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
Entering January, Lake Oswego's average high-temperature reads a still frosty 46.2°F (7.9°C), indicating a close resemblance to the previous month's climate. During January, Lake Oswego experiences a consistent low-temperature average of 35.2°F (1.8°C).Humidity
In Lake Oswego, the average relative humidity in January is 83%.Rainfall
In January, the rain falls for 17.9 days. Throughout January, 4.25" (108mm) of precipitation is accumulated. Throughout the year, there are 172.2 rainfall days, and 31.3" (795mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In Lake Oswego, in January, during 1.5 snowfall days, 0.94" (24mm) of snow is typically accumulated. In Lake Oswego, during the entire year, snow falls for 6.5 days and aggregates up to 4.13" (105mm) of snow.Daylight
In January, the average length of the day is 9h and 12min.On the first day of the month, sunrise is at 7:50 am and sunset at 4:38 pm. On the last day of January, sunrise is at 7:32 am and sunset at 5:15 pm PST.
Sunshine
In January, the average sunshine in Lake Oswego is 4.3h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A typical high UV index of 2 in January suggests the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Lake Oswego in January?
What is the average humidity in January?
How many days does it rain in January in Lake Oswego?
How many days does it snow in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
How long on average sun shines in January?
What are the months with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Lake Oswego, OR
- Average high temperature in January: 46.2°F
The warmest month (with the highest average high temperature) is August (81.7°F).
The month with the lowest average high temperature is December (44.4°F).
- Average low temperature in January: 35.2°F
The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is December (34.7°F).
Average pressure in January
Lake Oswego, 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
Lake Oswego, OR
- Average wind speed in January: 6mph
The windiest month (with the highest average wind speed) is January (6mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in January
Lake Oswego, OR
- Average humidity in January: 83%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is August (63%).
Average rainfall in January
Lake Oswego, OR
- Average rainfall in January: 4.25"
The wettest month (with the highest rainfall) is December (4.57").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in January
Lake Oswego, OR
- Average rainfall days in January: 17.9 days
The month with the highest number of rainy days is March (20.4 days).
The month with the least rainy days is July (4.8 days).
Average snowfall in January
Lake Oswego, OR
- Average snowfall in January: 0.94"
The month with the highest snowfall is March (1.46").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Lake Oswego, OR
- Average snowfall days in January: 1.5 days
The month with the highest number of snowfall days is February (2.3 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
Lake Oswego, 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 2min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in January
Lake Oswego, OR
- Average sunshine days in January: 11.2 days
The month with the most sunshine days is July (23.9 days).
The month with the least sunshine days is February (8.3 days).
Average UV index in January
Lake Oswego, OR
- 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
Lake Oswego, OR
- Average cloud cover in January: 56
The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in January
Lake Oswego, OR
- Average visibility in January: 5mi
The months with the highest visibility are July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, May, June, November and December (5mi).
Lake Oswego, Oregon, USA
Weather forecast for your location
2. Allow the app to use your location