October weather forecastMattawa, WA
October
Weather in October
October, like September, is another mild autumn month in Mattawa, Washington, with an average temperature fluctuating between 43.7°F (6.5°C) and 60.1°F (15.6°C).Temperature
In October, the average high-temperature decreases considerably from a warm 76.1°F (24.5°C) in September to a mild 60.1°F (15.6°C). An average minimum temperature of 43.7°F (6.5°C) is recorded during the month of October.Humidity
In Mattawa, the average relative humidity in October is 58%.Rainfall
In October, the rain falls for 8.6 days. Throughout October, 0.59" (15mm) of precipitation is accumulated. In Mattawa, during the entire year, the rain falls for 86.4 days and collects up to 6.38" (162mm) of precipitation.Snowfall
In Mattawa, snow does not fall in May through August and October.Daylight
In October, the average length of the day in Mattawa, Washington, is 10h and 52min.On the first day of October, sunrise is at 6:59 am and sunset at 6:38 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 5:44 pm PDT.
Sunshine
In Mattawa, the average sunshine in October is 6.8h.UV index
In Mattawa, the average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: In October, the maximum UV index of 3 transforms into these recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Always opt for UVA and UVB-resistant sunglasses on radiant days. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Mattawa, WA
- Average high temperature in October: 60.1°F
The warmest months (with the highest average high temperature) are July and August (88.3°F).
The month with the lowest average high temperature is December (34.5°F).
- Average low temperature in October: 43.7°F
The month with the highest average low temperature is August (61.5°F).
The coldest month (with the lowest average low temperature) is December (24.3°F).
Average pressure in October
Mattawa, WA
- Average pressure in October: 30.03"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in October
Mattawa, WA
- Average wind speed in October: 5.8mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is December (4.7mph).
Average humidity in October
Mattawa, WA
- Average humidity in October: 58%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is July (37%).
Average rainfall in October
Mattawa, WA
- Average rainfall in October: 0.59"
The wettest months (with the highest rainfall) are January and December (0.87").
The driest month (with the least rainfall) is August (0.2").
Average rainfall days in October
Mattawa, WA
- Average rainfall days in October: 8.6 days
The month with the highest number of rainy days is March (10.6 days).
The month with the least rainy days is August (3.5 days).
Average snowfall in October
Mattawa, WA
- Average snowfall in October: 0"
The month with the highest snowfall is December (3.43").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in October
Mattawa, WA
- Average snowfall days in October: 0.1 days
The month with the highest number of snowfall days is December (6.5 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in October /
Average sunshine in October
Mattawa, 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 48min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in October
Mattawa, WA
- Average sunshine days in October: 20.9 days
The months with the most sunshine days are July and August (25.8 days).
The month with the least sunshine days is February (16 days).
Average UV index in October
Mattawa, WA
- Average UV index in October: 3
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in October
Mattawa, WA
- Average cloud cover in October: 27
The month with the most cloud cover is January (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in October
Mattawa, WA
- Average visibility in October: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
