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
Gresham witnesses the coldest weather in December, with temperatures averaging a high of 43.7°F (6.5°C) and a low of 33.8°F (1°C).Humidity
In December, the average relative humidity in Gresham, Oregon, is 82%.Rainfall
December is the month with the most rainfall. Rain falls for 17.6 days and accumulates 5.31" (135mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In Gresham, in December, snow falls for 1.2 days, with typically accumulated 0.67" (17mm) of snow. In Gresham, during the entire year, snow falls for 8.2 days and aggregates up to 5.87" (149mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 48min of daylight.On the first day of December in Gresham, sunrise is at 7:30 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:49 am and sunset at 4:36 pm PST.
Sunshine
The average sunshine in December in Gresham is 4.3h.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 of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. To guard against the harmful effects of the Sun, minimize exposure during midday. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Frequently asked questions
What part of the year is the coldest in Gresham?
How cold is December in Gresham?
What is the average humidity in December in Gresham?
What is the wettest month in Gresham?
How many days does it rain in December in Gresham?
How much does it snow in Gresham in December?
What is the month with the shortest days in Gresham?
How many hours of daylight does Gresham have in December?
When is the sunrise / sunset in December in Gresham?
How long on average sun shines in December in Gresham?
When is the lowest UV index in Gresham?
What is the UV index reading in December in Gresham?
Average temperature in December
Gresham, OR
- Average high temperature in December: 43.7°F
The warmest month (with the highest average high temperature) is August (80.4°F).
The month with the lowest average high temperature is December (43.7°F).
- Average low temperature in December: 33.8°F
The month with the highest average low temperature is August (53.4°F).
The coldest month (with the lowest average low temperature) is December (33.8°F).
Average pressure in December
Gresham, OR
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in December
Gresham, OR
- Average wind speed in December: 6.3mph
The windiest month (with the highest average wind speed) is January (6.8mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).
Average humidity in December
Gresham, OR
- Average humidity in December: 82%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is August (64%).
Average rainfall in December
Gresham, OR
- Average rainfall in December: 5.31"
The wettest month (with the highest rainfall) is December (5.31").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in December
Gresham, OR
- Average rainfall days in December: 17.6 days
The month with the highest number of rainy days is March (19.3 days).
The month with the least rainy days is August (4.4 days).
Average snowfall in December
Gresham, OR
- Average snowfall in December: 0.67"
The month with the highest snowfall is March (1.73").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Gresham, OR
- Average snowfall days in December: 1.2 days
The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Gresham, 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 2min
The months with the most sunshine are July and August (Average sunshine: 10h and 54min).
The months with the least sunshine are January and February (Average sunshine: 4h and 12min).
Average sunshine days in December
Gresham, OR
- Average sunshine days in December: 11.5 days
The month with the most sunshine days is July (25 days).
The month with the least sunshine days is February (9.7 days).
Average UV index in December
Gresham, 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
Gresham, OR
- Average cloud cover in December: 55
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in December
Gresham, OR
- Average visibility in December: 5mi
The months with the highest visibility are August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, November and December (5mi).
Gresham, Oregon, USA
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