Port Alsworth
Alaska, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Port Alsworth, AK

The first month of the autumn, September, is still a mild month in Port Alsworth, Alaska, with average temperature varying between 38.7°F (3.7°C) and 56.1°F (13.4°C).

Temperature

In September, the average high-temperature marginally drops, from an enjoyable 64.9°F (18.3°C) in August, to a moderate 56.1°F (13.4°C). In September, the average low-temperature is 38.7°F (3.7°C).

Rainfall

In September, in Port Alsworth, the rain falls for 10 days. Throughout September, 2.4" (59.7mm) of precipitation is accumulated. In Port Alsworth, during the entire year, the rain falls for 96 days and collects up to 14.9" (378.8mm) of precipitation.

Snowfall

Months with snowfall in Port Alsworth are January through May, September through December.

Daylight

In Port Alsworth, the average length of the day in September is 12.8h.

What is the temperature in September in Port Alsworth?

The average high-temperature, in September, in Port Alsworth, is 56.1°F (13.4°C), while the average low-temperature is 38.7°F (3.7°C).

How much does it rain in Port Alsworth in September?

In Port Alsworth, Alaska, during September, the rain falls for 10 days and regularly aggregates up to 2.4" (59.7mm) of precipitation.

When does it start to snow in Port Alsworth?

September is the first month it typically snows in Port Alsworth, Alaska. Throughout September, Port Alsworth receives 0.1" (2.5mm) of snow.

What is the average length of the day in September in Port Alsworth?

The average length of the day in September in Port Alsworth, Alaska, is 12.8h.
Average temperature in September - Port Alsworth, AK
  • Average high temperature in September: 56.1°F

The warmest month (with the highest average high temperature) is July (67.4°F).
The month with the lowest average high temperature is January (22.8°F).

  • Average low temperature in September: 38.7°F

The month with the highest average low temperature is July (46.8°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).

Average rainfall in September - Port Alsworth, AK
  • Average rainfall in September: 2.4"

Wettest months (with the highest rainfall) are August and September (2.4").
The driest month (with the lowest rainfall) is May (0.5").

Average rainfall days in September - Port Alsworth, AK
  • Average rainfall days in September: 10 days

The month with the highest number of rainy days is August (11 days).
The month with the lowest number of rainy days is May (5 days).

Average snowfall in September - Port Alsworth, AK
  • Average snowfall in September: 0.1"

The month with the highest snowfall is December (17.6").
Months with the lowest snowfall are June, July and August (0").

Average daylight in September - Port Alsworth, AK
  • Average daylight in September: 12.8h

The month with the longest days is June (Average daylight: 18.8h).
The month with shortest days is December (Average daylight: 6h).