Climate and monthly weather forecast
Harrison, SD

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Weather in January

January, like December, is a freezing cold winter month in Harrison, South Dakota, with an average temperature fluctuating between 13.6°F (-10.2°C) and 27.3°F (-2.6°C). January stands out as Harrison's coldest month, with an average high-temperature of 27.3°F (-2.6°C) and a low-temperature of 13.6°F (-10.2°C). Weather in January »

Weather in February

February, the last month of the winter in Harrison, is also a subzero cold month, with an average temperature ranging between max 31.5°F (-0.3°C) and min 16.9°F (-8.4°C). The arrival of February records an average high-temperature of a still subzero cold 31.5°F (-0.3°C), closely related to the 27.3°F (-2.6°C) observed in January. Weather in February »

Weather in March

March, the first month of the spring in Harrison, is a chilly month, with an average temperature ranging between max 46.9°F (8.3°C) and min 30.4°F (-0.9°C). As March begins, there is a noticeable increase in the average high-temperature, soaring from a subzero cold 31.5°F (-0.3°C) in February to a chilly 46.9°F (8.3°C). Weather in March »

Weather in April

April in Harrison, South Dakota, is a moderate spring month, with an average temperature fluctuating between 39.7°F (4.3°C) and 57.7°F (14.3°C). An increase in the average high-temperature marks April, moving from March's frosty 46.9°F (8.3°C) to a mild 57.7°F (14.3°C). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Harrison, South Dakota, with temperature in the range of an average high of 68.5°F (20.3°C) and an average low of 50.4°F (10.2°C). The onset of May brings a temperature shift, with the average high-temperature moving from a mild 57.7°F (14.3°C) in April to an agreeable 68.5°F (20.3°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Harrison, South Dakota, with an average temperature ranging between max 79.5°F (26.4°C) and min 61.3°F (16.3°C). The start of June brings a shift in the average high-temperature, increasing from May's agreeable 68.5°F (20.3°C) to a warm 79.5°F (26.4°C). Weather in June »

Weather in July

July in Harrison, South Dakota, is a hot summer month, with an average temperature fluctuating between 86.5°F (30.3°C) and 65.7°F (18.7°C). The warmest temperatures occur during July, when averages reach a peak of 86.5°F (30.3°C) and a low of 65.7°F (18.7°C). The heat index value during July is estimated at a sweltering 95°F (35°C). Weather in July »

Weather in August

August, the last month of the summer in Harrison, is also a moderately hot month, with an average temperature varying between 85.1°F (29.5°C) and 62.8°F (17.1°C). The commencement of August notes an average high-temperature of a moderately hot 85.1°F (29.5°C), exhibiting little difference from the previous month. Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Harrison, South Dakota, with temperature in the range of an average low of 55.4°F (13°C) and an average high of 76.3°F (24.6°C). September reveals a small adjustment in temperature, transitioning from an average high of 85.1°F (29.5°C) in August to a still moderately hot 76.3°F (24.6°C). Weather in September »

Weather in October

October, the same as September, in Harrison, South Dakota, is another refreshing autumn month, with an average temperature varying between 42.4°F (5.8°C) and 59.7°F (15.4°C). In Harrison, the onset of October is marked by a decreased average high-temperature, declining from September's warm 76.3°F (24.6°C) to a mild 59.7°F (15.4°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Harrison, South Dakota, with temperature in the range of an average high of 46.4°F (8°C) and an average low of 30.9°F (-0.6°C). In Harrison, the average high-temperature in November drops from a refreshing 59.7°F (15.4°C) in October to a chilly 46.4°F (8°C). Weather in November »

Weather in December

December, the first month of the winter in Harrison, is also a subzero cold month, with temperature in the range of an average low of 18.3°F (-7.6°C) and an average high of 30.4°F (-0.9°C). Harrison's transition into December is marked by a distinct drop in the average high-temperature, reducing from a chilly 46.4°F (8°C) in November to a subzero cold 30.4°F (-0.9°C). Weather in December »
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Frequently asked questions

What time of the year is the coldest in Harrison?

The coldest period is January, when temperatures fluctuate between an average high of 27.3°F (-2.6°C) and a low of 13.6°F (-10.2°C).

What is the most humid month in Harrison?

January is the most humid month in Harrison, South Dakota, with an average relative humidity of 84%.

How much does it rain in Harrison?

Throughout the year, in Harrison, South Dakota, there are 104.1 rainfall days, and 14.29" (363mm) of precipitation is accumulated.

When does it snow in Harrison?

Months with snowfall in Harrison, South Dakota, are January through April, October through December.

What is the snowiest month in Harrison?

The months with the most snowfall are January and March, with an average 1.93" (49mm) of accumulated snow.

How many days does it snow in Harrison?

In Harrison, during the entire year, snow falls for 32.8 days and aggregates up to 8.35" (212mm) of snow.

What is the month with the least sunshine in Harrison?

With an average of 4.7h of sunshine, January has the least sunshine of the year.

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

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

What is the driest month in Harrison?

The month with the least rainfall is February, when the rain falls for 3.6 days and typically collects 0.31" (8mm) of precipitation.

When is Daylight Saving Time (DST) in Harrison?

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.

What is the wettest month in Harrison?

May is the month with the most rainfall in Harrison, South Dakota. Rain falls for 15.3 days and accumulates 2.72" (69mm) of precipitation.

When it does not snow in Harrison?

May through September are months without snowfall.

When are the longest days in Harrison?

With an average of 15h and 24min of daylight, June has the longest days of the year in Harrison.

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

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

What month is the hottest in Harrison?

July is the month when Harrison's temperatures reach their peak, with averages of 86.5°F (30.3°C) and lows of 65.7°F (18.7°C).

What month has the most sunshine in Harrison?

July has the most sunshine of the year, with an average of 11.1h of sunshine.

What is the least humid month in Harrison?

With an average relative humidity of 62%, October is the least humid month.

What is the month with the shortest days in Harrison?

With an average of 9h and 0min of daylight, December has the shortest days of the year.

Average temperature
Harrison, SD

Average temperature - Harrison, SD

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (27.3°F).

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).

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Average pressure
Harrison, SD

Average pressure - Harrison, 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
Harrison, SD

Average wind speed - Harrison, SD

The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).

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Average rainfall
Harrison, SD

Average rainfall - Harrison, SD

The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is February (0.31").

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Average rainfall days
Harrison, SD

Average rainfall days - Harrison, SD

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (2.9 days).

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Average snowfall
Harrison, SD

Average snowfall - Harrison, SD

The months with the highest snowfall are January and March (1.93").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days
Harrison, SD

Average snowfall days - Harrison, SD

The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight / Average sunshine
Harrison, SD

Average daylight / Average sunshine - Harrison, SD

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

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Average sunshine days
Harrison, SD

Average sunshine days - Harrison, SD

The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is June (12.3 days).

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Average UV index
Harrison, SD

Average UV index - Harrison, 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
Harrison, SD

Average visibility - Harrison, 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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Harrison, South Dakota, USA

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