Summer temperatures · Iowa
How hot does Dubuque get in summer?
Dubuque right now
35°FClear skies
- Today41°F / 33°FClear skies
- Tomorrow46°F / 30°FClear skies
- Monday49°F / 31°FClear skies
Cold enough to notice.
Live from OpenWeatherMap. Alerts from the National Weather Service.
In a typical summer, June to August, Dubuque averages highs around 80°F and lows around 60°F.
About 6 days a year reach 90°F or hotter, and 100°F doesn’t show up in a typical year. About 65 days a year get to 80°F or warmer. That makes it the 33rd coolest summer of the 129 US cities we track.
Last updated
The hottest high in the forecast for the next 48 hours is about 46°F.
Dubuque averages about 6 days a year at 90°F or hotter, so a hot day up on the Mississippi bluffs is rare enough to be worth talking about.
Live 48-hour forecast from OpenWeatherMap, refreshed about every half hour. Alerts from the National Weather Service.
Summer at a glance
| Average summer high | 80°F |
|---|---|
| Average summer low | 60°F |
| Days a year at 80°F or warmer | 65 |
| Days a year at 90°F or hotter | 6 |
| Days a year at 100°F or hotter | none |
| Average winter high, for comparison | 30°F |
Summer here is June to August. Counts are averages a year.
Cities with about the same summer
- Lansing, Michigan: highs around 81°F, lows around 59°F
- Billings, Montana: highs around 83°F, lows around 56°F
- San Diego, California: highs around 75°F, lows around 65°F
More about the weather here
Source: NOAA U.S. Climate Normals, 1991 to 2020, station USW00094908.