Duncan Township gets about 121 inches of snow a winter, more than all but 134 U.S. towns
High summer brings afternoon highs near 78°. A year here swings 74° from midwinter lows to midsummer highs. In July, afternoons here are cooler than in 96% of U.S. towns. Warm coats and heating bills mark the months from October to April, when means dip under 50°.
A year in Duncan Township at a glance
Each month’s typical high and low, and what it brings.
What stands out about Duncan Township’s climate
Compared with towns across the U.S., with Duncan Township’s place in Michigan beside it.
What a year in Duncan Township feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 123 frost-free days a year
In half of years the last 32° night comes by May 25 and the first by September 25. Frost and day counts come from NOAA’s station at Watton 2wsw, MI, 8 miles from the town’s center, at about the same height.
The 2023 USDA map puts Duncan Township’s center in zone 4b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −23°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
About 121 inches of snow a winter
Snow, measured at Watton 2wsw, MI, falls mostly in January and December. Precipitation (rain plus melted snow) adds up to 32 inches a year; July is the wettest month and February the driest. Rain or snow falls on about 172 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Duncan Township
98% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through May.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Watton 2wsw, MI.
Living with Duncan Township’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
123 frost-free days in zone 4b. The last frost comes by May 25 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Sep 25.
Months with highs of 62–84° and lows of 40° or more: June, July, August and September. 218 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Duncan Township from natural hazards, river flooding is the largest share (69%); heat waves, cold waves, winter storms and ice storms together are 22%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Duncan Township and its neighbors
Bates Township has the coldest January nights next door (3°, 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 Duncan 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 |
|---|---|---|---|---|
| Duncan Township, MI | 4° | 78° | 32" | 121" |
| Hermantown, MN | 2° | 77° | 31" | 90" |
| Caribou, ME | 2° | 77° | 41" | 118" |
| Lyndon, VT | 5° | 79° | 41" | 142" |
| Malone, NY | 7° | 79° | 41" | 98" |
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 Duncan Township averaged 1.6° warmer than the 1900s. The biggest change is in December (+3.4°).
A bigger 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 Duncan Township compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Duncan Township’s place among Michigan’s.
Duncan Township weather by month
Highs, lows and precipitation from NOAA’s grid at Duncan Township’s center; snow, wet days and snow on the ground from Watton 2wsw, MI. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 22° | 4° | 1.8" | 24.8" | 20 | 31 | 1° – 24° |
| February | 26° | 4° | 1.4" | 20.9" | 16 | 29 | 0° – 29° |
| March | 38° | 13° | 1.6" | 13.6" | 11 | 28 | 14° – 41° |
| April | 50° | 26° | 2.5" | 15.6" | 13 | 15 | 29° – 46° |
| May | 65° | 39° | 3.0" | 1.0" | 13 | 1 | 44° – 58° |
| June | 74° | 49° | 3.3" | 0.0" | 12 | 0 | 58° – 66° |
| July | 78° | 53° | 3.9" | 0.0" | 11 | 0 | 58° – 70° |
| August | 76° | 51° | 2.9" | 0.0" | 11 | 0 | 59° – 68° |
| September | 68° | 45° | 3.7" | 0.0" | 14 | 0 | 49° – 61° |
| October | 54° | 34° | 3.6" | 3.8" | 16 | 2 | 38° – 49° |
| November | 39° | 23° | 2.3" | 16.9" | 16 | 16 | 21° – 40° |
| December | 27° | 12° | 1.9" | 24.7" | 19 | 29 | 9° – 28° |
| Year | 51° | 29° | 31.9" | 121.3" | 172 | 149 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 0° to 29°. June is the most reliable, staying within 9°.
Where Duncan 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 Duncan Township’s center.
- Snow: Watton 2wsw, MI.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Watton 2wsw, MI, 8 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 Duncan Township’s climate
What is the weather like in Duncan Township?
A typical July afternoon reaches 78°, a January night drops to 4°, and about 121 inches of snow falls in a normal winter. Colder January nights than all but 160 U.S. towns; cooler July afternoons than 96% of U.S. towns.
How cold does it get in Duncan Township in winter?
February nights average 4°. About 189 nights a year reach 32° or below and 29 reach 0° or below. In the coldest February of the last 30 years the month averaged 0°.
How much snow does Duncan Township get?
About 121 inches in a normal winter at Watton 2wsw, MI, most of it in January and December, with snow on the ground about 149 days a year.
How hot does it get in Duncan Township?
July, with a typical high of 78°. 90° days are rare: none in a normal year at Watton 2wsw, MI.
When is the first and last frost in Duncan Township?
In half of years the last spring frost (32°) comes by May 25 and the first fall frost by September 25, about 123 frost-free days, at Watton 2wsw, MI.
What growing zone is Duncan Township in?
Zone 4b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −23°.
What is the best time of year to visit Duncan Township?
By one simple rule (highs of 62–84° and lows of 40° or more), June, July, August and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Duncan Township getting warmer?
Yes: 1991–2020 averaged 1.6° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 68% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Duncan 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.