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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, in Westport, South Dakota, is a freezing cold winter month, with an average temperature varying between 20.7°F (-6.3°C) and 6.3°F (-14.3°C). 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. Weather in January »
Weather in February
February, the last month of the winter in Westport, is another freezing cold month, with temperature in the range of an average low of 9.1°F (-12.7°C) and an average high of 23.7°F (-4.6°C). During February, Westport records an average high-temperature of a still subzero cold 23.7°F (-4.6°C), marking a slight divergence from January's 20.7°F (-6.3°C). Weather in February »
Weather in March
March, the first month of the spring in Westport, is an icy month, with an average temperature fluctuating between 24.8°F (-4°C) and 39.7°F (4.3°C). The changeover to March signals a significant increase in the average high-temperature, rising from a freezing cold 23.7°F (-4.6°C) in February to a wintry 39.7°F (4.3°C). Weather in March »
Weather in April
April in Westport, South Dakota, is a cool spring month, with an average temperature varying between 36.9°F (2.7°C) and 54.1°F (12.3°C). As March gives way to April, the average high-temperature displays a considerable increase, soaring from an icy 39.7°F (4.3°C) to a fresh 54.1°F (12.3°C). Weather in April »
Weather in May
May, the last month of the spring in Westport, is an enjoyable month, with an average temperature ranging between max 66.7°F (19.3°C) and min 48.2°F (9°C). As Westport welcomes May, the average high-temperature sees a rise, transitioning from a fresh 54.1°F (12.3°C) in April to an enjoyable 66.7°F (19.3°C). Weather in May »
Weather in June
June, the first month of the summer in Westport, is a moderately hot month, with an average temperature ranging between min 57.6°F (14.2°C) and max 76.8°F (24.9°C). With the onset of June, Westport's average high-temperature experiences a rise, moving from May's comfortable 66.7°F (19.3°C) to a warm 76.8°F (24.9°C). Weather in June »
Weather in July
July, like June, in Westport, South Dakota, is a moderately hot summer month, with an average temperature varying between 63.1°F (17.3°C) and 84.7°F (29.3°C). The warmest month is July, with an average high-temperature of 84.7°F (29.3°C) and an average low-temperature of 63.1°F (17.3°C). For most parts of July, the heat index is evaluated at a tropical 89.6°F (32°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Westport, South Dakota, with temperature in the range of an average low of 61°F (16.1°C) and an average high of 83.1°F (28.4°C). August's advent denotes a minor fluctuation in the average high-temperature to a still warm 83.1°F (28.4°C) from July's 84.7°F (29.3°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Westport, South Dakota, with temperature in the range of an average low of 52.9°F (11.6°C) and an average high of 74.3°F (23.5°C). The onset of September aligns with a soft reduction in the average high-temperature, gently falling from a warm 83.1°F (28.4°C) in August to a still moderately hot 74.3°F (23.5°C). Weather in September »
Weather in October
October, the same as September, in Westport, South Dakota, is another refreshing autumn month, with an average temperature varying between 56.3°F (13.5°C) and 40.1°F (4.5°C). Witnessing a clear drop in October, the average high-temperature declines from September's moderately hot 74.3°F (23.5°C) to a mild 56.3°F (13.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cold month in Westport, South Dakota, with temperature in the range of an average low of 26.8°F (-2.9°C) and an average high of 41.7°F (5.4°C). Westport witnesses a significant decrease in the average high-temperature with the arrival of November, falling from October's refreshing 56.3°F (13.5°C) to a cold 41.7°F (5.4°C). Weather in November »
Weather in December
The first month of the winter, December, is still a freezing cold month in Westport, South Dakota, with an average temperature fluctuating between 25°F (-3.9°C) and 12.7°F (-10.7°C). As Westport steps into December, a marked temperature drop is observed, with the average high-temperature reducing from November's wintry 41.7°F (5.4°C) to a freezing cold 25°F (-3.9°C). Weather in December »
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months in Westport?
January, characterized by an average high temperature of 20.7°F (-6.3°C) and a low temperature of 6.3°F (-14.3°C), is generally the coldest month in Westport.
What is the most humid month in Westport?
The most humid month in Westport is January, with an average relative humidity of 88%.
What is the driest month in Westport?
The month with the least rainfall is January, when the rain falls for 3 days and typically collects 0.59" (15mm) of precipitation.
How many days does it rain in Westport?
Throughout the year, there are 97.2 rainfall days, and 18.35" (466mm) of precipitation is accumulated.
When does it snow in Westport?
Months with snowfall in Westport, South Dakota, are January through May, October through December.
What is the snowiest month in Westport?
January is the month with the most snowfall. Snow falls for 13 days and accumulates 3.82" (97mm) of snow.
How much does it snow in Westport?
Throughout the year, there are 54.8 snowfall days, and 19.13" (486mm) of snow is accumulated.
What is the month with the least sunshine in Westport?
