September weather forecast and climate
Sundance, WY

Average temperature in September - Sundance, WY
  • Average high temperature in September: 72.2°F

The warmest month (with the highest average high temperature) is July (84.5°F).
The month with the lowest average high temperature is January (30.8°F).

  • Average low temperature in September: 42.3°F

The month with the highest average low temperature is July (53.9°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).

Average rainfall in September - Sundance, WY
  • Average rainfall in September: 1.3"

The wettest month (with the highest rainfall) is June (3.1").
Driest months (with the lowest rainfall) are January, February and December (0.7").

Average daylight in September - Sundance, WY
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.5h).
The month with shortest days is December (Average daylight: 8.9h).

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