Fond du Lac, WI climate
Fond du Lac has cold, snowy winters and pleasant summers. A typical July afternoon reaches 82°, a January night drops to 10°, and about 38 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Fond du Lac feels like
Winter
Spring
Summer
Fall
Fond du Lac weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 26° | 10° | 1.2" | 10.8" | 8 | 23 | 7° – 31° |
| February | 30° | 13° | 1.1" | 9.9" | 7 | 22 | 10° – 32° |
| March | 42° | 23° | 1.8" | 5.7" | 8 | 10 | 25° – 47° |
| April | 55° | 34° | 3.2" | 2.4" | 10 | 1 | 35° – 51° |
| May | 68° | 46° | 3.6" | 0 | 11 | 0 | 50° – 63° |
| June | 77° | 56° | 4.5" | 0 | 10 | 0 | 63° – 71° |
| July | 82° | 60° | 3.9" | 0 | 10 | 0 | 66° – 77° |
| August | 79° | 59° | 3.6" | 0 | 9 | 0 | 64° – 74° |
| September | 72° | 51° | 3.1" | 0 | 9 | 0 | 55° – 66° |
| October | 59° | 39° | 2.8" | 0.4" | 10 | 0 | 44° – 55° |
| November | 44° | 28° | 2.0" | 1.7" | 8 | 3 | 27° – 45° |
| December | 32° | 17° | 1.4" | 7.1" | 7 | 15 | 12° – 35° |
| Year | 55° | 36° | 32.2" | 38.0" | 109 | 75 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Fond du Lac
Fond du Lac gets 32 inches of rain and melted snow a year. June is the wettest month and February the driest. Rain or snow falls on about 109 days a year. Snow covers the ground about 75 days of the year.
About 162 frost-free days a year
In half of years the last 32° night comes by May 1 and the first one by October 12. That leaves about 162 frost-free days for gardens, shorter than 69% of U.S. towns.
Heating and cooling a home in Fond du Lac
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Fond du Lac, 94% of that work is heating and 6% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
Fond du Lac and its neighbors
Fond du Lac borders 5 towns with climate data. January nights across them vary by 0.3°. Empire has the coldest January nights (10°) and North Fond du Lac the hottest July afternoons (82°). Fond du Lac’s January low is 10° and its July high 82°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Fond du Lac compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Fond du Lac averaged 1.2° warmer than the 1900s. The biggest change is in December (+2.9°). The shift is smaller than in 53% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Fond du Lac’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. January swings the most: between 1991 and 2020 its average temperature ranged from 7° to 31°. June is the most reliable, staying within 8°.
Common questions about Fond du Lac’s climate
What is the coldest month in Fond du Lac?
January, with a typical high of 26° and a low of 10°.
What is the hottest month in Fond du Lac?
July, with a typical high of 82° and a low of 60°. About 5 days a year reach 90°.
How much snow does Fond du Lac get?
About 38 inches in a normal winter, most of it in January.
When is the first frost in Fond du Lac?
In half of years the first 32° night comes by October 12, and the last spring frost by May 1.
What is the rainiest month in Fond du Lac?
June, with 4.5 inches of rain and melted snow. The year totals 32 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Fond du Lac itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Fond Du Lac WWTP, WI (2 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.