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
December is the month when Ramona, California, sees the lowest average temperatures, with a high of 62.8°F (17.1°C) and a low of 44.6°F (7°C).Humidity
The average relative humidity in December in Ramona is 58%.Rainfall
In Ramona, California, in December, it is raining for 5.4 days, with typically 0.75" (19mm) of accumulated precipitation. Throughout the year, in Ramona, there are 54.6 rainfall days, and 6.06" (154mm) of precipitation is accumulated.Daylight
December has the shortest days of the year, with an average of 10h and 0min of daylight.On the first day of the month, sunrise is at 6:33 am and sunset at 4:40 pm. On the last day of December, sunrise is at 6:50 am and sunset at 4:51 pm PST.
Sunshine
January, February and December, with an average of 6.8h of sunshine, are months with the least sunshine.UV index
The month with the lowest UV index is December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In December, a daily maximum UV index of 3 leads to the following instructions:
Take necessary precautions - Suggestions to elude sunburn are provided. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest in Ramona?
What are the temperatures in Ramona in December?
What is the average humidity in December in Ramona?
How many days does it rain in December in Ramona?
What is the month with the shortest days in Ramona?
What is the average length of the day in December in Ramona?
When is the sunrise / sunset in December in Ramona?
What is the month with the least sunshine in Ramona?
How many hours of sunshine does Ramona have in December?
When is the lowest UV index in Ramona?
How high is the UV index in December in Ramona?
Average temperature in December
Ramona, CA
- Average high temperature in December: 62.8°F
The warmest month (with the highest average high temperature) is August (87.1°F).
The month with the lowest average high temperature is December (62.8°F).
- Average low temperature in December: 44.6°F
The month with the highest average low temperature is August (63.7°F).
The coldest months (with the lowest average low temperature) are February and December (44.6°F).
Average pressure in December
Ramona, 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 (29.86"Hg).
Average wind speed in December
Ramona, CA
- Average wind speed in December: 5mph
The windiest month (with the highest average wind speed) is April (5.3mph).
The calmest months (with the lowest average wind speed) are August and September (4mph).
Average humidity in December
Ramona, CA
- Average humidity in December: 58%
The month with the highest relative humidity is May (65%).
The month with the lowest relative humidity is November (52%).
Average rainfall in December
Ramona, CA
- Average rainfall in December: 0.75"
The wettest month (with the highest rainfall) is February (1.02").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in December
Ramona, CA
- Average rainfall days in December: 5.4 days
The month with the highest number of rainy days is March (7.4 days).
The month with the least rainy days is June (1.5 days).
Average daylight in December /
Average sunshine in December
Ramona, 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 5min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).
Average sunshine days in December
Ramona, CA
- Average sunshine days in December: 24.4 days
The month with the most sunshine days is June (27.7 days).
The month with the least sunshine days is July (20.7 days).
Average UV index in December
Ramona, CA
- Average UV index in December: 3
The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Ramona, CA
- Average cloud cover in December: 23
The month with the most cloud cover is March (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in December
Ramona, 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).
Ramona, California, USA
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