Dubuque, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dubuque, a city in Dubuque County, Iowa.
Tonight
64°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms between 10pm and 2am, then showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy. Low around 64, with temperatures rising to around 66 overnight. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
7-day forecast for Dubuque
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 64°F | Chance Showers And Thunderstorms | 5 to 10 mph SE | 82% |
| Saturday | 78°F | Showers And Thunderstorms | 5 mph S | 77% |
| Saturday Night | 61°F | Showers And Thunderstorms | 5 to 10 mph N | 84% |
| Sunday | 68°F | Rain Showers Likely | 10 to 15 mph NE | 56% |
| Sunday Night | 55°F | Chance Rain Showers | 10 to 15 mph NE | 43% |
| Monday | 64°F | Chance Rain Showers | 15 mph NE | 46% |
| Monday Night | 51°F | Chance Rain Showers | 5 to 15 mph NE | 46% |
| Tuesday | 62°F | Chance Rain Showers | 10 mph NE | 38% |
| Tuesday Night | 48°F | Partly Cloudy | 5 to 10 mph NE | 8% |
| Wednesday | 66°F | Mostly Sunny | 5 mph NE | 2% |
| Wednesday Night | 51°F | Partly Cloudy | 0 to 5 mph NE | 3% |
| Thursday | 68°F | Mostly Sunny | 0 to 5 mph NE | 5% |
| Thursday Night | 53°F | Partly Cloudy | 0 mph | 5% |
| Friday | 70°F | Mostly Sunny | 0 to 5 mph NE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Dubuque (42.499, -90.707). Updated through the day.
Growing snapshot for Dubuque
Last spring frost
Apr 19
First fall frost
Oct 21
Growing season
184 days
Hardiness zone
5a
More local growing data for Dubuque: nearby ZIP 52001 weather · frost dates · planting calendar · Iowa frost dates
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Climate data from the nearest NOAA station, Dubuque L&D 11, Ia (2.5 mi from Dubuque). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.