Dubuque weather in September 2026
Expect daytime maximum temperatures of 23°C in Dubuque, Iowa in September based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 105 mm of rainfall in the month.
- 23°C max day temperature
23 - 8 hours of sunshine per day
- 9 days with some rainfall
9 - 11°C min night temperature
11 - 12 hours of daylight per day
12 - No heat & humidity
0 - 105 mm of monthly rainfall
105 - 6 (High) UV index
6
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Recommended for Iowa
The September weather guide for Iowa (Dubuque) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
How hot is it in Dubuque in September?
Daytime temperatures usually reach 24°C in Dubuque in September, falling to 12°C at night.
How sunny is it in Dubuque in September?
There are normally 8 hours of bright sunshine each day in Dubuque in September - that's 64% of daylight hours.
Does it rain in Dubuque in September?
There are usually 9 days with some rain in Dubuque in September and the average monthly rainfall is 91mm.
Dubuque September sunrise & sunset times
Browse the sunrise and sunset times for Dubuque in September 2026. Select a month to view Dubuque sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Tuesday, 1st September 2026 | 05:28 | 18:37 |
| Tuesday, 15th September 2026 | 05:43 | 18:12 |
| Wednesday, 30th September 2026 | 05:59 | 17:46 |
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