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, with its average high-temperature of 20.7°F (-6.3°C) and an average low-temperature of 6.3°F (-14.3°C), holds the record as the coldest month.Humidity
January is the most humid month in Westport, South Dakota, with an average relative humidity of 88%.Rainfall
January is the month with the least rainfall. Rain falls for 3 days and accumulates 0.59" (15mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. January is the month with the most snowfall in Westport. Snow falls for 13 days and accumulates 3.82" (97mm) of snow.Daylight
In Westport, South Dakota, the average length of the day in January is 9h and 10min.On the first day of January in Westport, sunrise is at 8:14 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 7:56 am and sunset at 5:38 pm CST.
Sunshine
January has the least sunshine of the year in Westport, South Dakota, with an average of 3.9h of sunshine.UV index
January, February and November, with an average maximum UV index of 1, are months with the lowest UV index in Westport. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In January, the UV index of 1 transforms into the following advice:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months in Westport?
How cold is January in Westport?
What is the most humid month in Westport?
What is the average humidity in January in Westport?
What is the driest month in Westport?
How many days does it rain in January in Westport?
What is the snowiest month in Westport?
How much does it snow in Westport in January?
What is the average length of the day in January in Westport?
When is the sunrise / sunset in January in Westport?
What is the month with the least sunshine in Westport?
How long on average sun shines in January in Westport?
When is the lowest UV index in Westport?
What is the UV index intensity in January in Westport?
Average temperature in January
Westport, SD
- Average high temperature in January: 20.7°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (20.7°F).
- Average low temperature in January: 6.3°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (6.3°F).
Average pressure in January
Westport, SD
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in January
Westport, SD
- Average wind speed in January: 9.5mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).
Average humidity in January
Westport, SD
- Average humidity in January: 88%
The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are August and September (60%).
Average rainfall in January
Westport, SD
- Average rainfall in January: 0.59"
The wettest month (with the highest rainfall) is June (3.46").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in January
Westport, SD
- Average rainfall days in January: 3 days
The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is February (2 days).
Average snowfall in January
Westport, SD
- Average snowfall in January: 3.82"
The month with the highest snowfall is January (3.82").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Westport, SD
- Average snowfall days in January: 13 days
The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Westport, SD
- Average daylight in January: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in January: 3h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in January
Westport, SD
- Average sunshine days in January: 17.2 days
The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is June (12.7 days).
Average UV index in January
Westport, SD
- Average UV index in January: 1
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover in January
Westport, SD
- Average cloud cover in January: 57
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and August (Cloud cover 23).
Average visibility in January
Westport, 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).
Westport, South Dakota, USA
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