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 snowfall 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
With an average high-temperature of 54.9°F (12.7°C) and an average low-temperature of 38.5°F (3.6°C), December is the coldest month.Humidity
In Asti, the average relative humidity in December is 75%.Rainfall
In Asti, during December, the rain falls for 12.1 days and regularly aggregates up to 3.66" (93mm) of precipitation. In Asti, during the entire year, the rain falls for 82.4 days and collects up to 20.75" (527mm) of precipitation.Snowfall
In Asti, snow does not fall in January, March through December.Daylight
The month with the shortest days in Asti, California, is December, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:11 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:00 pm PST.
Sunshine
December has the least sunshine of the year in Asti, with an average of 5.4h of sunshine.UV index
The average daily maximum UV index in December is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In December, a daily UV index of 3 turns into the following recommendations:
Take precautions - Protection against sunburn is recommended. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Frequently asked questions
What part of the year is the coldest in Asti?
What is the usual temperature for Asti in December?
What is the average humidity in December in Asti?
How many days does it rain in December in Asti?
When it does not snow in Asti?
What is the month with the shortest days in Asti?
How many hours of daylight does Asti have in December?
When are sunrise and sunset in December in Asti?
What is the month with the least sunshine in Asti?
How many hours of sunshine does Asti have in December?
How high is the UV index in December in Asti?
Average temperature in December
Asti, CA
- Average high temperature in December: 54.9°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is December (54.9°F).
- Average low temperature in December: 38.5°F
The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is December (38.5°F).
Average pressure in December
Asti, CA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in December
Asti, CA
- Average wind speed in December: 4.8mph
The windiest month (with the highest average wind speed) is May (6.3mph).
The calmest month (with the lowest average wind speed) is November (4.6mph).
Average humidity in December
Asti, CA
- Average humidity in December: 75%
The month with the highest relative humidity is March (77%).
The months with the lowest relative humidity are July and September (57%).
Average rainfall in December
Asti, CA
- Average rainfall in December: 3.66"
The wettest month (with the highest rainfall) is February (4.25").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Asti, CA
- Average rainfall days in December: 12.1 days
The month with the highest number of rainy days is March (14.6 days).
The months with the least rainy days are July and August (1.2 days).
Average snowfall in December
Asti, CA
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.16").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Asti, CA
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Asti, CA
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in December
Asti, CA
- Average sunshine days in December: 18 days
The month with the most sunshine days is July (29.4 days).
The month with the least sunshine days is March (15.2 days).
Average UV index in December
Asti, CA
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is November (UV index 2).
Average cloud cover in December
Asti, CA
- Average cloud cover in December: 41
The month with the most cloud cover is March (Cloud cover 43).
The months with the least cloud cover are July and August (Cloud cover 6).
Average visibility in December
Asti, 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).
Asti, California, USA
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