May weather forecast and climate
Salem, OR

An evening shot of the leafy town of Salem in Oregon, with a clear dusk sky
An evening shot of the leafy town of Salem in Oregon, with a clear dusk sky

What is the temperature in May in Salem?

In May, the average high-temperature is 67.8°F (19.9°C), and the average low-temperature is 41.7°F (5.4°C).

How many days does it rain in May in Salem?

In Salem, Oregon, in May, during 11.9 rainfall days, typically 2.2" (56.4mm) of precipitation is accumulated.
Average temperature in May - Salem, OR
  • Average high temperature in May: 19.9°C

The warmest month (with the highest average high temperature) is August (28°C).
The month with the lowest average high temperature is December (7.9°C).

  • Average low temperature in May: 5.4°C

The month with the highest average low temperature is July (11.7°C).
The coldest month (with the lowest average low temperature) is December (1.1°C).

Average rainfall in May - Salem, OR
  • Average rainfall in May: 56.4mm

The wettest month (with the highest rainfall) is December (174.2mm).
The driest month (with the lowest rainfall) is August (11.2mm).

Average rainfall days in May - Salem, OR
  • Average rainfall days in May: 11.9 days

The month with the highest number of rainy days is December (18.2 days).
The month with the lowest number of rainy days is July (2.9 days).

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

The month with the highest snowfall is February (43.2mm).
Months with the lowest snowfall are March, April, May, June, July, August, September and October (0mm).

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

Months with the highest number of snowfall days are February and December (0.7 days).
Months with the lowest number of snowfall days are March, April, May, June, July, August, September and October (0 days).

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 shortest days is December (Average daylight: 8.8h).

  • Average sunshine in May: 9h

The month with most sunshine is July (Average sunshine: 11h).
The month with least sunshine is December (Average sunshine: 2h).

Average UV index in May - Salem, OR
  • Average UV index in May: 7

The month with the highest UV index is July (UV index 8).
Months with the lowest UV index are January and December (UV index 1).

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