Photo: Dwight Burdette · CC BY 3.0Winter nights in Green Oak Township are colder than in 82% of U.S. towns
Peak summer warmth arrives in July, with afternoons near 83°. Expect the heaviest rain or snow in May and the lightest in February. By precipitation alone, it ranks drier than 80% of U.S. towns. The frost-free window for a garden runs roughly May 5 to October 13.
A year in Green Oak Township at a glance
Each month’s typical high and low, and what it brings.
What stands out about Green Oak Township’s climate
Compared with towns across the U.S., with Green Oak Township’s place in Michigan beside it.
What a year in Green Oak Township feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 160 frost-free days a year
In half of years the last 32° night comes by May 5 and the first by October 13. Frost and day counts come from NOAA’s station at Whitmore Lake 1nw, MI, 4 miles from the town’s center, at about the same height.
The 2023 USDA map puts Green Oak Township’s center in zone 6a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −8°. 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 61 inches of snow a winter
Snow, measured at Ann Arbor U Of Mich, MI, falls mostly in January. Precipitation (rain plus melted snow) adds up to 34 inches a year; May is the wettest month and February the driest. Rain or snow falls on about 166 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Green Oak Township
94% 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 Whitmore Lake 1nw, MI.
Living with Green Oak Township’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
160 frost-free days in zone 6a. The last frost comes by May 5 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 13.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September. 105 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Green Oak Township from natural hazards, river flooding is the largest share (52%); heat waves, cold waves, winter storms and ice storms together are 14%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Green Oak Township and its neighbors
Every town next door is within a degree of Green Oak Township in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Green Oak 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 |
|---|---|---|---|---|
| Green Oak Township, MI | 16° | 83° | 34" | 61" |
| Hornell, NY | 15° | 82° | 35" | 62" |
| Mequon, WI | 14° | 82° | 34" | 54" |
| Antioch, IL | 15° | 83° | 36" | 43" |
| Michigan City, IN | 19° | 82° | 39" | 65" |
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 Green Oak Township averaged 1.8° warmer than the 1900s. The biggest change is in December (+3.0°).
A bigger shift than in 80% 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 Green Oak Township compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Green Oak Township’s place among Michigan’s.
Green Oak Township weather by month
Highs, lows and precipitation from NOAA’s grid at Green Oak Township’s center; snow, wet days and snow on the ground from Ann Arbor U Of Mich, MI. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 31° | 16° | 2.2" | 18.3" | 18 | 21 | 14° – 33° |
| February | 34° | 17° | 1.8" | 15.3" | 14 | 17 | 11° – 35° |
| March | 45° | 25° | 2.2" | 8.3" | 14 | 7 | 26° – 49° |
| April | 58° | 36° | 3.1" | 2.6" | 14 | 1 | 40° – 52° |
| May | 70° | 46° | 3.7" | 0.0" | 15 | 0 | 50° – 64° |
| June | 79° | 56° | 3.6" | 0.0" | 12 | 0 | 63° – 71° |
| July | 83° | 60° | 3.4" | 0.0" | 12 | 0 | 66° – 77° |
| August | 80° | 59° | 3.3" | 0.0" | 11 | 0 | 64° – 74° |
| September | 74° | 51° | 3.0" | 0.0" | 11 | 0 | 56° – 67° |
| October | 61° | 40° | 2.9" | 0.1" | 13 | 0 | 47° – 57° |
| November | 47° | 30° | 2.5" | 4.1" | 14 | 2 | 32° – 46° |
| December | 36° | 22° | 2.1" | 12.7" | 17 | 12 | 16° – 39° |
| Year | 58° | 38° | 33.5" | 61.4" | 166 | 59 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 11° to 35°. June is the most reliable, staying within 9°.
Where Green Oak 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 Green Oak Township’s center.
- Snow: Ann Arbor U Of Mich, MI.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Whitmore Lake 1nw, MI, 4 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 Green Oak Township’s climate
What is the weather like in Green Oak Township?
A typical July afternoon reaches 83°, a January night drops to 16°, and about 61 inches of snow falls in a normal winter. Colder January nights than 82% of U.S. towns; cooler July afternoons than 75% of U.S. towns.
How cold does it get in Green Oak Township in winter?
January nights average 16°. About 152 nights a year reach 32° or below and 9 reach 0° or below. In the coldest January of the last 30 years the month averaged 14°.
How much snow does Green Oak Township get?
About 61 inches in a normal winter at Ann Arbor U Of Mich, MI, most of it in January, with snow on the ground about 59 days a year.
How hot does it get in Green Oak Township?
July, with a typical high of 83° and a low of 60°. About 6 days a year reach 90° (Whitmore Lake 1nw, MI).
When is the first and last frost in Green Oak Township?
In half of years the last spring frost (32°) comes by May 5 and the first fall frost by October 13, about 160 frost-free days, at Whitmore Lake 1nw, MI.
What growing zone is Green Oak Township in?
Zone 6a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −8°.
What is the best time of year to visit Green Oak 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 Green Oak Township getting warmer?
Yes: 1991–2020 averaged 1.8° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 80% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Green Oak 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.