December weather forecastMorgan Hill, CA
December
Weather in December
December, the first month of the winter in Morgan Hill, is also a moderate month, with an average temperature varying between 55.9°F (13.3°C) and 40.6°F (4.8°C).Temperature
The lowest temperatures are recorded in December, with averages reaching a high of 55.9°F (13.3°C) and a low of 40.6°F (4.8°C).Humidity
In Morgan Hill, the average relative humidity in December is 72%.Rainfall
In Morgan Hill, during December, the rain falls for 9.1 days and regularly aggregates up to 1.89" (48mm) of precipitation. In Morgan Hill, during the entire year, the rain falls for 68.2 days and collects up to 10.79" (274mm) of precipitation.Daylight
December has the shortest days of the year, with an average of 9h and 42min of daylight.On the first day of December, sunrise is at 7:02 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:59 pm PST.
Sunshine
The month with the least sunshine is December, with an average of 6h of sunshine.UV index
The months with the lowest UV index 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 health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In December, a regular UV index of 3 translates into these guidelines:
Put precautions into practice - Ensuring skin and eye safety is a necessity. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Morgan Hill, CA
- Average high temperature in December: 55.9°F
The warmest months (with the highest average high temperature) are July and August (85.5°F).
The month with the lowest average high temperature is December (55.9°F).
- Average low temperature in December: 40.6°F
The month with the highest average low temperature is August (55°F).
The coldest months (with the lowest average low temperature) are February and December (40.6°F).
Average pressure in December
Morgan Hill, CA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in December
Morgan Hill, CA
- Average wind speed in December: 4.3mph
The windiest month (with the highest average wind speed) is May (5.4mph).
The calmest months (with the lowest average wind speed) are January and November (4mph).
Average humidity in December
Morgan Hill, CA
- Average humidity in December: 72%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (56%).
Average rainfall in December
Morgan Hill, CA
- Average rainfall in December: 1.89"
The wettest month (with the highest rainfall) is January (1.97").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Morgan Hill, CA
- Average rainfall days in December: 9.1 days
The month with the highest number of rainy days is March (12.4 days).
The month with the least rainy days is August (0.8 days).
Average daylight in December /
Average sunshine in December
Morgan Hill, CA
- Average daylight in December: 9h and 42min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 6h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in December
Morgan Hill, CA
- Average sunshine days in December: 20.7 days
The month with the most sunshine days is August (29.1 days).
The month with the least sunshine days is March (17.3 days).
Average UV index in December
Morgan Hill, 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 January, February, November and December (UV index 3).
Average cloud cover in December
Morgan Hill, CA
- Average cloud cover in December: 33
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 5).
Average visibility in December
Morgan Hill, 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).
