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
January's advent denotes a minor fluctuation in the average high-temperature to a frosty 44.2°F (6.8°C) from December's 42.3°F (5.7°C). Rainier, during January nights, observes an average temperature of 33.4°F (0.8°C).Humidity
The months with the highest humidity in Rainier are January, February, November and December, with an average relative humidity of 88%.Rainfall
The month with the most rainfall in Rainier is January, when the rain falls for 18.7 days and typically aggregates up to 3.9" (99mm) of precipitation.Snowfall
Months with snowfall in Rainier are January through March, November and December. January is the month with the most snowfall in Rainier. Snow falls for 1.7 days and accumulates 1.26" (32mm) of snow.Daylight
The average length of the day in January is 9h and 8min.On the first day of the month, sunrise is at 7:53 am and sunset at 4:36 pm. On the last day of January, in Rainier, sunrise is at 7:35 am and sunset at 5:14 pm PST.
Sunshine
January, February and December, with an average of 3.5h of sunshine, are months with the least sunshine in Rainier.UV index
In January, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 2 in January interprets into the following recommendations:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Frequently asked questions
Is it cold in Rainier during January?
What is the most humid month in Rainier?
What is the average humidity in January in Rainier?
What is the rainiest month in Rainier?
How many days does it rain in January in Rainier?
What is the snowiest month in Rainier?
How much does it snow in Rainier in January?
How many hours of daylight does Rainier have in January?
What time are sunrise and sunset in January in Rainier?
What are the months with the least sunshine in Rainier?
How long on average sun shines in January in Rainier?
What is the UV index reading in January in Rainier?
Average temperature in January
Rainier, OR
- Average high temperature in January: 44.2°F
The warmest month (with the highest average high temperature) is August (77.9°F).
The month with the lowest average high temperature is December (42.3°F).
- Average low temperature in January: 33.4°F
The month with the highest average low temperature is August (49.8°F).
The coldest month (with the lowest average low temperature) is December (32.7°F).
Average pressure in January
Rainier, OR
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in January
Rainier, OR
- Average wind speed in January: 4.8mph
The windiest month (with the highest average wind speed) is January (4.8mph).
The calmest month (with the lowest average wind speed) is September (3.9mph).
Average humidity in January
Rainier, OR
- Average humidity in January: 88%
The months with the highest relative humidity are January, February, November and December (88%).
The month with the lowest relative humidity is July (72%).
Average rainfall in January
Rainier, OR
- Average rainfall in January: 3.9"
The wettest month (with the highest rainfall) is January (3.9").
The driest month (with the least rainfall) is August (0.39").
Average rainfall days in January
Rainier, OR
- Average rainfall days in January: 18.7 days
The month with the highest number of rainy days is March (20.3 days).
The month with the least rainy days is July (6.1 days).
Average snowfall in January
Rainier, OR
- Average snowfall in January: 1.26"
The month with the highest snowfall is January (1.26").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Rainier, OR
- Average snowfall days in January: 1.7 days
The month with the highest number of snowfall days is February (2.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Rainier, OR
- Average daylight in January: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in January: 3h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 30min).
Average sunshine days in January
Rainier, OR
- Average sunshine days in January: 10.6 days
The month with the most sunshine days is July (22 days).
The month with the least sunshine days is March (8.9 days).
Average UV index in January
Rainier, OR
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in January
Rainier, OR
- Average cloud cover in January: 64
The months with the most cloud cover are February and March (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in January
Rainier, OR
- Average visibility in January: 4mi
The month with the highest visibility is August (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, September, October, November and December (4mi).
Rainier, Oregon, USA
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