December weather forecastNipomo, CA
December
Weather in December
The first month of the winter, December, is also an enjoyable month in Nipomo, California, with an average temperature varying between 46°F (7.8°C) and 62.2°F (16.8°C).Temperature
December, having an average high-temperature of 62.2°F (16.8°C) and an average low-temperature of 46°F (7.8°C), is the coldest month.Humidity
In Nipomo, the average relative humidity in December is 61%.Rainfall
In Nipomo, during December, the rain falls for 5.2 days and regularly aggregates up to 0.71" (18mm) of precipitation. Throughout the year, there are 39.5 rainfall days, and 5.51" (140mm) of precipitation is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 48min of daylight.On the first day of December, sunrise is at 6:52 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 5:00 pm PST.
Sunshine
The average sunshine in December is 6.5h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 4 during December translates into these guidelines:
Act with care - Obligation to protect against skin and eye damage is highlighted. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Nipomo, CA
- Average high temperature in December: 62.2°F
The warmest month (with the highest average high temperature) is September (82°F).
The month with the lowest average high temperature is December (62.2°F).
- Average low temperature in December: 46°F
The month with the highest average low temperature is September (59.7°F).
The coldest month (with the lowest average low temperature) is February (45.1°F).
Average pressure in December
Nipomo, CA
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).
Average wind speed in December
Nipomo, CA
- Average wind speed in December: 6mph
The windiest months (with the highest average wind speed) are April and May (6.6mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Nipomo, CA
- Average humidity in December: 61%
The month with the highest relative humidity is March (67%).
The month with the lowest relative humidity is October (55%).
Average rainfall in December
Nipomo, CA
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is March (1.34").
The driest month (with the least rainfall) is June (0").
Average rainfall days in December
Nipomo, CA
- Average rainfall days in December: 5.2 days
The month with the highest number of rainy days is March (7.2 days).
The month with the least rainy days is June (0.7 days).
Average daylight in December /
Average sunshine in December
Nipomo, CA
- Average daylight in December: 9h and 48min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 6h and 30min
The months with the most sunshine are June, July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 24min).
Average sunshine days in December
Nipomo, CA
- Average sunshine days in December: 25.1 days
The month with the most sunshine days is August (29.7 days).
The month with the least sunshine days is February (21.6 days).
Average UV index in December
Nipomo, CA
- Average UV index in December: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in December
Nipomo, CA
- Average cloud cover in December: 25
The months with the most cloud cover are February and March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in December
Nipomo, 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).
