Frost dates for South Haven, 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 17
typical year
Safe to plant
May 4
frost is over in 9 of 10 years
First fall frost
November 5
typical year
Growing season
201 days
frost-free, typical year
Frost watch this week
Tonight's and the next six nights' lows from the National Weather Service forecast for the station's location. Frost: 32°F or colder. Possible frost: 33–36°F, mostly in low spots on clear, still nights.
When to plant
Counted from this page's frost dates. Warm-season crops wait for the safe-to-plant date.
| Crop | Start indoors | Plant outside | Fall planting |
|---|---|---|---|
| Cool-season crops | |||
| Peas | – | Mar 20 – Apr 3 | – |
| Spinach | – | Mar 6 – 27 | Sep 10 – 24 |
| Lettuce | – | Mar 20 – Apr 10 | Sep 10 – 24 |
| Radishes | – | Mar 20 – May 1 | Sep 24 – Oct 8 |
| Onions | – | Mar 20 – Apr 3 | – |
| Potatoes | – | Mar 27 – Apr 10 | – |
| Carrots | – | Mar 27 – Apr 17 | Aug 13 – 27 |
| Beets | – | Mar 20 – Apr 3 | Aug 27 – Sep 10 |
| Kale | Feb 6 – 20 | Mar 20 – Apr 3 | Aug 27 – Sep 10 |
| Broccoli | Feb 6 – 20 | Apr 3 – 17 | Aug 27 – Sep 10 |
| Cabbage | Jan 23 – Feb 6 | Mar 20 – Apr 3 | Aug 27 – Sep 10 |
| Garlic | – | – | Sep 24 – Oct 15 |
| Warm-season crops | |||
| Tomatoes | Mar 9 – 23 | May 4 – 18 | – |
| Peppers | Mar 2 – 16 | May 11 – 25 | – |
| Cucumbers | – | May 4 – 25 | – |
| Zucchini | – | May 4 – Jun 1 | – |
| Pumpkins | – | May 4 – 25 | – |
| Green beans | – | May 4 – Aug 27 | – |
| Sweet corn | – | May 4 – Jun 1 | – |
| Basil | Mar 30 – Apr 13 | May 11 – 18 | – |
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 10 | Half of years | 9 years in 10 | |
|---|---|---|---|
| Spring frost after | May 4 | April 17 | April 3 |
| Fall frost before | October 24 | November 5 | November 19 |
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 5 (April 20 in a late year), and the first one in fall around November 14.
Towns that use these dates
This is the nearest NOAA station with frost records for 1 town.
South Haven
Where these dates come from
NOAA weather station S HAVEN, MI US (USC00207690), 1991–2020 climate normals. It's the nearest station for 3 zip codes, all within 8 miles:
49043, 49063, 49090
Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.