Climate and monthly weather forecast
Lebanon, SD

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Weather in January

January, the same as December, in Lebanon, South Dakota, is another subzero cold winter month, with an average temperature varying between 22.6°F (-5.2°C) and 9.1°F (-12.7°C). January is the month that records the lowest temperatures, with averages ranging from a high of 22.6°F (-5.2°C) to a low of 9.1°F (-12.7°C). Weather in January »

Weather in February

February, the last month of the winter in Lebanon, is also a subzero cold month, with an average temperature ranging between min 11.8°F (-11.2°C) and max 25.2°F (-3.8°C). The shift into February reveals an average high-temperature of a still subzero cold 25.2°F (-3.8°C), closely mirroring January's climate. Weather in February »

Weather in March

March, the first month of the spring in Lebanon, is a wintry month, with temperature in the range of an average low of 25.5°F (-3.6°C) and an average high of 39.9°F (4.4°C). March indicates a noticeable escalation in the average high-temperature, moving up from a freezing cold 25.2°F (-3.8°C) in February to a wintry 39.9°F (4.4°C). Weather in March »

Weather in April

April is a fresh spring month in Lebanon, South Dakota, with an average temperature ranging between min 36.7°F (2.6°C) and max 54°F (12.2°C). An upsurge in temperatures occurs as March gives way to April, with average highs shifting from a wintry 39.9°F (4.4°C) to a fresh 54°F (12.2°C). Weather in April »

Weather in May

The last month of the spring, May, is an enjoyable month in Lebanon, South Dakota, with an average temperature fluctuating between 47.8°F (8.8°C) and 66.2°F (19°C). Lebanon's weather in May shows a rise in the average high-temperature, moving up from April's cool 54°F (12.2°C) to an enjoyable 66.2°F (19°C). Weather in May »

Weather in June

June, the first month of the summer in Lebanon, is a warm month, with an average temperature fluctuating between 58.5°F (14.7°C) and 77.9°F (25.5°C). As May transitions into June, Lebanon sees a rise in the average high-temperature, moving from a comfortable 66.2°F (19°C) to a warm 77.9°F (25.5°C). Weather in June »

Weather in July

July, like June, in Lebanon, South Dakota, is a moderately hot summer month, with temperature in the range of an average low of 64.9°F (18.3°C) and an average high of 85.8°F (29.9°C). Temperature readings reach their annual highs in July, averaging 85.8°F (29.9°C) and a minimum average of 64.9°F (18.3°C). In July, the heat index is computed to be a tropical 89.6°F (32°C). Weather in July »

Weather in August

August, the last month of the summer in Lebanon, is also a moderately hot month, with temperature in the range of an average high of 83.8°F (28.8°C) and an average low of 63°F (17.2°C). As Lebanon steps into August, the average high-temperature holds at a still warm 83.8°F (28.8°C), hinting at a minor fluctuation from the prior month. Weather in August »

Weather in September

September, the first month of the autumn in Lebanon, is still a warm month, with an average temperature varying between 54.5°F (12.5°C) and 74.5°F (23.6°C). The onset of September results in a decrease in the average high-temperature, receding from 83.8°F (28.8°C) in August to a still warm 74.5°F (23.6°C). Weather in September »

Weather in October

October, like September, is another mild autumn month in Lebanon, South Dakota, with an average temperature fluctuating between 55.9°F (13.3°C) and 40.6°F (4.8°C). With the transition into October, Lebanon experiences a significant decrease in average high-temperatures, moving down from a warm 74.5°F (23.6°C) in September to a refreshing 55.9°F (13.3°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a wintry month in Lebanon, South Dakota, with temperature in the range of an average low of 27.9°F (-2.3°C) and an average high of 41.9°F (5.5°C). The onset of November coincides with a reduction in the average high-temperature, falling from a refreshing 55.9°F (13.3°C) in October to a wintry 41.9°F (5.5°C). Weather in November »

Weather in December

December, the first month of the winter in Lebanon, is also a subzero cold month, with an average temperature fluctuating between 25.5°F (-3.6°C) and 14.2°F (-9.9°C). The arrival of December is marked by a notable decrease in high-temperatures, falling from a cold 41.9°F (5.5°C) in November to a subzero cold 25.5°F (-3.6°C). Weather in December »
Updated: Jul 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months?

With an average high-temperature of 22.6°F (-5.2°C) and an average low-temperature of 9.1°F (-12.7°C), January is the coldest month in Lebanon.

What is the most humid month?

January is the most humid month, with an average relative humidity of 88%.

What is the driest month?

January is the month with the least rainfall. Rain falls for 2.8 days and accumulates 0.55" (14mm) of precipitation.

How much does it rain?

In Lebanon, during the entire year, the rain falls for 97.8 days and collects up to 16.65" (423mm) of precipitation.

When does it snow?

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

How much does it snow?

In Lebanon, during the entire year, snow falls for 59.7 days and aggregates up to 19.96" (507mm) of snow.

What is the month with the least sunshine?

January has the least sunshine of the year, with an average of 3.9h of sunshine.

What is the month with the lowest UV index?

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

What is the snowiest month?

The month with the most snowfall is February, when snow falls for 12.3 days and typically aggregates up to 5.04" (128mm) of snow.

When is Daylight Saving Time (DST)?

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 rainiest month?

The month with the most rainfall is June, when the rain falls for 14.4 days and typically aggregates up to 2.8" (71mm) of precipitation.

When it does not snow?

June through September are months without snowfall in Lebanon.

When are the longest days?

June has the longest days of the year, with an average of 15h and 36min of daylight.

When is the highest UV index?

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

What are the warmest months?

Temperature readings in Lebanon reach their annual highs in July, averaging 85.8°F (29.9°C) and a minimum average of 64.9°F (18.3°C).

What month has the most sunshine?

The month with the most sunshine is July, with an average of 11.2h of sunshine.

What is the least humid month?

The months with the lowest humidity are August and September, with an average relative humidity of 56%.

What is the month with the shortest days?

With an average of 8h and 48min of daylight, December has the shortest days of the year in Lebanon.

Average temperature
Lebanon, SD

Average temperature - Lebanon, 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 (22.6°F).

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (9.1°F).

Average pressure
Lebanon, SD

Average pressure - Lebanon, 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).

Average wind speed
Lebanon, SD

Average wind speed - Lebanon, SD

The windiest month (with the highest average wind speed) is April (11.8mph).
The calmest month (with the lowest average wind speed) is August (9.7mph).

Average humidity
Lebanon, SD

Average humidity - Lebanon, SD

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are August and September (56%).

Average rainfall
Lebanon, SD

Average rainfall - Lebanon, SD

The wettest month (with the highest rainfall) is June (2.8").
The driest month (with the least rainfall) is January (0.55").

Average rainfall days
Lebanon, SD

Average rainfall days - Lebanon, SD

The month with the highest number of rainy days is June (14.4 days).
The month with the least rainy days is February (1.9 days).

Average snowfall
Lebanon, SD

Average snowfall - Lebanon, SD

The month with the highest snowfall is February (5.04").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Lebanon, SD

Average snowfall days - Lebanon, SD

The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Lebanon, SD

Average daylight / Average sunshine - Lebanon, SD

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days
Lebanon, SD

Average sunshine days - Lebanon, SD

The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (13.1 days).

Average UV index
Lebanon, SD

Average UV index - Lebanon, 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 1).

Average visibility
Lebanon, SD

Average visibility - Lebanon, 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).

Lebanon, South Dakota, USA

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