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
Welches's temperature records reveal December as the coldest month, marked by average highs of 35.4°F (1.9°C) and lows of 26.4°F (-3.1°C).Humidity
In December, the average relative humidity in Welches is 87%.Rainfall
In Welches, Oregon, in December, during 8.8 rainfall days, 6.14" (156mm) of precipitation is typically accumulated. Throughout the year, in Welches, there are 111.1 rainfall days, and 36.93" (938mm) of precipitation is accumulated.Snowfall
Months with snowfall in Welches are January through June, September through December. The month with the most snowfall in Welches is December, when snow falls for 18.5 days and typically aggregates up to 37.2" (945mm) of snow.Daylight
December has the shortest days of the year, with an average of 8h and 48min of daylight.On the first day of December, sunrise is at 7:27 am and sunset at 4:26 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 4:35 pm PST.
Sunshine
January, February and December, with an average of 3.9h of sunshine, are months with the least sunshine.UV index
In December, the average daily maximum UV index in Welches is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
What is the coldest time of year in Welches?
How cold is it in Welches in December?
What is the average humidity in December in Welches?
How many days does it rain in December in Welches?
When does it snow the most in Welches?
How much does it snow in Welches in December?
What is the month with the shortest days in Welches?
How many hours of daylight does Welches have in December?
When is the sunrise / sunset in December in Welches?
What are the months with the least sunshine in Welches?
How long on average sun shines in December in Welches?
What is the UV index reading in December in Welches?
Average temperature in December
Welches, OR
- Average high temperature in December: 35.4°F
The warmest month (with the highest average high temperature) is August (76.5°F).
The month with the lowest average high temperature is December (35.4°F).
- Average low temperature in December: 26.4°F
The month with the highest average low temperature is August (49.8°F).
The coldest month (with the lowest average low temperature) is December (26.4°F).
Average pressure in December
Welches, OR
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.98"Hg).
Average wind speed in December
Welches, OR
- Average wind speed in December: 6.1mph
The windiest month (with the highest average wind speed) is January (6.5mph).
The calmest months (with the lowest average wind speed) are August and September (4.7mph).
Average humidity in December
Welches, OR
- Average humidity in December: 87%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is August (62%).
Average rainfall in December
Welches, OR
- Average rainfall in December: 6.14"
The wettest month (with the highest rainfall) is January (6.5").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in December
Welches, OR
- Average rainfall days in December: 8.8 days
The month with the highest number of rainy days is October (13.8 days).
The month with the least rainy days is July (4.4 days).
Average snowfall in December
Welches, OR
- Average snowfall in December: 37.2"
The month with the highest snowfall is December (37.2").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Welches, OR
- Average snowfall days in December: 18.5 days
The month with the highest number of snowfall days is December (18.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Welches, OR
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is August (Average sunshine: 11h and 30min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 54min).
Average sunshine days in December
Welches, OR
- Average sunshine days in December: 9.9 days
The month with the most sunshine days is July (26.1 days).
The month with the least sunshine days is February (8.9 days).
Average UV index in December
Welches, OR
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in December
Welches, OR
- Average cloud cover in December: 61
The month with the most cloud cover is February (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in December
Welches, OR
- Average visibility in December: 4mi
The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
Welches, Oregon, USA
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