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CheckWeather US›Wisconsin›Fond du Lac

Fond du Lac weather

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Fond du Lac weather alerts and warnings

active National Weather Service watches, warnings and advisories

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Fond du Lac weather in numbers

measured normals and 10 years of recorded weather

Fond du Lac swings 69°F across the year, from 81°F highs in July to 12°F lows in February, and June is usually the wettest month in a year that brings about 30 in of precipitation. Over 10 years of recorded weather it averages 79 days a year at 77°F or above, 19 of them at 86°F or above, 137 frost nights, and rain on 114 days.

Warmest month
July
81°F average high
Coldest month
February
12°F average low
Wettest month
June
30 in a year
Comfortable
3 months
May, August and September
Residents
43,000
share this forecast
Most accurate here
European
94/100 CheckWeather Score
Warm days
79 days
a year at 77°F or above
Frost nights
137 nights
a year below 32°F
Rain days
114 days
a year with 0.04 in or more

Day counts are from the ERA5 reanalysis for Fond du Lac’s grid square, 2016 to 2025, counted the same way for every city so the numbers compare. A reanalysis square is an area, not a weather station, so it is good for counting days and not for a single day’s record.

The weather map: all three models at once

NWS, American, European side by side around Fond du Lac and nearby towns.Live rain radar →
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Fond du Lac hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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Fond du Lac 10-day forecast, out to 14 days

where the models agree, and where they split

Fond du Lac, Wisconsin (WI) is at its warmest in Jul (average highs near 81°F) and coldest in Feb (lows around 12°F), with roughly 30 in of precipitation across the year. Below, compare what NWS, American, European forecast for Fond du Lac right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.

Fond du Lac climate by month

average daytime high and overnight low across a typical year (1991-2020)
Jan
23°
13°
Feb
30°
12°
Mar
43°
26°
Apr
54°
36°
May
67°
46°
Jun
78°
58°
Jul
81°
63°
Aug
78°
61°
Sep
72°
54°
Oct
58°
42°
Nov
43°
30°
Dec
30°
19°

Source: 1991-2020 averages, ERA5 for this place adjusted with NASA POWER.

How the weather around Fond du Lac has changed since 1995

Fond du Lac sits in the same roughly 50 km square of NASA's reanalysis as Oshkosh. That square shows no clear change in temperature between 1995-2004 and 2015-2024. See the full 30-year picture on the Oshkosh page.

Which forecast is most accurate in Fond du Lac?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
94
/100rank #1
96±0.4°F99±0.5 mph8994% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
83
/100rank #2
82±1.8°F95±1.6 mph7687% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United States? Give each 1 to 5 stars.

NWSNational Blend (NBM)
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AmericanNOAA GFS
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EuropeanECMWF
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One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Common questions

What's the weather in Fond du Lac today?
On this page we show what NWS, American, European each forecast for Fond du Lac today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Fond du Lac today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Fond du Lac and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Fond du Lac?
Over the last 30 days, the European model has been the most accurate for Fond du Lac (CheckWeather Score 94/100), ahead of the American at 83. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Fond du Lac?
July is typically the warmest month in Fond du Lac, with average highs around 81°F.
How cold does Fond du Lac get?
The coldest month in Fond du Lac is February, when overnight lows average about 12°F.
How much rain does Fond du Lac get?
Fond du Lac sees roughly 30 in of precipitation a year, with June usually the wettest month.

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