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 advent of January reveals an average high-temperature of a still cold 36.1°F (2.3°C), showing minimal difference from the prior month. Thornton experiences a nighttime temperature average of 26.1°F (-3.3°C) during January.Humidity
The most humid month in Thornton is January, with an average relative humidity of 85%.Rainfall
In January, in Thornton, the rain falls for 10.5 days. Throughout January, 1.73" (44mm) of precipitation is accumulated. In Thornton, Washington, during the entire year, the rain falls for 120.2 days and collects up to 14.69" (373mm) of precipitation.Snowfall
Months with snowfall in Thornton, Washington, are January through May, September through December. In Thornton, Washington, in January, snow falls for 8.7 days, with typically accumulated 5.12" (130mm) of snow. In Thornton, during the entire year, snow falls for 39.6 days and aggregates up to 22.68" (576mm) of snow.Daylight
In January, the average length of the day is 9h and 1min.On the first day of January, sunrise is at 7:35 am and sunset at 4:10 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 4:49 pm PST.
Sunshine
The months with the least sunshine in Thornton are January and December, with an average of 4.6h of sunshine.UV index
The months with the lowest UV index in Thornton are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 2 in January translates into this advice:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Frequently asked questions
How cold is it in Thornton in January?
What is the most humid month in Thornton?
What is the average humidity in January in Thornton?
How many days does it rain in January in Thornton?
How much does it snow in Thornton in January?
What is the average length of the day in January in Thornton?
What time are sunrise and sunset in January in Thornton?
What is the month with the least sunshine in Thornton?
How long on average sun shines in January in Thornton?
When is the lowest UV index in Thornton?
How high is the UV index in January in Thornton?
Average temperature in January
Thornton, WA
- Average high temperature in January: 36.1°F
The warmest month (with the highest average high temperature) is August (83.5°F).
The month with the lowest average high temperature is December (34.7°F).
- Average low temperature in January: 26.1°F
The month with the highest average low temperature is August (60.4°F).
The coldest month (with the lowest average low temperature) is December (24.6°F).
Average pressure in January
Thornton, WA
- Average pressure in January: 30.19"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in January
Thornton, WA
- Average wind speed in January: 7.3mph
The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in January
Thornton, WA
- Average humidity in January: 85%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (37%).
Average rainfall in January
Thornton, WA
- Average rainfall in January: 1.73"
The wettest month (with the highest rainfall) is December (1.93").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in January
Thornton, WA
- Average rainfall days in January: 10.5 days
The month with the highest number of rainy days is April (14.6 days).
The month with the least rainy days is July (4.5 days).
Average snowfall in January
Thornton, WA
- Average snowfall in January: 5.12"
The month with the highest snowfall is February (6.69").
The months with the least snowfall are June, July and August (0").
Average snowfall days in January
Thornton, WA
- Average snowfall days in January: 8.7 days
The months with the highest number of snowfall days are February and December (9.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Thornton, WA
- Average daylight in January: 9h and 0min
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: 4h and 4min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 4h and 36min).
Average sunshine days in January
Thornton, WA
- Average sunshine days in January: 15 days
The month with the most sunshine days is July (24.6 days).
The month with the least sunshine days is February (12.2 days).
Average UV index in January
Thornton, WA
- Average UV index in January: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Thornton, WA
- Average cloud cover in January: 53
The months with the most cloud cover are January and December (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility in January
Thornton, WA
- Average visibility in January: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Thornton, Washington, USA
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