Climate and monthly weather forecast
Saint Charles, SD

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Weather in January

January, the same as December, in Saint Charles, South Dakota, is a freezing cold winter month, with an average temperature varying between 17.2°F (-8.2°C) and 29.7°F (-1.3°C). In Saint Charles, South Dakota, the month of January registers the lowest temperatures, averaging 29.7°F (-1.3°C) at the peak and 17.2°F (-8.2°C) at the lowest. Weather in January »

Weather in February

February, the last month of the winter in Saint Charles, is an icy month, with an average temperature fluctuating between 19.4°F (-7°C) and 33.1°F (0.6°C). February's average high-temperature is a cold 33.1°F (0.6°C), maintaining a close comparison with January's 29.7°F (-1.3°C). Weather in February »

Weather in March

The first month of the spring, March, is a chilly month in Saint Charles, South Dakota, with an average temperature fluctuating between 31.6°F (-0.2°C) and 47.5°F (8.6°C). The onset of March brings a clear temperature shift, with the average high-temperature escalating from an icy 33.1°F (0.6°C) in February to a frosty 47.5°F (8.6°C). Weather in March »

Weather in April

April in Saint Charles, South Dakota, is a mild spring month, with an average temperature varying between 40.3°F (4.6°C) and 57.2°F (14°C). The transition from March to April brings a temperature rise, with average high-temperatures increasing from a frosty 47.5°F (8.6°C) to a mild 57.2°F (14°C). Weather in April »

Weather in May

The last month of the spring, May, is a comfortable month in Saint Charles, South Dakota, with an average temperature ranging between max 67.5°F (19.7°C) and min 50.4°F (10.2°C). Saint Charles's transition into May is marked by a temperature shift, moving from a moderate 57.2°F (14°C) in April to an enjoyable 67.5°F (19.7°C). Weather in May »

Weather in June

June, the first month of the summer in Saint Charles, is a warm month, with an average temperature ranging between min 61.2°F (16.2°C) and max 78.4°F (25.8°C). June brings a temperature change, with average high-temperatures moving from May's comfortable 67.5°F (19.7°C) to a warm 78.4°F (25.8°C). Weather in June »

Weather in July

July, like June, in Saint Charles, South Dakota, is another warm summer month, with temperature in the range of an average low of 65.1°F (18.4°C) and an average high of 85.1°F (29.5°C). In Saint Charles, the month of July is known for its highest average temperatures, reaching a high of 85.1°F (29.5°C) and a low of 65.1°F (18.4°C). The average heat index in July is computed to be a tropical 91.4°F (33°C). Weather in July »

Weather in August

August, the last month of the summer in Saint Charles, is also a moderately hot month, with an average temperature ranging between min 62.6°F (17°C) and max 83.5°F (28.6°C). The commencement of August brings an average high-temperature of a still warm 83.5°F (28.6°C), marking an inconsequential divergence from July. Weather in August »

Weather in September

September, the first month of the autumn in Saint Charles, is also a moderately hot month, with temperature in the range of an average high of 75.4°F (24.1°C) and an average low of 55.6°F (13.1°C). In September, the average high-temperature marginally drops from a warm 83.5°F (28.6°C) in August to a still moderately hot 75.4°F (24.1°C). Weather in September »

Weather in October

October, the same as September, in Saint Charles, South Dakota, is another refreshing autumn month, with an average temperature varying between 42.8°F (6°C) and 58.8°F (14.9°C). Saint Charles's transition into October is marked by a clear temperature shift, receding from a warm 75.4°F (24.1°C) in September to a refreshing 58.8°F (14.9°C). Weather in October »

Weather in November

November, the last month of the autumn in Saint Charles, is also a frosty month, with temperature in the range of an average low of 32.2°F (0.1°C) and an average high of 46.4°F (8°C). The onset of November is marked by a decrease in temperature, transitioning from a refreshing 58.8°F (14.9°C) in October to a frosty 46.4°F (8°C). Weather in November »

Weather in December

December, the first month of the winter in Saint Charles, is still a freezing cold month, with an average temperature varying between 31.5°F (-0.3°C) and 20.7°F (-6.3°C). December's arrival sees a clear drop in the average high-temperature, decreasing from November's frosty 46.4°F (8°C) to a subzero cold 31.5°F (-0.3°C). Weather in December »
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Frequently asked questions

What is the coldest month in Saint Charles?

