December weather forecastWashington, MI
December
Weather in December
December, the first month of the winter in Washington, is also an icy month, with an average temperature fluctuating between 25.7°F (-3.5°C) and 33.8°F (1°C).Temperature
The transition into December is accompanied by a temperature decrease, with the average high-temperature shifting from a frosty 45°F (7.2°C) in November to a wintry 33.8°F (1°C). Nighttime temperatures in Washington hover around an average low of 25.7°F (-3.5°C) in December, a slight descent from daytime highs.Humidity
In Washington, the average relative humidity in December is 83%.Rainfall
The month with the least rainfall is December, when the rain falls for 9.4 days and typically collects 1.61" (41mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 15 days. Throughout December, 3.27" (83mm) of snow is accumulated. In Washington, during the entire year, snow falls for 68.4 days and aggregates up to 20.55" (522mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:43 am and sunset at 4:59 pm. On the last day of December, sunrise is at 8:02 am and sunset at 5:08 pm EST.
Sunshine
In December, the average sunshine is 3.5h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.Note: In December, the maximum UV index of 1 transforms into these recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Washington, MI
- Average high temperature in December: 33.8°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (27.7°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).
Average pressure in December
Washington, MI
- Average pressure in December: 30.07"Hg
The months with the highest atmospheric pressure are March and November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Washington, MI
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in December
Washington, MI
- Average humidity in December: 83%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is April (76%).
Average rainfall in December
Washington, MI
- Average rainfall in December: 1.61"
The wettest month (with the highest rainfall) is April (3.03").
The driest month (with the least rainfall) is December (1.61").
Average rainfall days in December
Washington, MI
- Average rainfall days in December: 9.4 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is February (7 days).
Average snowfall in December
Washington, MI
- Average snowfall in December: 3.27"
The month with the highest snowfall is February (5.75").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Washington, MI
- Average snowfall days in December: 15 days
The month with the highest number of snowfall days is January (16.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Washington, MI
- Average daylight in December: 9h and 6min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 3h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in December
Washington, MI
- Average sunshine days in December: 11.1 days
The month with the most sunshine days is September (13.8 days).
The month with the least sunshine days is February (8.2 days).
Average UV index in December
Washington, MI
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Washington, MI
- Average cloud cover in December: 64
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in December
Washington, MI
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
