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
As December turns into January, the average high-temperatures rest at a still subzero cold 29.3°F (-1.5°C), showing a minor variation from the prior month. During the month of January, Winthrop experiences a steady low-temperature average of 14.2°F (-9.9°C).Humidity
The most humid month is January, with an average relative humidity of 93%.Rainfall
In Winthrop, in January, it is raining for 12 days, with typically 2.36" (60mm) of accumulated precipitation. In Winthrop, during the entire year, the rain falls for 142.6 days and collects up to 17.91" (455mm) of precipitation.Snowfall
January through April, September through December are months with snowfall. In Winthrop, in January, during 14.8 snowfall days, 11.81" (300mm) of snow is typically accumulated. In Winthrop, during the entire year, snow falls for 66.9 days and aggregates up to 43.98" (1117mm) of snow.Daylight
The average length of the day in January is 8h and 51min.On the first day of January, sunrise is at 7:52 am and sunset at 4:16 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 4:57 pm PST.
Sunshine
January has the least sunshine of the year, with an average of 4.1h of sunshine.UV index
The months with the lowest UV index are January, February and November, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In January, the UV index of 1 transforms into the following advice:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is January in Winthrop?
What is the most humid month?
What is the average humidity in January?
How much does it rain in Winthrop in January?
How many days does it snow in January?
How many hours of daylight does Winthrop have in January?
When is the sunrise / sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January in Winthrop?
What is the month with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Winthrop, WA
- Average high temperature in January: 29.3°F
The warmest month (with the highest average high temperature) is August (75.9°F).
The month with the lowest average high temperature is December (27.5°F).
- Average low temperature in January: 14.2°F
The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (13.5°F).
Average pressure in January
Winthrop, WA
- Average pressure in January: 30.15"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are June and August (29.95"Hg).
Average wind speed in January
Winthrop, WA
- Average wind speed in January: 3.6mph
The windiest months (with the highest average wind speed) are June and July (5mph).
The calmest months (with the lowest average wind speed) are January and December (3.6mph).
Average humidity in January
Winthrop, WA
- Average humidity in January: 93%
The month with the highest relative humidity is January (93%).
The months with the lowest relative humidity are July and August (53%).
Average rainfall in January
Winthrop, WA
- Average rainfall in January: 2.36"
The wettest month (with the highest rainfall) is December (2.48").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in January
Winthrop, WA
- Average rainfall days in January: 12 days
The month with the highest number of rainy days is March (17.3 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in January
Winthrop, WA
- Average snowfall in January: 11.81"
The month with the highest snowfall is December (12.87").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in January
Winthrop, WA
- Average snowfall days in January: 14.8 days
The month with the highest number of snowfall days is December (15.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Winthrop, WA
- Average daylight in January: 8h and 5min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in January: 4h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in January
Winthrop, WA
- Average sunshine days in January: 11.1 days
The month with the most sunshine days is August (23 days).
The month with the least sunshine days is March (8.3 days).
Average UV index in January
Winthrop, WA
- Average UV index in January: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover in January
Winthrop, WA
- Average cloud cover in January: 55
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in January
Winthrop, WA
- Average visibility in January: 3mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).
Winthrop, Washington, USA
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