Climate and monthly weather forecastSouth Lebanon, OR
Climate and monthly weather forecast
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
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The months with the highest humidity are January through March and December, with an average relative humidity of 86%.
In South Lebanon, during the entire year, the rain falls for 163.3 days and collects up to 29.92" (760mm) of precipitation.
Months with snowfall are January through March, November and December.
Throughout the year, there are 5.6 snowfall days, and 4.09" (104mm) of snow is accumulated.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
February is the month with the most snowfall. Snow falls for 2.5 days and accumulates 2.13" (54mm) of snow.
With an average of 4.2h of sunshine, February has the least sunshine of the year.
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.
April through October are months without snowfall.
The month with the longest days is June, with an average of 15h and 30min of daylight.
July is the month with the least rainfall. Rain falls for 3.8 days and accumulates 0.24" (6mm) of precipitation.
With an average maximum UV index of 6, July is the month with the highest UV index.
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).
With an average relative humidity of 66%, August is the least humid month.
August has the most sunshine of the year, with an average of 11.2h of sunshine.
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.
December is the month with the most rainfall. Rain falls for 18 days and accumulates 4.41" (112mm) of precipitation.
The month with the shortest days is December, with an average of 8h and 54min of daylight.
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 in January:
30.12"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.04"Hg - Average pressure in April:
30.07"Hg - Average pressure in May:
30.03"Hg - Average pressure in June:
30.03"Hg
- Average pressure in July:
30.03"Hg - Average pressure in August:
30.01"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.11"Hg
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 in January:
5.1mph - Average wind speed in February:
5mph - Average wind speed in March:
5.1mph - Average wind speed in April:
4.7mph - Average wind speed in May:
4.3mph - Average wind speed in June:
4.2mph
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
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 in January:
4.09" - Average rainfall in February:
3.43" - Average rainfall in March:
3.7" - Average rainfall in April:
3.07" - Average rainfall in May:
1.85" - Average rainfall in June:
1.34"
- Average rainfall in July:
0.24" - Average rainfall in August:
0.31" - Average rainfall in September:
1.5" - Average rainfall in October:
2.68" - Average rainfall in November:
3.31" - Average rainfall in December:
4.41"
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 in January:
17.4 days - Average rainfall days in February:
16.9 days - Average rainfall days in March:
20.1 days - Average rainfall days in April:
17.8 days - Average rainfall days in May:
13.3 days - Average rainfall days in June:
11 days
- Average rainfall days in July:
3.8 days - Average rainfall days in August:
3.8 days - Average rainfall days in September:
8.8 days - Average rainfall days in October:
14.4 days - Average rainfall days in November:
18 days - Average rainfall days in December:
18 days
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
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 in January:
1.1 days - Average snowfall days in February:
2.5 days - Average snowfall days in March:
1 days - Average snowfall days in April:
0.2 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.1 days - Average snowfall days in December:
0.7 days
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 in January:
9h and 18min - Average daylight in February:
10h and 30min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 30min - Average daylight in May:
14h and 48min - Average daylight in June:
15h and 30min
- Average daylight in July:
15h and 6min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 36min - Average daylight in December:
8h and 54min
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).
- Average sunshine in January:
4h and 18min - Average sunshine in February:
4h and 12min - Average sunshine in March:
5h and 36min - Average sunshine in April:
7h and 6min - Average sunshine in May:
8h and 30min - Average sunshine in June:
9h and 24min
- Average sunshine in July:
11h and 6min - Average sunshine in August:
11h and 12min - Average sunshine in September:
9h and 24min - Average sunshine in October:
5h and 30min - Average sunshine in November:
4h and 54min - Average sunshine in December:
4h and 18min
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 in January:
12.3 days - Average sunshine days in February:
9.5 days - Average sunshine days in March:
9.1 days - Average sunshine days in April:
10 days - Average sunshine days in May:
15.5 days - Average sunshine days in June:
17 days
- Average sunshine days in July:
25.6 days - Average sunshine days in August:
25.3 days - Average sunshine days in September:
19.3 days - Average sunshine days in October:
15.2 days - Average sunshine days in November:
11.1 days - Average sunshine days in December:
11.6 days
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
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 cloud cover
South Lebanon, OR
The month with the most cloud cover is February (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 20).
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).
