Frost Report

All states Idaho

Frost dates for Grand View, ID

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 28

typical year

Safe to plant

May 13

frost is over in 9 of 10 years

First fall frost

October 6

typical year

Growing season

162 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 31 – Apr 14 –
Spinach – Mar 17 – Apr 7 Aug 11 – 25
Lettuce – Mar 31 – Apr 21 Aug 11 – 25
Radishes – Mar 31 – May 12 Aug 25 – Sep 8
Onions – Mar 31 – Apr 14 –
Potatoes – Apr 7 – 21 –
Carrots – Apr 7 – 28 Jul 14 – 28
Beets – Mar 31 – Apr 14 Jul 28 – Aug 11
Kale Feb 17 – Mar 3 Mar 31 – Apr 14 Jul 28 – Aug 11
Broccoli Feb 17 – Mar 3 Apr 14 – 28 Jul 28 – Aug 11
Cabbage Feb 3 – 17 Mar 31 – Apr 14 Jul 28 – Aug 11
Garlic – – Aug 25 – Sep 15
Warm-season crops
Tomatoes Mar 18 – Apr 1 May 13 – 27 –
Peppers Mar 11 – 25 May 20 – Jun 3 –
Cucumbers – May 13 – Jun 3 –
Zucchini – May 13 – Jun 10 –
Pumpkins – May 13 – Jun 3 –
Green beans – May 13 – Jul 28 –
Sweet corn – May 13 – Jun 10 –
Basil Apr 8 – 22 May 20 – 27 –

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 May 13April 28April 12
Fall frost before September 24October 6October 22

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 12 (May 1 in a late year), and the first one in fall around October 20.

Towns that use these dates

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

Grand View

Where these dates come from

NOAA weather station GRAND VIEW 4 NW, ID US (USC00103760), 1991–2020 climate normals. It's the nearest station for 1 zip code, all within 7 miles:

83624

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