When is the last frost in Wyoming, MI?

The average last spring frost (50% probability of 32°F) in Wyoming is around May 6, based on NOAA/NCEI 1991–2020 normals at the E Grand Rapids, MI station (6.1 mi away). Half of years it falls outside that date, so wait 1–2 weeks past it before setting out frost-tender plants.

When is the first fall frost in Wyoming?

The average first fall frost in Wyoming, MI is around October 10, giving roughly a 157-day frost-free growing season.

What planting zone is Wyoming, MI?

Wyoming is in USDA plant hardiness zone 6a (average annual extreme minimum temperature -10 to -5°F), from the 2023 USDA Plant Hardiness Zone Map.

What is the weather like in Wyoming?

In Wyoming, MI the warmest month is July (avg high 82.4°F) and the coldest is January (avg low 17°F). It averages about 39.6″ of precipitation a year and 74.9″ of snow.

Home › Michigan › Wyoming

Wyoming, MI Planting Calendar & Frost Dates

USDA hardiness zone 6a · ZIP 49519 · elevation 227′ · NOAA & USDA data

Wyoming is in USDA hardiness zone 6a (winters can dip to -10 to -5°F), with a growing season of about 157 days between the average last spring frost (May 6) and first fall frost (October 10). The warmest month is July (avg high 82.4°F); the coldest is January (avg low 17°F). It averages 39.6″ of precipitation a year and 74.9″ of snow, mostly mid-winter. Start cool-season crops several weeks before the last frost; wait until after it for tomatoes, peppers and other tender crops.

Hardiness zone

min temp -10 to -5°F

Last spring frost

May 6

avg (50% prob, 32°F)

First fall frost

October 10

avg (50% prob, 32°F)

Growing season

157 days

frost-free window

Warmest month

July

avg high 82.4°F

Month-by-month typical weather in Wyoming

Average conditions from the NOAA/NCEI 1991–2020 U.S. Climate Normals at E Grand Rapids, MI (6.1 mi away). Temperatures °F, precipitation & snow in inches.

Month	Avg high	Avg low	Mean	Precip (in)	Snow (in)
January	30.5	17	23.8	2.7	21.7
February	33.8	17.8	25.8	2.1	22.3
March	44.1	24.4	34.3	2.6	5.3
April	57.2	34.7	46	4.1	2.6
May	69.3	45.8	57.6	4.4	0
June	78.5	56.3	67.4	4	0
July	82.4	60	71.2	3.3	0
August	80.7	58.1	69.4	3.1	0
September	73.6	50.6	62.1	3.5	0
October	60.8	40	50.4	3.7	0
November	46.9	30.5	38.7	3.3	6
December	35.5	23.2	29.4	2.8	17

What to plant when in Wyoming

Crop	Season	What to do & when
Tomatoes	warm	Start seeds indoors: March 25 · Transplant out: May 13
Peppers	warm	Start seeds indoors: March 11 · Transplant out: May 20
Cucumbers	warm	Direct sow: May 13
Zucchini / squash	warm	Direct sow: May 13
Bush beans	warm	Direct sow: May 13
Sweet corn	warm	Direct sow: May 13
Basil	warm	Transplant out: May 13
Peas	cool	Sow (spring): April 1 · Sow (fall): August 15
Spinach	cool	Sow (spring): March 25 · Sow (fall): August 15
Lettuce	cool	Sow (spring): April 8 · Sow (fall): August 15
Kale	cool	Transplant (spring): April 15 · Sow (fall): August 1
Broccoli	cool	Transplant (spring): April 22
Carrots	cool	Sow (spring): April 15 · Sow (fall): August 1
Onions	cool	Transplant (spring): April 8
Potatoes	cool	Plant seed potatoes: April 22
Radishes	cool	Sow (spring): April 8 · Sow (fall): August 29

Dates are computed from Wyoming's average frost dates using standard cool-/warm-season timing. They're a starting point — a cold spring, a warm microclimate, or a fast-maturing variety can shift them by a week or two.

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Gear that helps you plant on time

Some links below are Amazon affiliate links (tag theboringthin-20). If you buy through them we may earn a small commission at no extra cost to you — it keeps this almanac free. We only list generic, genuinely-useful categories.

Soil thermometer →Know when the ground is warm enough to sow — the honest signal, not the calendar.Seed-starting trays + dome →Start tomatoes & peppers indoors on the schedule below.Seedling heat mat →Warms the soil for faster, more even germination indoors.Floating row cover / frost cloth →Buys you 4–8°F to beat an early or late frost.Raised garden bed kit →Warms and drains faster in spring than in-ground soil.Garden gloves →Basic kit for transplant day.

Nearby cities in Michigan

Grand Rapids, MI Muskegon, MI Kalamazoo, MI Portage, MI Battle Creek, MI Lansing, MI East Lansing, MI Midland, MI

Sources & method. Hardiness zone: 2023 USDA Plant Hardiness Zone Map (PRISM Climate Group, Oregon State University). Frost dates & growing season: NOAA/NCEI 1991–2020 U.S. Climate Normals, nearest station with published freeze normals — E Grand Rapids, MI, 6.1 mi (confidence: high). Monthly weather normals: E Grand Rapids, MI, 6.1 mi (confidence: high). ZIP centroid from U.S. Census 2023 ZCTA data. Frost dates are the 50%-probability date — half of years frost occurs outside the stated date. Nothing here is invented; where the nearest station is far, we say so. Last updated 2026-07-22.