December weather forecast
Grenada, CA

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Weather in December

December, the first month of the winter in Grenada, is still a cold month, with an average temperature fluctuating between 26.6°F (-3°C) and 41.5°F (5.3°C).

Temperature

With average temperatures fluctuating between a high of 41.5°F (5.3°C) and a low of 26.6°F (-3°C), December stands out as the coldest month.

Humidity

In Grenada, the average relative humidity in December is 81%.

Rainfall

December is the month with the most rainfall. Rain falls for 12.8 days and accumulates 2.99" (76mm) of precipitation.

Snowfall

Months with snowfall in Grenada are January through April, October through December. In Grenada, during December, snow falls for 6.1 days and regularly aggregates up to 4.13" (105mm) of snow. In Grenada, during the entire year, snow falls for 30.9 days and aggregates up to 20.47" (520mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 12min of daylight.
On the first day of December, sunrise is at 7:18 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:50 pm PST.

Sunshine

The months with the least sunshine are January and December, with an average of 5.7h of sunshine.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the average person.
Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. To guard against the harmful effects of the Sun, minimize exposure during midday. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.

Frequently asked questions

What month is the coldest?

December, characterized by an average high temperature of 41.5°F (5.3°C) and a low temperature of 26.6°F (-3°C), is generally the coldest month.

Is it cold during December?

In December, in Grenada, the average high-temperature is 41.5°F (5.3°C), and the average low-temperature is 26.6°F (-3°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in August is appraised at 86°F (30°C).

What is the average humidity in December?

The average relative humidity in December is 81%.

What is the wettest month?

The month with the most rainfall is December, when the rain falls for 12.8 days and typically aggregates up to 2.99" (76mm) of precipitation.

How much does it rain in December?

In Grenada, California, in December, during 12.8 rainfall days, 2.99" (76mm) of precipitation is typically accumulated.

How much does it snow in December?

In Grenada, in December, during 6.1 snowfall days, 4.13" (105mm) of snow is typically accumulated.

What is the month with the shortest days?

December has the shortest days of the year in Grenada, with an average of 9h and 12min of daylight.

What is the average length of the day in December?

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

When are sunrise and sunset in December?

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, sunrise is at 7:36 am and sunset at 4:50 pm PST.

What are the months with the least sunshine?

The months with the least sunshine are January and December, with an average of 5.7h of sunshine.

How many hours of sunshine does Grenada have in December?

In December, the average sunshine duration is 5.7h.

What is the month with the lowest UV index?

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

How high is the UV index in December in Grenada?

The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to Sun's UV rays.
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
Grenada, CA

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

The warmest months (with the highest average high temperature) are July and August (84.2°F).
The month with the lowest average high temperature is December (41.5°F).

  • Average low temperature in December: 26.6°F

The month with the highest average low temperature is August (50.2°F).
The coldest month (with the lowest average low temperature) is December (26.6°F).

Average pressure in December
Grenada, CA

Average pressure in December - Grenada, 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
Grenada, CA

Average wind speed in December - Grenada, CA
  • Average wind speed in December: 4.8mph

The windiest month (with the highest average wind speed) is March (5.4mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).

Average humidity in December
Grenada, CA

Average humidity in December - Grenada, CA
  • Average humidity in December: 81%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (52%).

Average rainfall in December
Grenada, CA

Average rainfall in December - Grenada, CA
  • Average rainfall in December: 2.99"

The wettest month (with the highest rainfall) is December (2.99").
The driest month (with the least rainfall) is July (0.16").

Average rainfall days in December
Grenada, CA

Average rainfall days in December - Grenada, CA
  • Average rainfall days in December: 12.8 days

The month with the highest number of rainy days is March (16.7 days).
The month with the least rainy days is July (3.2 days).

Average snowfall in December
Grenada, CA

Average snowfall in December - Grenada, CA
  • Average snowfall in December: 4.13"

The month with the highest snowfall is February (5.39").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Grenada, CA

Average snowfall days in December - Grenada, CA
  • Average snowfall days in December: 6.1 days

The month with the highest number of snowfall days is February (7.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 6min).
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 months with the least sunshine are January and December (Average sunshine: 5h and 42min).

Average sunshine days in December
Grenada, CA

Average sunshine days in December - Grenada, CA
  • Average sunshine days in December: 14.4 days

The month with the most sunshine days is August (25.7 days).
The month with the least sunshine days is March (11 days).

Average UV index in December
Grenada, CA

Average UV index in December - Grenada, 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
Grenada, CA

Average cloud cover in December - Grenada, CA
  • Average cloud cover in December: 43

The months with the most cloud cover are March and December (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 8).

Average visibility in December
Grenada, CA

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

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

Grenada, California, USA

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