December weather forecast
Galt, CA

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Weather in December

The first month of the winter, December, is also a fresh month in Galt, California, with an average temperature ranging between min 41°F (5°C) and max 55°F (12.8°C).

Temperature

With average temperatures fluctuating between a high of 55°F (12.8°C) and a low of 41°F (5°C), December stands out as the coldest month.

Humidity

In Galt, California, the average relative humidity in December is 71%.

Rainfall

In Galt, in December, during 8.2 rainfall days, 1.97" (50mm) of precipitation is typically accumulated. Throughout the year, in Galt, there are 63.8 rainfall days, and 12.6" (320mm) of precipitation is accumulated.

Snowfall

December is the only month when snow falls. December has the most snowfall days of the year in Galt. Snow falls for 0.1 days.

Daylight

The month with the shortest days in Galt is December, with an average of 9h and 36min of daylight.
On the first day of the month, sunrise is at 7:03 am and sunset at 4:45 pm. On the last day of December, in Galt, California, sunrise is at 7:21 am and sunset at 4:55 pm PST.

Sunshine

December has the least sunshine of the year in Galt, with an average of 5.9h of sunshine.

UV index

The months with the lowest UV index in Galt are January, February, November and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, the average maximum UV index of 3 translates into the following recommendations:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
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Frequently asked questions

What are the coldest months in Galt?

The coldest period in Galt tends to be December, when average temperatures fluctuate between a high of 55°F (12.8°C) and a low of 41°F (5°C).

What are the temperatures in Galt in December?

An average high-temperature, in December, in Galt, is 55°F (12.8°C) and the average low-temperature is 41°F (5°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, in September is calculated to be 89.6°F (32°C).

What is the average humidity in December in Galt?

In December, the average relative humidity in Galt, California, is 71%.

How many days does it rain in December in Galt?

In Galt, in December, it is raining for 8.2 days, with typically 1.97" (50mm) of accumulated precipitation.

What is the snowiest month in Galt?

December has the most snowfall days of the year in Galt. Snow falls for 0.1 days.

When does it start snowing in Galt?

December is the first month it typically snows. Throughout December, there are 0.1 snowfall days.

What is the month with the shortest days in Galt?

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

How many hours of daylight does Galt have in December?

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

When are sunrise and sunset in December in Galt?

In December, on the first day of the month, sunrise is at 7:03 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:55 pm PST.

What is the month with the least sunshine in Galt?

With an average of 5.9h of sunshine, December has the least sunshine of the year in Galt.

How long on average sun shines in December in Galt?

In December, the average sunshine duration in Galt, California, is 5.9h.

When is the lowest UV index in Galt?

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

What is the UV index reading in December in Galt?

The average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to 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
Galt, CA

Average temperature in December - Galt, CA
  • Average high temperature in December: 55°F

The warmest month (with the highest average high temperature) is July (93.9°F).
The month with the lowest average high temperature is December (55°F).

  • Average low temperature in December: 41°F

The month with the highest average low temperature is August (58.8°F).
The coldest month (with the lowest average low temperature) is December (41°F).

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Average pressure in December
Galt, CA

Average pressure in December - Galt, 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).

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Average wind speed in December
Galt, CA

Average wind speed in December - Galt, CA
  • Average wind speed in December: 5.2mph

The windiest months (with the highest average wind speed) are February and June (5.8mph).
The calmest month (with the lowest average wind speed) is November (4.4mph).

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Average humidity in December
Galt, CA

Average humidity in December - Galt, CA
  • Average humidity in December: 71%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (45%).

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Average rainfall in December
Galt, CA

Average rainfall in December - Galt, CA
  • Average rainfall in December: 1.97"

The wettest month (with the highest rainfall) is February (2.4").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in December
Galt, CA

Average rainfall days in December - Galt, CA
  • Average rainfall days in December: 8.2 days

The month with the highest number of rainy days is March (12.4 days).
The month with the least rainy days is June (0.9 days).

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Average snowfall days in December
Galt, CA

Average snowfall days in December - Galt, 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).

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

Average daylight in December / Average sunshine in December - Galt, 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 5min

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 54min).

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Average sunshine days in December
Galt, CA

Average sunshine days in December - Galt, CA
  • Average sunshine days in December: 21.8 days

The month with the most sunshine days is August (29.3 days).
The month with the least sunshine days is March (17.8 days).

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Average UV index in December
Galt, CA

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

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

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Average cloud cover in December
Galt, CA

Average cloud cover in December - Galt, CA
  • Average cloud cover in December: 34

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 4).

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Average visibility in December
Galt, CA

Average visibility in December - Galt, 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).

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Galt, California, USA

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