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
October's arrival brings a noticeable temperature shift, dropping from an agreeable 72.7°F (22.6°C) in September to a refreshing 56.3°F (13.5°C). October nights are marked by an average temperature drop to a cold 41.4°F (5.2°C).Humidity
In October, the average relative humidity is 63%.Rainfall
In Coulee Dam, in October, it is raining for 10.3 days, with typically 0.87" (22mm) of accumulated precipitation. Throughout the year, there are 102.1 rainfall days, and 9.65" (245mm) of precipitation is accumulated.Snowfall
January through April, September through December are months with snowfall. In Coulee Dam, in October, during 0.2 snowfall days, 0.04" (1mm) of snow is typically accumulated. In Coulee Dam, during the entire year, snow falls for 33.4 days and aggregates up to 14.65" (372mm) of snow.Daylight
In October, the average length of the day is 10h and 49min.On the first day of October in Coulee Dam, sunrise is at 6:56 am and sunset at 6:34 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:38 pm PDT.
Sunshine
In October, the average sunshine is 6.7h.UV index
In October, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: In October, the maximum UV index of 2 suggests this advice:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are October temperatures?
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 long on average sun shines in October?
What is the UV index reading in October?
Average temperature in October
Coulee Dam, WA
- Average high temperature in October: 56.3°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is December (31.6°F).
- Average low temperature in October: 41.4°F
The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is December (21.4°F).
Average pressure in October
Coulee Dam, WA
- Average pressure in October: 30.03"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in October
Coulee Dam, WA
- Average wind speed in October: 5.9mph
The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is January (4.9mph).
Average humidity in October
Coulee Dam, WA
- Average humidity in October: 63%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (36%).
Average rainfall in October
Coulee Dam, WA
- Average rainfall in October: 0.87"
The wettest months (with the highest rainfall) are May and December (1.18").
The driest months (with the least rainfall) are July and August (0.2").
Average rainfall days in October
Coulee Dam, WA
- Average rainfall days in October: 10.3 days
The month with the highest number of rainy days is March (12.1 days).
The month with the least rainy days is August (3.2 days).
Average snowfall in October
Coulee Dam, WA
- Average snowfall in October: 0.04"
The month with the highest snowfall is January (4.41").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in October
Coulee Dam, WA
- Average snowfall days in October: 0.2 days
The month with the highest number of snowfall days is December (10.5 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in October /
Average sunshine in October
Coulee Dam, WA
- Average daylight in October: 10h and 5min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in October: 6h and 4min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in October
Coulee Dam, WA
- Average sunshine days in October: 19.2 days
The month with the most sunshine days is August (25.8 days).
The month with the least sunshine days is March (14.7 days).
Average UV index in October
Coulee Dam, WA
- Average UV index in October: 2
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in October
Coulee Dam, WA
- Average cloud cover in October: 31
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in October
Coulee Dam, 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).
Coulee Dam, Washington, USA
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