Casco Township gets about 109 inches of snow a winter, more than 98% of U.S. towns
The warmest part of a July day comes in at 82° on average. Expect the heaviest rain or snow in October and the lightest in February. Summers stay cool: July afternoons here are cooler than in 80% of U.S. towns. For walks and days out, the stretch from May to September brings highs of 69–82°.
A year in Casco Township at a glance
Each month’s typical high and low, and what it brings.
What stands out about Casco Township’s climate
Compared with towns across the U.S., with Casco Township’s place in Michigan beside it.
What a year in Casco Township feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 201 frost-free days a year
In half of years the last 32° night comes by April 17 and the first by November 5. Frost and day counts come from NOAA’s station at S Haven, MI, 6 miles from the town’s center, at about the same height.
The 2023 USDA map puts Casco Township’s center in zone 6b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −2°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 109 inches of snow a winter
Snow, measured at Bloomingdale, MI, falls mostly in January and December. Precipitation (rain plus melted snow) adds up to 37 inches a year; October is the wettest month and February the driest. Rain or snow falls on about 143 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Casco Township
89% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at S Haven, MI.
Living with Casco Township’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
201 frost-free days in zone 6b. The last frost comes by Apr 17 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 5.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September. 2.0 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Casco Township from natural hazards, river flooding is the largest share (71%); heat waves, cold waves, winter storms and ice storms together are 5%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Casco Township and its neighbors
Lee Township has the coldest January nights next door (18°, 1° colder). Differences under a degree are within what the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Casco Township’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Casco Township, MI | 19° | 82° | 37" | 109" |
| Brighton, NY | 18° | 81° | 35" | 102" |
| Richmond Heights, OH | 21° | 82° | 41" | 114" |
| Erie, PA | 20° | 81° | 44" | 104" |
| Shelburne, VT | 11° | 82° | 38" | 88" |
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 Casco Township averaged 1.1° warmer than the 1900s. The biggest change is in December (+2.4°).
A smaller shift than in 68% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Casco Township compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Casco Township’s place among Michigan’s.
Casco Township weather by month
Highs, lows and precipitation from NOAA’s grid at Casco Township’s center; snow, wet days and snow on the ground from Bloomingdale, MI. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 32° | 19° | 2.4" | 35.9" | 17 | 17° – 36° |
| February | 35° | 20° | 2.1" | 22.9" | 13 | 16° – 36° |
| March | 45° | 28° | 2.1" | 7.9" | 12 | 28° – 51° |
| April | 57° | 37° | 3.5" | 1.7" | 12 | 39° – 53° |
| May | 69° | 47° | 3.9" | 0.0" | 12 | 51° – 64° |
| June | 78° | 57° | 3.6" | 0.0" | 10 | 62° – 73° |
| July | 82° | 62° | 3.3" | 0.0" | 8 | 67° – 78° |
| August | 80° | 60° | 3.6" | 0.0" | 10 | 65° – 76° |
| September | 74° | 53° | 3.2" | 0.0" | 9 | 58° – 68° |
| October | 62° | 43° | 3.9" | 0.5" | 12 | 49° – 58° |
| November | 48° | 33° | 2.9" | 7.3" | 13 | 34° – 48° |
| December | 37° | 25° | 2.6" | 32.8" | 15 | 21° – 41° |
| Year | 58° | 40° | 37.0" | 109.0" | 143 |
How much a month can swing
A normal is an average. March swings the most: from 1991 to 2020 its average ranged from 28° to 51°. September is the most reliable, staying within 9°.
Where Casco Township’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Casco Township’s center.
- Snow: Bloomingdale, MI.
- Frost, freezing nights, 90° and 100° days, heating and cooling: S Haven, MI, 6 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Casco Township’s climate
What is the weather like in Casco Township?
A typical July afternoon reaches 82°, a January night drops to 19°, and about 109 inches of snow falls in a normal winter. Colder January nights than 63% of U.S. towns; cooler July afternoons than 80% of U.S. towns.
How cold does it get in Casco Township in winter?
January nights average 19°. About 108 nights a year reach 32° or below and 2 reach 0° or below. In the coldest January of the last 30 years the month averaged 17°.
How much snow does Casco Township get?
About 109 inches in a normal winter at Bloomingdale, MI, most of it in January and December.
How hot does it get in Casco Township?
July, with a typical high of 82° and a low of 62°. About 3 days a year reach 90° (S Haven, MI).
When is the first and last frost in Casco Township?
In half of years the last spring frost (32°) comes by April 17 and the first fall frost by November 5, about 201 frost-free days, at S Haven, MI.
What growing zone is Casco Township in?
Zone 6b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −2°.
What is the best time of year to visit Casco Township?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, July, August and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Casco Township getting warmer?
Yes: 1991–2020 averaged 1.1° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 68% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Casco Township.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.