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 commencement is accompanied by an average high-temperature of a still icy 36°F (2.2°C), diverging marginally from December's 34.3°F (1.3°C). Arock temperatures generally rest at a low of 23.4°F (-4.8°C) during the January nights.Humidity
The months with the highest humidity in Arock are January and December, with an average relative humidity of 77%.Rainfall
In Arock, Oregon, in January, during 8.9 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. In Arock, during the entire year, the rain falls for 101.4 days and collects up to 10.08" (256mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Arock, Oregon, in January, during 10.2 snowfall days, 4.8" (122mm) of snow is typically accumulated. Throughout the year, there are 44.7 snowfall days, and 21.38" (543mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 27min.On the first day of January, sunrise is at 8:21 am and sunset at 5:26 pm. On the last day of the month, sunrise is at 8:05 am and sunset at 6:01 pm MST.
Sunshine
The average sunshine in January in Arock, Oregon, is 6.1h.UV index
The months with the lowest UV index in Arock are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.Note: In January, an average UV index of 2 transforms into the following instructions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Frequently asked questions
How cold is it in Arock in January?
What is the most humid month in Arock?
What is the average humidity in January in Arock?
How much does it rain in Arock in January?
How much does it snow in Arock in January?
How many hours of daylight does Arock have in January?
When is the sunrise / sunset in January in Arock?
How long on average sun shines in January in Arock?
When is the lowest UV index in Arock?
What is the UV index reading in January in Arock?
Average temperature in January
Arock, OR
- Average high temperature in January: 36°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is December (34.3°F).
- Average low temperature in January: 23.4°F
The month with the highest average low temperature is August (64.6°F).
The coldest month (with the lowest average low temperature) is December (22.8°F).
Average pressure in January
Arock, OR
- Average pressure in January: 30.24"Hg
The month with the highest atmospheric pressure is January (30.24"Hg).
The months with the lowest atmospheric pressure are June, July and August (29.91"Hg).
Average wind speed in January
Arock, OR
- Average wind speed in January: 6.3mph
The windiest month (with the highest average wind speed) is March (8.7mph).
The calmest months (with the lowest average wind speed) are January and August (6.3mph).
Average humidity in January
Arock, OR
- Average humidity in January: 77%
The months with the highest relative humidity are January and December (77%).
The months with the lowest relative humidity are July and August (25%).
Average rainfall in January
Arock, OR
- Average rainfall in January: 1.14"
The wettest month (with the highest rainfall) is March (1.46").
The driest months (with the least rainfall) are July and August (0.16").
Average rainfall days in January
Arock, OR
- Average rainfall days in January: 8.9 days
The month with the highest number of rainy days is March (15.6 days).
The month with the least rainy days is July (2.6 days).
Average snowfall in January
Arock, OR
- Average snowfall in January: 4.8"
The month with the highest snowfall is December (6.34").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Arock, OR
- Average snowfall days in January: 10.2 days
The month with the highest number of snowfall days is December (11.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Arock, OR
- Average daylight in January: 9h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January: 6h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in January
Arock, OR
- Average sunshine days in January: 16.4 days
The month with the most sunshine days is July (26.6 days).
The month with the least sunshine days is March (12.3 days).
Average UV index in January
Arock, OR
- 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
Arock, OR
- Average cloud cover in January: 37
The month with the most cloud cover is December (Cloud cover 38).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility in January
Arock, OR
- 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).
Arock, Oregon, USA
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