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, having an average high-temperature of 44.1°F (6.7°C) and an average low-temperature of 34.3°F (1.3°C), is the coldest month.Humidity
The months with the highest humidity in Dayton, Oregon, are February and December, with an average relative humidity of 87%.Rainfall
The month with the most rainfall in Dayton is December, when the rain falls for 19.3 days and typically aggregates up to 4.49" (114mm) of precipitation.Snowfall
January through March, November and December are months with snowfall in Dayton. In Dayton, in December, during 0.5 snowfall days, 0.28" (7mm) of snow is typically accumulated. Throughout the year, in Dayton, there are 5.3 snowfall days, and 3.19" (81mm) of snow is accumulated.Daylight
The month with the shortest days in Dayton is December, with an average of 8h and 48min of daylight.On the first day of December in Dayton, sunrise is at 7:31 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:51 am and sunset at 4:40 pm PST.
Sunshine
In Dayton, Oregon, the average sunshine in December is 4h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Dayton, Oregon. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the maximum UV index of 2 transforms into these recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Frequently asked questions
What is the coldest month in Dayton?
How cold does it get in Dayton in December?
What are the most humid months in Dayton?
What is the average humidity in December in Dayton?
What is the rainiest month in Dayton?
How many days does it rain in December in Dayton?
How much does it snow in Dayton in December?
What is the month with the shortest days in Dayton?
What is the average length of the day in December in Dayton?
When are sunrise and sunset in December in Dayton?
How long on average sun shines in December in Dayton?
When is the lowest UV index in Dayton?
What is the UV index reading in December in Dayton?
Average temperature in December
Dayton, OR
- Average high temperature in December: 44.1°F
The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (44.1°F).
- Average low temperature in December: 34.3°F
The month with the highest average low temperature is August (54.3°F).
The coldest month (with the lowest average low temperature) is December (34.3°F).
Average pressure in December
Dayton, OR
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in December
Dayton, OR
- Average wind speed in December: 4.8mph
The windiest month (with the highest average wind speed) is March (5.2mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in December
Dayton, OR
- Average humidity in December: 87%
The months with the highest relative humidity are February and December (87%).
The month with the lowest relative humidity is August (67%).
Average rainfall in December
Dayton, OR
- Average rainfall in December: 4.49"
The wettest month (with the highest rainfall) is December (4.49").
The driest months (with the least rainfall) are July and August (0.35").
Average rainfall days in December
Dayton, OR
- Average rainfall days in December: 19.3 days
The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (4.6 days).
Average snowfall in December
Dayton, OR
- Average snowfall in December: 0.28"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Dayton, OR
- Average snowfall days in December: 0.5 days
The month with the highest number of snowfall days is February (2 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
Dayton, 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: 4h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in December
Dayton, OR
- Average sunshine days in December: 9.7 days
The month with the most sunshine days is July (24.2 days).
The month with the least sunshine days is February (8.4 days).
Average UV index in December
Dayton, OR
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Dayton, OR
- Average cloud cover in December: 59
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in December
Dayton, OR
- Average visibility in December: 4mi
The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are January, February and December (4mi).
Dayton, Oregon, USA
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