Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
Salem observes a slight ascent in average high-temperatures during May, adjusting from a mild 58.8°F (14.9°C) in April to an enjoyable 66.7°F (19.3°C). A sharp contrast between day and night is prevalent in May with an average nighttime temperature of 42.8°F (6°C).Humidity
The average relative humidity in May is 76%.Rainfall
In May, in Salem, the rain falls for 13.4 days. Throughout May, 1.46" (37mm) of precipitation is accumulated. Throughout the year, there are 162.5 rainfall days, and 25.08" (637mm) of precipitation is accumulated.Snowfall
In Salem, snow does not fall in April through October.Daylight
In Salem, the average length of the day in May is 14h and 52min.On the first day of May, sunrise is at 6:00 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 5:28 am and sunset at 8:51 pm PDT.
Sunshine
The average sunshine in May is 8.6h.UV index
In Salem, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index, 4 in May, converts into the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May?
How much does it rain in May?
When it does not snow?
How many hours of daylight does Salem have in May?
When are sunrise and sunset in May in Salem?
How many hours of sunshine does Salem have in May?
What is the UV index reading in May?
Average temperature in May
Salem, OR
- Average high temperature in May: 66.7°F
The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (45.5°F).
- Average low temperature in May: 42.8°F
The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is December (34.5°F).
Average pressure in May
Salem, OR
- Average pressure in May: 30.04"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in May
Salem, OR
- Average wind speed in May: 4.5mph
The windiest months (with the highest average wind speed) are January, March and November (5.5mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in May
Salem, OR
- Average humidity in May: 76%
The months with the highest relative humidity are January, February and December (86%).
The month with the lowest relative humidity is August (65%).
Average rainfall in May
Salem, OR
- Average rainfall in May: 1.46"
The wettest month (with the highest rainfall) is December (3.94").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in May
Salem, OR
- Average rainfall days in May: 13.4 days
The month with the highest number of rainy days is March (19.6 days).
The month with the least rainy days is July (3.9 days).
Average snowfall in May
Salem, OR
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.18").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Salem, OR
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Salem, OR
- Average daylight in May: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in May
Salem, OR
- Average sunshine days in May: 16.3 days
The month with the most sunshine days is July (26.3 days).
The month with the least sunshine days is March (8.8 days).
Average UV index in May
Salem, 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
Salem, OR
- Average cloud cover in May: 48
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in May
Salem, OR
- Average visibility in May: 5mi
The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, May, June, October, November and December (5mi).
Salem, Oregon, USA
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