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
Rio Oso's December weather reaches an average high of 54.3°F (12.4°C) and an average low of 40.6°F (4.8°C), making it the coldest month.Humidity
In December, the average relative humidity in Rio Oso is 71%.Rainfall
In Rio Oso, during December, the rain falls for 10.7 days and regularly aggregates up to 3.43" (87mm) of precipitation. In Rio Oso, during the entire year, the rain falls for 78.2 days and collects up to 20.43" (519mm) of precipitation.Snowfall
The only month with snowfall is December. December has the most snowfall days of the year. Snow falls for 0.1 days.Daylight
The month with the shortest days in Rio Oso is December, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:06 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:54 pm PST.
Sunshine
With an average of 5.5h of sunshine, December has the least sunshine of the year in Rio Oso.UV index
The months with the lowest UV index in Rio Oso are January, February, November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 3 translates into these guidelines:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Frequently asked questions
What is the coldest month in Rio Oso?
What are the temperatures in Rio Oso in December?
What is the average humidity in December in Rio Oso?
How many days does it rain in December in Rio Oso?
When does it snow the most in Rio Oso?
When does it start snowing in Rio Oso?
What is the month with the shortest days in Rio Oso?
How many hours of daylight does Rio Oso have in December?
When is the sunrise / sunset in December in Rio Oso?
What is the month with the least sunshine in Rio Oso?
How many hours of sunshine does Rio Oso have in December?
When is the lowest UV index in Rio Oso?
How high is the UV index in December in Rio Oso?
Average temperature in December
Rio Oso, CA
- Average high temperature in December: 54.3°F
The warmest month (with the highest average high temperature) is July (95.4°F).
The month with the lowest average high temperature is December (54.3°F).
- Average low temperature in December: 40.6°F
The month with the highest average low temperature is July (61.3°F).
The coldest months (with the lowest average low temperature) are January and December (40.6°F).
Average pressure in December
Rio Oso, CA
- Average pressure in December: 30.13"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
Rio Oso, CA
- Average wind speed in December: 5.3mph
The windiest months (with the highest average wind speed) are March and May (6.2mph).
The calmest month (with the lowest average wind speed) is November (4.8mph).
Average humidity in December
Rio Oso, CA
- Average humidity in December: 71%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (39%).
Average rainfall in December
Rio Oso, CA
- Average rainfall in December: 3.43"
The wettest month (with the highest rainfall) is March (3.9").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Rio Oso, CA
- Average rainfall days in December: 10.7 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 days).
Average snowfall days in December
Rio Oso, 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
Rio Oso, CA
- Average daylight in December: 9h and 3min
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 30min).
- Average sunshine in December: 5h and 3min
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 30min).
Average sunshine days in December
Rio Oso, CA
- Average sunshine days in December: 19.3 days
The month with the most sunshine days is July (30 days).
The month with the least sunshine days is March (16.1 days).
Average UV index in December
Rio Oso, 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
Rio Oso, CA
- Average cloud cover in December: 38
The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in December
Rio Oso, 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).
Rio Oso, California, USA
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