December weather forecast
Finley, CA

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Weather in December

December, the first month of the winter in Finley, is also a fresh month, with an average temperature ranging between min 37.2°F (2.9°C) and max 52.9°F (11.6°C).

Temperature

Finley's temperature records reveal December as the coldest month, marked by average highs of 52.9°F (11.6°C) and lows of 37.2°F (2.9°C).

Humidity

The average relative humidity in December in Finley is 73%.

Rainfall

In Finley, in December, during 12.2 rainfall days, 3.62" (92mm) of precipitation is typically accumulated. In Finley, during the entire year, the rain falls for 88.1 days and collects up to 20.28" (515mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall in Finley. In Finley, California, in December, during 0.2 snowfall days, 0.08" (2mm) of snow is typically accumulated. In Finley, during the entire year, snow falls for 1.8 days and aggregates up to 1.26" (32mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 30min of daylight.
On the first day of the month, sunrise is at 7:12 am and sunset at 4:49 pm. On the last day of December, sunrise is at 7:30 am and sunset at 4:59 pm PST.

Sunshine

The month with the least sunshine in Finley is December, with an average of 5.3h of sunshine.

UV index

In December, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 3 during December translates into the following recommendations:
Act with care - The need to guard against sun damage is communicated. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
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Frequently asked questions

What are the coldest months in Finley?

In Finley, California, the average lowest temperatures are observed in December, with a high of 52.9°F (11.6°C) and a low of 37.2°F (2.9°C).

What are December temperatures in Finley?

In Finley, in December, the average high-temperature is 52.9°F (11.6°C), and the average low-temperature is 37.2°F (2.9°C). In September, the average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, is appraised at 86°F (30°C).

What is the average humidity in December in Finley?

In December, the average relative humidity is 73%.

How many days does it rain in December in Finley?

In December, the rain falls for 12.2 days. Throughout December, 3.62" (92mm) of precipitation is accumulated.

How many days does it snow in December in Finley?

In December, in Finley, California, it is snowing for 0.2 days. Throughout December, 0.08" (2mm) of snow is accumulated.

What is the month with the shortest days in Finley?

The month with the shortest days in Finley is December, with an average of 9h and 30min of daylight.

How many hours of daylight does Finley have in December?

The average day length in December is 9h and 29min.

What time are sunrise and sunset in December in Finley?

On the first day of December in Finley, sunrise is at 7:12 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:59 pm PST.

What is the month with the least sunshine in Finley?

December has the least sunshine of the year in Finley, California, with an average of 5.3h of sunshine.

How long on average sun shines in December in Finley?

In December, the average sunshine duration is 5.3h.

What is the UV index intensity in December in Finley?

The average daily maximum UV index in December in Finley, California, is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from unsafe 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
Finley, CA

Average temperature in December - Finley, CA
  • Average high temperature in December: 52.9°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is December (52.9°F).

  • Average low temperature in December: 37.2°F

The months with the highest average low temperature are July and August (56.7°F).
The coldest month (with the lowest average low temperature) is December (37.2°F).

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Average pressure in December
Finley, CA

Average pressure in December - Finley, CA
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).

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Average wind speed in December
Finley, CA

Average wind speed in December - Finley, CA
  • Average wind speed in December: 4.5mph

The windiest months (with the highest average wind speed) are April and May (5.5mph).
The calmest month (with the lowest average wind speed) is November (4.2mph).

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Average humidity in December
Finley, CA

Average humidity in December - Finley, CA
  • Average humidity in December: 73%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (48%).

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Average rainfall in December
Finley, CA

Average rainfall in December - Finley, CA
  • Average rainfall in December: 3.62"

The wettest month (with the highest rainfall) is February (3.94").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in December
Finley, CA

Average rainfall days in December - Finley, CA
  • Average rainfall days in December: 12.2 days

The month with the highest number of rainy days is March (15.2 days).
The month with the least rainy days is July (1.1 days).

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Average snowfall in December
Finley, CA

Average snowfall in December - Finley, CA
  • Average snowfall in December: 0.08"

The months with the highest snowfall are January and February (0.47").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in December
Finley, CA

Average snowfall days in December - Finley, CA
  • Average snowfall days in December: 0.2 days

The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Finley, CA
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 5h and 2min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

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Average sunshine days in December
Finley, CA

Average sunshine days in December - Finley, CA
  • Average sunshine days in December: 18 days

The month with the most sunshine days is July (29.7 days).
The month with the least sunshine days is March (14.3 days).

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Average UV index in December
Finley, CA

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

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is November (UV index 2).

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Average cloud cover in December
Finley, CA

Average cloud cover in December - Finley, CA
  • Average cloud cover in December: 42

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 5).

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Average visibility in December
Finley, CA

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

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

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Finley, California, USA

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