December weather forecast
Fresno, CA

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The artificial Millerton Lake near Fresno in California
The artificial Millerton Lake near Fresno in California

Weather in December

The final month of the year, December, showcases a full transition into winter. With December experiencing the highest rainfall throughout the year at 1.57 in, the city is subjected to the seasonal elements. Concomitantly, the ambient high temperatures drop further, reinforcing the onset of the cold winter season. Reduced hours of sunlight, coupled with increased cloud cover, create a rather somber atmosphere, typical of winter months. Reflecting on these parameters, it is clear that December's weather marks the zenith of winter with its lower temperatures and heightened precipitation.

Temperature

Fresno records the coldest temperatures in December, averaging a high of 56.1°F and a low of 41.4°F.

Humidity

The average relative humidity in December is 64%.

Rainfall

In Fresno, in December, during 7.8 rainfall days, 1.57" of precipitation is typically accumulated. In Fresno, California, during the entire year, the rain falls for 59.3 days and collects up to 10.43" of precipitation.

Daylight

December has the shortest days of the year, with an average of 9h and 42min of daylight.
On the first day of December in Fresno, sunrise is at 6:53 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 4:52 pm PST.

Sunshine

With an average of 6.5h of sunshine, December has the least sunshine of the year.

UV index

The months with the lowest UV index in Fresno, California, are January, November and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 3 during December translates into the following guidance:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Minimize direct exposure to the Sun during midday when its radiation is at its peak. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
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FAQ

What is the coldest time of year in Fresno?

Fresno reaches its average lowest temperatures in December, measuring 56.1°F at the peak and 41.4°F at the lowest.

What is the temperature in December in Fresno?

The average high-temperature, in December, in Fresno, is 56.1°F, while the average low-temperature is 41.4°F. In May, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, is appraised at 80.6°F.

What is the average humidity in December in Fresno?

The average relative humidity in December in Fresno is 64%.

How many days does it rain in December in Fresno?

In December, in Fresno, the rain falls for 7.8 days. Throughout December, 1.57" of precipitation is accumulated.

What is the month with the shortest days in Fresno?

With an average of 9h and 42min of daylight, December has the shortest days of the year in Fresno.

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

The average day length in December in Fresno, California, is 9h and 42min.

When are sunrise and sunset in December in Fresno?

In December, on the first day of the month, sunrise is at 6:53 am and sunset at 4:43 pm. On the last day of the month, in Fresno, California, sunrise is at 7:11 am and sunset at 4:52 pm PST.

What is the month with the least sunshine in Fresno?

With an average of 6.5h of sunshine, December has the least sunshine of the year in Fresno, California.

How long on average sun shines in December in Fresno?

The average sunshine duration in December in Fresno, California, is 6.5h.

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

The months with the lowest UV index in Fresno, California, are January, November and December, with an average maximum UV index of 3.

How high is the UV index in December in Fresno?

In December, the average daily maximum UV index in Fresno, California, is 3. A UV Index estimate of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Fresno, CA

Average temperature in December - Fresno, CA
  • Average high temperature in December: 56.1°F

The warmest month (with the highest average high temperature) is July (99.7°F).
The month with the lowest average high temperature is December (56.1°F).

  • Average low temperature in December: 41.4°F

The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is December (41.4°F).

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Average pressure in December
Fresno, CA

Average pressure in December - Fresno, CA
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in December
Fresno, CA

Average wind speed in December - Fresno, CA
  • Average wind speed in December: 3.9mph

The windiest month (with the highest average wind speed) is June (5.8mph).
The calmest month (with the lowest average wind speed) is November (3.8mph).

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Average humidity in December
Fresno, CA

Average humidity in December - Fresno, CA
  • Average humidity in December: 64%

The month with the highest relative humidity is January (65%).
The month with the lowest relative humidity is July (28%).

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Average rainfall in December
Fresno, CA

Average rainfall in December - Fresno, CA
  • Average rainfall in December: 1.57"

The wettest month (with the highest rainfall) is March (2.01").
The driest months (with the least rainfall) are June and August (0.08").

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Average rainfall days in December
Fresno, CA

Average rainfall days in December - Fresno, CA
  • Average rainfall days in December: 7.8 days

The month with the highest number of rainy days is March (10.3 days).
The month with the least rainy days is August (1.2 days).

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

Average daylight in December / Average sunshine in December - Fresno, CA
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in December: 6h and 3min

The months with the most sunshine are June, July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).

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Average sunshine days in December
Fresno, CA

Average sunshine days in December - Fresno, CA
  • Average sunshine days in December: 22.5 days

The month with the most sunshine days is August (28.2 days).
The month with the least sunshine days is March (19.5 days).

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Average UV index in December
Fresno, CA

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

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

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Average cloud cover in December
Fresno, CA

Average cloud cover in December - Fresno, CA
  • Average cloud cover in December: 26

The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 4).

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Average visibility in December
Fresno, CA

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

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