Climate and monthly weather forecast
Stephan, SD

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Weather in January

January, the same as December, in Stephan, South Dakota, is a freezing cold winter month, with an average temperature varying between 9.1°F (-12.7°C) and 23.4°F (-4.8°C). January, characterized by an average high temperature of 23.4°F (-4.8°C) and a low temperature of 9.1°F (-12.7°C), is generally the coldest month. Weather in January »

Weather in February

February, the last month of the winter in Stephan, is also a subzero cold month, with an average temperature ranging between max 26.2°F (-3.2°C) and min 12.6°F (-10.8°C). February is marked by an average high-temperature of a still freezing cold 26.2°F (-3.2°C), almost identical to the preceding month. Weather in February »

Weather in March

The first month of the spring, March, is an icy month in Stephan, South Dakota, with temperature in the range of an average low of 26.1°F (-3.3°C) and an average high of 41.4°F (5.2°C). With the onset of March, Stephan's weather experiences a distinct temperature rise, moving from a freezing cold 26.2°F (-3.2°C) in February to a cold 41.4°F (5.2°C). Weather in March »

Weather in April

April is a cool spring month in Stephan, South Dakota, with an average temperature fluctuating between 36.9°F (2.7°C) and 54.5°F (12.5°C). April brings a temperature change, with average high-temperatures moving from March's icy 41.4°F (5.2°C) to a fresh 54.5°F (12.5°C). Weather in April »

Weather in May

May, the last month of the spring in Stephan, is a refreshing month, with an average temperature varying between 48.2°F (9°C) and 66.7°F (19.3°C). With the arrival of May, the average high-temperature transitions from a fresh 54.5°F (12.5°C) in April to an enjoyable 66.7°F (19.3°C). Weather in May »

Weather in June

June, the first month of the summer in Stephan, is a warm month, with an average temperature varying between 77.9°F (25.5°C) and 58.6°F (14.8°C). The start of June is characterized by an increase in the average high-temperature, transitioning from a refreshing 66.7°F (19.3°C) in May to a warm 77.9°F (25.5°C). Weather in June »

Weather in July

July, like June, in Stephan, South Dakota, is another warm summer month, with an average temperature fluctuating between 64.6°F (18.1°C) and 85.8°F (29.9°C). July, with its average high-temperature of 85.8°F (29.9°C) and an average low-temperature of 64.6°F (18.1°C), holds the record as the warmest month. The heat index value for July is evaluated at a hot 91.4°F (33°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Stephan, South Dakota, with temperature in the range of an average high of 84°F (28.9°C) and an average low of 62.1°F (16.7°C). The arrival of August brings an average high-temperature of a still warm 84°F (28.9°C), nearly identical to July's 85.8°F (29.9°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Stephan, South Dakota, with an average temperature ranging between max 75.4°F (24.1°C) and min 54.5°F (12.5°C). With the commencement of September, Stephan records a moderate temperature decline, with the average high easing from August's warm 84°F (28.9°C) to a still moderately hot 75.4°F (24.1°C). Weather in September »

Weather in October

October, the same as September, in Stephan, South Dakota, is a moderate autumn month, with an average temperature fluctuating between 56.8°F (13.8°C) and 41.2°F (5.1°C). October marks a distinct drop in the average high-temperature, descending from September's moderately hot 75.4°F (24.1°C) to a mild 56.8°F (13.8°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a frosty month in Stephan, South Dakota, with an average temperature ranging between min 28.4°F (-2°C) and max 43.7°F (6.5°C). The beginning of November marks a decrease in the average high-temperature, transitioning from a moderate 56.8°F (13.8°C) in October to a chilly 43.7°F (6.5°C). Weather in November »

Weather in December

The first month of the winter, December, is still a freezing cold month in Stephan, South Dakota, with an average temperature fluctuating between 14.9°F (-9.5°C) and 26.8°F (-2.9°C). December indicates a noticeable reduction in the average high-temperature, moving down from a chilly 43.7°F (6.5°C) in November to a freezing cold 26.8°F (-2.9°C). Weather in December »
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Frequently asked questions

What part of the year is the coldest in Stephan?

Stephan's January weather reaches an average high of 23.4°F (-4.8°C) and an average low of 9.1°F (-12.7°C), making it the coldest month.

What is the most humid month in Stephan?

The most humid month in Stephan, South Dakota, is January, with an average relative humidity of 88%.

What is the driest month in Stephan?

The month with the least rainfall in Stephan is January, when the rain falls for 2.4 days and typically collects 0.43" (11mm) of precipitation.

How much does it rain in Stephan?

Throughout the year, in Stephan, there are 97.3 rainfall days, and 16.73" (425mm) of precipitation is accumulated.

When does it snow in Stephan?

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

How many days does it snow in Stephan?

In Stephan, during the entire year, snow falls for 47.1 days and aggregates up to 16.06" (408mm) of snow.

What is the month with the least sunshine in Stephan?

The month with the least sunshine is January, with an average of 4.1h of sunshine.

What is the snowiest month in Stephan?

The month with the most snowfall is February, when snow falls for 10.1 days and typically aggregates up to 4.21" (107mm) of snow.

What is the month with the lowest UV index in Stephan?

The month with the lowest UV index in Stephan, South Dakota, is February, with an average maximum UV index of 1.

When is Daylight Saving Time (DST) in Stephan?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Stephan, 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.

When it does not snow in Stephan?

In Stephan, snow does not fall in June through September.

When are the longest days in Stephan?

The month with the longest days is June, with an average of 15h and 30min of daylight.

What are the months with the highest UV index in Stephan?

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

What is the warmest month in Stephan?

The warmest temperatures in Stephan occur during July, when averages reach a peak of 85.8°F (29.9°C) and a low of 64.6°F (18.1°C).

What is the rainiest month in Stephan?

July is the month with the most rainfall. Rain falls for 12.7 days and accumulates 3.07" (78mm) of precipitation.

What month has the most sunshine in Stephan?

With an average of 11h of sunshine, July has the most sunshine of the year in Stephan.

What is the least humid month in Stephan?

The least humid month in Stephan, South Dakota, is September, with an average relative humidity of 60%.

What is the month with the shortest days in Stephan?

The month with the shortest days in Stephan, South Dakota, is December, with an average of 8h and 54min of daylight.

Average temperature
Stephan, SD

Average temperature - Stephan, SD

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (23.4°F).

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (9.1°F).

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Average pressure
Stephan, SD

Average pressure - Stephan, SD

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

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Average wind speed
Stephan, SD

Average wind speed - Stephan, SD

The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).

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Average rainfall
Stephan, SD

Average rainfall - Stephan, SD

The wettest month (with the highest rainfall) is July (3.07").
The driest month (with the least rainfall) is January (0.43").

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Average rainfall days
Stephan, SD

Average rainfall days - Stephan, SD

The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is February (1.3 days).

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Average snowfall
Stephan, SD

Average snowfall - Stephan, SD

The month with the highest snowfall is February (4.21").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Stephan, SD

Average snowfall days - Stephan, SD

The months with the highest number of snowfall days are January and February (10.1 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight / Average sunshine
Stephan, SD

Average daylight / Average sunshine - Stephan, SD

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).

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days
Stephan, SD

Average sunshine days - Stephan, SD

The month with the most sunshine days is November (22.1 days).
The month with the least sunshine days is June (12.4 days).

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Average visibility
Stephan, SD

Average visibility - Stephan, 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).

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Stephan, South Dakota, USA

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