December weather forecastRumsey, CA
December
Weather in December
The first month of the winter, December, is still a cool month in Rumsey, California, with an average temperature ranging between min 41.7°F (5.4°C) and max 54.3°F (12.4°C).Temperature
With an average high-temperature of 54.3°F (12.4°C) and an average low-temperature of 41.7°F (5.4°C), December is the coldest month.Humidity
In Rumsey, the average relative humidity in December is 68%.Rainfall
In Rumsey, California, during December, the rain falls for 10.7 days and regularly aggregates up to 2.24" (57mm) of precipitation. Throughout the year, in Rumsey, there are 70.9 rainfall days, and 12.13" (308mm) of precipitation is accumulated.Snowfall
In Rumsey, snow does not fall in January, March through December.Daylight
The month with the shortest days in Rumsey is December, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:09 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:57 pm PST.
Sunshine
The month with the least sunshine is December, with an average of 5.7h 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 of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: A maximum daily UV index of 3 during December morphs into the following directions:
Heed the precautions - Suggestions to avoid sunburn are made. When the Sun is at its strongest around midday, find shade and limit exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Rumsey, CA
- Average high temperature in December: 54.3°F
The warmest month (with the highest average high temperature) is July (97.2°F).
The month with the lowest average high temperature is December (54.3°F).
- Average low temperature in December: 41.7°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is December (41.7°F).
Average pressure in December
Rumsey, CA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Rumsey, CA
- Average wind speed in December: 6mph
The windiest months (with the highest average wind speed) are February and March (6.5mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Rumsey, CA
- Average humidity in December: 68%
The month with the highest relative humidity is March (72%).
The month with the lowest relative humidity is September (38%).
Average rainfall in December
Rumsey, CA
- Average rainfall in December: 2.24"
The wettest month (with the highest rainfall) is February (2.44").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Rumsey, CA
- Average rainfall days in December: 10.7 days
The month with the highest number of rainy days is March (12.4 days).
The month with the least rainy days is July (0.8 days).
Average snowfall days in December
Rumsey, CA
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is February (0.1 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
Rumsey, CA
- Average daylight in December: 9h and 30min
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 42min
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 42min).
Average sunshine days in December
Rumsey, CA
- Average sunshine days in December: 19.6 days
The months with the most sunshine days are July and August (29.6 days).
The month with the least sunshine days is March (17.2 days).
Average UV index in December
Rumsey, 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
Rumsey, CA
- Average cloud cover in December: 36
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in December
Rumsey, 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).
