Grand Island, MI climate
Grand Island has cold, snowy winters and cool summers. A typical July afternoon reaches 73°, a January night drops to 12°, and about 161 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Grand Island feels like
Winter
Spring
Summer
Fall
Grand Island 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 | 24° | 12° | 2.8" | 46.0" | 22 | 31 | 7° – 28° |
| February | 26° | 12° | 1.8" | 32.4" | 17 | 29 | 6° – 31° |
| March | 35° | 19° | 1.8" | 17.9" | 12 | 31 | 15° – 39° |
| April | 45° | 30° | 2.6" | 9.6" | 11 | 18 | 31° – 45° |
| May | 59° | 40° | 3.1" | 0 | 13 | 0 | 43° – 55° |
| June | 68° | 49° | 3.2" | 0 | 12 | 0 | 55° – 64° |
| July | 73° | 55° | 3.5" | 0 | 12 | 0 | 58° – 69° |
| August | 73° | 56° | 3.0" | 0 | 10 | 0 | 59° – 68° |
| September | 66° | 50° | 3.9" | 0 | 14 | 0 | 52° – 63° |
| October | 53° | 39° | 4.2" | 1.1" | 18 | 1 | 41° – 52° |
| November | 40° | 29° | 3.1" | 14.9" | 17 | 12 | 27° – 42° |
| December | 30° | 19° | 2.7" | 39.1" | 19 | 26 | 14° – 33° |
| Year | 49° | 34° | 35.7" | 161.0" | 176 | 148 |
“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 Grand Island
Grand Island gets 36 inches of rain and melted snow a year. October is the wettest month and March the driest. Rain or snow falls on about 176 days a year. Snow covers the ground about 148 days of the year.
About 148 frost-free days a year
In half of years the last 32° night comes by May 16 and the first one by October 14. That leaves about 148 frost-free days for gardens, shorter than 82% of U.S. towns.
Heating and cooling a home in Grand Island
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Grand Island, 98% of that work is heating and 2% 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.
Grand Island and its neighbors
Grand Island borders 3 towns with climate data. January nights across them vary by 3.0°. Au Train has both the coldest January nights (9°) and the hottest July afternoons (77°). Grand Island’s January low is 12° and its July high 73°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Grand Island 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 Grand Island averaged 1.2° warmer than the 1900s. The biggest change is in February (+2.5°). The shift is larger than in 52% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Grand Island’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 6° to 31°. June is the most reliable, staying within 9°.
Common questions about Grand Island’s climate
What is the coldest month in Grand Island?
January, with a typical high of 24° and a low of 12°.
What is the hottest month in Grand Island?
July, with a typical high of 73° and a low of 55°. About 1 days a year reach 90°.
How much snow does Grand Island get?
About 161 inches in a normal winter, most of it in January.
When is the first frost in Grand Island?
In half of years the first 32° night comes by October 14, and the last spring frost by May 16.
What is the rainiest month in Grand Island?
October, with 4.2 inches of rain and melted snow. The year totals 36 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Grand Island itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Munising, MI (8 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.