Rockwood has chilly, snowy winters and pleasant summers
A typical July afternoon reaches 83°, a January night drops to 20°, and about 54 inches of snow falls in a normal winter.
A year in Rockwood at a glance
Each month’s typical high and low, and what it brings.
What stands out about Rockwood’s climate
Read from where Rockwood sits among Michigan’s towns. The page puts what stands out first.
What a year in Rockwood feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
Living with Rockwood’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
188 frost-free days. The last frost comes by Apr 20 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 27.
About 54" a winter over 17 days with an inch or more, most in February. Snow covers the ground about 57 days a year.
Months averaging under 55° run from October through April. Heating is 88% of the year’s heating-and-cooling load.
About 13 days a year reach 90°, and July afternoons average 83°.
The nicest months are May, June, July, August and September. 0.0 miles of trails are waiting.
Parks & trails →Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.
Natural hazards →About 188 frost-free days a year
In half of years the last 32° night comes by April 20 and the first by October 27.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
54 inches of snow, 35 of rain and melt
May is the wettest month and February the driest. Rain or snow falls on about 142 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Rockwood and its neighbors
South Rockwood has the coldest January nights next door (19°) and Berlin the hottest July afternoons (84°). Tap a town to see its climate.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Rockwood averaged 1.5° warmer than the 1900s. The biggest change is in December (+2.7°).
A bigger shift than in 73% of U.S. towns.
Change by month
How Rockwood compares
Against every U.S. town on TownTapestry, each counted once, with its place in Michigan.
Rockwood 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 | 32° | 20° | 2.3" | 13.9" | 15 | 18 | 17° – 36° |
| February | 35° | 22° | 2.0" | 17.0" | 13 | 19 | 15° – 38° |
| March | 45° | 29° | 2.4" | 7.5" | 11 | 8 | 28° – 50° |
| April | 58° | 39° | 3.4" | 1.9" | 13 | 1 | 42° – 54° |
| May | 69° | 50° | 3.7" | 0.1" | 13 | 0 | 52° – 66° |
| June | 79° | 61° | 3.4" | 0 | 11 | 0 | 65° – 74° |
| July | 83° | 65° | 3.4" | 0 | 11 | 0 | 69° – 78° |
| August | 81° | 64° | 3.5" | 0 | 9 | 0 | 67° – 77° |
| September | 74° | 56° | 3.1" | 0 | 9 | 0 | 60° – 69° |
| October | 62° | 45° | 2.8" | 0 | 12 | 0 | 50° – 60° |
| November | 48° | 35° | 2.7" | 2.2" | 11 | 2 | 35° – 48° |
| December | 37° | 26° | 2.3" | 10.9" | 13 | 10 | 20° – 41° |
| Year | 59° | 43° | 34.9" | 53.5" | 142 | 57 |
Heating and cooling a home in Rockwood
88% of the work is heating, so the furnace matters far more than the air conditioner.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. Source: NOAA station normals.
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 15° to 38°. September is the most reliable, staying within 9°.
Common questions about Rockwood’s climate
What is the coldest month in Rockwood?
January, with a typical high of 32° and a low of 20°.
What is the hottest month in Rockwood?
July, with a typical high of 83° and a low of 65°. About 13 days a year reach 90°.
How much snow does Rockwood get?
About 54 inches in a normal winter, most of it in February.
When is the first frost in Rockwood?
In half of years the first 32° night comes by October 27, and the last spring frost by April 20.
What is the rainiest month in Rockwood?
May, with 3.7 inches of rain and melted snow. The year totals 35 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Rockwood.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Rockwood itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Wyandotte, MI (10 mi, snow) and Detroit Metro Airport, MI (12 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. Today’s forecast: National Weather Service.