December weather forecast
Ukiah Rancheria, CA

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Weather in December

December, the first month of the winter in Ukiah Rancheria, is also a fresh month, with an average temperature varying between 37.4°F (3°C) and 53.6°F (12°C).

Temperature

December stands out as Ukiah Rancheria's coldest month, with temperatures ranging between an average high of 53.6°F (12°C) and a low of 37.4°F (3°C).

Humidity

In December, the average relative humidity is 76%.

Rainfall

The months with the most rainfall in Ukiah Rancheria are February and December, with an average 3.11" (79mm) of precipitation.

Snowfall

January, March through December are months without snowfall in Ukiah Rancheria, California.

Daylight

The month with the shortest days is December, with an average of 9h and 30min of daylight.
On the first day of December in Ukiah Rancheria, sunrise is at 7:13 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:00 pm PST.

Sunshine

December has the least sunshine of the year in Ukiah Rancheria, with an average of 5.3h of sunshine.

UV index

The average daily maximum UV index in December in Ukiah Rancheria, California, is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, the UV index of 3 transforms into the following advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. Avoiding the Sun during its peak radiation time around midday is a healthy practice. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
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Frequently asked questions

What is the coldest time of year in Ukiah Rancheria?

December, marked by an average high-temperature of 53.6°F (12°C) and a low-temperature of 37.4°F (3°C), is the coldest month in Ukiah Rancheria, California.

What are the temperatures in Ukiah Rancheria in December?

The high-temperature in Ukiah Rancheria, California, during December is 53.6°F (12°C) and the low-temperature is 37.4°F (3°C). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 82.4°F (28°C).

What is the average humidity in December in Ukiah Rancheria?

In December, the average relative humidity in Ukiah Rancheria, California, is 76%.

What is the rainiest month in Ukiah Rancheria?

The wettest months in Ukiah Rancheria, California, are February and December, with an average 3.11" (79mm) of rainfall.

How much does it rain in Ukiah Rancheria in December?

In December, in Ukiah Rancheria, the rain falls for 12.5 days. Throughout December, 3.11" (79mm) of precipitation is accumulated.

When it does not snow in Ukiah Rancheria?

In Ukiah Rancheria, California, snow does not fall in January, March through December.

What is the month with the shortest days in Ukiah Rancheria?

December has the shortest days of the year in Ukiah Rancheria, with an average of 9h and 30min of daylight.

What is the average length of the day in December in Ukiah Rancheria?

The average day length in December in Ukiah Rancheria, California, is 9h and 29min.

What time are sunrise and sunset in December in Ukiah Rancheria?

In December, on the first day of the month, sunrise is at 7:13 am and sunset at 4:50 pm. On the last day of the month, in Ukiah Rancheria, sunrise is at 7:31 am and sunset at 5:00 pm PST.

What is the month with the least sunshine in Ukiah Rancheria?

December has the least sunshine of the year, with an average of 5.3h of sunshine.

How many hours of sunshine does Ukiah Rancheria have in December?

The average sunshine duration in December in Ukiah Rancheria, California, is 5.3h.

What is the UV index reading in December in Ukiah Rancheria?

In Ukiah Rancheria, California, the average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Ukiah Rancheria, CA

Average temperature in December - Ukiah Rancheria, CA
  • Average high temperature in December: 53.6°F

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is December (53.6°F).

  • Average low temperature in December: 37.4°F

The month with the highest average low temperature is July (53.6°F).
The coldest month (with the lowest average low temperature) is December (37.4°F).

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Average pressure in December
Ukiah Rancheria, CA

Average pressure in December - Ukiah Rancheria, CA
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).

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Average wind speed in December
Ukiah Rancheria, CA

Average wind speed in December - Ukiah Rancheria, CA
  • Average wind speed in December: 4.5mph

The windiest months (with the highest average wind speed) are April, May and June (5.5mph).
The calmest month (with the lowest average wind speed) is November (4.2mph).

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Average humidity in December
Ukiah Rancheria, CA

Average humidity in December - Ukiah Rancheria, CA
  • Average humidity in December: 76%

The month with the highest relative humidity is March (79%).
The months with the lowest relative humidity are July and September (58%).

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Average rainfall in December
Ukiah Rancheria, CA

Average rainfall in December - Ukiah Rancheria, CA
  • Average rainfall in December: 3.11"

The wettest months (with the highest rainfall) are February and December (3.11").
The driest months (with the least rainfall) are July and August (0.08").

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Average rainfall days in December
Ukiah Rancheria, CA

Average rainfall days in December - Ukiah Rancheria, CA
  • Average rainfall days in December: 12.5 days

The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is August (1.3 days).

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Average snowfall in December
Ukiah Rancheria, CA

Average snowfall in December - Ukiah Rancheria, CA
  • Average snowfall in December: 0"

The month with the highest snowfall is February (0.04").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in December
Ukiah Rancheria, CA

Average snowfall days in December - Ukiah Rancheria, CA
  • Average snowfall days in December: 0 days

The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

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Average daylight in December /
Average sunshine in December
Ukiah Rancheria, CA

Average daylight in December / Average sunshine in December - Ukiah Rancheria, CA
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 5h and 2min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

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Average sunshine days in December
Ukiah Rancheria, CA

Average sunshine days in December - Ukiah Rancheria, CA
  • Average sunshine days in December: 17.6 days

The month with the most sunshine days is July (28.5 days).
The month with the least sunshine days is March (15.9 days).

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Average UV index in December
Ukiah Rancheria, CA

Average UV index in December - Ukiah Rancheria, CA
  • Average UV index in December: 3

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are February and November (UV index 2).

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Average cloud cover in December
Ukiah Rancheria, CA

Average cloud cover in December - Ukiah Rancheria, CA
  • Average cloud cover in December: 42

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 6).

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Average visibility in December
Ukiah Rancheria, CA

Average visibility in December - Ukiah Rancheria, CA
  • Average visibility in December: 5mi

The months with the highest visibility are February, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, March and December (5mi).

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Ukiah Rancheria, California, USA

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