December weather forecast
Middleton, CA

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Weather in December

December, the first month of the winter in Middleton, is still a cool month, with an average temperature ranging between max 54.9°F (12.7°C) and min 42.3°F (5.7°C).

Temperature

Middleton, California, witnesses the coldest weather in December, with temperatures averaging a high of 54.9°F (12.7°C) and a low of 42.3°F (5.7°C).

Humidity

The average relative humidity in December in Middleton is 72%.

Rainfall

In Middleton, in December, it is raining for 9.9 days, with typically 2.13" (54mm) of accumulated precipitation. In Middleton, during the entire year, the rain falls for 68.2 days and collects up to 11.93" (303mm) of precipitation.

Daylight

The month with the shortest days is December, with an average of 9h and 36min of daylight.
On the first day of December, sunrise is at 7:07 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:59 pm PST.

Sunshine

December has the least sunshine of the year in Middleton, with an average of 5.7h of sunshine.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 3 in December translates into this advice:
Heed the precautions - It is counselled to guard against solar damage. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest in Middleton?

In Middleton, the average lowest temperatures are observed in December, with a high of 54.9°F (12.7°C) and a low of 42.3°F (5.7°C).

What is the usual temperature for Middleton in December?

In December, in Middleton, the average high-temperature is 54.9°F (12.7°C), and the average low-temperature is 42.3°F (5.7°C). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 84.2°F (29°C).

What is the average humidity in December in Middleton?

In Middleton, California, the average relative humidity in December is 72%.

How many days does it rain in December in Middleton?

In December, the rain falls for 9.9 days. Throughout December, 2.13" (54mm) of precipitation is accumulated.

What is the month with the shortest days in Middleton?

The month with the shortest days is December, with an average of 9h and 36min of daylight.

How many hours of daylight does Middleton have in December?

In Middleton, the average day length in December is 9h and 34min.

When are sunrise and sunset in December in Middleton?

On the first day of December, sunrise is at 7:07 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:59 pm PST.

What is the month with the least sunshine in Middleton?

December has the least sunshine of the year, with an average of 5.7h of sunshine.

How many hours of sunshine does Middleton have in December?

In Middleton, California, the average sunshine duration in December is 5.7h.

What are the months with the lowest UV index in Middleton?

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

What is the UV index intensity in December in Middleton?

The average daily maximum UV index in December in Middleton is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Middleton, CA

Average temperature in December - Middleton, CA
  • Average high temperature in December: 54.9°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is December (54.9°F).

  • Average low temperature in December: 42.3°F

The month with the highest average low temperature is August (56.5°F).
The coldest months (with the lowest average low temperature) are January and December (42.3°F).

Average pressure in December
Middleton, CA

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in December
Middleton, CA

Average wind speed in December - Middleton, CA
  • Average wind speed in December: 4.9mph

The windiest month (with the highest average wind speed) is May (6.6mph).
The calmest month (with the lowest average wind speed) is November (4.5mph).

Average humidity in December
Middleton, CA

Average humidity in December - Middleton, CA
  • Average humidity in December: 72%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is September (58%).

Average rainfall in December
Middleton, CA

Average rainfall in December - Middleton, CA
  • Average rainfall in December: 2.13"

The wettest month (with the highest rainfall) is February (2.32").
The driest months (with the least rainfall) are July and August (0.04").

Average rainfall days in December
Middleton, CA

Average rainfall days in December - Middleton, CA
  • Average rainfall days in December: 9.9 days

The month with the highest number of rainy days is March (11.9 days).
The month with the least rainy days is August (0.9 days).

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

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

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in December: 5h and 4min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

Average sunshine days in December
Middleton, CA

Average sunshine days in December - Middleton, CA
  • Average sunshine days in December: 20.1 days

The months with the most sunshine days are July and August (29.1 days).
The month with the least sunshine days is March (18.3 days).

Average UV index in December
Middleton, CA

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

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).

Average cloud cover in December
Middleton, CA

Average cloud cover in December - Middleton, CA
  • Average cloud cover in December: 36

The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 7).

Average visibility in December
Middleton, CA

Average visibility in December - Middleton, 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).

Middleton, California, USA

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