December weather forecast
Montague, CA

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Weather in December

The first month of the winter, December, is also a wintry month in Montague, California, with an average temperature fluctuating between 27.1°F (-2.7°C) and 41.5°F (5.3°C).

Temperature

Montague's December weather, marked by an average high temperature of 41.5°F (5.3°C) and an average low temperature of 27.1°F (-2.7°C), is the coldest in the year.

Humidity

In Montague, the average relative humidity in December is 80%.

Rainfall

The month with the most rainfall in Montague is December, when the rain falls for 12.5 days and typically aggregates up to 2.56" (65mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Montague, California. In Montague, in December, during 6.6 snowfall days, 3.98" (101mm) of snow is typically accumulated. In Montague, during the entire year, snow falls for 30.9 days and aggregates up to 18.03" (458mm) of snow.

Daylight

With an average of 9h and 12min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:18 am and sunset at 4:40 pm. On the last day of December, in Montague, sunrise is at 7:37 am and sunset at 4:49 pm PST.

Sunshine

The month with the least sunshine in Montague is December, with an average of 5.7h of sunshine.

UV index

The months with the lowest UV index in Montague are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.
Note: In December, the UV index of 2 transforms into the following advice:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.

Frequently asked questions

What part of the year is the coldest in Montague?

December is the coldest month, with an average high-temperature of 41.5°F (5.3°C) and an average low-temperature of 27.1°F (-2.7°C).

How cold is December in Montague?

An average high-temperature, in December, in Montague, is 41.5°F (5.3°C) and the average low-temperature is 27.1°F (-2.7°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is evaluated at 86°F (30°C).

What is the average humidity in December in Montague?

In Montague, the average relative humidity in December is 80%.

What is the wettest month in Montague?

The month with the most rainfall is December, when the rain falls for 12.5 days and typically aggregates up to 2.56" (65mm) of precipitation.

How much does it rain in Montague in December?

In December, in Montague, the rain falls for 12.5 days. Throughout December, 2.56" (65mm) of precipitation is accumulated.

How much does it snow in Montague in December?

In Montague, during December, snow falls for 6.6 days and regularly aggregates up to 3.98" (101mm) of snow.

What is the month with the shortest days in Montague?

The month with the shortest days is December, with an average of 9h and 12min of daylight.

What is the average length of the day in December in Montague?

In December, the average day length in Montague is 9h and 13min.

When are sunrise and sunset in December in Montague?

In December, on the first day of the month, sunrise is at 7:18 am and sunset at 4:40 pm. On the last day of the month, in Montague, California, sunrise is at 7:37 am and sunset at 4:49 pm PST.

What is the month with the least sunshine in Montague?

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

How many hours of sunshine does Montague have in December?

The average sunshine duration in December in Montague, California, is 5.7h.

What is the month with the lowest UV index in Montague?

The months with the lowest UV index in Montague are January through March, November and December, with an average maximum UV index of 2.

How high is the UV index in December in Montague?

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Montague, CA

Average temperature in December - Montague, CA
  • Average high temperature in December: 41.5°F

The warmest months (with the highest average high temperature) are July and August (84.6°F).
The month with the lowest average high temperature is December (41.5°F).

  • Average low temperature in December: 27.1°F

The month with the highest average low temperature is August (50.7°F).
The coldest month (with the lowest average low temperature) is December (27.1°F).

Average pressure in December
Montague, CA

Average pressure in December - Montague, CA
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).

Average wind speed in December
Montague, CA

Average wind speed in December - Montague, CA
  • Average wind speed in December: 5mph

The windiest month (with the highest average wind speed) is March (5.7mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).

Average humidity in December
Montague, CA

Average humidity in December - Montague, CA
  • Average humidity in December: 80%

The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (50%).

Average rainfall in December
Montague, CA

Average rainfall in December - Montague, CA
  • Average rainfall in December: 2.56"

The wettest month (with the highest rainfall) is December (2.56").
The driest month (with the least rainfall) is July (0.16").

Average rainfall days in December
Montague, CA

Average rainfall days in December - Montague, CA
  • Average rainfall days in December: 12.5 days

The month with the highest number of rainy days is March (17.2 days).
The month with the least rainy days is August (3.5 days).

Average snowfall in December
Montague, CA

Average snowfall in December - Montague, CA
  • Average snowfall in December: 3.98"

The month with the highest snowfall is January (4.45").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Montague, CA

Average snowfall days in December - Montague, CA
  • Average snowfall days in December: 6.6 days

The month with the highest number of snowfall days is February (6.9 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in December / Average sunshine in December - Montague, CA
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in December: 5h and 4min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

Average sunshine days in December
Montague, CA

Average sunshine days in December - Montague, CA
  • Average sunshine days in December: 14.8 days

The month with the most sunshine days is August (25.3 days).
The month with the least sunshine days is March (11.5 days).

Average UV index in December
Montague, CA

Average UV index in December - Montague, CA
  • 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, March, November and December (UV index 2).

Average cloud cover in December
Montague, CA

Average cloud cover in December - Montague, CA
  • Average cloud cover in December: 41

The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 8).

Average visibility in December
Montague, CA

Average visibility in December - Montague, CA
  • Average visibility in December: 5mi

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

Montague, California, USA

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