December weather forecast and climate
El Monte, CA

Weather in December

The first month of the winter, December, is still a comfortable month in El Monte, California, with average temperature varying between 63.5°F (17.5°C) and 47.3°F (8.5°C).

Temperature

The coldest month is December, with an average high-temperature of 63.5°F (17.5°C) and an average low-temperature of 47.3°F (8.5°C).

Humidity

The average relative humidity in El Monte is 52%.

Rainfall

December is the month with the most rainfall. Rain falls for 5 days and accumulates 1.22" (31mm) of precipitation.

Daylight

With an average of 9.9h of daylight, December has the shortest days of the year.

Sunshine

In El Monte, the average sunshine in December is 6.9h.

UV index

January, February, November and December, with an average maximum UV index of 4, are months with the lowest UV index in El Monte, California. A UV Index value of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 4 in December interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the coldest month in El Monte?

The coldest month in El Monte, California, is December, with an average high-temperature of 63.5°F (17.5°C) and an average low-temperature of 47.3°F (8.5°C).

What is the temperature in December in El Monte?

The average high-temperature, in December, is 63.5°F (17.5°C), while the average low-temperature is 47.3°F (8.5°C).

What is the average humidity in December in El Monte?

In El Monte, the average relative humidity in December is 52%.

How many days does it rain in December in El Monte?

In December, in El Monte, California, the rain falls for 5 days. Throughout December, 1.22" (31mm) of precipitation is accumulated.

What is the rainiest month in El Monte?

The month with the most rainfall in El Monte is December when the rain falls for 5 days and typically aggregates up to 1.22" (31mm) of precipitation.

What is the month with the shortest days in El Monte?

The month with the shortest days is December, with an average of 9.9h of daylight.

How many hours of daylight does El Monte have in December?

In El Monte, the average length of the day in December is 9.9h.

How many hours of sunshine does El Monte have in December?

In December, the average sunshine in El Monte, California, is 6.9h.

When is the lowest UV index in El Monte?

January, February, November and December, with an average maximum UV index of 4, are months with the lowest UV index.

What is the UV index reading in December in El Monte?

The average daily maximum UV index in December is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to the UV radiation.

Average temperature in December
El Monte, CA

Average temperature in December - El Monte, CA
  • Average high temperature in December: 63.5°F

The warmest month (with the highest average high temperature) is August (87.6°F).
The month with the lowest average high temperature is December (63.5°F).

  • Average low temperature in December: 47.3°F

The month with the highest average low temperature is August (64.9°F).
The coldest months (with the lowest average low temperature) are February and December (47.3°F).

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Average pressure in December
El Monte, CA

Average pressure in December - El Monte, CA
  • Average pressure in December: 30.07"

The month with the highest atmospheric pressure is January (30.1").
The month with the lowest atmospheric pressure is June (29.88").

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Average wind speed in December
El Monte, CA

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

The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest months (with the lowest average wind speed) are September and October (4.5mph).

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Average humidity in December
El Monte, CA

Average humidity in December - El Monte, CA
  • Average humidity in December: 52%

The month with the highest relative humidity is June (58%).
The month with the lowest relative humidity is November (46%).

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Average rainfall in December
El Monte, CA

Average rainfall in December - El Monte, CA
  • Average rainfall in December: 1.22"

The wettest month (with the highest rainfall) is December (1.22").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in December
El Monte, CA

Average rainfall days in December - El Monte, CA
  • Average rainfall days in December: 5 days

The month with the highest number of rainy days is March (5.3 days).
The month with the least rainy days is June (1.2 days).

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Average daylight in December /
Average sunshine in December
El Monte, CA

Average daylight in December / Average sunshine in December - El Monte, CA
  • Average daylight in December: 9.9h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in December: 6.9h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is February (Average sunshine: 6.8h).

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Average sunshine days in December
El Monte, CA

Average sunshine days in December - El Monte, CA
  • Average sunshine days in December: 24.9 days

The month with the most sunshine days is June (27.6 days).
The month with the least sunshine days is February (22.6 days).

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Average UV index in December
El Monte, CA

Average UV index in December - El Monte, CA
  • Average UV index in December: 4

The month with the highest UV index is August (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 4).

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Average cloud cover in December
El Monte, CA

Average cloud cover in December - El Monte, CA
  • Average cloud cover in December: 22

The month with the most cloud cover is December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in December
El Monte, CA

Average visibility in December - El Monte, CA
  • Average visibility in December: 6mi

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

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