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
Roche Harbor's coldest months, January, February and December, record an average high-temperature of 45.3°F (7.4°C).Humidity
January, August and September, with an average relative humidity of 79%, are the most humid months.Rainfall
In January, the rain falls for 17.3 days. Throughout January, 3.15" (80mm) of precipitation is accumulated. In Roche Harbor, Washington, during the entire year, the rain falls for 167.7 days and collects up to 23.46" (596mm) of precipitation.Snowfall
Months with snowfall in Roche Harbor are January through March, November and December. In Roche Harbor, in January, snow falls for 1.5 days, with typically accumulated 0.83" (21mm) of snow. Throughout the year, there are 6.9 snowfall days, and 3.43" (87mm) of snow is accumulated.Daylight
The average length of the day in January in Roche Harbor is 8h and 50min.On the first day of January, sunrise is at 8:04 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 5:08 pm PST.
Sunshine
In Roche Harbor, the average sunshine in January is 4.2h.UV index
The months with the lowest UV index in Roche Harbor are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 2 in January interprets into the following recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Frequently asked questions
What is the coldest time of year in Roche Harbor?
What are the temperatures in Roche Harbor in January?
What are the most humid months in Roche Harbor?
What is the average humidity in January in Roche Harbor?
How many days does it rain in January in Roche Harbor?
How much does it snow in Roche Harbor in January?
How many hours of daylight does Roche Harbor have in January?
When is the sunrise / sunset in January in Roche Harbor?
How long on average sun shines in January in Roche Harbor?
What are the months with the lowest UV index in Roche Harbor?
What is the UV index reading in January in Roche Harbor?
Average temperature in January
Roche Harbor, WA
- Average high temperature in January: 45.3°F
The warmest month (with the highest average high temperature) is July (64.9°F).
The months with the lowest average high temperature are January, February and December (45.3°F).
- Average low temperature in January: 41°F
The month with the highest average low temperature is August (57.7°F).
The coldest month (with the lowest average low temperature) is February (40.5°F).
Average pressure in January
Roche Harbor, WA
- Average pressure in January: 30.07"Hg
The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).
Average wind speed in January
Roche Harbor, WA
- Average wind speed in January: 9.7mph
The windiest month (with the highest average wind speed) is November (10.7mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in January
Roche Harbor, WA
- Average humidity in January: 79%
The months with the highest relative humidity are January, August and September (79%).
The month with the lowest relative humidity is April (76%).
Average rainfall in January
Roche Harbor, WA
- Average rainfall in January: 3.15"
The wettest month (with the highest rainfall) is November (3.43").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in January
Roche Harbor, WA
- Average rainfall days in January: 17.3 days
The month with the highest number of rainy days is March (20.2 days).
The month with the least rainy days is August (5.3 days).
Average snowfall in January
Roche Harbor, WA
- Average snowfall in January: 0.83"
The month with the highest snowfall is February (1.77").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Roche Harbor, WA
- Average snowfall days in January: 1.5 days
The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Roche Harbor, WA
- Average daylight in January: 8h and 5min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in January: 4h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in January
Roche Harbor, WA
- Average sunshine days in January: 10.8 days
The month with the most sunshine days is August (24.7 days).
The month with the least sunshine days is November (8.7 days).
Average UV index in January
Roche Harbor, WA
- Average UV index in January: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Roche Harbor, WA
- Average cloud cover in January: 55
The months with the most cloud cover are February and December (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 23).
Average visibility in January
Roche Harbor, WA
- Average visibility in January: 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).
Roche Harbor, Washington, USA
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