Albion 1 N, MT Frost Dates & Growing Season

The two dates every Albion 1 N garden is planned around, plus ready-computed planting windows for the most popular crops.

Last spring frost
Jun 2
~50% chance of frost after
First fall frost
Sep 6
~50% chance of frost before
Growing season
96 days
frost-free stretch
USDA zone
≈ 5a
estimated from nearby reference
Risky (1 year in 10)MedianSafe (9 years in 10)
Last spring frost May 18 Jun 2 Jun 21
First fall frost Sep 20 Sep 6 Aug 23
Hard freeze (28°F), median last May 21 · first Sep 16

Computed from NOAA 1991–2020 climate normals at the ALBION 1 N station. "Safe" means frost past that date happens only about one year in ten. Your exact garden can still run days either way with elevation and terrain — check your own ZIP with the frost date lookup.

Planting windows for Albion 1 N

Computed from Albion 1 N's own frost dates. Click any crop for the full zone-5 growing guide — varieties, spacing, fall plantings, and more.

CropStart seeds indoorsTransplantDirect sow
🍅 Tomatoes Apr 7 – Apr 21 Jun 9 – Jun 16
🫑 Peppers Mar 24 – Apr 7 Jun 16 – Jun 23
🥬 Lettuce Apr 21 – May 5 May 5 – May 19 May 5 – Jun 2
🫛 Peas Apr 21 – May 5
🥕 Carrots May 12 – Jun 2
🥦 Broccoli Apr 14 – Apr 28 May 12 – May 26
🥬 Kale Apr 21 – May 5 May 5 – May 19 May 5 – May 19
🥒 Cucumbers May 5 – May 12 Jun 9 – Jun 16 Jun 9 – Jun 16
🥒 Zucchini May 5 – May 12 Jun 9 – Jun 16 Jun 9 – Jun 16
🫘 Green Beans (Bush) Jun 9 – Jun 16
🌽 Sweet Corn Jun 9 – Jun 16
🌿 Basil Apr 21 – May 5 Jun 9 – Jun 16 Jun 16 – Jun 23
🧄 Garlic Fall: Jul 26 – Aug 23

Want this for all 50 crops, or as a printable seed-shelf schedule? Use the planting calendar and the seed starting scheduler — both can use Albion 1 N's dates automatically after a lookup.

Reading the season in Albion 1 N

At about 96 frost-free days, Albion 1 N rewards efficiency: start warm-season crops indoors, favor short-season varieties, and lean on cold-tolerant crops — peas, kale, roots — that shrug off the shoulder-season frosts on either end.

Frequently asked questions

When is the last frost in Albion 1 N, MT?

The average last spring frost in Albion 1 N is around Jun 2, based on 1991–2020 climate normals. That's a median — about half of years see a later frost, so tender crops are safest going out a week or two after this date.

When is the first frost in Albion 1 N, MT?

The average first fall frost in Albion 1 N arrives around Sep 6. Crops still in the garden need to mature before then, and frost-tender plants need harvesting or protection as the date approaches.

How long is the growing season in Albion 1 N?

About 96 frost-free days on average, from Jun 2 to Sep 6. That favors short-season varieties and transplants for warm-season crops, with cool-season vegetables doing the heavy lifting in spring and fall.

What USDA zone is Albion 1 N in?

USDA zone 5a on the 2023 Plant Hardiness Zone Map. Note that zones describe winter cold, not frost timing — these frost dates are the numbers to plan plantings around.