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
January stands out as Astoria's coldest month, with an average high-temperature of 20.5°F (-6.4°C) and a low-temperature of 7.2°F (-13.8°C).Humidity
With an average relative humidity of 89%, January is the most humid month.Rainfall
The month with the least rainfall in Astoria is January, when the rain falls for 1.7 days and typically collects 0.43" (11mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Astoria, during January, snow falls for 11.3 days and regularly aggregates up to 2.72" (69mm) of snow. In Astoria, during the entire year, snow falls for 49.9 days and aggregates up to 14.02" (356mm) of snow.Daylight
The average length of the day in January is 9h and 17min.On the first day of January, sunrise is at 8:02 am and sunset at 4:56 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 5:33 pm CST.
Sunshine
January has the least sunshine of the year in Astoria, South Dakota, with an average of 4h of sunshine.UV index
January and November, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 1 in January interprets into the following recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Frequently asked questions
What is the coldest time of year in Astoria?
How cold is January in Astoria?
What is the most humid month in Astoria?
What is the average humidity in January in Astoria?
What is the driest month in Astoria?
How much does it rain in Astoria in January?
How much does it snow in Astoria in January?
How many hours of daylight does Astoria have in January?
What time are sunrise and sunset in January in Astoria?
What is the month with the least sunshine in Astoria?
How many hours of sunshine does Astoria have in January?
What is the month with the lowest UV index in Astoria?
How high is the UV index in January in Astoria?
Average temperature in January
Astoria, SD
- Average high temperature in January: 20.5°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (20.5°F).
- Average low temperature in January: 7.2°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (7.2°F).
Average pressure in January
Astoria, SD
- Average pressure in January: 30.16"Hg
The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in January
Astoria, SD
- Average wind speed in January: 10.4mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in January
Astoria, SD
- Average humidity in January: 89%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (67%).
Average rainfall in January
Astoria, SD
- Average rainfall in January: 0.43"
The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in January
Astoria, SD
- Average rainfall days in January: 1.7 days
The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is January (1.7 days).
Average snowfall in January
Astoria, SD
- Average snowfall in January: 2.72"
The month with the highest snowfall is February (3.27").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Astoria, SD
- Average snowfall days in January: 11.3 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Astoria, SD
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January: 4h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in January
Astoria, SD
- Average sunshine days in January: 18.8 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in January
Astoria, SD
- Average UV index in January: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and November (UV index 1).
Average cloud cover in January
Astoria, SD
- Average cloud cover in January: 58
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in January
Astoria, SD
- 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).
Astoria, South Dakota, USA
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