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
Keizer's average high-temperature in January sits at a still frosty 47.7°F (8.7°C), showing little difference from the previous month. An average low-temperature of 35.2°F (1.8°C) is noted during the nights in January.Humidity
The months with the highest humidity are January, February and December, with an average relative humidity of 86%.Rainfall
In January, the rain falls for 17.1 days. Throughout January, 3.66" (93mm) of precipitation is accumulated. In Keizer, during the entire year, the rain falls for 162.5 days and collects up to 25.08" (637mm) of precipitation.Snowfall
Months with snowfall in Keizer are January through March, November and December. In Keizer, in January, snow falls for 0.9 days, with typically accumulated 0.43" (11mm) of snow. In Keizer, during the entire year, snow falls for 4.7 days and aggregates up to 2.48" (63mm) of snow.Daylight
In Keizer, the average length of the day in January is 9h and 14min.On the first day of January, sunrise is at 7:50 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:18 pm PST.
Sunshine
In January, the average sunshine is 4.3h.UV index
The months with the lowest UV index in Keizer are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In January, the maximum UV index of 2 transforms into these recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. The solar radiation around mid-day is intense; avoid the Sun and stay safe. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average January temperature in Keizer?
What are the most humid months?
What is the average humidity in January?
How many days does it rain in January?
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 many hours of sunshine does Keizer have in January?
What is the month with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Keizer, OR
- Average high temperature in January: 47.7°F
The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (45.5°F).
- Average low temperature in January: 35.2°F
The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is December (34.5°F).
Average pressure in January
Keizer, OR
- Average pressure in January: 30.11"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in January
Keizer, OR
- Average wind speed in January: 5.5mph
The windiest months (with the highest average wind speed) are January, March and November (5.5mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in January
Keizer, OR
- Average humidity in January: 86%
The months with the highest relative humidity are January, February and December (86%).
The month with the lowest relative humidity is August (65%).
Average rainfall in January
Keizer, OR
- Average rainfall in January: 3.66"
The wettest month (with the highest rainfall) is December (3.94").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in January
Keizer, OR
- Average rainfall days in January: 17.1 days
The month with the highest number of rainy days is March (19.6 days).
The month with the least rainy days is July (3.9 days).
Average snowfall in January
Keizer, OR
- Average snowfall in January: 0.43"
The month with the highest snowfall is February (1.18").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Keizer, OR
- Average snowfall days in January: 0.9 days
The month with the highest number of snowfall days is February (1.8 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
Keizer, 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
Keizer, OR
- Average sunshine days in January: 12.4 days
The month with the most sunshine days is July (26.3 days).
The month with the least sunshine days is March (8.8 days).
Average UV index in January
Keizer, 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
Keizer, OR
- Average cloud cover in January: 57
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in January
Keizer, OR
- Average visibility in January: 5mi
The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, May, June, October, November and December (5mi).
Keizer, Oregon, USA
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