May weather forecastSouth Lebanon, OR

May

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).

Temperature

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). During May, South Lebanon's temperature records a considerable difference from its daily highs to an average low of 41.5°F (5.3°C).

Humidity

In May, the average relative humidity is 78%.

Rainfall

In South Lebanon, in May, during 13.3 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. Throughout the year, there are 163.3 rainfall days, and 29.92" (760mm) of precipitation is accumulated.

Snowfall

In South Lebanon, snow does not fall in April through October.

Daylight

The average length of the day in May is 14h and 50min.
On the first day of the month, sunrise is at 6:00 am and sunset at 8:16 pm. On the last day of May, sunrise is at 5:29 am and sunset at 8:49 pm PDT.

Sunshine

The average sunshine in May is 8.5h.

UV index

In South Lebanon, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: A daily high UV index of 4 in May leads to these guidelines:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.

Updated: Jul 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

South Lebanon in May has an average high-temperature of 65.3°F (18.5°C) and an average low-temperature of 41.5°F (5.3°C).

The average relative humidity in May is 78%.

In South Lebanon, in May, it is raining for 13.3 days, with typically 1.85" (47mm) of accumulated precipitation.

In South Lebanon, snow does not fall in April through October.

In South Lebanon, the average day length in May is 14h and 50min.

On the first day of May, sunrise is at 6:00 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 5:29 am and sunset at 8:49 pm PDT.

In South Lebanon, the average sunshine duration in May is 8.5h.

In May, the average daily maximum UV index in South Lebanon is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A May J J A S O N D

Apr

May

Jun

Average high temperature

57.6°F

65.3°F

70.9°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

5.3mph

4.8mph

4.7mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

17.8

13.3

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

15.5

Average UV index

Average cloud cover

Average visibility

Average temperature in May
South Lebanon, OR

Average high temperature in May: 65.3°F

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).

Average low temperature in May: 41.5°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 in May
South Lebanon, OR

Average pressure in May: 30.03"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 in May
South Lebanon, OR

Average wind speed in May: 4.3mph

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 in May
South Lebanon, OR

Average humidity in May: 78%

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 in May
South Lebanon, OR

Average rainfall in May: 1.85"

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 in May
South Lebanon, OR

Average rainfall days in May: 13.3 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 in May
South Lebanon, OR

Average snowfall in May: 0"

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 in May
South Lebanon, OR

Average snowfall days in May: 0 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 in May /
Average sunshine in May
South Lebanon, OR

Average daylight in May: 14h and 48min

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 May: 8h and 30min

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 in May
South Lebanon, OR

Average sunshine days in May: 15.5 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 in May
South Lebanon, OR

Average UV index in May: 4

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).