Frost Report

All states Arizona

Frost dates for Cordes, AZ

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 5

typical year

Safe to plant

April 24

frost is over in 9 of 10 years

First fall frost

November 17

typical year

Growing season

221 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 – Mar 8 – 22 –
Spinach – Feb 22 – Mar 15 Sep 22 – Oct 6
Lettuce – Mar 8 – 29 Sep 22 – Oct 6
Radishes – Mar 8 – Apr 19 Oct 6 – 20
Onions – Mar 8 – 22 –
Potatoes – Mar 15 – 29 –
Carrots – Mar 15 – Apr 5 Aug 25 – Sep 8
Beets – Mar 8 – 22 Sep 8 – 22
Kale Jan 25 – Feb 8 Mar 8 – 22 Sep 8 – 22
Broccoli Jan 25 – Feb 8 Mar 22 – Apr 5 Sep 8 – 22
Cabbage Jan 11 – 25 Mar 8 – 22 Sep 8 – 22
Garlic – – Oct 6 – 27
Warm-season crops
Tomatoes Feb 27 – Mar 13 Apr 24 – May 8 –
Peppers Feb 20 – Mar 6 May 1 – 15 –
Cucumbers – Apr 24 – May 15 –
Zucchini – Apr 24 – May 22 –
Pumpkins – Apr 24 – May 15 –
Green beans – Apr 24 – Sep 8 –
Sweet corn – Apr 24 – May 22 –
Basil Mar 20 – Apr 3 May 1 – 8 –

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 April 24April 5March 9
Fall frost before October 28November 17December 3

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 March 7 (April 9 in a late year), and the first one in fall around November 28.

Where these dates come from

NOAA weather station CORDES, AZ US (USC00022109), 1991–2020 climate normals. It's the nearest station for 3 zip codes, all within 15 miles:

85324, 86333, 86343

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