Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
As Black Diamond transitions from December to January, the average high-temperatures adjust to a still icy 42.4°F (5.8°C), nearly the same as the previous 40.8°F (4.9°C). In the month of January, the average temperature dips to a still cold 32.7°F (0.4°C) during the night.Humidity
January and February, with an average relative humidity of 86%, are the most humid months in Black Diamond.Rainfall
In Black Diamond, Washington, in January, during 18.2 rainfall days, 5.31" (135mm) of precipitation is typically accumulated. Throughout the year, in Black Diamond, Washington, there are 182.4 rainfall days, and 36.77" (934mm) of precipitation is accumulated.Snowfall
Months with snowfall in Black Diamond are January through April, November and December. In January, it is snowing for 3.3 days. Throughout January, 2.83" (72mm) of snow is accumulated. In Black Diamond, during the entire year, snow falls for 19.7 days and aggregates up to 11.5" (292mm) of snow.Daylight
The average length of the day in January in Black Diamond is 8h and 59min.On the first day of the month, sunrise is at 7:54 am and sunset at 4:28 pm. On the last day of January, in Black Diamond, sunrise is at 7:34 am and sunset at 5:07 pm PST.
Sunshine
The months with the least sunshine are January and December, with an average of 4.1h of sunshine.UV index
In January, the average daily maximum UV index in Black Diamond is 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: In January, the average maximum UV index of 2 translates into the following recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Always opt for UVA and UVB-resistant sunglasses on radiant days. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold in Black Diamond during January?
What is the most humid month in Black Diamond?
What is the average humidity in January in Black Diamond?
How many days does it rain in January in Black Diamond?
How much does it snow in Black Diamond in January?
How many hours of daylight does Black Diamond have in January?
When is the sunrise / sunset in January in Black Diamond?
What is the month with the least sunshine in Black Diamond?
How long on average sun shines in January in Black Diamond?
What is the UV index intensity in January in Black Diamond?
Average temperature in January
Black Diamond, WA
- Average high temperature in January: 42.4°F
The warmest month (with the highest average high temperature) is August (75.4°F).
The month with the lowest average high temperature is December (40.8°F).
- Average low temperature in January: 32.7°F
The month with the highest average low temperature is August (50.2°F).
The coldest month (with the lowest average low temperature) is February (31.6°F).
Average pressure in January
Black Diamond, WA
- Average pressure in January: 30.11"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30"Hg).
Average wind speed in January
Black Diamond, WA
- Average wind speed in January: 5.2mph
The windiest month (with the highest average wind speed) is January (5.2mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).
Average humidity in January
Black Diamond, WA
- Average humidity in January: 86%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is July (70%).
Average rainfall in January
Black Diamond, WA
- Average rainfall in January: 5.31"
The wettest month (with the highest rainfall) is December (5.43").
The driest month (with the least rainfall) is July (0.59").
Average rainfall days in January
Black Diamond, WA
- Average rainfall days in January: 18.2 days
The month with the highest number of rainy days is March (20.5 days).
The month with the least rainy days is August (6.7 days).
Average snowfall in January
Black Diamond, WA
- Average snowfall in January: 2.83"
The month with the highest snowfall is February (4.17").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Black Diamond, WA
- Average snowfall days in January: 3.3 days
The month with the highest number of snowfall days is February (6 days).
The months with the least snowfall days are June, July, August and October (0 days).
Average daylight in January /
Average sunshine in January
Black Diamond, WA
- Average daylight in January: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in January: 4h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 4h and 6min).
Average sunshine days in January
Black Diamond, WA
- Average sunshine days in January: 10.5 days
The month with the most sunshine days is August (22 days).
The month with the least sunshine days is February (8.4 days).
Average UV index in January
Black Diamond, WA
- Average UV index in January: 2
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in January
Black Diamond, WA
- Average cloud cover in January: 57
The months with the most cloud cover are January, February, March and December (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in January
Black Diamond, WA
- Average visibility in January: 4mi
The months with the highest visibility are July and August (6mi).
The months with the lowest visibility are January, February and December (4mi).
Black Diamond, Washington, USA
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