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
Pomona's average high-temperature in January sits at a still cold 36.1°F (2.3°C), showing little difference from the previous month. Pomona experiences a consistent average temperature of 25.5°F (-3.6°C) throughout the nights in January.Humidity
The most humid month is January, with an average relative humidity of 83%.Rainfall
In January, in Pomona, the rain falls for 10.5 days. Throughout January, 0.83" (21mm) of precipitation is accumulated. In Pomona, Washington, during the entire year, the rain falls for 87.6 days and collects up to 5.94" (151mm) of precipitation.Snowfall
Months with snowfall are January through April, September, November and December. In Pomona, in January, during 4.4 snowfall days, 1.89" (48mm) of snow is typically accumulated. Throughout the year, there are 19.9 snowfall days, and 8.62" (219mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 4min.On the first day of January, sunrise is at 7:46 am and sunset at 4:24 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:03 pm PST.
Sunshine
With an average of 5.5h of sunshine, January has the least sunshine of the year in Pomona.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for average individuals.Note: A maximum UV index of 2 in January translates into the following recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Boost your sun resistance with garments that are densely woven yet spacious. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
How cold is January in Pomona?
What is the most humid month in Pomona?
What is the average humidity in January in Pomona?
How much does it rain in Pomona in January?
How many days does it snow in January in Pomona?
How many hours of daylight does Pomona have in January?
When are sunrise and sunset in January in Pomona?
What is the month with the least sunshine in Pomona?
How many hours of sunshine does Pomona have in January?
What are the months with the lowest UV index in Pomona?
What is the UV index reading in January in Pomona?
Average temperature in January
Pomona, WA
- Average high temperature in January: 36.1°F
The warmest month (with the highest average high temperature) is August (85.1°F).
The month with the lowest average high temperature is December (36°F).
- Average low temperature in January: 25.5°F
The month with the highest average low temperature is August (58.8°F).
The coldest month (with the lowest average low temperature) is December (23.9°F).
Average pressure in January
Pomona, WA
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).
Average wind speed in January
Pomona, WA
- Average wind speed in January: 4.3mph
The windiest month (with the highest average wind speed) is June (7.4mph).
The calmest month (with the lowest average wind speed) is December (4.2mph).
Average humidity in January
Pomona, WA
- Average humidity in January: 83%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are July and August (41%).
Average rainfall in January
Pomona, WA
- Average rainfall in January: 0.83"
The wettest month (with the highest rainfall) is December (0.87").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in January
Pomona, WA
- Average rainfall days in January: 10.5 days
The month with the highest number of rainy days is March (10.8 days).
The month with the least rainy days is July (2.3 days).
Average snowfall in January
Pomona, WA
- Average snowfall in January: 1.89"
The month with the highest snowfall is December (3.07").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in January
Pomona, WA
- Average snowfall days in January: 4.4 days
The month with the highest number of snowfall days is December (5.7 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in January /
Average sunshine in January
Pomona, WA
- Average daylight in January: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in January: 5h and 3min
The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).
Average sunshine days in January
Pomona, WA
- Average sunshine days in January: 16.7 days
The month with the most sunshine days is July (27.6 days).
The month with the least sunshine days is February (15.5 days).
Average UV index in January
Pomona, WA
- 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
Pomona, WA
- Average cloud cover in January: 40
The month with the most cloud cover is January (Cloud cover 40).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility in January
Pomona, WA
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Pomona, Washington, USA
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