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
The arrival of January coincides with an average high-temperature of a still cold 34.5°F (1.4°C), indicating a minimal shift from December's 33.1°F (0.6°C). During January, Rosalia experiences a consistent low-temperature average of 24.6°F (-4.1°C).Humidity
January is the most humid month in Rosalia, with an average relative humidity of 87%.Rainfall
The months with the most rainfall are January and May, with an average 0.91" (23mm) of precipitation.Snowfall
Months with snowfall in Rosalia are January through May, September, November and December. In January, in Rosalia, it is snowing for 7.4 days. Throughout January, 3.7" (94mm) of snow is accumulated. Throughout the year, in Rosalia, Washington, there are 32.5 snowfall days, and 14.09" (358mm) of snow is accumulated.Daylight
In January, the average length of the day in Rosalia is 9h and 0min.On the first day of January, sunrise is at 7:36 am and sunset at 4:09 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 4:49 pm PST.
Sunshine
In January, the average sunshine in Rosalia is 4.5h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Rosalia. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: An average maximum UV index of 2 in January leads to these recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Frequently asked questions
How cold is January in Rosalia?
What is the most humid month in Rosalia?
What is the average humidity in January in Rosalia?
What is the wettest month in Rosalia?
How much does it rain in Rosalia in January?
How many days does it snow in January in Rosalia?
What is the average length of the day in January in Rosalia?
What time are sunrise and sunset in January in Rosalia?
How long on average sun shines in January in Rosalia?
What is the month with the lowest UV index in Rosalia?
What is the UV index reading in January in Rosalia?
Average temperature in January
Rosalia, WA
- Average high temperature in January: 34.5°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is December (33.1°F).
- Average low temperature in January: 24.6°F
The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is December (23.9°F).
Average pressure in January
Rosalia, WA
- Average pressure in January: 30.19"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.9"Hg).
Average wind speed in January
Rosalia, WA
- Average wind speed in January: 7.4mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in January
Rosalia, WA
- Average humidity in January: 87%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (36%).
Average rainfall in January
Rosalia, WA
- Average rainfall in January: 0.91"
The wettest months (with the highest rainfall) are January and May (0.91").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in January
Rosalia, WA
- Average rainfall days in January: 7.6 days
The month with the highest number of rainy days is March (10.1 days).
The month with the least rainy days is July (3.5 days).
Average snowfall in January
Rosalia, WA
- Average snowfall in January: 3.7"
The month with the highest snowfall is February (3.82").
The months with the least snowfall are June, July, August and October (0").
Average snowfall days in January
Rosalia, WA
- Average snowfall days in January: 7.4 days
The month with the highest number of snowfall days is December (9.3 days).
The months with the least snowfall days are June, July, August and October (0 days).
Average daylight in January /
Average sunshine in January
Rosalia, 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 36min).
- Average sunshine in January: 4h and 3min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).
Average sunshine days in January
Rosalia, WA
- Average sunshine days in January: 17.5 days
The month with the most sunshine days is July (26.6 days).
The month with the least sunshine days is February (15.9 days).
Average UV index in January
Rosalia, WA
- Average UV index in January: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Rosalia, WA
- Average cloud cover in January: 55
The months with the most cloud cover are January and December (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility in January
Rosalia, WA
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
Rosalia, Washington, USA
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