December weather forecastBay City, OR
December
Weather in December
December, the first month of the winter in Bay City, is still a chilly month, with an average temperature ranging between max 46.2°F (7.9°C) and min 40.1°F (4.5°C).Temperature
Bay City's coldest month, December, registers temperatures that range from a high of 46.2°F (7.9°C) to a low of 40.1°F (4.5°C).Humidity
The average relative humidity in December is 81%.Rainfall
December is the month with the most rainfall. Rain falls for 14.9 days and accumulates 2.13" (54mm) of precipitation.Snowfall
March through December are months without snowfall.Ocean temperature
In Bay City, Oregon, in December, the average water temperature is 50°F (10°C).Note: With an efficient thermal swimsuit, one can navigate 50°F (10°C) even if it's colder than 50°F (10°C); otherwise, rapid cold shock and breathlessness might set in. Barely wading at 55.4°F (13°C) feels chilly.
Daylight
December has the shortest days of the year, with an average of 8h and 48min of daylight.On the first day of December, sunrise is at 7:36 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:55 am and sunset at 4:42 pm PST.
Sunshine
The average sunshine in December is 4.3h.UV index
The months with the lowest UV index are February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 2 during December translates into these guidelines:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Enhance your sun protection with tightly woven, yet airy clothing. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Bay City, OR
- Average high temperature in December: 46.2°F
The warmest month (with the highest average high temperature) is August (66.2°F).
The month with the lowest average high temperature is December (46.2°F).
- Average low temperature in December: 40.1°F
The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (40.1°F).
Average pressure in December
Bay City, OR
- Average pressure in December: 30.07"Hg
The months with the highest atmospheric pressure are January and April (30.08"Hg).
The month with the lowest atmospheric pressure is September (30.02"Hg).
Average wind speed in December
Bay City, OR
- Average wind speed in December: 10.2mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in December
Bay City, OR
- Average humidity in December: 81%
The month with the highest relative humidity is August (83%).
The month with the lowest relative humidity is May (80%).
Average rainfall in December
Bay City, OR
- Average rainfall in December: 2.13"
The wettest month (with the highest rainfall) is December (2.13").
The driest month (with the least rainfall) is August (0.2").
Average rainfall days in December
Bay City, OR
- Average rainfall days in December: 14.9 days
The month with the highest number of rainy days is March (16.1 days).
The month with the least rainy days is August (4.4 days).
Average snowfall in December
Bay City, OR
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.12").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Bay City, OR
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is February (1.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in December
Bay City, OR
- Average sea temperature in December: 49.9°F
The best month for swimming (with the highest average sea temperature) is July (57.2°F).
The coldest month (with the lowest average sea temperature) is February (48.1°F).
Average daylight in December /
Average sunshine in December
Bay City, OR
- Average daylight in December: 8h and 48min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 4h and 18min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 0min).
Average sunshine days in December
Bay City, OR
- Average sunshine days in December: 13.2 days
The month with the most sunshine days is August (25.3 days).
The month with the least sunshine days is March (12.4 days).
Average UV index in December
Bay City, OR
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are February, November and December (UV index 2).
Average cloud cover in December
Bay City, OR
- Average cloud cover in December: 55
The months with the most cloud cover are January and March (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Bay City, OR
- 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).
