December weather forecast
Colton, CA

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Weather in December

The first month of the winter, December, is still a refreshing month in Colton, California, with an average temperature ranging between max 59.9°F (15.5°C) and min 43.7°F (6.5°C).

Temperature

Colton's coldest month, December, registers temperatures that range from a high of 59.9°F (15.5°C) to a low of 43.7°F (6.5°C).

Humidity

In December, the average relative humidity is 51%.

Rainfall

The month with the most rainfall is December, when the rain falls for 6 days and typically aggregates up to 1.42" (36mm) of precipitation.

Snowfall

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

Daylight

The month with the shortest days in Colton is December, with an average of 9h and 54min of daylight.
On the first day of the month, sunrise is at 6:37 am and sunset at 4:39 pm. On the last day of December, sunrise is at 6:54 am and sunset at 4:50 pm PST.

Sunshine

December has the least sunshine of the year in Colton, with an average of 6.9h of sunshine.

UV index

December is the month with the lowest UV index in Colton, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The average daily UV index of 3 in December transforms into the following instructions:
Undertake precautions - It is suggested to shield oneself from sunburn. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
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Frequently asked questions

What time of the year is the coldest in Colton?

December, characterized by an average high temperature of 59.9°F (15.5°C) and a low temperature of 43.7°F (6.5°C), is generally the coldest month in Colton, California.

What are the temperatures in Colton in December?

In December, the average high-temperature and low-temperature are 59.9°F (15.5°C) and 43.7°F (6.5°C) respectively. In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is estimated at 87.8°F (31°C).

What is the average humidity in December in Colton?

In December, the average relative humidity is 51%.

What is the rainiest month in Colton?

The month with the most rainfall in Colton, California, is December, when the rain falls for 6 days and typically aggregates up to 1.42" (36mm) of precipitation.

How much does it rain in Colton in December?

In Colton, California, during December, the rain falls for 6 days and regularly aggregates up to 1.42" (36mm) of precipitation.

When it does not snow in Colton?

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

What is the month with the shortest days in Colton?

December has the shortest days of the year in Colton, California, with an average of 9h and 54min of daylight.

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

In December, the average day length is 9h and 56min.

What time are sunrise and sunset in December in Colton?

On the first day of December, sunrise is at 6:37 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 4:50 pm PST.

What is the month with the least sunshine in Colton?

With an average of 6.9h of sunshine, December has the least sunshine of the year in Colton.

How long on average sun shines in December in Colton?

The average sunshine duration in December is 6.9h.

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

With an average maximum UV index of 3, December is the month with the lowest UV index.

What is the UV index reading in December in Colton?

The average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a medium health risk 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
Colton, CA

Average temperature in December - Colton, CA
  • Average high temperature in December: 59.9°F

The warmest month (with the highest average high temperature) is August (91.9°F).
The month with the lowest average high temperature is December (59.9°F).

  • Average low temperature in December: 43.7°F

The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (43.5°F).

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Average pressure in December
Colton, CA

Average pressure in December - Colton, 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 (29.85"Hg).

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Average wind speed in December
Colton, CA

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

The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).

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Average humidity in December
Colton, CA

Average humidity in December - Colton, CA
  • Average humidity in December: 51%

The month with the highest relative humidity is February (53%).
The month with the lowest relative humidity is August (38%).

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Average rainfall in December
Colton, CA

Average rainfall in December - Colton, CA
  • Average rainfall in December: 1.42"

The wettest month (with the highest rainfall) is December (1.42").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in December
Colton, CA

Average rainfall days in December - Colton, CA
  • Average rainfall days in December: 6 days

The month with the highest number of rainy days is March (6.7 days).
The month with the least rainy days is June (1.2 days).

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Average snowfall days in December
Colton, CA

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

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

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

Average daylight in December / Average sunshine in December - Colton, 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: 6h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).

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Average sunshine days in December
Colton, CA

Average sunshine days in December - Colton, CA
  • Average sunshine days in December: 24.3 days

The months with the most sunshine days are June and October (27.9 days).
The month with the least sunshine days is February (21.7 days).

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Average UV index in December
Colton, CA

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

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

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Average cloud cover in December
Colton, CA

Average cloud cover in December - Colton, CA
  • Average cloud cover in December: 21

The months with the most cloud cover are February and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in December
Colton, CA

Average visibility in December - Colton, 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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Colton, California, USA

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