Frost Report

All states Wisconsin

Frost dates for Crandon, WI

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

May 19

typical year

Safe to plant

June 2

frost is over in 9 of 10 years

First fall frost

September 29

typical year

Growing season

131 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 21 – May 5 –
Spinach – Apr 7 – 28 Aug 4 – 18
Lettuce – Apr 21 – May 12 Aug 4 – 18
Radishes – Apr 21 – Jun 2 Aug 18 – Sep 1
Onions – Apr 21 – May 5 –
Potatoes – Apr 28 – May 12 –
Carrots – Apr 28 – May 19 Jul 7 – 21
Beets – Apr 21 – May 5 Jul 21 – Aug 4
Kale Mar 10 – 24 Apr 21 – May 5 Jul 21 – Aug 4
Broccoli Mar 10 – 24 May 5 – 19 Jul 21 – Aug 4
Cabbage Feb 24 – Mar 10 Apr 21 – May 5 Jul 21 – Aug 4
Garlic – – Aug 18 – Sep 8
Warm-season crops
Tomatoes Apr 7 – 21 Jun 2 – 16 –
Peppers Mar 31 – Apr 14 Jun 9 – 23 –
Cucumbers – Jun 2 – 23 –
Zucchini – Jun 2 – 30 –
Pumpkins – Jun 2 – 23 –
Green beans – Jun 2 – Jul 21 –
Sweet corn – Jun 2 – 30 –
Basil Apr 28 – May 12 Jun 9 – 16 –

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 June 2May 19May 5
Fall frost before September 15September 29October 13

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 May 6 (May 20 in a late year), and the first one in fall around October 9.

Towns that use these dates

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

Crandon

Where these dates come from

NOAA weather station LAONA 6 SW, WI US (USC00474582), 1991–2020 climate normals. It's the nearest station for 6 zip codes, all within 16 miles:

54462, 54465, 54511, 54520, 54541, 54566

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