Climate and monthly weather forecast
Gary, SD

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Weather in January

January, the same as December, in Gary, South Dakota, is a freezing cold winter month, with temperature in the range of an average low of 7.2°F (-13.8°C) and an average high of 20.5°F (-6.4°C). In Gary, January is the month with the lowest recorded average temperatures, measuring a high of 20.5°F (-6.4°C) and a low of 7.2°F (-13.8°C). Weather in January »

Weather in February

The last month of the winter, February, is another freezing cold month in Gary, South Dakota, with temperature in the range of an average high of 23.9°F (-4.5°C) and an average low of 9.9°F (-12.3°C). Gary's average high-temperature in February is a still subzero cold 23.9°F (-4.5°C), indicating a subtle variation from January. Weather in February »

Weather in March

The first month of the spring, March, is an icy month in Gary, South Dakota, with an average temperature ranging between max 39°F (3.9°C) and min 24.8°F (-4°C). The onset of March marks a clear increase in the average high-temperature, escalating from a subzero cold 23.9°F (-4.5°C) in February to a wintry 39°F (3.9°C). Weather in March »

Weather in April

April in Gary, South Dakota, is a cool spring month, with an average temperature ranging between min 37°F (2.8°C) and max 53.2°F (11.8°C). The onset of April brings a temperature shift, with the average high-temperature moving from a cold 39°F (3.9°C) in March to a fresh 53.2°F (11.8°C). Weather in April »

Weather in May

The last month of the spring, May, is a refreshing month in Gary, South Dakota, with an average temperature ranging between max 66.4°F (19.1°C) and min 48.6°F (9.2°C). May brings a temperature change, with average high-temperatures moving from April's fresh 53.2°F (11.8°C) to a comfortable 66.4°F (19.1°C). Weather in May »

Weather in June

June, the first month of the summer in Gary, is a moderately hot month, with an average temperature ranging between max 75.7°F (24.3°C) and min 58.6°F (14.8°C). The arrival of June brings a temperature shift, with the average high-temperature escalating from an enjoyable 66.4°F (19.1°C) in May to a moderately hot 75.7°F (24.3°C). Weather in June »

Weather in July

July, like June, in Gary, South Dakota, is another warm summer month, with temperature in the range of an average low of 62.1°F (16.7°C) and an average high of 81.1°F (27.3°C). With average high temperatures of 81.1°F (27.3°C) and lows of 62.1°F (16.7°C), July is the warmest month. The heat index in July is appraised at a tropical 86°F (30°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Gary, South Dakota, with an average temperature fluctuating between 80.1°F (26.7°C) and 59.5°F (15.3°C). The arrival of August sees a recorded average high-temperature of a still warm 80.1°F (26.7°C), showing little divergence from the previous month's conditions. Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Gary, South Dakota, with an average temperature fluctuating between 72.5°F (22.5°C) and 52.7°F (11.5°C). September ushers in a minute temperature change, with average high-temperatures reducing from August's warm 80.1°F (26.7°C) to an agreeable 72.5°F (22.5°C). Weather in September »

Weather in October

October, like September, is a moderate autumn month in Gary, South Dakota, with an average temperature fluctuating between 56.3°F (13.5°C) and 41°F (5°C). The shift into October is marked by a noticeable reduction in the average high-temperature, decreasing from September's pleasant 72.5°F (22.5°C) to a mild 56.3°F (13.5°C). Weather in October »

Weather in November

November, the last month of the autumn in Gary, is another cold month, with an average temperature varying between 41.4°F (5.2°C) and 28.2°F (-2.1°C). Gary sees a considerable decrease in average high-temperatures during November, falling from a refreshing 56.3°F (13.5°C) in October to a wintry 41.4°F (5.2°C). Weather in November »

Weather in December

December, the first month of the winter in Gary, is still a freezing cold month, with an average temperature fluctuating between 14°F (-10°C) and 25.3°F (-3.7°C). In December, the average high-temperature decreases considerably from a wintry 41.4°F (5.2°C) in November to a subzero cold 25.3°F (-3.7°C). Weather in December »
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Frequently asked questions

What month is the coldest in Gary?

The coldest month in Gary, South Dakota, is January, with an average high-temperature of 20.5°F (-6.4°C) and an average low-temperature of 7.2°F (-13.8°C).

What is the most humid month in Gary?

January is the most humid month in Gary, South Dakota, with an average relative humidity of 89%.

What is the driest month in Gary?

The month with the least rainfall in Gary is January, when the rain falls for 1.7 days and typically collects 0.43" (11mm) of precipitation.

How many days does it rain in Gary?

In Gary, during the entire year, the rain falls for 101.9 days and collects up to 14.61" (371mm) of precipitation.

When does it snow in Gary?

Months with snowfall in Gary, South Dakota, are January through May, October through December.

How many days does it snow in Gary?

Throughout the year, in Gary, there are 49.9 snowfall days, and 14.02" (356mm) of snow is accumulated.

What is the month with the least sunshine in Gary?

With an average of 4h of sunshine, January has the least sunshine of the year in Gary.

What are the months with the lowest UV index in Gary?

January and November, with an average maximum UV index of 1, are months with the lowest UV index in Gary.

What is the snowiest month in Gary?

The month with the most snowfall is February, when snow falls for 10.1 days and typically aggregates up to 3.27" (83mm) of snow.

When is Daylight Saving Time (DST) in Gary?

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

In Gary, South Dakota, snow does not fall in June through September.

When are the longest days in Gary?

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

When is the highest UV index in Gary?

The months with the highest UV index in Gary, South Dakota, are June and July, with an average maximum UV index of 6.

What part of the year is the hottest in Gary?

July is the month when Gary's temperatures reach their peak, with averages of 81.1°F (27.3°C) and lows of 62.1°F (16.7°C).

What is the rainiest month in Gary?

The month with the most rainfall in Gary is July, when the rain falls for 13.2 days and typically aggregates up to 2.56" (65mm) of precipitation.

What month has the most sunshine in Gary?

July has the most sunshine of the year in Gary, with an average of 10.6h of sunshine.

What is the least humid month in Gary?

The least humid month in Gary is October, with an average relative humidity of 67%.

What is the month with the shortest days in Gary?

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

Average pressure
Gary, SD

Average pressure - Gary, SD

The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

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Average wind speed
Gary, SD

Average wind speed - Gary, SD

The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is July (8mph).

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Average rainfall
Gary, SD

Average rainfall - Gary, SD

The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is January (0.43").

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Average rainfall days
Gary, SD

Average rainfall days - Gary, SD

The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is January (1.7 days).

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Average snowfall
Gary, SD

Average snowfall - Gary, SD

The month with the highest snowfall is February (3.27").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Gary, SD

Average snowfall days - Gary, SD

The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Gary, SD

Average daylight / Average sunshine - Gary, 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: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days
Gary, SD

Average sunshine days - Gary, SD

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (11.3 days).

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Average visibility
Gary, SD

Average visibility - Gary, 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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Gary, South Dakota, USA

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