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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, is an icy winter month in Union Center, South Dakota, with an average temperature fluctuating between 32.4°F (0.2°C) and 18.7°F (-7.4°C). In Union Center, January's average high-temperature stands at a still wintry 32.4°F (0.2°C), closely related to the preceding month. Weather in January »
Weather in February
The last month of the winter, February, is also an icy month in Union Center, South Dakota, with temperature in the range of an average low of 18°F (-7.8°C) and an average high of 32.7°F (0.4°C). February brings an average high-temperature of a still cold 32.7°F (0.4°C), showing a slight difference from January's 32.4°F (0.2°C). Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Union Center, South Dakota, with an average temperature varying between 45°F (7.2°C) and 28.6°F (-1.9°C). Union Center's transition into March is marked by a temperature shift, moving from a cold 32.7°F (0.4°C) in February to a frosty 45°F (7.2°C). Weather in March »
Weather in April
April in Union Center, South Dakota, is a fresh spring month, with an average temperature fluctuating between 52.3°F (11.3°C) and 35.1°F (1.7°C). In Union Center, stepping into April brings a gentle temperature nudge, moving slightly up from March's chilly 45°F (7.2°C) to a cool 52.3°F (11.3°C). Weather in April »
Weather in May
May, the last month of the spring in Union Center, is an enjoyable month, with an average temperature ranging between max 63°F (17.2°C) and min 44.6°F (7°C). The shift into May is marked by a rise in the average high-temperature, moving from April's cool 52.3°F (11.3°C) to a refreshing 63°F (17.2°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Union Center, South Dakota, with an average temperature varying between 55.2°F (12.9°C) and 76.1°F (24.5°C). Observing a rise in June, the average high-temperature goes from May's refreshing 63°F (17.2°C) to a warm 76.1°F (24.5°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Union Center, South Dakota, with an average temperature varying between 84.7°F (29.3°C) and 62.4°F (16.9°C). July, on average, is the warmest month, registering a high temperature of 84.7°F (29.3°C) and a low of 62.4°F (16.9°C). Throughout July, the heat index is calculated to be a hot 86°F (30°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Union Center, South Dakota, with temperature in the range of an average high of 82.6°F (28.1°C) and an average low of 61.2°F (16.2°C). The arrival of August denotes a barely perceptible change in the average high-temperatures to a still warm 82.6°F (28.1°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 Union Center, South Dakota, with temperature in the range of an average low of 53.4°F (11.9°C) and an average high of 73.8°F (23.2°C). The advent of September brings a subtle shift in temperature, with the average high moving from 82.6°F (28.1°C) in August to a still moderately hot 73.8°F (23.2°C). Weather in September »
Weather in October
October, like September, is another refreshing autumn month in Union Center, South Dakota, with an average temperature fluctuating between 40.1°F (4.5°C) and 56.3°F (13.5°C). Union Center's October weather is marked by a distinct drop in high-temperatures, declining from a warm 73.8°F (23.2°C) in September to a mild 56.3°F (13.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Union Center, South Dakota, with temperature in the range of an average high of 44.8°F (7.1°C) and an average low of 29.5°F (-1.4°C). Union Center in November undergoes a mild reduction in the average high-temperature, shifting from October's moderate 56.3°F (13.5°C) to a chilly 44.8°F (7.1°C). Weather in November »
Weather in December
December, the first month of the winter in Union Center, is also an icy month, with an average temperature fluctuating between 32.2°F (0.1°C) and 18.9°F (-7.3°C). During the coldest month, December, temperatures average a high of 32.2°F (0.1°C) and a low of 18.9°F (-7.3°C). Weather in December »
Updated: Jul 21, 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 is the most humid month?
January is the most humid month, with an average relative humidity of 77%.
What is the driest month?
The month with the least rainfall is January, when the rain falls for 6.5 days and typically collects 0.59" (15mm) of precipitation.
How many days does it rain?
In Union Center, during the entire year, the rain falls for 126.3 days and collects up to 16.77" (426mm) of precipitation.
When does it snow?
January through May, September through December are months with snowfall.
How much does it snow?
Throughout the year, there are 62.1 snowfall days, and 36.26" (921mm) of snow is accumulated.
What are the months with the lowest UV index?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the month with the least sunshine?
February has the least sunshine of the year, with an average of 5.9h of sunshine.
When is Daylight Saving Time (DST) in Union Center?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from MDT to MST.
What is the snowiest month?
The month with the most snowfall is April, when snow falls for 6.6 days and typically aggregates up to 8.23" (209mm) of snow.
What is the rainiest month?
The month with the most rainfall is May, when the rain falls for 17.3 days and typically aggregates up to 2.52" (64mm) of precipitation.
When it does not snow in Union Center?
In Union Center, snow does not fall in June through August.
When are the longest days?
The month with the longest days is June, with an average of 15h and 30min of daylight.
When is the highest UV index?
June through August, with an average maximum UV index of 6, are months with the highest UV index.
