Frost Report

All states Utah

Frost dates for Garden City, UT

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 15

typical year

Safe to plant

June 5

frost is over in 9 of 10 years

First fall frost

October 4

typical year

Growing season

140 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 17 – May 1 –
Spinach – Apr 3 – 24 Aug 9 – 23
Lettuce – Apr 17 – May 8 Aug 9 – 23
Radishes – Apr 17 – May 29 Aug 23 – Sep 6
Onions – Apr 17 – May 1 –
Potatoes – Apr 24 – May 8 –
Carrots – Apr 24 – May 15 Jul 12 – 26
Beets – Apr 17 – May 1 Jul 26 – Aug 9
Kale Mar 6 – 20 Apr 17 – May 1 Jul 26 – Aug 9
Broccoli Mar 6 – 20 May 1 – 15 Jul 26 – Aug 9
Cabbage Feb 20 – Mar 6 Apr 17 – May 1 Jul 26 – Aug 9
Garlic – – Aug 23 – Sep 13
Warm-season crops
Tomatoes Apr 10 – 24 Jun 5 – 19 –
Peppers Apr 3 – 17 Jun 12 – 26 –
Cucumbers – Jun 5 – 26 –
Zucchini – Jun 5 – Jul 3 –
Pumpkins – Jun 5 – 26 –
Green beans – Jun 5 – Jul 26 –
Sweet corn – Jun 5 – Jul 3 –
Basil May 1 – 15 Jun 12 – 19 –

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 5May 15April 30
Fall frost before September 22October 4October 17

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 April 30 (May 22 in a late year), and the first one in fall around October 15.

Towns that use these dates

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

Garden City

Where these dates come from

NOAA weather station BEAR LAKE SP, UT US (USC00420487), 1991–2020 climate normals. It's the nearest station for 2 zip codes, all within 5 miles:

83287, 84028

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