Climate and monthly weather forecast
Dallas, SD

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Weather in January

January, like December, is another subzero cold winter month in Dallas, South Dakota, with an average temperature ranging between min 15.6°F (-9.1°C) and max 28.8°F (-1.8°C). With its high average temperature of 28.8°F (-1.8°C) and a low of 15.6°F (-9.1°C), January is regarded as the coldest month. Weather in January »

Weather in February

February, the last month of the winter in Dallas, is a cold month, with temperature in the range of an average high of 32.5°F (0.3°C) and an average low of 18.1°F (-7.7°C). February's arrival shows an average high-temperature of a cold 32.5°F (0.3°C), hardly different from the previous month. Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Dallas, South Dakota, with an average temperature varying between 46.6°F (8.1°C) and 30.6°F (-0.8°C). March signals a shift in the average high-temperature, moving from February's cold 32.5°F (0.3°C) to a chilly 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 ranging between min 39.2°F (4°C) and max 56.7°F (13.7°C). Dallas experiences a temperature shift with the start of April, with average high-temperatures moving 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

The last month of the spring, May, is a comfortable month in Dallas, South Dakota, with an average temperature ranging between min 49.6°F (9.8°C) and max 67.8°F (19.9°C). Dallas in May experiences an increase in the average high-temperature, moving from April's refreshing 56.7°F (13.7°C) to an enjoyable 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 an average temperature varying between 80.2°F (26.8°C) and 61°F (16.1°C). In Dallas, the average high-temperature in June rises, from a comfortable 67.8°F (19.9°C) in May, to a warm 80.2°F (26.8°C). Weather in June »

Weather in July

July in Dallas, South Dakota, is a hot summer month, with an average temperature fluctuating between 88°F (31.1°C) and 66.7°F (19.3°C). July is the warmest month of the year, registering average temperatures as high as 88°F (31.1°C) and as low as 66.7°F (19.3°C). The heat index value during July is computed to be a torrid 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). August notes an average high-temperature of a moderately hot 85.8°F (29.9°C), subtly differing from July's 88°F (31.1°C). 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 ranging between min 56.3°F (13.5°C) and max 76.6°F (24.8°C). The average high-temperature drops in September, from August's 85.8°F (29.9°C) 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 another refreshing autumn month, with an average temperature varying between 42.8°F (6°C) and 59.2°F (15.1°C). The shift from September to October is characterized by a clear decrease in the average high-temperature, reducing from a warm 76.6°F (24.8°C) to a refreshing 59.2°F (15.1°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly 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). November implies a gentle temperature shift, with average high-temperatures reducing from October's mild 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 still a freezing cold month, with temperature in the range of an average high of 31.1°F (-0.5°C) and an average low of 18.3°F (-7.6°C). As November transitions into December, Dallas sees a clear drop in the average high-temperature, declining from a chilly 46.6°F (8.1°C) to a freezing cold 31.1°F (-0.5°C). Weather in December »
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Frequently asked questions

What is the coldest time of year in Dallas?

With average high and low temperatures of 28.8°F (-1.8°C) and 15.6°F (-9.1°C) respectively, January is Dallas's coldest month.

What is the most humid month in Dallas?

The most humid month is January, with an average relative humidity of 82%.

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?

Throughout the year, in Dallas, there are 103.9 rainfall days, and 16.85" (428mm) of precipitation is accumulated.

When does it snow in Dallas?

January through May, October through December are months with snowfall.

How much does it snow in Dallas?

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 in Dallas?

The month with the least sunshine in Dallas, South Dakota, is January, 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 in Dallas, 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 Dallas?

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 in Dallas?

June through September are months without snowfall in Dallas.

When are the longest days in Dallas?

The month with the longest days is June, with an average of 15h and 18min of daylight.

What is the month with the highest UV index in Dallas?

June through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the warmest month in Dallas?

July is the warmest month, exhibiting average temperatures of 88°F (31.1°C) at the peak and 66.7°F (19.3°C) at the base.

What month has the most sunshine in Dallas?

The month with the most sunshine is July, with an average of 11.4h of sunshine.

What is the least humid month in Dallas?

The months with the lowest humidity in Dallas, South Dakota, are August and September, with an average relative humidity of 57%.

What is the snowiest month in Dallas?

December is the month with the most snowfall in Dallas, South Dakota. Snow falls for 8 days and accumulates 3.19" (81mm) of snow.

What is the month with the shortest days in Dallas?

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 in Dallas?

December is the month with the lowest UV index in Dallas, South Dakota, with an average maximum UV index of 1.

Average temperature
Dallas, SD

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).

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Average pressure
Dallas, SD

Average pressure - Dallas, SD

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed
Dallas, SD

Average wind speed - Dallas, SD

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).

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Average humidity
Dallas, SD

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%).

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Average rainfall
Dallas, SD

Average rainfall - Dallas, SD

The wettest month (with the highest rainfall) is June (2.8").
The driest month (with the least rainfall) is January (0.47").

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Average rainfall days
Dallas, SD

Average rainfall days - Dallas, SD

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).

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Average snowfall
Dallas, SD

Average snowfall - Dallas, SD

The month with the highest snowfall is December (3.19").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Dallas, SD

Average snowfall days - Dallas, SD

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).

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Average daylight / Average sunshine
Dallas, SD

Average daylight / Average sunshine - Dallas, SD

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).

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).

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Average sunshine days
Dallas, SD

Average sunshine days - Dallas, SD

The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is June (11.2 days).

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Average visibility
Dallas, SD

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).

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Dallas, South Dakota, USA

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