Salem
Oregon, USA
Long-term weather forecast
Long-term weather forecast

September 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
September, the first month of the autumn, in Salem, is also a moderately hot month, with temperature in the range of an average low of 48.4°F (9.1°C) and an average high of 76.8°F (24.9°C).

Temperature

In September, the average high-temperature slightly decreases, from a warm 82.4°F (28°C) in August, to a still moderately hot 76.8°F (24.9°C). In September, in Salem, Oregon, the average low-temperature is 48.4°F (9.1°C).

Rainfall

In September, the rain falls for 6.1 days. Throughout September, 1.3" (32.5mm) of precipitation is accumulated. Throughout the year, in Salem, there are 144.3 rainfall days, and 39.6" (1007.1mm) of precipitation is accumulated.

Snowfall

Throughout the year, 3.5" (88.8mm) of snow is accumulated.

Daylight

The average length of the day in September is 12.5h.

Sunshine

The average sunshine in Salem is 8h.

UV index

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against sun damage is advised. 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.

What is the temperature in September in Salem?

The average high-temperature, in September, is 76.8°F (24.9°C), while the average low-temperature is 48.4°F (9.1°C).

How much does it rain in Salem in September?

In September, the rain falls for 6.1 days. Throughout September, 1.3" (32.5mm) of precipitation is accumulated.

How many hours of daylight does Salem have in September?

In Salem, the average length of the day in September is 12.5h.

How many hours of sunshine does Salem have in September?

The average sunshine in September in Salem, Oregon, is 8h.

What is the UV index intensity in September in Salem?

The average daily maximum UV index in September in Salem is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to the UV radiation.
Average temperature in September - Salem, OR
  • Average high temperature in September: 24.9°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 September: 9.1°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 September - Salem, OR
  • Average rainfall in September: 32.5mm

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 September - Salem, OR
  • Average rainfall days in September: 6.1 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 September - Salem, OR
  • Average snowfall in September: 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 September - Salem, OR
  • Average snowfall days in September: 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 September / Average sunshine in September - Salem, OR
  • Average daylight in September: 12.5h

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 September: 8h

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

Average UV index in September - Salem, OR
  • Average UV index in September: 5

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).