December weather forecastOrtonville, CA
December
Weather in December
The first month of the winter, December, is also a moderate month in Ortonville, California, with temperature in the range of an average low of 45.9°F (7.7°C) and an average high of 58.8°F (14.9°C).Temperature
The coldest temperatures occur during December, when averages reach a peak of 58.8°F (14.9°C) and a low of 45.9°F (7.7°C).Humidity
In Ortonville, the average relative humidity in December is 57%.Rainfall
In Ortonville, during December, the rain falls for 6.3 days and regularly aggregates up to 1.34" (34mm) of precipitation. In Ortonville, during the entire year, the rain falls for 49.6 days and collects up to 7.68" (195mm) of precipitation.Daylight
The month with the shortest days is December, with an average of 9h and 54min of daylight.On the first day of the month, sunrise is at 6:45 am and sunset at 4:47 pm. On the last day of December, sunrise is at 7:03 am and sunset at 4:57 pm PST.
Sunshine
In Ortonville, the average sunshine in December is 6.8h.UV index
The months with the lowest UV index are November and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 3 in December interprets into the following recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Ortonville, CA
- Average high temperature in December: 58.8°F
The warmest month (with the highest average high temperature) is August (79°F).
The month with the lowest average high temperature is December (58.8°F).
- Average low temperature in December: 45.9°F
The month with the highest average low temperature is August (61.5°F).
The coldest month (with the lowest average low temperature) is February (45.5°F).
Average pressure in December
Ortonville, CA
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are June and September (29.9"Hg).
Average wind speed in December
Ortonville, CA
- Average wind speed in December: 6mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Ortonville, CA
- Average humidity in December: 57%
The month with the highest relative humidity is March (63%).
The months with the lowest relative humidity are October and November (52%).
Average rainfall in December
Ortonville, CA
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is January (1.5").
The driest month (with the least rainfall) is August (0.08").
Average rainfall days in December
Ortonville, CA
- Average rainfall days in December: 6.3 days
The month with the highest number of rainy days is March (7.7 days).
The month with the least rainy days is August (1.3 days).
Average daylight in December /
Average sunshine in December
Ortonville, CA
- Average daylight in December: 9h and 54min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 6h and 48min
The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).
Average sunshine days in December
Ortonville, CA
- Average sunshine days in December: 24.1 days
The month with the most sunshine days is October (25.7 days).
The month with the least sunshine days is February (20.8 days).
Average UV index in December
Ortonville, CA
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are November and December (UV index 3).
Average cloud cover in December
Ortonville, CA
- Average cloud cover in December: 22
The month with the most cloud cover is March (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in December
Ortonville, 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).
