December weather forecastFresno, CA
December
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
December, on average, is the coldest month, registering a high temperature of 56.1°F (13.4°C) and a low of 41.4°F (5.2°C).Humidity
In December, the average relative humidity is 64%.Rainfall
In Fresno, during December, the rain falls for 7.8 days and regularly aggregates up to 1.57" (40mm) of precipitation. Throughout the year, there are 59.3 rainfall days, and 10.43" (265mm) of precipitation is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 42min of daylight.On the first day of the month, sunrise is at 6:53 am and sunset at 4:43 pm. On the last day of December, in Fresno, sunrise is at 7:11 am and sunset at 4:53 pm PST.
Sunshine
With an average of 6.5h of sunshine, December has the least sunshine of the year.UV index
January, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: A maximum daily UV index of 3 during December morphs into the following directions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
Average daylight in December /
Average sunshine in December
Fresno, CA
- Average daylight in December: 9h and 42min
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 30min
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).
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).
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).
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).
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).
