The best times to visit Dubuque for ideal weather are

May 7th to September 30th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other Dubuque Travel Info

Weather in Dubuque


Average temperatures in Dubuque vary an incredible amount. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 26th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Dubuque, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally mid July where highs are regularly around 84.4°F (29.1°C) with temperatures rarely dropping below 62.1°F (16.7°C) at night.

Dubuque Temperatures (Fahrenheit)


Dubuque Temperatures (Celsius)


“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Dubuque Perceived Temperature (F)


Dubuque Perceived Temperature (C)



Average Dubuque Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 27.9 17.6 8.1
Feb 28.9 19.1 9.7
Mar 47.1 35.5 25
Apr 61.2 47.5 35.4
May 73 59.8 47.3
Jun 80.6 68.9 57.6
Jul 83.4 71.8 60.5
Aug 81.6 70 59.1
Sep 76 62.4 50.5
Oct 63 50.4 39.5
Nov 48.6 37.2 27.2
Dec 32.9 24.1 15.2

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan -2.3 -8 -13.3
Feb -1.7 -7.2 -12.4
Mar 8.4 1.9 -3.9
Apr 16.2 8.6 1.9
May 22.8 15.4 8.5
Jun 27 20.5 14.2
Jul 28.6 22.1 15.8
Aug 27.6 21.1 15.1
Sep 24.4 16.9 10.3
Oct 17.2 10.2 4.2
Nov 9.2 2.9 -2.7
Dec 0.5 -4.4 -9.3



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Dubuque are November, January, and then October. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early to mid March. For example, on the week of March 12th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late May with an average of 3 days of significant precipitation the week of May 21st.

When can you find snow in Dubuque? Weather stations report large amounts of snow likely to be deepest around December, especially close to late December. The best time to ski (if at all) in Dubuque is often around around December 17th when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Dubuque.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Dubuque (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 14% 5 1.4
Feb 20% 6.2 2.3
Mar 18% 4.6 2.2
Apr 26% 2.3 5.3
May 24% 0 4.7
Jun 31% 0 5.6
Jul 22% 0 6.8
Aug 20% 0 4.1
Sep 19% 0 2.8
Oct 18% 0 3
Nov 13% 2.5 2.1
Dec 20% 6.3 2.6

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 14 12.7 3.6
Feb 20 15.7 5.8
Mar 18 11.7 5.6
Apr 26 5.8 13.5
May 24 0 11.9
Jun 31 0 14.2
Jul 22 0 17.3
Aug 20 0 10.4
Sep 19 0 7.1
Oct 18 0 7.6
Nov 13 6.4 5.3
Dec 20 16 6.6


Humidity and Wind

Dubuque has some very humid months, with other comfortably humid months. The least humid month is April (55.2% relative humidity), and the most humid month is December (75.9%).

Wind in Dubuque is usually moderate. The windiest month is April, followed by January and November. April’s average wind speed of around 10.3 knots (11.9 MPH or 19.1 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early to mid April where average top sustained speeds reach 18.3 knots, which is considered a fresh breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Dubuque.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 9.7 Gentle breeze 16.9 Significant breeze
Feb 9.5 Gentle breeze 16.3 Significant breeze
Mar 9.2 Gentle breeze 16.1 Significant breeze
Apr 10.3 Gentle breeze 17.9 Strong breeze
May 9 Gentle breeze 16.4 Significant breeze
Jun 7.3 Gentle breeze 15 Significant breeze
Jul 6.1 Light breeze 12.9 Significant breeze
Aug 5.8 Light breeze 12.3 Significant breeze
Sep 6.7 Light breeze 13.1 Significant breeze
Oct 8.2 Gentle breeze 15 Significant breeze
Nov 9.6 Gentle breeze 16.2 Significant breeze
Dec 9.1 Gentle breeze 15.7 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 69.1%
Feb 67.7%
Mar 62.4%
Apr 55.2%
May 57.6%
Jun 65%
Jul 67%
Aug 70%
Sep 66.5%
Oct 61.8%
Nov 64.9%
Dec 75.9%


Is it Safe to Travel to Dubuque?

Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 23, 2019.


The Busiest and Least Crowded Months

The busiest month for tourism in Dubuque, IA, US is March, followed by July and October. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Dubuque in December. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 63.1 in December means 63.1% of the tourists vs. March.



Overall Dubuque Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 77.4°F (25.2°C) and 32.3°F (0.2°C) with far warmer temperatures in the later months. Rain is somewhat common with 6 to 8 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are comfortable. These months see the most precipitation with 6 to 9 days of precipitation per month. June – August is the busiest season for tourism in Dubuque, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 79.2°F (26.2°C) and 40.5°F (4.7°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 4 to 6 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.

Winter (December through February)

Weather is far too cold this time of year in Dubuque to be enjoyable for warm weather travelers. The average high during this season is between 33.5°F (0.8°C) and 26.3°F (-3.2°C). On average, it rains or snows a fair amount: 4 to 6 times per month. These times of year are the slowest with tourists.


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