Frost Report

All states New Mexico

Frost dates for El Morro Natl Mon, NM

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 3

typical year

Safe to plant

June 15

frost is over in 9 of 10 years

First fall frost

September 27

typical year

Growing season

114 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 6 – 20 –
Spinach – Apr 22 – May 13 Aug 2 – 16
Lettuce – May 6 – 27 Aug 2 – 16
Radishes – May 6 – Jun 17 Aug 16 – 30
Onions – May 6 – 20 –
Potatoes – May 13 – 27 –
Carrots – May 13 – Jun 3 Jul 5 – 19
Beets – May 6 – 20 Jul 19 – Aug 2
Kale Mar 25 – Apr 8 May 6 – 20 Jul 19 – Aug 2
Broccoli Mar 25 – Apr 8 May 20 – Jun 3 Jul 19 – Aug 2
Cabbage Mar 11 – 25 May 6 – 20 Jul 19 – Aug 2
Garlic – – Aug 16 – Sep 6
Warm-season crops
Tomatoes Apr 20 – May 4 Jun 15 – 29 –
Peppers Apr 13 – 27 Jun 22 – Jul 6 –
Cucumbers – Jun 15 – Jul 6 –
Zucchini – Jun 15 – Jul 13 –
Pumpkins – Jun 15 – Jul 6 –
Green beans – Jun 15 – Jul 19 –
Sweet corn – Jun 15 – Jul 13 –
Basil May 11 – 25 Jun 22 – 29 –

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 15June 3May 20
Fall frost before September 14September 27October 7

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 20 (June 6 in a late year), and the first one in fall around October 4.

Where these dates come from

NOAA weather station EL MORRO NATL MON, NM US (USC00292785), 1991–2020 climate normals. It's the nearest station for 2 zip codes, all within 15 miles:

87321, 87357

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