December weather forecast
Amboy, CA

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Weather in December

The first month of the winter, December, is also a moderate month in Amboy, California, with an average temperature varying between 56.5°F (13.6°C) and 42.4°F (5.8°C).

Temperature

The coldest month is December, with an average high-temperature of 56.5°F (13.6°C) and an average low-temperature of 42.4°F (5.8°C).

Humidity

The most humid month is December, with an average relative humidity of 43%.

Rainfall

In Amboy, in December, during 4.6 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. Throughout the year, there are 42.3 rainfall days, and 4.45" (113mm) of precipitation is accumulated.

Snowfall

In Amboy, snow does not fall in January, March through December.

Daylight

With an average of 9h and 54min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 6:32 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 4:43 pm PST.

Sunshine

December has the least sunshine of the year, with an average of 7.1h of sunshine.

UV index

The months with the lowest UV index are November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: A daily maximum UV index of 3 in December translates into the following instructions:
Act with care - Obligation to protect against skin and eye damage is highlighted. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Tightly woven clothing, when worn loosely, shields effectively against the Sun.

Frequently asked questions

What month is the coldest?

December stands out as Amboy's coldest month, with an average high-temperature of 56.5°F (13.6°C) and a low-temperature of 42.4°F (5.8°C).

What are December temperatures?

The average high-temperature and low-temperature during December are 56.5°F (13.6°C) and 42.4°F (5.8°C) respectively.

What is the most humid month?

December is the most humid month, with an average relative humidity of 43%.

What is the average humidity in December?

In Amboy, the average relative humidity in December is 43%.

How many days does it rain in December?

In Amboy, during December, the rain falls for 4.6 days and regularly aggregates up to 0.67" (17mm) of precipitation.

When it does not snow?

January, March through December are months without snowfall.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 54min of daylight.

What is the average length of the day in December?

The average day length in December is 9h and 53min.

When are sunrise and sunset in December?

On the first day of December, sunrise is at 6:32 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 4:43 pm PST.

What is the month with the least sunshine?

The month with the least sunshine is December, with an average of 7.1h of sunshine.

How many hours of sunshine does Amboy have in December?

The average sunshine duration in December is 7.1h.

What is the month with the lowest UV index?

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 Amboy, the average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a moderate health threat from unsafe 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
Amboy, CA

Average temperature in December - Amboy, CA
  • Average high temperature in December: 56.5°F

The warmest month (with the highest average high temperature) is July (98.1°F).
The month with the lowest average high temperature is December (56.5°F).

  • Average low temperature in December: 42.4°F

The month with the highest average low temperature is August (78.4°F).
The coldest month (with the lowest average low temperature) is December (42.4°F).

Average pressure in December
Amboy, CA

Average pressure in December - Amboy, CA
  • Average pressure in December: 30.07"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.78"Hg).

Average wind speed in December
Amboy, CA

Average wind speed in December - Amboy, CA
  • Average wind speed in December: 6.8mph

The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest months (with the lowest average wind speed) are August and September (6.2mph).

Average humidity in December
Amboy, CA

Average humidity in December - Amboy, CA
  • Average humidity in December: 43%

The month with the highest relative humidity is December (43%).
The month with the lowest relative humidity is June (20%).

Average rainfall in December
Amboy, CA

Average rainfall in December - Amboy, CA
  • Average rainfall in December: 0.67"

The wettest month (with the highest rainfall) is July (0.87").
The driest month (with the least rainfall) is June (0.08").

Average rainfall days in December
Amboy, CA

Average rainfall days in December - Amboy, CA
  • Average rainfall days in December: 4.6 days

The month with the highest number of rainy days is July (6.9 days).
The month with the least rainy days is June (1.1 days).

Average snowfall in December
Amboy, CA

Average snowfall in December - Amboy, 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").

Average snowfall days in December
Amboy, CA

Average snowfall days in December - Amboy, CA
  • Average snowfall days in December: 0 days

The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).

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

Average daylight in December / Average sunshine in December - Amboy, CA
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in December: 7h and 1min

The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 6min).

Average sunshine days in December
Amboy, CA

Average sunshine days in December - Amboy, CA
  • Average sunshine days in December: 25 days

The month with the most sunshine days is May (28.7 days).
The month with the least sunshine days is July (20.4 days).

Average UV index in December
Amboy, CA

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

The months with the highest UV index are June, July and August (UV index 8).
The months with the lowest UV index are November and December (UV index 3).

Average cloud cover in December
Amboy, CA

Average cloud cover in December - Amboy, CA
  • Average cloud cover in December: 18

The month with the most cloud cover is December (Cloud cover 18).
The month with the least cloud cover is June (Cloud cover 4).

Average visibility in December
Amboy, CA

Average visibility in December - Amboy, 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).

Amboy, California, USA

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