Dubuque
Iowa, USA
Long term weather forecast
Long term weather forecast

September weather forecast and Climate
Dubuque, IA

  • Average high temperature in September: 72°F

Warmest month (with highest average high temperature) is July (82°F).
Month with lowest average high temperature is January (25°F).

  • Average low temperature in September: 51°F

Month with highest average low temperature is July (62°F).
Coldest month (with lowest average low temperature) is January (9°F).

  • Average rainfall in September: 4.1"

Wettest month (with highest rainfall) is August (4.6").
Driest months (with lowest rainfall) are January and February (1.3").

  • Average rainfall days in September: 9 days

Month with highest number of rainy days is April (12 days).
Month with lowest number of rainy days is February (8 days).

  • Average daylight in September: 12h

Months with longest days are May, June and July (Average daylight: 15).
Months with shortest days are January and December (Average daylight: 9).

  • Average sunshine in September: 8h

Month with most sunshine is June (Average sunshine: 11).
Month with least sunshine is December (Average sunshine: 4).

  • Average UV index in September: 6

Month with highest UV index is July (UV index 9).
Months with lowest UV index are January and December (UV index 1).

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