Sioux Falls
South Dakota, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Sioux Falls, SD

The Sioux Falls in South Dakota, flowing downstream over rocks under the perfect evening skyline
The Sioux Falls in South Dakota, flowing downstream over rocks under the perfect evening skyline
January, the same as December, in Sioux Falls, South Dakota, is another subzero cold winter month, with temperature in the range of an average low of 7°F (-13.9°C) and an average high of 26.4°F (-3.1°C). With an average high-temperature of 26.4°F (-3.1°C) and an average low-temperature of 7°F (-13.9°C), January is the coldest month. Weather in January »
February, the last month of the winter, in Sioux Falls, is also a subzero cold month, with temperature in the range of an average high of 31.3°F (-0.4°C) and an average low of 11.7°F (-11.3°C). In February, the average high-temperature is relatively the same as in January - a still freezing cold 31.3°F (-0.4°C). Weather in February »

The first month of the spring, March, is a chilly month in Sioux Falls, South Dakota, with average temperature ranging between max 43.2°F (6.2°C) and min 22.6°F (-5.2°C). In Sioux Falls, the average high-temperature rises, from a freezing cold 31.3°F (-0.4°C) in February, to a frosty 43.2°F (6.2°C). Weather in March »

April is a mild spring month in Sioux Falls, South Dakota, with average temperature ranging between max 58.5°F (14.7°C) and min 34.3°F (1.3°C). In Sioux Falls, the average high-temperature in April soars, from a frosty 43.2°F (6.2°C) in March, to a moderate 58.5°F (14.7°C). Weather in April »

May, the last month of the spring, in Sioux Falls, is an agreeable month, with temperature in the range of an average low of 46.2°F (7.9°C) and an average high of 69.8°F (21°C). In Sioux Falls, the average high-temperature rises, from a mild 58.5°F (14.7°C) in April, to a pleasant 69.8°F (21°C). Weather in May »

June, the first month of the summer, in Sioux Falls, is a warm month, with temperature in the range of an average low of 56.5°F (13.6°C) and an average high of 79.2°F (26.2°C). In June, the average high-temperature rises, from an agreeable 69.8°F (21°C) in May, to a moderately hot 79.2°F (26.2°C). Weather in June »

July, like June, in Sioux Falls, South Dakota, is another warm summer month, with temperature in the range of an average low of 61.9°F (16.6°C) and an average high of 84°F (28.9°C). July is the warmest month, with an average high-temperature of 84°F (28.9°C) and an average low-temperature of 61.9°F (16.6°C). Weather in July »

The last month of the summer, August, is also a moderately hot month in Sioux Falls, South Dakota, with average temperature fluctuating between 81.7°F (27.6°C) and 59.5°F (15.3°C). In Sioux Falls, South Dakota, the average high-temperature is essentially the same as in July - a still warm 81.7°F (27.6°C). Weather in August »

The first month of the autumn, September, is still a pleasant month in Sioux Falls, South Dakota, with average temperature varying between 49.3°F (9.6°C) and 73.2°F (22.9°C). In September, the average high-temperature slightly decreases, from a moderately hot 81.7°F (27.6°C) in August, to an agreeable 73.2°F (22.9°C). Weather in September »

October, the same as September, in Sioux Falls, South Dakota, is a moderate autumn month, with average temperature ranging between min 36.1°F (2.3°C) and max 59.5°F (15.3°C). In Sioux Falls, the average high-temperature drops, from an agreeable 73.2°F (22.9°C) in September, to a moderate 59.5°F (15.3°C). Weather in October »

The last month of the autumn, November, is also a wintry month in Sioux Falls, South Dakota, with temperature in the range of an average low of 22.6°F (-5.2°C) and an average high of 42.4°F (5.8°C). In November, the average high-temperature declines considerably, from a mild 59.5°F (15.3°C) in October, to a wintry 42.4°F (5.8°C). Weather in November »

The first month of the winter, December, is still a freezing cold month in Sioux Falls, South Dakota, with average temperature varying between 9.9°F (-12.3°C) and 28.6°F (-1.9°C). In December, the average high-temperature drops, from a wintry 42.4°F (5.8°C) in November, to a subzero cold 28.6°F (-1.9°C). Weather in December »

What is the coldest month in Sioux Falls?

January is the coldest month in Sioux Falls, with an average high-temperature of 26.4°F (-3.1°C) and an average low-temperature of 7°F (-13.9°C).

How much does it rain in Sioux Falls?

Throughout the year, in Sioux Falls, there are 105.3 rainfall days, and 26.3" (668.8mm) of precipitation is accumulated.

What is the driest month in Sioux Falls?

January is the month with the least rainfall. Rain falls for 6.6 days and accumulates 0.6" (14.2mm) of precipitation.

When does it snow in Sioux Falls?

January through April, October through December are months with snowfall in Sioux Falls.

How many days does it snow in Sioux Falls?

In Sioux Falls, during the entire year, snow falls for 33 days, and aggregates up to 44.6" (1132.9mm) of snow.

What is the month with the lowest UV index in Sioux Falls?

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Sioux Falls.

When does it snow the most in Sioux Falls?

The month with the most snowfall is March when snow falls for 5.3 days and typically aggregates up to 8.3" (210.8mm) of snow.

What is the wettest month in Sioux Falls?

June is the month with the most rainfall. Rain falls for 11.5 days and accumulates 3.9" (99.6mm) of precipitation.

When are the longest days in Sioux Falls?

With an average of 15.4h of daylight, June has the longest days of the year in Sioux Falls.

What is the month with the most sunshine in Sioux Falls?

Months with the most sunshine in Sioux Falls, South Dakota, are June and July, with an average of 11h of sunshine.

What is the warmest month in Sioux Falls?

The warmest month is July, with an average high-temperature of 84°F (28.9°C) and an average low-temperature of 61.9°F (16.6°C).

What is the month with the highest UV index in Sioux Falls?

With an average maximum UV index of 9, July is the month with the highest UV index.

What is the month with the shortest days in Sioux Falls?

With an average of 9h of daylight, December has the shortest days of the year in Sioux Falls, South Dakota.

What is the month with the least sunshine in Sioux Falls?

With an average of 4h of sunshine, December has the least sunshine of the year.
Average temperature - Sioux Falls, SD
Average rainfall - Sioux Falls, SD
Average rainfall days - Sioux Falls, SD

The month with the highest number of rainy days is May (11.8 days).
Months with the lowest number of rainy days are January and February (6.6 days).

Average snowfall - Sioux Falls, SD
Average snowfall days - Sioux Falls, SD

The month with the highest number of snowfall days is January (7.2 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine - Sioux Falls, SD