Climate and monthly weather forecast
South Lebanon, OR

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Weather in January

January, like December, is a frosty winter month in South Lebanon, Oregon, with an average temperature fluctuating between 47.7°F (8.7°C) and 35.2°F (1.8°C). The advent of January reveals an average high-temperature of a still frosty 47.7°F (8.7°C), showing minimal difference from the prior month. Weather in January »

Weather in February

The last month of the winter, February, is also a frosty month in South Lebanon, Oregon, with an average temperature ranging between min 34.7°F (1.5°C) and max 48.4°F (9.1°C). As January turns into February, the average high-temperatures rest at a still frosty 48.4°F (9.1°C), showing a minor variation from the prior month. Weather in February »

Weather in March

The first month of the spring, March, is a fresh month in South Lebanon, Oregon, with an average temperature varying between 51.6°F (10.9°C) and 36.3°F (2.4°C). The onset of March brings with it an average high-temperature of a cool 51.6°F (10.9°C), showing a negligible variation from the month before. Weather in March »

Weather in April

April in South Lebanon, Oregon, is a refreshing spring month, with temperature in the range of an average high of 57.6°F (14.2°C) and an average low of 37.9°F (3.3°C). April brings a slight rise in South Lebanon's average high-temperature, moving from a cool 51.6°F (10.9°C) in March to a refreshing 57.6°F (14.2°C). Weather in April »

Weather in May

The last month of the spring, May, is an enjoyable month in South Lebanon, Oregon, with an average temperature varying between 41.5°F (5.3°C) and 65.3°F (18.5°C). May witnesses a subtle temperature ascent, adjusting from a refreshing 57.6°F (14.2°C) in April to a comfortable 65.3°F (18.5°C). Weather in May »

Weather in June

June, the first month of the summer in South Lebanon, is an agreeable month, with an average temperature fluctuating between 70.9°F (21.6°C) and 46°F (7.8°C). The start of June is characterized by a subtle increase in the average high-temperature, transitioning from a refreshing 65.3°F (18.5°C) in May to a pleasant 70.9°F (21.6°C). Weather in June »

Weather in July

July in South Lebanon, Oregon, is a warm summer month, with an average temperature ranging between min 50.5°F (10.3°C) and max 79.5°F (26.4°C). In South Lebanon, the average high-temperature in July slightly increases from a pleasant 70.9°F (21.6°C) in June to a warm 79.5°F (26.4°C). Weather in July »

Weather in August

August, the last month of the summer in South Lebanon, is another warm month, with an average temperature varying between 51.8°F (11°C) and 81.1°F (27.3°C). August, having an average high-temperature of 81.1°F (27.3°C) and an average low-temperature of 51.8°F (11°C), is the warmest month. August's heat index is evaluated at 84.2°F (29°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in South Lebanon, Oregon, with an average temperature varying between 73.4°F (23°C) and 48.9°F (9.4°C). South Lebanon's weather in September involves a mild decrease in the average high-temperature, moving down slightly from August's 81.1°F (27.3°C) to a still moderately hot 73.4°F (23°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in South Lebanon, Oregon, with temperature in the range of an average low of 44.2°F (6.8°C) and an average high of 62.1°F (16.7°C). The average high-temperature drops in October, from September's moderately hot 73.4°F (23°C) to a refreshing 62.1°F (16.7°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cool month in South Lebanon, Oregon, with an average temperature ranging between max 51.4°F (10.8°C) and min 39°F (3.9°C). November brings a decrease in the average high-temperature, shifting from a refreshing 62.1°F (16.7°C) in October to a fresh 51.4°F (10.8°C). Weather in November »

Weather in December

December, the first month of the winter in South Lebanon, is also a frosty month, with an average temperature ranging between max 45.3°F (7.4°C) and min 34.2°F (1.2°C). The lowest temperatures are recorded in December, with averages reaching a high of 45.3°F (7.4°C) and a low of 34.2°F (1.2°C). Weather in December »
Updated: Jul 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the most humid months?

The months with the highest humidity are January through March and December, with an average relative humidity of 86%.

How many days does it rain?

In South Lebanon, during the entire year, the rain falls for 163.3 days and collects up to 29.92" (760mm) of precipitation.

When does it snow in South Lebanon?

Months with snowfall are January through March, November and December.

How many days does it snow?

Throughout the year, there are 5.6 snowfall days, and 4.09" (104mm) of snow is accumulated.

What is the month with the lowest UV index?

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

When does it snow the most?

February is the month with the most snowfall. Snow falls for 2.5 days and accumulates 2.13" (54mm) of snow.

What is the month with the least sunshine in South Lebanon?

With an average of 4.2h of sunshine, February has the least sunshine of the year.

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 PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.

When it does not snow?

April through October are months without snowfall.

When are the longest days?

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

What is the driest month in South Lebanon?

July is the month with the least rainfall. Rain falls for 3.8 days and accumulates 0.24" (6mm) of precipitation.

When is the highest UV index?

With an average maximum UV index of 6, July is the month with the highest UV index.

What part of the year is the hottest?

South Lebanon registers the average highest temperatures during August, with peaks of 81.1°F (27.3°C) and lows of 51.8°F (11°C).

What is the least humid month?

With an average relative humidity of 66%, August is the least humid month.

What month has the most sunshine?

August has the most sunshine of the year, with an average of 11.2h of sunshine.

What month is the coldest?

December, marked by an average high-temperature of 45.3°F (7.4°C) and a low-temperature of 34.2°F (1.2°C), is the coldest month in South Lebanon.

What is the wettest month?

December is the month with the most rainfall. Rain falls for 18 days and accumulates 4.41" (112mm) of precipitation.

What is the month with the shortest days in South Lebanon?

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

Average temperature
South Lebanon, OR

Average temperature - South Lebanon, OR

The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (45.3°F).

The month with the highest average low temperature is August (51.8°F).
The coldest month (with the lowest average low temperature) is December (34.2°F).

Average pressure
South Lebanon, OR

Average pressure - South Lebanon, OR

The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).

Average wind speed
South Lebanon, OR

Average wind speed - South Lebanon, OR

The windiest months (with the highest average wind speed) are January and March (5.1mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).

Average humidity
South Lebanon, OR

Average humidity - South Lebanon, OR

The months with the highest relative humidity are January, February, March and December (86%).
The month with the lowest relative humidity is August (66%).

Average rainfall
South Lebanon, OR

Average rainfall - South Lebanon, OR

The wettest month (with the highest rainfall) is December (4.41").
The driest month (with the least rainfall) is July (0.24").

Average rainfall days
South Lebanon, OR

Average rainfall days - South Lebanon, OR

The month with the highest number of rainy days is March (20.1 days).
The months with the least rainy days are July and August (3.8 days).

Average snowfall
South Lebanon, OR

Average snowfall - South Lebanon, OR

The month with the highest snowfall is February (2.13").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days
South Lebanon, OR

Average snowfall days - South Lebanon, OR

The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight / Average sunshine
South Lebanon, OR

Average daylight / Average sunshine - South Lebanon, OR

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 August (Average sunshine: 11h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).

Average sunshine days
South Lebanon, OR

Average sunshine days - South Lebanon, OR

The month with the most sunshine days is July (25.6 days).
The month with the least sunshine days is March (9.1 days).

Average UV index
South Lebanon, OR

Average UV index - South Lebanon, OR

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

Average visibility
South Lebanon, OR

Average visibility - South Lebanon, OR

The months with the highest visibility are July, August and September (6mi).
The month with the lowest visibility is February (4mi).

South Lebanon, Oregon, USA

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