May weather forecastLebanon, OR
May
Weather in May
May carries with it significantly warmer weather in Lebanon. It witnesses a dramatic reduction in rainfall from the preceding months, experiencing a substantial dip to 1.85" (47mm). The increasing temperature also makes itself evident, as it rises above the 60°F (15.6°C) mark for the average high. Accompanied by increased daylight hours, this weather encourages outdoor activities and marks the start of summer. Hence, residents of Lebanon, Oregon can look forward to more pleasant and warm days in May.Temperature
In Lebanon, the average high-temperature in May slightly rises, from a mild 57.6°F (14.2°C) in April, to a comfortable 65.3°F (18.5°C). Lebanon reports a significant contrast between daytime and nighttime temperatures, with an average low of 41.5°F (5.3°C) in May.Humidity
The average relative humidity in May is 78%.Rainfall
In Lebanon, during May, the rain falls for 13.3 days and regularly aggregates up to 1.85" (47mm) of precipitation. Throughout the year, there are 163.3 rainfall days, and 29.92" (760mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In May, the average length of the day 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.
Sunshine
In Lebanon, the average sunshine in May is 8.5h.UV index
In Lebanon, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 4 during May translates into these guidelines:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
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
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
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
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
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
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
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
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
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
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
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).
Average cloud cover in May
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).
Average visibility in May
Lebanon, OR
- Average visibility in May: 5mi
The months with the highest visibility are July, August and September (6mi).
The month with the lowest visibility is February (4mi).
