May weather forecast
South Lebanon, OR

Weather in May

The last month of the spring, May, is an enjoyable month in South Lebanon, Oregon, with average temperature varying between 65.3°F (18.5°C) and 41.5°F (5.3°C).

Temperature

In South Lebanon, the average high-temperature slightly increases, from a mild 57.6°F (14.2°C) in April, to a comfortable 65.3°F (18.5°C). In South Lebanon, in May, the average low-temperature is 41.5°F (5.3°C).

Humidity

In South Lebanon, the average relative humidity in May is 78%.

Rainfall

In May, in South Lebanon, the rain falls for 13.3 days. Throughout May, 1.85" (47mm) of precipitation is accumulated. In South Lebanon, during the entire year, the rain falls for 163.3 days and collects up to 29.92" (760mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In South Lebanon, the average length of the day in May is 14.8h.

Sunshine

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

UV index

In May, the average daily maximum UV index in South Lebanon is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to the UV radiation for the ordinary person.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the average humidity in May in South Lebanon?

In May, the average relative humidity in South Lebanon, Oregon, is 78%.

How many days does it rain in May in South Lebanon?

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

When it does not snow in South Lebanon?

April through October are months without snowfall in South Lebanon.

How many hours of daylight does South Lebanon have in May?

In South Lebanon, Oregon, the average length of the day in May is 14.8h.

How many hours of sunshine does South Lebanon have in May?

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

How high is the UV index in May in South Lebanon?

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 risk from unsafe exposure to the Sun's UV rays.

Average temperature in May
South Lebanon, OR

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).

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Average pressure in May
South Lebanon, OR

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

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

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Average wind speed in May
South Lebanon, OR

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).

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Average humidity in May
South Lebanon, OR

Average humidity in May - South Lebanon, OR
  • Average humidity in May: 78%

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

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Average rainfall in May
South Lebanon, OR

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").

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Average rainfall days in May
South Lebanon, OR

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).
Months with the least rainy days are July and August (3.8 days).

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Average snowfall in May
South Lebanon, OR

Average snowfall in May - South Lebanon, OR
  • Average snowfall in May: 0"

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

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Average snowfall days in May
South Lebanon, OR

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).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in May /
Average sunshine in May
South Lebanon, OR

Average daylight in May / Average sunshine in May - South Lebanon, OR
  • Average daylight in May: 14.8h

The month with the longest days is June (Average daylight: 15.5h).
The month with the shortest days is December (Average daylight: 8.9h).

  • Average sunshine in May: 8.5h

The month with the most sunshine is August (Average sunshine: 11.2h).
The month with the least sunshine is February (Average sunshine: 4.2h).

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Average sunshine days in May
South Lebanon, OR

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).

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Average UV index in May
South Lebanon, OR

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).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in May
South Lebanon, OR

Average cloud cover in May - South Lebanon, OR
  • Average cloud cover in May: 48

The month with the most cloud cover is February (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 20).

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Average visibility in May
South Lebanon, OR

Average visibility in May - South Lebanon, OR
  • Average visibility in May: 5mi

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

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