy days is March (12.4 days).
The month with the least rainy days is August (2.8 days).
Average snowfall in October
Umtanum, WA
- Average snowfall in October: 0.16"
The month with the highest snowfall is December (4.65").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in October
Umtanum, WA
- Average snowfall days in October: 0.3 days
The months with the highest number of snowfall days are January and December (8.7 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in October /
Average sunshine in October
Umtanum, 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 36min
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 48min).
Average sunshine days in October
Umtanum, WA
- Average sunshine days in October: 18.2 days
The month with the most sunshine days is July (27.1 days).
The month with the least sunshine days is February (13.5 days).
Average UV index in October
Umtanum, 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, March, November and December (UV index 2).
Average cloud cover in October
Umtanum, WA
- Average cloud cover in October: 29
The month with the most cloud cover is January (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in October
Umtanum, 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 and December (4mi).
