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 snowfall 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
In Julian, California, December is the month with the lowest recorded average temperatures, measuring a high of 61.3°F (16.3°C) and a low of 44.6°F (7°C).Humidity
In Julian, the average relative humidity in December is 57%.Rainfall
In Julian, during December, the rain falls for 5.5 days and regularly aggregates up to 0.71" (18mm) of precipitation. Throughout the year, there are 62 rainfall days, and 6.38" (162mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. In Julian, in December, 2.52" (64mm) of snow is typically accumulated. In Julian, during the entire year, snow aggregates up to 22.01" (559mm).Daylight
December has the shortest days of the year in Julian, with an average of 10h and 0min of daylight.On the first day of December, sunrise is at 6:32 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 4:50 pm PST.
Sunshine
December has the least sunshine of the year, with an average of 6.7h of sunshine.UV index
The months with the lowest UV index are November and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 3 during December translates into these guidelines:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Frequently asked questions
What is the coldest month in Julian?
What is the temperature in December in Julian?
What is the average humidity in December in Julian?
How much does it rain in Julian in December?
How much does it snow in Julian in December?
What is the month with the shortest days in Julian?
What is the average length of the day in December in Julian?
When are sunrise and sunset in December in Julian?
What is the month with the least sunshine in Julian?
How long on average sun shines in December in Julian?
When is the lowest UV index in Julian?
How high is the UV index in December in Julian?
Average temperature in December
Julian, CA
- Average high temperature in December: 61.3°F
The warmest month (with the highest average high temperature) is August (87.3°F).
The month with the lowest average high temperature is December (61.3°F).
- Average low temperature in December: 44.6°F
The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is February (44.2°F).
Average pressure in December
Julian, CA
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Julian, CA
- Average wind speed in December: 5.1mph
The windiest month (with the highest average wind speed) is May (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.1mph).
Average humidity in December
Julian, CA
- Average humidity in December: 57%
The month with the highest relative humidity is May (62%).
The month with the lowest relative humidity is November (51%).
Average rainfall in December
Julian, CA
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is February (0.94").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in December
Julian, CA
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is March (7.6 days).
The month with the least rainy days is June (1.5 days).
Average snowfall in December
Julian, CA
- Average snowfall in December: 2.5"
The month with the highest snowfall is March (6.7").
The months with the least snowfall are June, July, August, September and October (0").
Average daylight in December /
Average sunshine in December
Julian, CA
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 6h and 4min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in December
Julian, CA
- Average sunshine days in December: 24 days
The month with the most sunshine days is June (27.5 days).
The month with the least sunshine days is July (19.4 days).
Average UV index in December
Julian, CA
- Average UV index in December: 3
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are November and December (UV index 3).
Average cloud cover in December
Julian, CA
- Average cloud cover in December: 23
The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in December
Julian, 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).
Julian, California, USA
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