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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, like December, is another subzero cold winter month in Dallas, South Dakota, with an average temperature fluctuating between 28.8°F (-1.8°C) and 15.6°F (-9.1°C). With average high temperatures of 28.8°F (-1.8°C) and lows of 15.6°F (-9.1°C), January is the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is an icy month in Dallas, South Dakota, with an average temperature ranging between min 18.1°F (-7.7°C) and max 32.5°F (0.3°C). Entering February, the average high-temperature is recorded at a wintry 32.5°F (0.3°C), exhibiting a minimal shift from January's 28.8°F (-1.8°C). Weather in February »
Weather in March
March, the first month of the spring in Dallas, is a chilly month, with an average temperature ranging between min 30.6°F (-0.8°C) and max 46.6°F (8.1°C). March's onset brings a temperature rise, moving from a cold 32.5°F (0.3°C) in February to a frosty 46.6°F (8.1°C). Weather in March »
Weather in April
April in Dallas, South Dakota, is a moderate spring month, with an average temperature fluctuating between 56.7°F (13.7°C) and 39.2°F (4°C). A shift in the average high-temperature is noticeable in April, changing from a frosty 46.6°F (8.1°C) in March to a refreshing 56.7°F (13.7°C). Weather in April »
Weather in May
May, the last month of the spring in Dallas, is a comfortable month, with an average temperature varying between 49.6°F (9.8°C) and 67.8°F (19.9°C). With the onset of May, Dallas's average high-temperature sees a rise, moving from April's moderate 56.7°F (13.7°C) to a still refreshing 67.8°F (19.9°C). Weather in May »
Weather in June
June, the first month of the summer in Dallas, is a warm month, with temperature in the range of an average high of 80.2°F (26.8°C) and an average low of 61°F (16.1°C). Dallas's June weather brings a rise in high-temperatures, moving from an enjoyable 67.8°F (19.9°C) in May to a warm 80.2°F (26.8°C). Weather in June »
Weather in July
July is a hot summer month in Dallas, South Dakota, with an average temperature fluctuating between 66.7°F (19.3°C) and 88°F (31.1°C). July, with its average high-temperature of 88°F (31.1°C) and an average low-temperature of 66.7°F (19.3°C), holds the record as the warmest month. The heat index for July is calculated to be a very hot 95°F (35°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Dallas, South Dakota, with temperature in the range of an average low of 63.9°F (17.7°C) and an average high of 85.8°F (29.9°C). During August, the average high-temperature is a moderately hot 85.8°F (29.9°C), maintaining a close resemblance to that of the preceding month. Weather in August »
Weather in September
September, the first month of the autumn in Dallas, is also a moderately hot month, with an average temperature varying between 76.6°F (24.8°C) and 56.3°F (13.5°C). Dallas in September experiences a subtle temperature decline, with average high-temperatures reducing from a warm 85.8°F (29.9°C) in August to a still moderately hot 76.6°F (24.8°C). Weather in September »
Weather in October
October, the same as September, in Dallas, South Dakota, is a moderate autumn month, with temperature in the range of an average high of 59.2°F (15.1°C) and an average low of 42.8°F (6°C). The shift into October is characterized by a noticeable reduction in the average high-temperature, decreasing from September's warm 76.6°F (24.8°C) to a mild 59.2°F (15.1°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Dallas, South Dakota, with an average temperature ranging between max 46.6°F (8.1°C) and min 31.1°F (-0.5°C). Dallas's weather in November involves a decrease in the average high-temperature, moving down from October's moderate 59.2°F (15.1°C) to a chilly 46.6°F (8.1°C). Weather in November »
Weather in December
December, the first month of the winter in Dallas, is also a subzero cold month, with an average temperature fluctuating between 18.3°F (-7.6°C) and 31.1°F (-0.5°C). Witnessing a clear drop in December, the average high-temperature declines from November's chilly 46.6°F (8.1°C) to a subzero cold 31.1°F (-0.5°C). Weather in December »
Updated: Aug 22, 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?
Temperature readings in Dallas reach their annual highs in January, averaging 28.8°F (-1.8°C) and a minimum average of 15.6°F (-9.1°C).
What is the most humid month?
With an average relative humidity of 82%, January is the most humid month.
What is the driest month in Dallas?
The month with the least rainfall is January, when the rain falls for 2.7 days and typically collects 0.47" (12mm) of precipitation.
How much does it rain?
In Dallas, during the entire year, the rain falls for 103.9 days and collects up to 16.85" (428mm) of precipitation.
When does it snow?
Months with snowfall are January through May, October through December.
How much does it snow?
Throughout the year, there are 39.7 snowfall days, and 14.45" (367mm) of snow is accumulated.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 4.9h of sunshine.
When is Daylight Saving Time (DST) in Dallas?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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 rainiest month?
The month with the most rainfall is June, when the rain falls for 15.3 days and typically aggregates up to 2.8" (71mm) of precipitation.
