Frost Report

All states Montana

Frost dates for Albion, MT

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 2

typical year

Safe to plant

June 21

frost is over in 9 of 10 years

First fall frost

September 6

typical year

Growing season

95 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 5 – 19 –
Spinach – Apr 21 – May 12 Jul 12 – 26
Lettuce – May 5 – 26 Jul 12 – 26
Radishes – May 5 – Jun 16 Jul 26 – Aug 9
Onions – May 5 – 19 –
Potatoes Season usually too short. Try a quick variety or row covers.
Carrots – May 12 – Jun 2 Jun 14 – 28
Beets – May 5 – 19 Jun 28 – Jul 12
Kale Mar 24 – Apr 7 May 5 – 19 Jun 28 – Jul 12
Broccoli Mar 24 – Apr 7 May 19 – Jun 2 Jun 28 – Jul 12
Cabbage Mar 10 – 24 May 5 – 19 Jun 28 – Jul 12
Garlic – – Jul 26 – Aug 16
Warm-season crops
Tomatoes Apr 26 – May 10 Jun 21 – Jul 5 –
Peppers Season usually too short. Try a quick variety or row covers.
Cucumbers – Jun 21 – Jul 12 –
Zucchini – Jun 21 – Jul 19 –
Pumpkins Season usually too short. Try a quick variety or row covers.
Green beans – Jun 21 – 28 –
Sweet corn Season usually too short. Try a quick variety or row covers.
Basil May 17 – 31 Jun 28 – Jul 5 –

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 21June 2May 18
Fall frost before August 23September 6September 20

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 21 (June 5 in a late year), and the first one in fall around September 16.

Where these dates come from

NOAA weather station ALBION 1 N, MT US (USC00240088), 1991–2020 climate normals. It's the nearest station for 1 zip code, all within 14 miles:

59311

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