Fond du Lac (WI) Temperature by Month

Fond du Lac, Wisconsin, United States of America has an average annual maximum temperature of 13°C (55°F), ranging from -3°C (27°F) in January to 27°C (81°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

In Fond du Lac, temperatures differ significantly between summer and winter months. Nighttime lows reflect this range, dropping from 17°C (63°F) in July to -12°C (10°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Fond du Lac by month:

The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM. July, the city's warmest month, gets 330 hours of sunshine.

The chart below shows the average temperature throughout the year:

Fond du Lac's average annual maximum temperature is 13°C (55°F). To put that in context, here's how it compares to a few well-known destinations:

Seville, Spain averages 23°C (73°F) a year, one of the warmer cities in Western Europe, with long hot summers.

Glasgow, Scotland averages 13°C (55°F) a year, mild but often grey, with cold winters and rarely hot summers.

Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.

Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Fond du Lac this rarely lasts long on the ground.

For more on Fond du Lac's weather, including monthly rainfall, sunshine hours, and humidity, visit our Fond du Lac climate page.