Frost Report

All states Arizona

Frost dates for Douglas Bisbee Inl, 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 11

typical year

Safe to plant

April 27

frost is over in 9 of 10 years

First fall frost

November 2

typical year

Growing season

203 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 14 – 28 –
Spinach – Feb 28 – Mar 21 Sep 7 – 21
Lettuce – Mar 14 – Apr 4 Sep 7 – 21
Radishes – Mar 14 – Apr 25 Sep 21 – Oct 5
Onions – Mar 14 – 28 –
Potatoes – Mar 21 – Apr 4 –
Carrots – Mar 21 – Apr 11 Aug 10 – 24
Beets – Mar 14 – 28 Aug 24 – Sep 7
Kale Jan 31 – Feb 14 Mar 14 – 28 Aug 24 – Sep 7
Broccoli Jan 31 – Feb 14 Mar 28 – Apr 11 Aug 24 – Sep 7
Cabbage Jan 17 – 31 Mar 14 – 28 Aug 24 – Sep 7
Garlic – – Sep 21 – Oct 12
Warm-season crops
Tomatoes Mar 2 – 16 Apr 27 – May 11 –
Peppers Feb 23 – Mar 9 May 4 – 18 –
Cucumbers – Apr 27 – May 18 –
Zucchini – Apr 27 – May 25 –
Pumpkins – Apr 27 – May 18 –
Green beans – Apr 27 – Aug 24 –
Sweet corn – Apr 27 – May 25 –
Basil Mar 23 – Apr 6 May 4 – 11 –

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 27April 11March 27
Fall frost before October 21November 2November 15

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 27 (April 15 in a late year), and the first one in fall around November 12.

Where these dates come from

NOAA weather station DOUGLAS BISBEE INL AP, AZ US (USW00093026), 1991–2020 climate normals. It's the nearest station for 1 zip code, all within 1 miles:

85608

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