Frost Report

All states Michigan

Frost dates for Lowell, MI

When the last spring frost and first fall frost usually come, and when to plant, from 30 years of NOAA weather records.

Last spring frost

April 29

typical year

Safe to plant

May 15

frost is over in 9 of 10 years

First fall frost

October 20

typical year

Growing season

174 days

frost-free, typical year

When to plant

Counted from this page's frost dates. Warm-season crops wait for the safe-to-plant date.

CropStart indoorsPlant outsideFall planting
Cool-season crops
Peas – Apr 1 – 15 –
Spinach – Mar 18 – Apr 8 Aug 25 – Sep 8
Lettuce – Apr 1 – 22 Aug 25 – Sep 8
Radishes – Apr 1 – May 13 Sep 8 – 22
Onions – Apr 1 – 15 –
Potatoes – Apr 8 – 22 –
Carrots – Apr 8 – 29 Jul 28 – Aug 11
Beets – Apr 1 – 15 Aug 11 – 25
Kale Feb 18 – Mar 4 Apr 1 – 15 Aug 11 – 25
Broccoli Feb 18 – Mar 4 Apr 15 – 29 Aug 11 – 25
Cabbage Feb 4 – 18 Apr 1 – 15 Aug 11 – 25
Garlic – – Sep 8 – 29
Warm-season crops
Tomatoes Mar 20 – Apr 3 May 15 – 29 –
Peppers Mar 13 – 27 May 22 – Jun 5 –
Cucumbers – May 15 – Jun 5 –
Zucchini – May 15 – Jun 12 –
Pumpkins – May 15 – Jun 5 –
Green beans – May 15 – Aug 11 –
Sweet corn – May 15 – Jun 12 –
Basil Apr 10 – 24 May 22 – 29 –

Onions: from sets. Green beans: until 10 weeks before the first fall frost. Garlic: harvest next summer.

The year at a glance

Start indoors Plant outside Fall planting

The chance of frost, by date

1 year in 10Half of years9 years in 10
Spring frost after May 15April 29April 14
Fall frost before October 4October 20November 2

Frost here means 32°F or colder. Read across: in 1 year in 10, spring frost carries on past the first date, which is why that date is the safe-to-plant date.

Hard freeze (28°F)

A hard freeze kills most garden plants, even hardy ones. The last one in spring usually comes around April 16 (May 2 in a late year), and the first one in fall around November 2.

Towns that use these dates

This is the nearest NOAA station with frost records for 1 town.

Lowell

Where these dates come from

NOAA weather station GRAND RAPIDS, MI US (USW00094860), 1991–2020 climate normals. It's the nearest station for 3 zip codes, all within 10 miles:

49301, 49331, 49546

Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.