December weather forecastOthello, WA
December
Weather in December
The first month of the winter, December, is also an icy month in Othello, Washington, with an average temperature varying between 25.7°F (-3.5°C) and 35.6°F (2°C).Temperature
Othello's coldest temperatures are experienced in December, with average high temperatures of 35.6°F (2°C) and lows of 25.7°F (-3.5°C).Humidity
In Othello, the average relative humidity in December is 80%.Rainfall
The wettest months are January and December, with an average 0.94" (24mm) of rainfall.Snowfall
Months with snowfall in Othello are January through April, September, November and December. In Othello, in December, snow falls for 5.5 days, with typically accumulated 1.81" (46mm) of snow. Throughout the year, there are 16.7 snowfall days, and 6.18" (157mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 36min of daylight.On the first day of December, sunrise is at 7:21 am and sunset at 4:10 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 4:18 pm PST.
Sunshine
The months with the least sunshine are January and December, with an average of 5.3h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the maximum UV index of 2 suggests this advice:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Othello, WA
- Average high temperature in December: 35.6°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is December (35.6°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is August (62.8°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).
Average pressure in December
Othello, WA
- Average pressure in December: 30.15"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is August (29.9"Hg).
Average wind speed in December
Othello, WA
- Average wind speed in December: 5.5mph
The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest month (with the lowest average wind speed) is December (5.5mph).
Average humidity in December
Othello, WA
- Average humidity in December: 80%
The month with the highest relative humidity is January (82%).
The months with the lowest relative humidity are July and August (36%).
Average rainfall in December
Othello, WA
- Average rainfall in December: 0.94"
The wettest months (with the highest rainfall) are January and December (0.94").
The driest months (with the least rainfall) are July and August (0.2").
Average rainfall days in December
Othello, WA
- Average rainfall days in December: 9.9 days
The month with the highest number of rainy days is March (13.7 days).
The month with the least rainy days is August (3.4 days).
Average snowfall in December
Othello, WA
- Average snowfall in December: 1.81"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in December
Othello, WA
- Average snowfall days in December: 5.5 days
The month with the highest number of snowfall days is December (5.5 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in December /
Average sunshine in December
Othello, WA
- Average daylight in December: 8h and 36min
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 December: 5h and 18min
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: 5h and 18min).
Average sunshine days in December
Othello, WA
- Average sunshine days in December: 17.1 days
The month with the most sunshine days is July (25.7 days).
The month with the least sunshine days is March (15 days).
Average UV index in December
Othello, WA
- Average UV index in December: 2
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 December
Othello, WA
- Average cloud cover in December: 44
The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 10).
Average visibility in December
Othello, WA
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
