September Weather in Girdwood

Last updated: March 2, 2024

The weather in Girdwood, United States, during September is characterized by an average temperature of 6°C (42°F). Highs can soar to 13°C (56°F), while lows may dip to -4°C (25°F). Typically, the humidity level in Girdwood throughout September hovers around 96%.

-4°C (25°F)

Minimum temperature

6°C (42°F)

Average temperature

13°C (56°F)

Maximum temperature

96%

Humidity

Precipitation and Sunshine hours

In September, Girdwood averages 192 mm (7.5 inches) of rainfall, typically over the course of 19 rainy days. The month enjoys an average of 12 hours 46 minutes of daylight, with the sun shining for approximately 6 hours 7 minutes each day. Additionally, there is a 15% probability of sunny days during this period.

192 mm (7.5 inches)

Precipitation

19 rainy days

Rainy days

6 hours 7 minutes

Sunshine hours

15%

Chance of sun

UV Index

In September, the UV Index in Girdwood reaches a maximum of 4, indicating a level of Moderate exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 30 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
UVI 1 1 1 2 2 3 4 4 3 3 2 1 1
Exposure Low Moderate Low
Time to burn 45 min 30 min 45 min

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