December weather forecast
Oakdale, CA

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Weather in December

December, the first month of the winter in Oakdale, is still a mild month, with temperature in the range of an average low of 41°F (5°C) and an average high of 55.4°F (13°C).

Temperature

The coldest period is December, when temperatures fluctuate between an average high of 55.4°F (13°C) and a low of 41°F (5°C).

Humidity

The average relative humidity in December is 70%.

Rainfall

In Oakdale, in December, during 8.4 rainfall days, 1.46" (37mm) of precipitation is typically accumulated. Throughout the year, there are 59.3 rainfall days, and 8.23" (209mm) of precipitation is accumulated.

Snowfall

The only month with snowfall is December. December is the month with the most snowfall. Snow falls for 0.1 days and accumulates 0.04" (1mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 36min of daylight.
On the first day of the month, sunrise is at 7:00 am and sunset at 4:44 pm. On the last day of December, sunrise is at 7:18 am and sunset at 4:54 pm PST.

Sunshine

December has the least sunshine of the year in Oakdale, with an average of 6h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum high UV index of 3 in December translates into the following recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

December, noted for its average high-temperature of 55.4°F (13°C) and an average low-temperature of 41°F (5°C), is considered the coldest month.

What is the usual temperature for Oakdale in December?

In December, the average high-temperature and low-temperature are 55.4°F (13°C) and 41°F (5°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, in September is estimated at 91.4°F (33°C).

What is the average humidity in December?

In Oakdale, the average relative humidity in December is 70%.

How many days does it rain in December?

In Oakdale, in December, it is raining for 8.4 days, with typically 1.46" (37mm) of accumulated precipitation.

What is the snowiest month?

December is the month with the most snowfall. Snow falls for 0.1 days and accumulates 0.04" (1mm) of snow.

When does it start snowing?

December is the first month it typically snows. Throughout December, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year in Oakdale, with an average of 9h and 36min of daylight.

How many hours of daylight does Oakdale have in December?

In December, the average day length is 9h and 36min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:00 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:54 pm PST.

What is the month with the least sunshine?

The month with the least sunshine is December, with an average of 6h of sunshine.

How long on average sun shines in December?

In Oakdale, the average sunshine duration in December is 6h.

When is the lowest UV index?

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index.

How high is the UV index in December?

In Oakdale, the average daily maximum UV index in December is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
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
Oakdale, CA

Average temperature in December - Oakdale, CA
  • Average high temperature in December: 55.4°F

The warmest month (with the highest average high temperature) is July (96.4°F).
The month with the lowest average high temperature is December (55.4°F).

  • Average low temperature in December: 41°F

The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is December (41°F).

Average pressure in December
Oakdale, CA

Average pressure in December - Oakdale, CA
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in December
Oakdale, CA

Average wind speed in December - Oakdale, CA
  • Average wind speed in December: 5.5mph

The windiest month (with the highest average wind speed) is June (7.1mph).
The calmest month (with the lowest average wind speed) is November (4.9mph).

Average humidity in December
Oakdale, CA

Average humidity in December - Oakdale, CA
  • Average humidity in December: 70%

The month with the highest relative humidity is January (72%).
The month with the lowest relative humidity is July (37%).

Average rainfall in December
Oakdale, CA

Average rainfall in December - Oakdale, CA
  • Average rainfall in December: 1.46"

The wettest month (with the highest rainfall) is March (1.65").
The driest months (with the least rainfall) are July and August (0.04").

Average rainfall days in December
Oakdale, CA

Average rainfall days in December - Oakdale, CA
  • Average rainfall days in December: 8.4 days

The month with the highest number of rainy days is March (11.3 days).
The month with the least rainy days is August (0.7 days).

Average snowfall in December
Oakdale, CA

Average snowfall in December - Oakdale, CA
  • Average snowfall in December: 0.04"

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

Average snowfall days in December
Oakdale, CA

Average snowfall days in December - Oakdale, CA
  • Average snowfall days in December: 0.1 days

The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

Average daylight in December /
Average sunshine in December
Oakdale, CA

Average daylight in December / Average sunshine in December - Oakdale, CA
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in December: 6h and 0min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).

Average sunshine days in December
Oakdale, CA

Average sunshine days in December - Oakdale, CA
  • Average sunshine days in December: 21.5 days

The month with the most sunshine days is August (29.2 days).
The month with the least sunshine days is March (18.7 days).

Average UV index in December
Oakdale, CA

Average UV index in December - Oakdale, CA
  • Average UV index in December: 3

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).

Average cloud cover in December
Oakdale, CA

Average cloud cover in December - Oakdale, CA
  • Average cloud cover in December: 32

The month with the most cloud cover is March (Cloud cover 33).
The month with the least cloud cover is July (Cloud cover 4).

Average visibility in December
Oakdale, CA

Average visibility in December - Oakdale, CA
  • 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).

Oakdale, California, USA

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