Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December proves to be the coldest month, recording an average maximum temperature of 44.1°F (6.7°C) and a minimum temperature of 36.3°F (2.4°C).Humidity
November and December, with an average relative humidity of 88%, are the most humid months in Menlo.Rainfall
The month with the most rainfall is December, when the rain falls for 14.4 days and typically aggregates up to 1.46" (37mm) of precipitation.Snowfall
April through October and December are months without snowfall in Menlo.Daylight
With an average of 8h and 36min of daylight, December has the shortest days of the year in Menlo.On the first day of December, sunrise is at 7:39 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:58 am and sunset at 4:37 pm PST.
Sunshine
In December, the average sunshine in Menlo is 3.7h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Menlo. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Frequently asked questions
What is the coldest month in Menlo?
How cold does it get in Menlo in December?
What are the most humid months in Menlo?
What is the average humidity in December in Menlo?
What is the rainiest month in Menlo?
How many days does it rain in December in Menlo?
When it does not snow in Menlo?
Does it snow in Menlo in December?
What is the month with the shortest days in Menlo?
How many hours of daylight does Menlo have in December?
When is the sunrise / sunset in December in Menlo?
How many hours of sunshine does Menlo have in December?
When is the lowest UV index in Menlo?
How high is the UV index in December in Menlo?
Average temperature in December
Menlo, WA
- Average high temperature in December: 44.1°F
The warmest month (with the highest average high temperature) is August (70.7°F).
The month with the lowest average high temperature is December (44.1°F).
- Average low temperature in December: 36.3°F
The month with the highest average low temperature is August (51.4°F).
The coldest month (with the lowest average low temperature) is December (36.3°F).
Average pressure in December
Menlo, WA
- Average pressure in December: 30.06"Hg
The months with the highest atmospheric pressure are January, April and July (30.07"Hg).
The month with the lowest atmospheric pressure is March (30.01"Hg).
Average wind speed in December
Menlo, WA
- Average wind speed in December: 6.5mph
The windiest month (with the highest average wind speed) is January (7mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in December
Menlo, WA
- Average humidity in December: 88%
The months with the highest relative humidity are November and December (88%).
The months with the lowest relative humidity are June and July (80%).
Average rainfall in December
Menlo, WA
- Average rainfall in December: 1.46"
The wettest month (with the highest rainfall) is December (1.46").
The driest months (with the least rainfall) are July and August (0.16").
Average rainfall days in December
Menlo, WA
- Average rainfall days in December: 14.4 days
The months with the highest number of rainy days are March and December (14.4 days).
The month with the least rainy days is August (4.1 days).
Average snowfall in December
Menlo, WA
- Average snowfall in December: 0"
The month with the highest snowfall is January (0.47").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").
Average snowfall days in December
Menlo, WA
- Average snowfall days in December: 0.5 days
The months with the highest number of snowfall days are January and February (1.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Menlo, WA
- Average daylight in December: 8h and 4min
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: 3h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Menlo, WA
- Average sunshine days in December: 12.8 days
The month with the most sunshine days is August (22.9 days).
The month with the least sunshine days is February (11.5 days).
Average UV index in December
Menlo, WA
- Average UV index in December: 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 2).
Average cloud cover in December
Menlo, WA
- Average cloud cover in December: 61
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 40).
Average visibility in December
Menlo, WA
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, October, November and December (5mi).
The months with the lowest visibility are July, August and September (4mi).
Menlo, Washington, USA
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