When is the last frost in Minot, ND?

The average last spring frost (50% probability of 32°F) in Minot is around May 13, based on NOAA/NCEI 1991–2020 normals at the Minot Exp Stn, ND station (2.8 mi away). Half of years it falls outside that date, so wait 1–2 weeks past it before setting out frost-tender plants.

When is the first fall frost in Minot?

The average first fall frost in Minot, ND is around September 27, giving roughly a 136-day frost-free growing season.

What planting zone is Minot, ND?

Minot is in USDA plant hardiness zone 4a (average annual extreme minimum temperature -30 to -25°F), from the 2023 USDA Plant Hardiness Zone Map.

What is the weather like in Minot?

In Minot, ND the warmest month is August (avg high 79.9°F) and the coldest is January (avg low 0.7°F). It averages about 19.3″ of precipitation a year and 51.8″ of snow.

Home › North Dakota › Minot

Minot, ND Planting Calendar & Frost Dates

USDA hardiness zone 4a · ZIP 58701 · elevation 539′ · NOAA & USDA data

Minot is in USDA hardiness zone 4a (winters can dip to -30 to -25°F), with a growing season of about 136 days between the average last spring frost (May 13) and first fall frost (September 27). The warmest month is August (avg high 79.9°F); the coldest is January (avg low 0.7°F). It averages 19.3″ of precipitation a year and 51.8″ of snow, mostly mid-winter. Start cool-season crops several weeks before the last frost; wait until after it for tomatoes, peppers and other tender crops.

Hardiness zone

min temp -30 to -25°F

Last spring frost

May 13

avg (50% prob, 32°F)

First fall frost

September 27

avg (50% prob, 32°F)

Growing season

136 days

frost-free window

Warmest month

August

avg high 79.9°F

Month-by-month typical weather in Minot

Average conditions from the NOAA/NCEI 1991–2020 U.S. Climate Normals at Minot Exp Stn, ND (2.8 mi away). Temperatures °F, precipitation & snow in inches.

Month	Avg high	Avg low	Mean	Precip (in)	Snow (in)
January	18.5	0.7	9.6	0.6	8.3
February	22.4	4.2	13.3	0.6	6.9
March	34.7	15.7	25.2	0.8	7.8
April	51.4	28.5	39.9	1.2	4.4
May	65	41.4	53.2	2.8	1.8
June	73.9	52.3	63.1	3.7	0
July	79.7	56.5	68.1	2.5	0
August	79.9	54	67	2.1	0
September	69.5	44.7	57.1	1.7	0
October	53.4	31.5	42.5	1.4	3.6
November	36.1	18.1	27.1	1	8.9
December	23.3	6.4	14.9	0.8	10.1

What to plant when in Minot

Crop	Season	What to do & when
Tomatoes	warm	Start seeds indoors: April 1 · Transplant out: May 20
Peppers	warm	Start seeds indoors: March 18 · Transplant out: May 27
Cucumbers	warm	Direct sow: May 20
Zucchini / squash	warm	Direct sow: May 20
Bush beans	warm	Direct sow: May 20
Sweet corn	warm	Direct sow: May 20
Basil	warm	Transplant out: May 20
Peas	cool	Sow (spring): April 8 · Sow (fall): August 2
Spinach	cool	Sow (spring): April 1 · Sow (fall): August 2
Lettuce	cool	Sow (spring): April 15 · Sow (fall): August 2
Kale	cool	Transplant (spring): April 22 · Sow (fall): July 19
Broccoli	cool	Transplant (spring): April 29
Carrots	cool	Sow (spring): April 22 · Sow (fall): July 19
Onions	cool	Transplant (spring): April 15
Potatoes	cool	Plant seed potatoes: April 29
Radishes	cool	Sow (spring): April 15 · Sow (fall): August 16

Dates are computed from Minot's average frost dates using standard cool-/warm-season timing. They're a starting point — a cold spring, a warm microclimate, or a fast-maturing variety can shift them by a week or two.

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Gear that helps you plant on time

Some links below are Amazon affiliate links (tag theboringthin-20). If you buy through them we may earn a small commission at no extra cost to you — it keeps this almanac free. We only list generic, genuinely-useful categories.

Soil thermometer →Know when the ground is warm enough to sow — the honest signal, not the calendar.Seed-starting trays + dome →Start tomatoes & peppers indoors on the schedule below.Seedling heat mat →Warms the soil for faster, more even germination indoors.Floating row cover / frost cloth →Buys you 4–8°F to beat an early or late frost.Raised garden bed kit →Warms and drains faster in spring than in-ground soil.Garden gloves →Basic kit for transplant day.

Nearby cities in North Dakota

Bismarck, ND Grand Forks, ND Fargo, ND

Sources & method. Hardiness zone: 2023 USDA Plant Hardiness Zone Map (PRISM Climate Group, Oregon State University). Frost dates & growing season: NOAA/NCEI 1991–2020 U.S. Climate Normals, nearest station with published freeze normals — Minot Exp Stn, ND, 2.8 mi (confidence: high). Monthly weather normals: Minot Exp Stn, ND, 2.8 mi (confidence: high). ZIP centroid from U.S. Census 2023 ZCTA data. Frost dates are the 50%-probability date — half of years frost occurs outside the stated date. Nothing here is invented; where the nearest station is far, we say so. Last updated 2026-07-22.