When it does not snow?
June through September are months without snowfall.
When are the longest days?
June has the longest days of the year, with an average of 15h and 18min of daylight.
What are the months with the highest UV index?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What is the hottest time of year?
With average temperatures fluctuating between a high of 88°F (31.1°C) and a low of 66.7°F (19.3°C), July stands out as the warmest month.
What month has the most sunshine?
July has the most sunshine of the year, with an average of 11.4h of sunshine.
What is the least humid month?
The months with the lowest humidity are August and September, with an average relative humidity of 57%.
When does it snow the most?
The month with the most snowfall is December, when snow falls for 8 days and typically aggregates up to 3.19" (81mm) of snow.
What is the month with the shortest days?
With an average of 9h and 0min of daylight, December has the shortest days of the year in Dallas.
What is the month with the lowest UV index?
With an average maximum UV index of 1, December is the month with the lowest UV index.
Average temperature
Dallas, SD
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (28.8°F).
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).
Average pressure
Dallas, SD
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.14"Hg - Average pressure in March:
30.04"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:
29.91"Hg - Average pressure in August:
29.91"Hg - Average pressure in September:
29.95"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 January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed
Dallas, SD
- Average wind speed in January:
11.1mph - Average wind speed in February:
10.6mph - Average wind speed in March:
11.2mph - Average wind speed in April:
11.9mph - Average wind speed in May:
11mph - Average wind speed in June:
10.3mph
- Average wind speed in July:
9.9mph - Average wind speed in August:
9.8mph - Average wind speed in September:
10.7mph - Average wind speed in October:
11.6mph - Average wind speed in November:
10.9mph - Average wind speed in December:
10.9mph
The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is August (9.8mph).
Average humidity
Dallas, SD
The month with the highest relative humidity is January (82%).
The months with the lowest relative humidity are August and September (57%).
Average rainfall
Dallas, SD
- Average rainfall in January:
0.47" - Average rainfall in February:
0.51" - Average rainfall in March:
1.22" - Average rainfall in April:
1.77" - Average rainfall in May:
2.6" - Average rainfall in June:
2.8"
- Average rainfall in July:
2.09" - Average rainfall in August:
1.46" - Average rainfall in September:
1.34" - Average rainfall in October:
1.3" - Average rainfall in November:
0.51" - Average rainfall in December:
0.79"
The wettest month (with the highest rainfall) is June (2.8").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days
Dallas, SD
- Average rainfall days in January:
2.7 days - Average rainfall days in February:
2.7 days - Average rainfall days in March:
7.3 days - Average rainfall days in April:
11.8 days - Average rainfall days in May:
14.3 days - Average rainfall days in June:
15.3 days
- Average rainfall days in July:
12.9 days - Average rainfall days in August:
11.8 days - Average rainfall days in September:
9.5 days - Average rainfall days in October:
8 days - Average rainfall days in November:
4.1 days - Average rainfall days in December:
3.5 days
The month with the highest number of rainy days is June (15.3 days).
The months with the least rainy days are January and February (2.7 days).
Average snowfall
Dallas, SD
- Average snowfall in January:
2.64" - Average snowfall in February:
2.52" - Average snowfall in March:
2.28" - Average snowfall in April:
1.73" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is December (3.19").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Dallas, SD
- Average snowfall days in January:
9.6 days - Average snowfall days in February:
8 days - Average snowfall days in March:
5.6 days - Average snowfall days in April:
2.8 days - Average snowfall days in May:
0.2 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:
1.6 days - Average snowfall days in November:
3.9 days - Average snowfall days in December:
8 days
The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Dallas, 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 2min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 2min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 5min - 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:
9h and 0min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January:
4h and 5min - Average sunshine in February:
6h and 1min - Average sunshine in March:
7h and 1min - Average sunshine in April:
8h and 0min - Average sunshine in May:
9h and 2min - Average sunshine in June:
10h and 5min
- Average sunshine in July:
11h and 2min - Average sunshine in August:
11h and 0min - Average sunshine in September:
9h and 0min - Average sunshine in October:
7h and 0min - Average sunshine in November:
6h and 1min - Average sunshine in December:
5h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days
Dallas, SD
- Average sunshine days in January:
19.7 days - Average sunshine days in February:
18.3 days - Average sunshine days in March:
17.9 days - Average sunshine days in April:
13.7 days - Average sunshine days in May:
14.5 days - Average sunshine days in June:
11.2 days
- Average sunshine days in July:
14 days - Average sunshine days in August:
15.4 days - Average sunshine days in September:
17.9 days - Average sunshine days in October:
20 days - Average sunshine days in November:
20.8 days - Average sunshine days in December:
20.2 days
The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is June (11.2 days).
Average UV index
Dallas, SD
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Dallas, SD
The month with the most cloud cover is January (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 20).
Average visibility
Dallas, SD
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Dallas, South Dakota, USA
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