Frost Report

All states Arizona

Frost dates for Greer, 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

June 5

typical year

Safe to plant

June 20

frost is over in 9 of 10 years

First fall frost

September 29

typical year

Growing season

113 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 – May 8 – 22 –
Spinach – Apr 24 – May 15 Aug 4 – 18
Lettuce – May 8 – 29 Aug 4 – 18
Radishes – May 8 – Jun 19 Aug 18 – Sep 1
Onions – May 8 – 22 –
Potatoes – May 15 – 29 –
Carrots – May 15 – Jun 5 Jul 7 – 21
Beets – May 8 – 22 Jul 21 – Aug 4
Kale Mar 27 – Apr 10 May 8 – 22 Jul 21 – Aug 4
Broccoli Mar 27 – Apr 10 May 22 – Jun 5 Jul 21 – Aug 4
Cabbage Mar 13 – 27 May 8 – 22 Jul 21 – Aug 4
Garlic – – Aug 18 – Sep 8
Warm-season crops
Tomatoes Apr 25 – May 9 Jun 20 – Jul 4 –
Peppers Apr 18 – May 2 Jun 27 – Jul 11 –
Cucumbers – Jun 20 – Jul 11 –
Zucchini – Jun 20 – Jul 18 –
Pumpkins – Jun 20 – Jul 11 –
Green beans – Jun 20 – Jul 21 –
Sweet corn – Jun 20 – Jul 18 –
Basil May 16 – 30 Jun 27 – Jul 4 –

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 20June 5May 24
Fall frost before September 15September 29October 9

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 23 (June 8 in a late year), and the first one in fall around October 5.

Where these dates come from

NOAA weather station GREER, AZ US (USC00023683), 1991–2020 climate normals. It's the nearest station for 2 zip codes, all within 6 miles:

85925, 85927

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