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 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, on average, is the coldest month, registering a high temperature of 54.5°F (12.5°C) and a low of 40.6°F (4.8°C).Humidity
The average relative humidity in December in Richvale is 67%.Rainfall
In December, in Richvale, the rain falls for 11.1 days. Throughout December, 4.33" (110mm) of precipitation is accumulated. Throughout the year, there are 80.4 rainfall days, and 24.21" (615mm) of precipitation is accumulated.Snowfall
December is the only month when snow falls in Richvale. December has the most snowfall days of the year. Snow falls for 0.1 days.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of December in Richvale, sunrise is at 7:08 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:53 pm PST.
Sunshine
December has the least sunshine of the year in Richvale, California, with an average of 5.8h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In December, a daily UV index of 3 turns into the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Frequently asked questions
What is the coldest month in Richvale?
What is the temperature in December in Richvale?
What is the average humidity in December in Richvale?
How much does it rain in Richvale in December?
When does it snow the most in Richvale?
When does it start snowing in Richvale?
What is the month with the shortest days in Richvale?
What is the average length of the day in December in Richvale?
When are sunrise and sunset in December in Richvale?
What is the month with the least sunshine in Richvale?
How many hours of sunshine does Richvale have in December?
What are the months with the lowest UV index in Richvale?
What is the UV index intensity in December in Richvale?
Average temperature in December
Richvale, CA
- Average high temperature in December: 54.5°F
The warmest month (with the highest average high temperature) is July (95.9°F).
The month with the lowest average high temperature is December (54.5°F).
- Average low temperature in December: 40.6°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is December (40.6°F).
Average pressure in December
Richvale, CA
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Richvale, CA
- Average wind speed in December: 5.3mph
The windiest month (with the highest average wind speed) is March (6.3mph).
The calmest months (with the lowest average wind speed) are August and November (5.2mph).
Average humidity in December
Richvale, CA
- Average humidity in December: 67%
The month with the highest relative humidity is March (72%).
The month with the lowest relative humidity is July (33%).
Average rainfall in December
Richvale, CA
- Average rainfall in December: 4.33"
The wettest month (with the highest rainfall) is March (4.61").
The driest month (with the least rainfall) is July (0.04").
Average rainfall days in December
Richvale, CA
- Average rainfall days in December: 11.1 days
The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is July (1.3 days).
Average snowfall days in December
Richvale, CA
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Richvale, CA
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 5h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in December
Richvale, CA
- Average sunshine days in December: 19.2 days
The month with the most sunshine days is July (29.3 days).
The month with the least sunshine days is March (15.5 days).
Average UV index in December
Richvale, CA
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Richvale, CA
- Average cloud cover in December: 35
The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in December
Richvale, 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).
Richvale, California, USA
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