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 sees a recorded average high-temperature of a still icy 35.1°F (1.7°C), showing little divergence from the previous month's conditions. An average nighttime temperature of 23.2°F (-4.9°C) is witnessed throughout January.Humidity
January is the most humid month, with an average relative humidity of 87%.Rainfall
January is the month with the most rainfall. Rain falls for 11.5 days and accumulates 2.99" (76mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. In January, in Summerville, it is snowing for 14.1 days. Throughout January, 12.72" (323mm) of snow is accumulated. Throughout the year, there are 68.6 snowfall days, and 52.4" (1331mm) of snow is accumulated.Daylight
In Summerville, the average length of the day in January is 9h and 11min.On the first day of January, sunrise is at 7:31 am and sunset at 4:19 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:56 pm PST.
Sunshine
January has the least sunshine of the year, with an average of 4.8h of sunshine.UV index
The month with the lowest UV index is January, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 1 in January translates into these instructions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. It's recommended to limit sun exposure when its radiation is at its peak during midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in January?
What is the most humid month in Summerville?
What is the average humidity in January?
What is the wettest month?
How much does it rain in January?
How much does it snow in January?
How many hours of daylight does Summerville have in January?
When are sunrise and sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Summerville have in January?
What is the month with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Summerville, OR
- Average high temperature in January: 35.1°F
The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (33.8°F).
- Average low temperature in January: 23.2°F
The month with the highest average low temperature is August (51.4°F).
The coldest month (with the lowest average low temperature) is December (21°F).
Average pressure in January
Summerville, OR
- Average pressure in January: 30.21"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in January
Summerville, OR
- Average wind speed in January: 6.8mph
The windiest month (with the highest average wind speed) is January (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in January
Summerville, OR
- Average humidity in January: 87%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (47%).
Average rainfall in January
Summerville, OR
- Average rainfall in January: 2.99"
The wettest month (with the highest rainfall) is January (2.99").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in January
Summerville, OR
- Average rainfall days in January: 11.5 days
The month with the highest number of rainy days is March (17.8 days).
The month with the least rainy days is August (4.3 days).
Average snowfall in January
Summerville, OR
- Average snowfall in January: 12.72"
The month with the highest snowfall is February (13.62").
The months with the least snowfall are June, July and August (0").
Average snowfall days in January
Summerville, OR
- Average snowfall days in January: 14.1 days
The months with the highest number of snowfall days are February and December (14.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Summerville, OR
- Average daylight in January: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in January: 4h and 5min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in January
Summerville, OR
- Average sunshine days in January: 11.8 days
The month with the most sunshine days is August (24.3 days).
The month with the least sunshine days is March (7.6 days).
Average UV index in January
Summerville, OR
- Average UV index in January: 1
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in January
Summerville, OR
- Average cloud cover in January: 50
The month with the most cloud cover is February (Cloud cover 53).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in January
Summerville, OR
- Average visibility in January: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is February (4mi).
Summerville, Oregon, USA
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