May weather forecast
Salem, OR

An evening shot of the leafy town of Salem in Oregon
An evening shot of the leafy town of Salem in Oregon

Weather in May

The last month of the spring, May, is a comfortable month in Salem, Oregon, with average temperature fluctuating between 66.7°F (19.3°C) and 42.8°F (6°C).

Temperature

In May, the average high-temperature marginally rises, from a mild 58.8°F (14.9°C) in April, to an enjoyable 66.7°F (19.3°C). In May, the average low-temperature is 42.8°F (6°C).

Humidity

In May, the average relative humidity in Salem is 76%.

Rainfall

In Salem, during 13.4 rainfall days, 1.46" (37mm) of precipitation is typically accumulated. Throughout the year, there are 162.5 rainfall days, and 25.08" (637mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

The average length of the day in Salem is 14.9h.

Sunshine

In Salem, the average sunshine is 8.6h.

UV index

In May, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to the UV radiation for the ordinary person.
Note: The average daily UV index of 4 in May transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
[Resources]

FAQ

What is the average humidity in May in Salem?

In Salem, Oregon, the average relative humidity in May is 76%.

How many days does it rain in May in Salem?

In Salem, during May, the rain falls for 13.4 days and regularly aggregates up to 1.46" (37mm) of precipitation.

When it does not snow in Salem?

In Salem, Oregon, snow does not fall in April through October.

How many hours of daylight does Salem have in May?

In Salem, Oregon, the average length of the day in May is 14.9h.

How many hours of sunshine does Salem have in May?

The average sunshine in May is 8.6h.

What is the UV index reading in May in Salem?

In May, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV rays.

Average temperature in May
Salem, OR

Average temperature in May - Salem, OR
  • Average high temperature in May: 19.3°C

The warmest month (with the highest average high temperature) is August (27.8°C).
The month with the lowest average high temperature is December (7.5°C).

  • Average low temperature in May: 6°C

The month with the highest average low temperature is August (12.3°C).
The coldest month (with the lowest average low temperature) is December (1.4°C).

[Resources]

Average pressure in May
Salem, OR

Average pressure in May - Salem, OR
  • Average pressure in May: 1017.2mbar

The month with the highest atmospheric pressure is January (1019.7mbar).
The month with the lowest atmospheric pressure is August (1016.2mbar).

[Resources]

Average wind speed in May
Salem, OR

Average wind speed in May - Salem, OR
  • Average wind speed in May: 7.2km/h

The windiest month (with the highest average wind speed) is March (8.9km/h).
The calmest month (with the lowest average wind speed) is August (6.8km/h).

[Resources]

Average humidity in May
Salem, OR

Average humidity in May - Salem, OR
  • Average humidity in May: 76%

Months with the highest relative humidity are January, February and December (86%).
The month with the lowest relative humidity is August (65%).

[Resources]

Average rainfall in May
Salem, OR

Average rainfall in May - Salem, OR
  • Average rainfall in May: 37mm

The wettest month (with the highest rainfall) is December (100mm).
The driest month (with the least rainfall) is July (7mm).

[Resources]

Average rainfall days in May
Salem, OR

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).

[Resources]

Average snowfall in May
Salem, OR

Average snowfall in May - Salem, OR
  • Average snowfall in May: 0mm

The month with the highest snowfall is February (30mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

[Resources]

Average snowfall days in May
Salem, OR

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

[Resources]

Average daylight in May /
Average sunshine in May
Salem, OR

Average daylight in May / Average sunshine in May - Salem, OR
  • Average daylight in May: 14.9h

The month with the longest days is June (Average daylight: 15.6h).
The month with the shortest days is December (Average daylight: 8.8h).

  • Average sunshine in May: 8.6h

The month with the most sunshine is August (Average sunshine: 11h).
The month with the least sunshine is February (Average sunshine: 4.2h).

[Resources]

Average sunshine days in May
Salem, OR

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).

[Resources]

Average UV index in May
Salem, OR

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

[Resources]

Average cloud cover in May
Salem, OR

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).

[Resources]

Average visibility in May
Salem, OR

Average visibility in May - Salem, OR
  • Average visibility in May: 8km

Months with the highest visibility are July, August and September (9km).
Months with the lowest visibility are January, February, March, April, May, June, October, November and December (8km).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location