What is the warmest month?
Union Center records the warmest temperatures in July, averaging a high of 84.7°F (29.3°C) and a low of 62.4°F (16.9°C).
What is the least humid month?
August and September, with an average relative humidity of 49%, are the least humid months in Union Center.
What month has the most sunshine?
With an average of 11.7h of sunshine, August has the most sunshine of the year.
What month is the coldest in Union Center?
In Union Center, December registers the lowest temperatures, averaging 32.2°F (0.1°C) at the peak and 18.9°F (-7.3°C) at the lowest.
What is the month with the shortest days?
With an average of 8h and 54min of daylight, December has the shortest days of the year.
Average temperature
Union Center, SD
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (32.2°F).
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is February (18°F).
Average pressure
Union Center, SD
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.91"Hg - Average pressure in June:
29.84"Hg
- Average pressure in July:
29.89"Hg - Average pressure in August:
29.9"Hg - Average pressure in September:
29.93"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.05"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed
Union Center, SD
- Average wind speed in January:
10.2mph - Average wind speed in February:
9.4mph - Average wind speed in March:
9.5mph - Average wind speed in April:
10.1mph - Average wind speed in May:
9.6mph - Average wind speed in June:
9.2mph
- Average wind speed in July:
8.3mph - Average wind speed in August:
8.3mph - Average wind speed in September:
9.1mph - Average wind speed in October:
10.4mph - Average wind speed in November:
9.7mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is October (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (8.3mph).
Average humidity
Union Center, SD
The month with the highest relative humidity is January (77%).
The months with the lowest relative humidity are August and September (49%).
Average rainfall
Union Center, SD
- Average rainfall in January:
0.59" - Average rainfall in February:
0.91" - Average rainfall in March:
1.38" - Average rainfall in April:
2.36" - Average rainfall in May:
2.52" - Average rainfall in June:
1.89"
- Average rainfall in July:
1.89" - Average rainfall in August:
1.57" - Average rainfall in September:
0.83" - Average rainfall in October:
1.38" - Average rainfall in November:
0.71" - Average rainfall in December:
0.75"
The wettest month (with the highest rainfall) is May (2.52").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days
Union Center, SD
- Average rainfall days in January:
6.5 days - Average rainfall days in February:
6.3 days - Average rainfall days in March:
10.4 days - Average rainfall days in April:
14.4 days - Average rainfall days in May:
17.3 days - Average rainfall days in June:
14.8 days
- Average rainfall days in July:
13.4 days - Average rainfall days in August:
13.3 days - Average rainfall days in September:
9 days - Average rainfall days in October:
9 days - Average rainfall days in November:
6.1 days - Average rainfall days in December:
5.8 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is December (5.8 days).
Average snowfall
Union Center, SD
- Average snowfall in January:
3.19" - Average snowfall in February:
6.18" - Average snowfall in March:
5.71" - Average snowfall in April:
8.23" - Average snowfall in May:
2.72" - Average snowfall in June:
0"
The month with the highest snowfall is April (8.23").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Union Center, SD
- Average snowfall days in January:
11.4 days - Average snowfall days in February:
12.8 days - Average snowfall days in March:
9.1 days - Average snowfall days in April:
6.6 days - Average snowfall days in May:
2.3 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:
0.1 days - Average snowfall days in October:
3.4 days - Average snowfall days in November:
6.5 days - Average snowfall days in December:
9.9 days
The month with the highest number of snowfall days is February (12.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Union Center, SD
- Average daylight in January:
9h and 2min - Average daylight in February:
10h and 3min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 3min - Average daylight in May:
14h and 5min - Average daylight in June:
15h and 3min
- Average daylight in July:
15h and 1min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
8h and 5min
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:
6h and 0min - Average sunshine in February:
5h and 5min - Average sunshine in March:
7h and 4min - Average sunshine in April:
9h and 2min - Average sunshine in May:
10h and 1min - Average sunshine in June:
11h and 2min
- Average sunshine in July:
11h and 4min - Average sunshine in August:
11h and 4min - Average sunshine in September:
10h and 2min - Average sunshine in October:
7h and 1min - Average sunshine in November:
6h and 4min - Average sunshine in December:
6h and 0min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).
Average sunshine days
Union Center, SD
- Average sunshine days in January:
17.1 days - Average sunshine days in February:
13.3 days - Average sunshine days in March:
14.2 days - Average sunshine days in April:
10.3 days - Average sunshine days in May:
9.4 days - Average sunshine days in June:
11.4 days
- Average sunshine days in July:
13.3 days - Average sunshine days in August:
12.3 days - Average sunshine days in September:
17.7 days - Average sunshine days in October:
17.3 days - Average sunshine days in November:
20 days - Average sunshine days in December:
17.8 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (9.4 days).
Average UV index
Union Center, 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, November and December (UV index 2).
Average cloud cover
Union Center, SD
The months with the most cloud cover are February and April (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility
Union Center, 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).
Union Center, South Dakota, USA
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