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
Cascadia's shift into January sets the average high-temperature at a still chilly 46.9°F (8.3°C), a figure that deviates only slightly from December's 44.4°F (6.9°C). Nighttime temperature in Cascadia experiences an average drop to a cold 34.3°F (1.3°C) in January.Humidity
In January, the average relative humidity is 85%.Rainfall
In Cascadia, in January, during 17.4 rainfall days, 4.92" (125mm) of precipitation is typically accumulated. In Cascadia, during the entire year, the rain falls for 167.6 days and collects up to 36.54" (928mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Cascadia, in January, during 1.5 snowfall days, 2.01" (51mm) of snow is typically accumulated. In Cascadia, during the entire year, snow falls for 7.9 days and aggregates up to 7.76" (197mm) of snow.Daylight
In January, the average length of the day is 9h and 19min.On the first day of the month, sunrise is at 7:45 am and sunset at 4:40 pm. On the last day of January, sunrise is at 7:29 am and sunset at 5:17 pm PST.
Sunshine
The average sunshine in January in Cascadia is 4.3h.UV index
The average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum daily UV index of 2 during January morphs into the following directions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average January temperature?
What is the average humidity in January?
How much does it rain in January?
How many days does it snow in January?
What is the average length of the day in January?
When is the sunrise / sunset in January?
How long on average sun shines in January?
How high is the UV index in January?
Average temperature in January
Cascadia, OR
- Average high temperature in January: 46.9°F
The warmest month (with the highest average high temperature) is August (79.5°F).
The month with the lowest average high temperature is December (44.4°F).
- Average low temperature in January: 34.3°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 (32.9°F).
Average pressure in January
Cascadia, OR
- Average pressure in January: 30.12"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in January
Cascadia, OR
- Average wind speed in January: 5.1mph
The windiest month (with the highest average wind speed) is January (5.1mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in January
Cascadia, OR
- Average humidity in January: 85%
The months with the highest relative humidity are February, March and December (86%).
The month with the lowest relative humidity is August (66%).
Average rainfall in January
Cascadia, OR
- Average rainfall in January: 4.92"
The wettest month (with the highest rainfall) is December (5.47").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in January
Cascadia, OR
- Average rainfall days in January: 17.4 days
The month with the highest number of rainy days is March (21.1 days).
The month with the least rainy days is July (4.1 days).
Average snowfall in January
Cascadia, OR
- Average snowfall in January: 2.01"
The month with the highest snowfall is February (3.7").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Cascadia, OR
- Average snowfall days in January: 1.5 days
The month with the highest number of snowfall days is February (3.4 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
Cascadia, OR
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January: 4h and 2min
The month with the most sunshine is August (Average sunshine: 11h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in January
Cascadia, OR
- Average sunshine days in January: 12.3 days
The month with the most sunshine days is July (25.7 days).
The month with the least sunshine days is February (8.4 days).
Average UV index in January
Cascadia, OR
- Average UV index in January: 2
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in January
Cascadia, OR
- Average cloud cover in January: 55
The months with the most cloud cover are February and March (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in January
Cascadia, OR
- Average visibility in January: 5mi
The month with the highest visibility is August (6mi).
The months with the lowest visibility are February and April (4mi).
Cascadia, Oregon, USA
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