Monthly weather forecast and climate
South Yankton, NE

January, like December, is another subzero cold winter month in South Yankton, Nebraska, with average temperature varying between 12.9°F (-10.6°C) and 26.8°F (-2.9°C). January is the coldest month, with an average high-temperature of 26.8°F (-2.9°C) and an average low-temperature of 12.9°F (-10.6°C). Weather in January »

February, the last month of the winter, in South Yankton, is another freezing cold month, with average temperature fluctuating between 16.3°F (-8.7°C) and 30.6°F (-0.8°C). In South Yankton, the average high-temperature is relatively the same as in January - a still freezing cold 30.6°F (-0.8°C). Weather in February »

March, the first month of the spring, in South Yankton, is a chilly month, with average temperature fluctuating between 30.2°F (-1°C) and 46.9°F (8.3°C). In South Yankton, Nebraska, the average high-temperature in March increases considerably, from a subzero cold 30.6°F (-0.8°C) in February, to a frosty 46.9°F (8.3°C). Weather in March »

April is a mild spring month in South Yankton, Nebraska, with average temperature fluctuating between 57.9°F (14.4°C) and 40.1°F (4.5°C). In April, the average high-temperature rises, from a chilly 46.9°F (8.3°C) in March, to a moderate 57.9°F (14.4°C). Weather in April »

May, the last month of the spring, in South Yankton, is an agreeable month, with temperature in the range of an average low of 50.9°F (10.5°C) and an average high of 69.1°F (20.6°C). In South Yankton, Nebraska, the average high-temperature in May increases, from a moderate 57.9°F (14.4°C) in April, to an agreeable 69.1°F (20.6°C). Weather in May »

June, the first month of the summer, in South Yankton, is a warm month, with average temperature ranging between max 79.7°F (26.5°C) and min 61.7°F (16.5°C). In June, the average high-temperature increases, from an agreeable 69.1°F (20.6°C) in May, to a moderately hot 79.7°F (26.5°C). Weather in June »

July, like June, in South Yankton, Nebraska, is a moderately hot summer month, with average temperature ranging between max 84.9°F (29.4°C) and min 64.9°F (18.3°C). July is the warmest month, with an average high-temperature of 84.9°F (29.4°C) and an average low-temperature of 64.9°F (18.3°C). In July, the average heat index is evaluated at a tropical 92.8°F (33.8°C). Weather in July »

The last month of the summer, August, is another warm month in South Yankton, Nebraska, with average temperature fluctuating between 61.3°F (16.3°C) and 83.3°F (28.5°C). In August, the average high-temperature is almost the same as in July - a still warm 83.3°F (28.5°C). Weather in August »

September, the first month of the autumn, in South Yankton, is also a moderately hot month, with average temperature ranging between max 76.1°F (24.5°C) and min 55°F (12.8°C). In South Yankton, the average high-temperature in September slightly decreases, from a moderately hot 83.3°F (28.5°C) in August, to a still warm 76.1°F (24.5°C). Weather in September »

October, the same as September, in South Yankton, Nebraska, is a moderate autumn month, with average temperature varying between 59.4°F (15.2°C) and 42.6°F (5.9°C). In October, the average high-temperature significantly decreases, from a warm 76.1°F (24.5°C) in September, to a moderate 59.4°F (15.2°C). Weather in October »

The last month of the autumn, November, is also a frosty month in South Yankton, Nebraska, with average temperature ranging between min 30.7°F (-0.7°C) and max 45.9°F (7.7°C). In South Yankton, the average high-temperature in November decreases, from a moderate 59.4°F (15.2°C) in October, to a frosty 45.9°F (7.7°C). Weather in November »

The first month of the winter, December, is still a freezing cold month in South Yankton, Nebraska, with average temperature ranging between max 29.8°F (-1.2°C) and min 18°F (-7.8°C). In December, the average high-temperature plummets, from a chilly 45.9°F (7.7°C) in November, to a freezing cold 29.8°F (-1.2°C). Weather in December »

What is the coldest month in South Yankton?

With an average high-temperature of 26.8°F (-2.9°C) and an average low-temperature of 12.9°F (-10.6°C), January is the coldest month in South Yankton, Nebraska.

What is the most humid month in South Yankton?

With an average relative humidity of 85%, January is the most humid month.

How many days does it rain in South Yankton?

Throughout the year, there are 117.9 rainfall days, and 21.93" (557mm) of precipitation is accumulated.

When does it snow in South Yankton?

Months with snowfall in South Yankton, Nebraska, are January through May, October through December.

How much does it snow in South Yankton?

In South Yankton, during the entire year, snow falls for 37.4 days, and aggregates up to 14.45" (367mm) of snow.

What is the month with the least sunshine in South Yankton?

January has the least sunshine of the year, with an average of 4.4h of sunshine.

What is the month with the lowest UV index in South Yankton?

With an average maximum UV index of 1, January is the month with the lowest UV index in South Yankton, Nebraska.

What is the driest month in South Yankton?

The month with the least rainfall in South Yankton is February when the rain falls for 2.3 days and typically collects 0.59" (15mm) of precipitation.

What is the rainiest month in South Yankton?

The month with the most rainfall in South Yankton, Nebraska, is May when the rain falls for 16.9 days and typically aggregates up to 3.78" (96mm) of precipitation.

When it does not snow in South Yankton?

June through September are months without snowfall in South Yankton, Nebraska.

When are the longest days in South Yankton?

With an average of 15.3h of daylight, June has the longest days of the year.

What are the months with the highest UV index in South Yankton?

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

What is the warmest month in South Yankton?

The warmest month is July, with an average high-temperature of 84.9°F (29.4°C) and an average low-temperature of 64.9°F (18.3°C).

What month has the most sunshine in South Yankton?

With an average of 10.8h of sunshine, July has the most sunshine of the year in South Yankton, Nebraska.

What is the least humid month in South Yankton?

The least humid month in South Yankton is October, with an average relative humidity of 64%.

What is the snowiest month in South Yankton?

December is the month with the most snowfall in South Yankton. Snow falls for 8.1 days and accumulates 2.95" (75mm) of snow.

What is the month with the shortest days in South Yankton?

The month with the shortest days is December, with an average of 9.1h of daylight.
Average temperature - South Yankton, NE
Average pressure - South Yankton, NE

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.85").

Average wind speed - South Yankton, NE

The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.9mph).

Average humidity - South Yankton, NE
Average rainfall - South Yankton, NE
Average rainfall days - South Yankton, NE

The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (2.3 days).

Average snowfall - South Yankton, NE
Average snowfall days - South Yankton, NE

The month with the highest number of snowfall days is January (9.7 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine - South Yankton, NE

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9.1h).

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is January (Average sunshine: 4.4h).

Average sunshine days - South Yankton, NE

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (9.3 days).

Average visibility - South Yankton, NE

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).