September weather forecast and climate
South Bend, WA

Weather in September

September, the first month of the autumn, in South Bend, is also an enjoyable month, with temperature in the range of an average low of 50.9°F (10.5°C) and an average high of 65.3°F (18.5°C).

Temperature

In September, the average high-temperature is practically the same as in August - an enjoyable 65.3°F (18.5°C). In South Bend, Washington, in September, the average low-temperature is 50.9°F (10.5°C).

Humidity

In South Bend, the average relative humidity in September is 83%.

Rainfall

In September, the rain falls for 12.6 days. Throughout September, 2.09" (53mm) of precipitation is accumulated. Throughout the year, in South Bend, there are 194.8 rainfall days, and 44.65" (1134mm) of precipitation is accumulated.

Snowfall

In South Bend, Washington, snow does not fall in April through October and December.

Daylight

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

Sunshine

The average sunshine in South Bend, Washington, is 8.4h.

UV index

The average daily maximum UV index in South Bend is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 4 in September transform into the following instructions:
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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the average humidity in September in South Bend?

The average relative humidity in September in South Bend is 83%.

How many days does it rain in September in South Bend?

In South Bend, Washington, during September, the rain falls for 12.6 days and regularly aggregates up to 2.09" (53mm) of precipitation.

When it does not snow in South Bend?

In South Bend snow does not fall in April through October and December.

What is the average length of the day in September in South Bend?

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

How long on average sun shines in September in South Bend?

In South Bend, Washington, the average sunshine in September is 8.4h.

What is the UV index reading in September in South Bend?

The average daily maximum UV index in September in South Bend, Washington, is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to the UV radiation.

Average temperature in September
South Bend, WA

Average temperature in September - South Bend, WA
  • Average high temperature in September: 65.3°F

The warmest month (with the highest average high temperature) is August (69.3°F).
The month with the lowest average high temperature is December (44.4°F).

  • Average low temperature in September: 50.9°F

The month with the highest average low temperature is August (52.3°F).
The coldest month (with the lowest average low temperature) is February (37.4°F).

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Average pressure in September
South Bend, WA

Average pressure in September - South Bend, WA
  • Average pressure in September: 30.02"

The month with the highest atmospheric pressure is July (30.08").
The month with the lowest atmospheric pressure is March (30.01").

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Average wind speed in September
South Bend, WA

Average wind speed in September - South Bend, WA
  • Average wind speed in September: 5.3mph

The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in September
South Bend, WA

Average humidity in September - South Bend, WA
  • Average humidity in September: 83%

The month with the highest relative humidity is November (87%).
The month with the lowest relative humidity is July (80%).

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Average rainfall in September
South Bend, WA

Average rainfall in September - South Bend, WA
  • Average rainfall in September: 2.09"

The wettest month (with the highest rainfall) is December (7.05").
The driest month (with the least rainfall) is July (0.51").

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Average rainfall days in September
South Bend, WA

Average rainfall days in September - South Bend, WA
  • Average rainfall days in September: 12.6 days

The month with the highest number of rainy days is March (21.6 days).
The month with the least rainy days is August (7.5 days).

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Average snowfall in September
South Bend, WA

Average snowfall in September - South Bend, WA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.42").
Months with the least snowfall are April, May, June, July, August, September, October and December (0").

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Average snowfall days in September
South Bend, WA

Average snowfall days in September - South Bend, WA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2.1 days).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
South Bend, WA

Average daylight in September / Average sunshine in September - South Bend, WA
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.8h).
The month with the shortest days is December (Average daylight: 8.6h).

  • Average sunshine in September: 8.4h

The month with the most sunshine is July (Average sunshine: 9.8h).
The month with the least sunshine is January (Average sunshine: 3.5h).

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Average sunshine days in September
South Bend, WA

Average sunshine days in September - South Bend, WA
  • Average sunshine days in September: 14.6 days

The month with the most sunshine days is August (19.2 days).
The month with the least sunshine days is February (7.2 days).

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Average UV index in September
South Bend, WA

Average UV index in September - South Bend, WA
  • Average UV index in September: 4

The month with the highest UV index is July (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
South Bend, WA

Average cloud cover in September - South Bend, WA
  • Average cloud cover in September: 41

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 38).

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Average visibility in September
South Bend, WA

Average visibility in September - South Bend, WA
  • Average visibility in September: 5mi

Months with the highest visibility are March and April (6mi).
The month with the lowest visibility is August (4mi).

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