Green Lake, WI climate
Green Lake 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 Green Lake feels like
Winter
Spring
Summer
Fall
Green Lake 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° | 1.3" | 11.0" | 7 | 24 | 6° – 30° |
| February | 30° | 12° | 1.1" | 8.2" | 6 | 24 | 10° – 32° |
| March | 42° | 23° | 1.9" | 5.6" | 7 | 14 | 24° – 48° |
| April | 56° | 34° | 3.2" | 1.4" | 9 | 2 | 36° – 51° |
| May | 68° | 46° | 4.0" | 0 | 10 | 0 | 50° – 63° |
| June | 78° | 56° | 4.8" | 0 | 10 | 0 | 63° – 71° |
| July | 82° | 60° | 3.9" | 0 | 9 | 0 | 66° – 77° |
| August | 80° | 58° | 3.6" | 0 | 8 | 0 | 64° – 73° |
| September | 72° | 50° | 3.2" | 0 | 8 | 0 | 55° – 66° |
| October | 59° | 38° | 2.8" | 0.1" | 9 | 0 | 44° – 55° |
| November | 44° | 27° | 2.0" | 1.8" | 7 | 3 | 27° – 45° |
| December | 31° | 16° | 1.5" | 9.5" | 7 | 18 | 11° – 34° |
| Year | 56° | 36° | 33.3" | 37.6" | 97 | 84 |
“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 Green Lake
Green Lake gets 33 inches of rain and melted snow a year. June is the wettest month and February the driest. Rain or snow falls on about 97 days a year. Snow covers the ground about 84 days of the year.
About 144 frost-free days a year
In half of years the last 32° night comes by May 8 and the first one by October 2. That leaves about 144 frost-free days for gardens, shorter than 85% of U.S. towns.
Heating and cooling a home in Green Lake
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Green Lake, 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.
Green Lake and its neighbors
Green Lake borders 2 towns with climate data. January nights across them vary by 0.3°. Green Lake has the coldest January nights (9°) and Brooklyn the hottest July afternoons (82°). Green Lake’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 Green Lake 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 Green Lake averaged 1.4° warmer than the 1900s. The biggest change is in December (+3.1°). The shift is larger than in 66% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Green Lake’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. December swings the most: between 1991 and 2020 its average temperature ranged from 11° to 34°. June is the most reliable, staying within 8°.
Common questions about Green Lake’s climate
What is the coldest month in Green Lake?
January, with a typical high of 26° and a low of 10°.
What is the hottest month in Green Lake?
July, with a typical high of 82° and a low of 60°. About 7 days a year reach 90°.
How much snow does Green Lake get?
About 38 inches in a normal winter, most of it in January.
When is the first frost in Green Lake?
In half of years the first 32° night comes by October 2, and the last spring frost by May 8.
What is the rainiest month in Green Lake?
June, with 4.8 inches of rain and melted snow. The year totals 33 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Green Lake itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Ripon 5 Ne, WI (11 mi, snow) and Markesan, WI (10 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.