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 shift into January reveals an average high-temperature of a still chilly 47.1°F (8.4°C), closely mirroring December's climate. The average low-temperature, in January, is a freezing cold 31.3°F (-0.4°C).Humidity
The average relative humidity in January is 80%.Rainfall
In Lewiston, in January, during 14.3 rainfall days, 5.94" (151mm) of precipitation is typically accumulated. In Lewiston, during the entire year, the rain falls for 119.2 days and collects up to 33.35" (847mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Lewiston, during January, snow falls for 3.7 days and regularly aggregates up to 5.12" (130mm) of snow. In Lewiston, during the entire year, snow falls for 21.6 days and aggregates up to 28.46" (723mm) of snow.Daylight
In Lewiston, the average length of the day in January is 9h and 40min.On the first day of January, sunrise is at 7:35 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 5:27 pm PST.
Sunshine
The average sunshine in January is 4.8h.UV index
The months with the lowest UV index in Lewiston 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 hazard from unsafe exposure to UV radiation for the ordinary person.Note: In January, the maximum UV index of 2 suggests these recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Consider carefully! The reflective quality of 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 usual temperature for Lewiston in January?
What is the average humidity in January?
How many days does it rain in January?
How much 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?
When is the lowest UV index?
How high is the UV index in January?
Average temperature in January
Lewiston, CA
- Average high temperature in January: 47.1°F
The warmest months (with the highest average high temperature) are July and August (84.6°F).
The month with the lowest average high temperature is December (45°F).
- Average low temperature in January: 31.3°F
The month with the highest average low temperature is July (51.3°F).
The coldest month (with the lowest average low temperature) is December (30°F).
Average pressure in January
Lewiston, CA
- Average pressure in January: 30.15"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is August (29.94"Hg).
Average wind speed in January
Lewiston, CA
- Average wind speed in January: 4.3mph
The windiest months (with the highest average wind speed) are March and April (4.8mph).
The calmest month (with the lowest average wind speed) is August (3.4mph).
Average humidity in January
Lewiston, CA
- Average humidity in January: 80%
The month with the highest relative humidity is March (82%).
The month with the lowest relative humidity is August (54%).
Average rainfall in January
Lewiston, CA
- Average rainfall in January: 5.94"
The wettest month (with the highest rainfall) is December (6.14").
The driest months (with the least rainfall) are July and August (0.16").
Average rainfall days in January
Lewiston, CA
- Average rainfall days in January: 14.3 days
The month with the highest number of rainy days is March (18.3 days).
The month with the least rainy days is August (2.5 days).
Average snowfall in January
Lewiston, CA
- Average snowfall in January: 5.12"
The month with the highest snowfall is February (8.35").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Lewiston, CA
- Average snowfall days in January: 3.7 days
The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Lewiston, CA
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January: 4h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).
Average sunshine days in January
Lewiston, CA
- Average sunshine days in January: 13.5 days
The month with the most sunshine days is August (26.8 days).
The month with the least sunshine days is March (10.6 days).
Average UV index in January
Lewiston, CA
- 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
Lewiston, CA
- Average cloud cover in January: 50
The month with the most cloud cover is March (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 8).
Average visibility in January
Lewiston, CA
- Average visibility in January: 5mi
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are March and December (4mi).
Lewiston, California, USA
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