Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The coldest temperatures occur during December, when averages reach a peak of 56.3°F (13.5°C) and a low of 39.7°F (4.3°C).Humidity
The average relative humidity in December in Exeter is 62%.Rainfall
In Exeter, in December, it is raining for 7 days, with typically 1.65" (42mm) of accumulated precipitation. Throughout the year, in Exeter, there are 55.9 rainfall days, and 11.65" (296mm) of precipitation is accumulated.Daylight
With an average of 9h and 42min of daylight, December has the shortest days of the year in Exeter.On the first day of the month, sunrise is at 6:50 am and sunset at 4:41 pm. On the last day of December, sunrise is at 7:07 am and sunset at 4:52 pm PST.
Sunshine
The months with the least sunshine are February and December, with an average of 6.9h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Exeter. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In December, a regular UV index of 3 translates into these guidelines:
Make use of precautions - It is urged to ward off sun damage. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Frequently asked questions
What is the coldest time of year in Exeter?
What is the temperature in December in Exeter?
What is the average humidity in December in Exeter?
How much does it rain in Exeter in December?
What is the month with the shortest days in Exeter?
What is the average length of the day in December in Exeter?
When are sunrise and sunset in December in Exeter?
What are the months with the least sunshine in Exeter?
How many hours of sunshine does Exeter have in December?
When is the lowest UV index in Exeter?
What is the UV index reading in December in Exeter?
Average temperature in December
Exeter, CA
- Average high temperature in December: 56.3°F
The warmest month (with the highest average high temperature) is July (95.5°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in December: 39.7°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is December (39.7°F).
Average pressure in December
Exeter, CA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in December
Exeter, CA
- Average wind speed in December: 3.3mph
The windiest month (with the highest average wind speed) is June (4.6mph).
The calmest month (with the lowest average wind speed) is December (3.3mph).
Average humidity in December
Exeter, CA
- Average humidity in December: 62%
The month with the highest relative humidity is January (63%).
The month with the lowest relative humidity is August (29%).
Average rainfall in December
Exeter, CA
- Average rainfall in December: 1.65"
The wettest month (with the highest rainfall) is March (2.32").
The driest months (with the least rainfall) are June, July and August (0.04").
Average rainfall days in December
Exeter, CA
- Average rainfall days in December: 7 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 days).
Average daylight in December /
Average sunshine in December
Exeter, 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 5min
The months with the most sunshine are June and July (Average sunshine: 12h and 12min).
The months with the least sunshine are February and December (Average sunshine: 6h and 54min).
Average sunshine days in December
Exeter, CA
- Average sunshine days in December: 22.5 days
The month with the most sunshine days is August (28.9 days).
The month with the least sunshine days is March (19.8 days).
Average UV index in December
Exeter, 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, February, November and December (UV index 3).
Average cloud cover in December
Exeter, CA
- Average cloud cover in December: 20
The month with the most cloud cover is March (Cloud cover 22).
The months with the least cloud cover are July, August and September (Cloud cover 4).
Average visibility in December
Exeter, 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).
Exeter, California, USA
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