St. Francis, WI climate
St. Francis has chilly, snowy winters and pleasant summers. A typical July afternoon reaches 80°, a January night drops to 16°, and about 49 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in St. Francis feels like
Winter
Spring
Summer
Fall
St. Francis 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 | 30° | 16° | 1.7" | 14.9" | 11 | 20 | 13° – 34° |
| February | 33° | 19° | 1.6" | 11.8" | 10 | 17 | 15° – 36° |
| March | 43° | 28° | 2.0" | 6.7" | 11 | 8 | 28° – 49° |
| April | 53° | 36° | 3.7" | 2.1" | 12 | 1 | 37° – 51° |
| May | 65° | 46° | 3.7" | 0 | 12 | 0 | 49° – 61° |
| June | 75° | 57° | 4.3" | 0 | 11 | 0 | 62° – 71° |
| July | 80° | 63° | 3.4" | 0 | 10 | 0 | 67° – 78° |
| August | 79° | 63° | 3.7" | 0 | 10 | 0 | 66° – 76° |
| September | 72° | 55° | 3.3" | 0 | 9 | 0 | 58° – 68° |
| October | 60° | 43° | 2.9" | 0.3" | 10 | 0 | 47° – 58° |
| November | 46° | 32° | 2.2" | 2.5" | 10 | 2 | 30° – 48° |
| December | 35° | 22° | 1.9" | 10.4" | 10 | 11 | 17° – 38° |
| Year | 56° | 40° | 34.2" | 48.7" | 126 | 58 |
“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 St. Francis
St. Francis gets 34 inches of rain and melted snow a year. June is the wettest month and February the driest. Rain or snow falls on about 126 days a year. Snow covers the ground about 58 days of the year.
About 192 frost-free days a year
In half of years the last 32° night comes by April 19 and the first one by October 29. That leaves about 192 frost-free days for gardens, longer than 66% of U.S. towns.
Heating and cooling a home in St. Francis
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In St. Francis, 89% of that work is heating and 11% 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.
St. Francis and its neighbors
St. Francis borders 2 towns with climate data. January nights across them vary by 1.7°. Milwaukee has both the coldest January nights (15°) and the hottest July afternoons (82°). St. Francis’s January low is 16° and its July high 80°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How St. Francis 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 St. Francis averaged 1.3° warmer than the 1900s. The biggest change is in December (+3.0°). The shift is larger than in 54% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at St. Francis’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 13° to 34°. June is the most reliable, staying within 9°.
Common questions about St. Francis’s climate
What is the coldest month in St. Francis?
January, with a typical high of 30° and a low of 16°.
What is the hottest month in St. Francis?
July, with a typical high of 80° and a low of 63°. About 9 days a year reach 90°.
How much snow does St. Francis get?
About 49 inches in a normal winter, most of it in January.
When is the first frost in St. Francis?
In half of years the first 32° night comes by October 29, and the last spring frost by April 19.
What is the rainiest month in St. Francis?
June, with 4.3 inches of rain and melted snow. The year totals 34 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for St. Francis itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Milwaukee Mitchell Airport, WI (2 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.