Saint Charles's January weather reaches an average high of 29.7°F (-1.3°C) and an average low of 17.2°F (-8.2°C), making it the coldest month.

What is the most humid month in Saint Charles?

The most humid month is January, with an average relative humidity of 81%.

What is the driest month in Saint Charles?

January is the month with the least rainfall. Rain falls for 1.6 days and accumulates 0.43" (11mm) of precipitation.

How much does it rain in Saint Charles?

In Saint Charles, South Dakota, during the entire year, the rain falls for 109.3 days and collects up to 19.41" (493mm) of precipitation.

When does it snow in Saint Charles?

January through May, October through December are months with snowfall in Saint Charles.

How much does it snow in Saint Charles?

Throughout the year, in Saint Charles, South Dakota, there are 33.1 snowfall days, and 14.29" (363mm) of snow is accumulated.

What is the month with the least sunshine in Saint Charles?

The month with the least sunshine in Saint Charles is January, with an average of 4.9h of sunshine.

What is the month with the lowest UV index in Saint Charles?

The months with the lowest UV index in Saint Charles are January, February, November and December, with an average maximum UV index of 2.

When is Daylight Saving Time (DST) in Saint Charles?

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

May is the month with the most rainfall in Saint Charles, South Dakota. Rain falls for 17.1 days and accumulates 3.03" (77mm) of precipitation.

When it does not snow in Saint Charles?

June through September are months without snowfall in Saint Charles.

When are the longest days in Saint Charles?

June has the longest days of the year, with an average of 15h and 18min of daylight.

What is the month with the highest UV index in Saint Charles?

The months with the highest UV index in Saint Charles, South Dakota, are June through August, with an average maximum UV index of 6.

What time of the year is the hottest in Saint Charles?

The warmest time of the year in Saint Charles is July, with temperatures averaging a high of 85.1°F (29.5°C) and a low of 65.1°F (18.4°C).

What month has the most sunshine in Saint Charles?

With an average of 10.9h of sunshine, July has the most sunshine of the year in Saint Charles, South Dakota.

What is the least humid month in Saint Charles?

October is the least humid month in Saint Charles, with an average relative humidity of 61%.

What is the snowiest month in Saint Charles?

December is the month with the most snowfall in Saint Charles, South Dakota. Snow falls for 5.8 days and accumulates 3.66" (93mm) of snow.

What is the month with the shortest days in Saint Charles?

The month with the shortest days in Saint Charles is December, with an average of 9h and 6min of daylight.

Average temperature
Saint Charles, SD

Average temperature - Saint Charles, SD

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (29.7°F).

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).

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Average pressure
Saint Charles, SD

Average pressure - Saint Charles, SD

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

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Average wind speed
Saint Charles, SD

Average wind speed - Saint Charles, SD

The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is July (9.3mph).

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Average humidity
Saint Charles, SD

Average humidity - Saint Charles, SD

The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is October (61%).

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Average rainfall
Saint Charles, SD

Average rainfall - Saint Charles, SD

The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is January (0.43").

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Average rainfall days
Saint Charles, SD

Average rainfall days - Saint Charles, SD

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (1.6 days).

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Average snowfall
Saint Charles, SD

Average snowfall - Saint Charles, SD

The month with the highest snowfall is December (3.66").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Saint Charles, SD

Average snowfall days - Saint Charles, SD

The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Saint Charles, SD

Average daylight / Average sunshine - Saint Charles, 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 6min).

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).

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Average sunshine days
Saint Charles, SD

Average sunshine days - Saint Charles, SD

The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is June (9.6 days).

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Average UV index
Saint Charles, SD

Average UV index - Saint Charles, SD

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average visibility
Saint Charles, SD

Average visibility - Saint Charles, 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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Saint Charles, South Dakota, USA

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