September weather forecast and climate
Saint Paul, AK

Weather in September

The first month of the autumn, September, is also a frosty month in Saint Paul, Alaska, with average temperature fluctuating between 48.6°F (9.2°C) and 46.4°F (8°C).

Temperature

In September, the average high-temperature is relatively the same as in August - a frosty 48.6°F (9.2°C). The average low-temperature, in September, is 46.4°F (8°C).

Humidity

The average relative humidity in September is 86%.

Rainfall

In Saint Paul, during 17.9 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. Throughout the year, there are 153.3 rainfall days, and 23.03" (585mm) of precipitation is accumulated.

Snowfall

In Saint Paul snow does not fall in June through September.

Daylight

The average length of the day in Saint Paul is 12.7h.

Sunshine

The average sunshine is 4.4h.

UV index

In September, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal health hazard from the exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 2 in September interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 temperature in September in Saint Paul?

The average high-temperature, in September, in Saint Paul, is 48.6°F (9.2°C), while the average low-temperature is 46.4°F (8°C).

What is the average humidity in September in Saint Paul?

In September, the average relative humidity in Saint Paul, Alaska, is 86%.

How much does it rain in Saint Paul in September?

In Saint Paul, Alaska, during September, the rain falls for 17.9 days and regularly aggregates up to 2.17" (55mm) of precipitation.

Does it snow in Saint Paul in September?

In Saint Paul, Alaska, in September, it doesn't snow. In October, it regularly snows.

When it does not snow in Saint Paul?

June through September are months without snowfall.

How many hours of daylight does Saint Paul have in September?

The average length of the day in September in Saint Paul, Alaska, is 12.7h.

How long on average sun shines in September in Saint Paul?

The average sunshine in September in Saint Paul is 4.4h.

How high is the UV index in September in Saint Paul?

In September, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low health risk from the exposure to the Sun's UV radiation.

Average temperature in September
Saint Paul, AK

Average temperature in September - Saint Paul, AK
  • Average high temperature in September: 48.6°F

The warmest month (with the highest average high temperature) is August (50.7°F).
The month with the lowest average high temperature is March (28.9°F).

  • Average low temperature in September: 46.4°F

The month with the highest average low temperature is August (48.7°F).
The coldest month (with the lowest average low temperature) is March (24.3°F).

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Average pressure in September
Saint Paul, AK

Average pressure in September - Saint Paul, AK
  • Average pressure in September: 29.75"

The month with the highest atmospheric pressure is July (29.92").
The month with the lowest atmospheric pressure is December (29.52").

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Average wind speed in September
Saint Paul, AK

Average wind speed in September - Saint Paul, AK
  • Average wind speed in September: 17mph

The windiest month (with the highest average wind speed) is November (21.8mph).
The calmest month (with the lowest average wind speed) is July (12.4mph).

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Average humidity in September
Saint Paul, AK

Average humidity in September - Saint Paul, AK
  • Average humidity in September: 86%

The month with the highest relative humidity is July (94%).
Months with the lowest relative humidity are November and December (77%).

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Average rainfall in September
Saint Paul, AK

Average rainfall in September - Saint Paul, AK
  • Average rainfall in September: 2.17"

The wettest month (with the highest rainfall) is October (2.87").
The driest month (with the least rainfall) is June (1.02").

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Average rainfall days in September
Saint Paul, AK

Average rainfall days in September - Saint Paul, AK
  • Average rainfall days in September: 17.9 days

The month with the highest number of rainy days is October (20.7 days).
The month with the least rainy days is January (5.8 days).

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Average snowfall in September
Saint Paul, AK

Average snowfall in September - Saint Paul, AK
  • Average snowfall in September: 0"

The month with the highest snowfall is December (3.74").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Saint Paul, AK

Average snowfall days in September - Saint Paul, AK
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (13.9 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Saint Paul, AK

Average daylight in September / Average sunshine in September - Saint Paul, AK
  • Average daylight in September: 12.7h

The month with the longest days is June (Average daylight: 17.8h).
The month with the shortest days is December (Average daylight: 6.8h).

  • Average sunshine in September: 4.4h

The month with the most sunshine is June (Average sunshine: 5.6h).
The month with the least sunshine is December (Average sunshine: 1.7h).

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Average sunshine days in September
Saint Paul, AK

Average sunshine days in September - Saint Paul, AK
  • Average sunshine days in September: 8.6 days

The month with the most sunshine days is May (12.3 days).
The month with the least sunshine days is December (3.4 days).

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Average UV index in September
Saint Paul, AK

Average UV index in September - Saint Paul, AK
  • Average UV index in September: 2

Months with the highest UV index are July and August (UV index 3).
Months with the lowest UV index are March, April, May, November and December (UV index 1).

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Average cloud cover in September
Saint Paul, AK

Average cloud cover in September - Saint Paul, AK
  • Average cloud cover in September: 70

The month with the most cloud cover is July (Cloud cover 78).
The month with the least cloud cover is June (Cloud cover 68).

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Average visibility in September
Saint Paul, AK

Average visibility in September - Saint Paul, AK
  • Average visibility in September: 6mi

Months with the highest visibility are April, May, June, July, August, September and October (6mi).
Months with the lowest visibility are January, February, March, November and December (5mi).

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