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
Roza experiences a transition to a still cold 36.1°F (2.3°C) in average high-temperatures with the arrival of January, not greatly differing from December's 36°F (2.2°C). Roza records a mean low-temperature of 25.5°F (-3.6°C) in January.Humidity
The most humid month is January, with an average relative humidity of 83%.Rainfall
In January, the rain falls for 10.5 days. Throughout January, 0.83" (21mm) of precipitation is accumulated. In Roza, Washington, during the entire year, the rain falls for 87.6 days and collects up to 5.94" (151mm) of precipitation.Snowfall
Months with snowfall in Roza are January through April, September, November and December. In Roza, during January, snow falls for 4.4 days and regularly aggregates up to 1.89" (48mm) of snow. In Roza, during the entire year, snow falls for 19.9 days and aggregates up to 8.62" (219mm) of snow.Daylight
In Roza, the average length of the day in January is 9h and 3min.On the first day of the month, sunrise is at 7:46 am and sunset at 4:23 pm. On the last day of January, sunrise is at 7:27 am and sunset at 5:03 pm PST.
Sunshine
With an average of 5.5h of sunshine, January has the least sunshine of the year in Roza, Washington.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index, 2 during January, leads to 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. It's recommended to limit sun exposure when its radiation is at its peak during midday. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is January?
What is the most humid month?
What is the average humidity in January?
How many days does it rain in January?
How much does it snow in January?
How many hours of daylight does Roza have in January?
What time are sunrise and sunset in January in Roza?
What is the month with the least sunshine?
How many hours of sunshine does Roza have in January?
What are the months with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Roza, WA
- Average high temperature in January: 36.1°F
The warmest month (with the highest average high temperature) is August (85.1°F).
The month with the lowest average high temperature is December (36°F).
- Average low temperature in January: 25.5°F
The month with the highest average low temperature is August (58.8°F).
The coldest month (with the lowest average low temperature) is December (23.9°F).
Average pressure in January
Roza, WA
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).
Average wind speed in January
Roza, WA
- Average wind speed in January: 4.3mph
The windiest month (with the highest average wind speed) is June (7.4mph).
The calmest month (with the lowest average wind speed) is December (4.2mph).
Average humidity in January
Roza, WA
- Average humidity in January: 83%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are July and August (41%).
Average rainfall in January
Roza, WA
- Average rainfall in January: 0.83"
The wettest month (with the highest rainfall) is December (0.87").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in January
Roza, WA
- Average rainfall days in January: 10.5 days
The month with the highest number of rainy days is March (10.8 days).
The month with the least rainy days is July (2.3 days).
Average snowfall in January
Roza, WA
- Average snowfall in January: 1.89"
The month with the highest snowfall is December (3.07").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in January
Roza, WA
- Average snowfall days in January: 4.4 days
The month with the highest number of snowfall days is December (5.7 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in January /
Average sunshine in January
Roza, WA
- Average daylight in January: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in January: 5h and 3min
The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).
Average sunshine days in January
Roza, WA
- Average sunshine days in January: 16.7 days
The month with the most sunshine days is July (27.6 days).
The month with the least sunshine days is February (15.5 days).
Average UV index in January
Roza, WA
- Average UV index in January: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Roza, WA
- Average cloud cover in January: 40
The month with the most cloud cover is January (Cloud cover 40).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility in January
Roza, WA
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Roza, Washington, USA
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