January has the least sunshine of the year in Westport, South Dakota, with an average of 3.9h of sunshine.
When is the lowest UV index in Westport?
January, February and November, with an average maximum UV index of 1, are months with the lowest UV index.
When is Daylight Saving Time (DST) in Westport?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Westport, South Dakota, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
What is the wettest month in Westport?
June is the month with the most rainfall. Rain falls for 15 days and accumulates 3.46" (88mm) of precipitation.
When it does not snow in Westport?
June through September are months without snowfall in Westport, South Dakota.
When are the longest days in Westport?
With an average of 15h and 36min of daylight, June has the longest days of the year.
What are the months with the highest UV index in Westport?
The months with the highest UV index in Westport, South Dakota, are June through August, with an average maximum UV index of 6.
What is the warmest month in Westport?
The highest temperatures are recorded in July, with averages reaching a high of 84.7°F (29.3°C) and a low of 63.1°F (17.3°C).
What month has the most sunshine in Westport?
July has the most sunshine of the year in Westport, South Dakota, with an average of 11.1h of sunshine.
What is the least humid month in Westport?
The months with the lowest humidity are August and September, with an average relative humidity of 60%.
What is the month with the shortest days in Westport?
December has the shortest days of the year in Westport, South Dakota, with an average of 8h and 48min of daylight.
Average temperature
Westport, SD
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).
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
Westport, SD
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.17"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.85"Hg
- Average pressure in July:
29.91"Hg - Average pressure in August:
29.91"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.13"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
Westport, SD
- Average wind speed in January:
9.5mph - Average wind speed in February:
9.4mph - Average wind speed in March:
9.7mph - Average wind speed in April:
10.6mph - Average wind speed in May:
9.7mph - Average wind speed in June:
8.9mph
- Average wind speed in July:
8.4mph - Average wind speed in August:
8.3mph - Average wind speed in September:
9.6mph - Average wind speed in October:
10.4mph - Average wind speed in November:
9.6mph - Average wind speed in December:
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
Westport, SD
The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are August and September (60%).
Average rainfall
Westport, SD
- Average rainfall in January:
0.59" - Average rainfall in February:
0.63" - Average rainfall in March:
1.1" - Average rainfall in April:
1.65" - Average rainfall in May:
2.32" - Average rainfall in June:
3.46"
- Average rainfall in July:
2.6" - Average rainfall in August:
1.61" - Average rainfall in September:
1.26" - Average rainfall in October:
1.61" - Average rainfall in November:
0.63" - Average rainfall in December:
0.87"
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
Westport, SD
- Average rainfall days in January:
3 days - Average rainfall days in February:
2 days - Average rainfall days in March:
7.1 days - Average rainfall days in April:
10.2 days - Average rainfall days in May:
13 days - Average rainfall days in June:
15 days
- Average rainfall days in July:
12.2 days - Average rainfall days in August:
10.4 days - Average rainfall days in September:
8.9 days - Average rainfall days in October:
7.8 days - Average rainfall days in November:
4.5 days - Average rainfall days in December:
3.1 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
Westport, SD
- Average snowfall in January:
3.82" - Average snowfall in February:
3.7" - Average snowfall in March:
3.19" - Average snowfall in April:
2.32" - Average snowfall in May:
0.08" - Average snowfall in June:
0"
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
Westport, SD
- Average snowfall days in January:
13 days - Average snowfall days in February:
10.9 days - Average snowfall days in March:
8.7 days - Average snowfall days in April:
3.3 days - Average snowfall days in May:
0.3 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
2.1 days - Average snowfall days in November:
5.1 days - Average snowfall days in December:
11.4 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 / Average sunshine
Westport, SD
- Average daylight in January:
9h and 1min - Average daylight in February:
10h and 2min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 4min - Average daylight in May:
14h and 5min - Average daylight in June:
15h and 4min
- Average daylight in July:
15h and 2min - Average daylight in August:
14h and 1min - Average daylight in September:
12h and 3min - Average daylight in October:
10h and 5min - Average daylight in November:
9h and 3min - Average daylight in December:
8h and 5min
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 - Average sunshine in February:
4h and 5min - Average sunshine in March:
5h and 3min - Average sunshine in April:
7h and 4min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
11h and 1min - Average sunshine in August:
10h and 4min - Average sunshine in September:
8h and 4min - Average sunshine in October:
6h and 2min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 2min
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
Westport, SD
- Average sunshine days in January:
17.2 days - Average sunshine days in February:
16.3 days - Average sunshine days in March:
16.4 days - Average sunshine days in April:
15.5 days - Average sunshine days in May:
15.7 days - Average sunshine days in June:
12.7 days
- Average sunshine days in July:
16.8 days - Average sunshine days in August:
18.2 days - Average sunshine days in September:
18.7 days - Average sunshine days in October:
19.8 days - Average sunshine days in November:
20.9 days - Average sunshine days in December:
18.9 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
Westport, SD
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
Westport, SD
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
Westport, SD
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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