Calumet, IN climate
Calumet has chilly winters and pleasant summers. A typical July afternoon reaches 83°, a January night drops to 18°, and about 27 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Calumet feels like
Winter
Spring
Summer
Fall
Calumet 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 | 33° | 18° | 2.2" | 10.3" | 10 | 12 | 15° – 37° |
| February | 36° | 21° | 1.9" | 6.3" | 8 | 9 | 17° – 39° |
| March | 47° | 29° | 2.3" | 4.3" | 10 | 3 | 29° – 53° |
| April | 59° | 38° | 3.6" | 0.6" | 10 | 0 | 40° – 55° |
| May | 70° | 49° | 4.3" | 0 | 12 | 0 | 53° – 66° |
| June | 80° | 59° | 4.3" | 0 | 10 | 0 | 64° – 74° |
| July | 83° | 64° | 4.1" | 0 | 9 | 0 | 68° – 79° |
| August | 82° | 62° | 3.9" | 0 | 9 | 0 | 67° – 78° |
| September | 76° | 55° | 3.5" | 0 | 8 | 0 | 59° – 70° |
| October | 63° | 43° | 3.5" | 0 | 10 | 0 | 49° – 59° |
| November | 49° | 33° | 2.8" | 0.4" | 9 | 0 | 34° – 49° |
| December | 37° | 23° | 2.2" | 4.7" | 9 | 5 | 17° – 40° |
| Year | 60° | 41° | 38.4" | 26.6" | 112 | 29 |
“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 Calumet
Calumet gets 38 inches of rain and melted snow a year. May is the wettest month and February the driest. Rain or snow falls on about 112 days a year. Snow covers the ground about 29 days of the year.
About 188 frost-free days a year
In half of years the last 32° night comes by April 22 and the first one by October 27. That leaves about 188 frost-free days for gardens, longer than 62% of U.S. towns.
Heating and cooling a home in Calumet
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Calumet, 88% of that work is heating and 12% 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.
Calumet and its neighbors
Calumet borders 12 towns with climate data. January nights across them vary by 2.3°. Ross has the coldest January nights (17°) and Griffith the hottest July afternoons (84°). Calumet’s January low is 18° and its July high 83°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Calumet 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 Calumet averaged 1.2° warmer than the 1900s. The biggest change is in December (+2.6°). The shift is larger than in 50% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Calumet’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. March swings the most: between 1991 and 2020 its average temperature ranged from 29° to 53°. June is the most reliable, staying within 9°.
Common questions about Calumet’s climate
What is the coldest month in Calumet?
January, with a typical high of 33° and a low of 18°.
What is the hottest month in Calumet?
July, with a typical high of 83° and a low of 64°. About 11 days a year reach 90°.
How much snow does Calumet get?
About 27 inches in a normal winter, most of it in January.
When is the first frost in Calumet?
In half of years the first 32° night comes by October 27, and the last spring frost by April 22.
What is the rainiest month in Calumet?
May, with 4.3 inches of rain and melted snow. The year totals 38 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Calumet itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Crown Pt 1n, IN (10 mi, snow) and Indiana Dunes Nl, IN (14 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.