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
Ukiah experiences its lowest average temperatures in December, reaching a peak of 36.7°F (2.6°C) and a minimum of 25.7°F (-3.5°C).Humidity
In Ukiah, the average relative humidity in December is 79%.Rainfall
In December, in Ukiah, Oregon, the rain falls for 14.4 days. Throughout December, 2.09" (53mm) of precipitation is accumulated. Throughout the year, in Ukiah, there are 145.3 rainfall days, and 16.69" (424mm) of precipitation is accumulated.Snowfall
Months with snowfall in Ukiah are January through May, September through December. In Ukiah, in December, snow falls for 8.3 days, with typically accumulated 3.74" (95mm) of snow. Throughout the year, there are 30.7 snowfall days, and 15.51" (394mm) of snow is accumulated.Daylight
With an average of 8h and 48min of daylight, December has the shortest days of the year in Ukiah.On the first day of December in Ukiah, sunrise is at 7:15 am and sunset at 4:15 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 4:23 pm PST.
Sunshine
The average sunshine in December in Ukiah is 5.1h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Ukiah, Oregon. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Frequently asked questions
What is the coldest month in Ukiah?
How cold is December in Ukiah?
What is the average humidity in December in Ukiah?
How many days does it rain in December in Ukiah?
How much does it snow in Ukiah in December?
What is the month with the shortest days in Ukiah?
How many hours of daylight does Ukiah have in December?
What time are sunrise and sunset in December in Ukiah?
How many hours of sunshine does Ukiah have in December?
What are the months with the lowest UV index in Ukiah?
What is the UV index reading in December in Ukiah?
Average temperature in December
Ukiah, OR
- Average high temperature in December: 36.7°F
The warmest months (with the highest average high temperature) are July and August (81.5°F).
The month with the lowest average high temperature is December (36.7°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is August (59.5°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).
Average pressure in December
Ukiah, OR
- Average pressure in December: 30.17"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in December
Ukiah, OR
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is September (6.2mph).
Average humidity in December
Ukiah, OR
- Average humidity in December: 79%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (41%).
Average rainfall in December
Ukiah, OR
- Average rainfall in December: 2.09"
The wettest month (with the highest rainfall) is March (2.2").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in December
Ukiah, OR
- Average rainfall days in December: 14.4 days
The month with the highest number of rainy days is March (18.4 days).
The month with the least rainy days is August (3.5 days).
Average snowfall in December
Ukiah, OR
- Average snowfall in December: 3.74"
The month with the highest snowfall is February (5.24").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Ukiah, OR
- Average snowfall days in December: 8.3 days
The month with the highest number of snowfall days is December (8.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Ukiah, 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: 5h and 1min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in December
Ukiah, OR
- Average sunshine days in December: 11.6 days
The month with the most sunshine days is August (24.8 days).
The month with the least sunshine days is February (8.7 days).
Average UV index in December
Ukiah, 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
Ukiah, OR
- Average cloud cover in December: 46
The months with the most cloud cover are January and February (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in December
Ukiah, OR
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Ukiah, Oregon, USA
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