December weather forecastMapleton, OR
December
Weather in December
The first month of the winter, December, is also a frosty month in Mapleton, Oregon, with an average temperature varying between 40.8°F (4.9°C) and 48°F (8.9°C).Temperature
December stands out as Mapleton's coldest month, with temperatures ranging between an average high of 48°F (8.9°C) and a low of 40.8°F (4.9°C).Humidity
The average relative humidity in December is 83%.Rainfall
The month with the most rainfall is December, when the rain falls for 16.6 days and typically aggregates up to 3.58" (91mm) of precipitation.Snowfall
March through October and December are months without snowfall.Daylight
The month with the shortest days is December, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:31 am and sunset at 4:38 pm. On the last day of December, in Mapleton, sunrise is at 7:50 am and sunset at 4:47 pm PST.
Sunshine
In Mapleton, Oregon, the average sunshine in December is 4.2h.UV index
The months with the lowest UV index in Mapleton are February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: During December, 2 as the daily maximum UV index converts into the following advice:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. To protect against the Sun's most potent rays, avoid direct exposure around midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Mapleton, OR
- Average high temperature in December: 48°F
The warmest month (with the highest average high temperature) is August (68.2°F).
The month with the lowest average high temperature is December (48°F).
- Average low temperature in December: 40.8°F
The month with the highest average low temperature is August (52.7°F).
The coldest month (with the lowest average low temperature) is February (40.6°F).
Average pressure in December
Mapleton, OR
- Average pressure in December: 30.08"Hg
The months with the highest atmospheric pressure are January and April (30.09"Hg).
The month with the lowest atmospheric pressure is September (30.01"Hg).
Average wind speed in December
Mapleton, OR
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is December (9.4mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in December
Mapleton, OR
- Average humidity in December: 83%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are April, May, June, July, September and October (81%).
Average rainfall in December
Mapleton, OR
- Average rainfall in December: 3.58"
The wettest month (with the highest rainfall) is December (3.58").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in December
Mapleton, OR
- Average rainfall days in December: 16.6 days
The month with the highest number of rainy days is March (16.9 days).
The month with the least rainy days is July (2.9 days).
Average snowfall in December
Mapleton, OR
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.35").
The months with the least snowfall are March, April, May, June, July, August, September, October and December (0").
Average snowfall days in December
Mapleton, OR
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and December (0 days).
Average daylight in December /
Average sunshine in December
Mapleton, OR
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 4h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in December
Mapleton, OR
- Average sunshine days in December: 13.5 days
The month with the most sunshine days is July (26.9 days).
The month with the least sunshine days is February (12.3 days).
Average UV index in December
Mapleton, OR
- 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 February, November and December (UV index 2).
Average cloud cover in December
Mapleton, OR
- Average cloud cover in December: 55
The month with the most cloud cover is February (Cloud cover 59).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in December
Mapleton, OR
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
