When is the last frost in Pocatello, ID?

The average last spring frost (50% probability of 32°F) in Pocatello is around May 16, based on NOAA/NCEI 1991–2020 normals at the Pocatello 2 Ne, ID station (2 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 Pocatello?

The average first fall frost in Pocatello, ID is around October 2, giving roughly a 137-day frost-free growing season.

What planting zone is Pocatello, ID?

Pocatello is in USDA plant hardiness zone 6b (average annual extreme minimum temperature -5 to 0°F), from the 2023 USDA Plant Hardiness Zone Map.

What is the weather like in Pocatello?

In Pocatello, ID the warmest month is July (avg high 89.3°F) and the coldest is January (avg low 19.7°F). It averages about 13.5″ of precipitation a year and 63.6″ of snow.

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Pocatello, ID Planting Calendar & Frost Dates

USDA hardiness zone 6b · ZIP 83201 · elevation 1473′ · NOAA & USDA data

Pocatello is in USDA hardiness zone 6b (winters can dip to -5 to 0°F), with a growing season of about 137 days between the average last spring frost (May 16) and first fall frost (October 2). The warmest month is July (avg high 89.3°F); the coldest is January (avg low 19.7°F). It averages 13.5″ of precipitation a year and 63.6″ 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 -5 to 0°F

Last spring frost

May 16

avg (50% prob, 32°F)

First fall frost

October 2

avg (50% prob, 32°F)

Growing season

137 days

frost-free window

Warmest month

July

avg high 89.3°F

Month-by-month typical weather in Pocatello

Average conditions from the NOAA/NCEI 1991–2020 U.S. Climate Normals at Pocatello 2 Ne, ID (2 mi away). Temperatures °F, precipitation & snow in inches.

Month	Avg high	Avg low	Mean	Precip (in)	Snow (in)
January	35.9	19.7	27.8	1.1	13.5
February	40.6	22.1	31.3	1	10.5
March	50.5	28.9	39.7	1.3	8.1
April	58.2	34.2	46.2	1.4	4.8
May	68.5	42.1	55.3	1.5	0.8
June	78.5	48.9	63.7	1.1	0.1
July	89.3	57	73.2	0.6	0
August	87.7	56.1	71.9	0.9	0
September	77.1	47.6	62.4	1.2	0.1
October	61.5	37	49.3	1.1	2.3
November	46.3	27.1	36.7	1	7
December	35	19.7	27.4	1.2	16.4

What to plant when in Pocatello

Crop	Season	What to do & when
Tomatoes	warm	Start seeds indoors: April 4 · Transplant out: May 23
Peppers	warm	Start seeds indoors: March 21 · Transplant out: May 30
Cucumbers	warm	Direct sow: May 23
Zucchini / squash	warm	Direct sow: May 23
Bush beans	warm	Direct sow: May 23
Sweet corn	warm	Direct sow: May 23
Basil	warm	Transplant out: May 23
Peas	cool	Sow (spring): April 11 · Sow (fall): August 7
Spinach	cool	Sow (spring): April 4 · Sow (fall): August 7
Lettuce	cool	Sow (spring): April 18 · Sow (fall): August 7
Kale	cool	Transplant (spring): April 25 · Sow (fall): July 24
Broccoli	cool	Transplant (spring): May 2
Carrots	cool	Sow (spring): April 25 · Sow (fall): July 24
Onions	cool	Transplant (spring): April 18
Potatoes	cool	Plant seed potatoes: May 2
Radishes	cool	Sow (spring): April 18 · Sow (fall): August 21

Dates are computed from Pocatello'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 Idaho

Idaho Falls, ID Twin Falls, ID Meridian, ID Nampa, ID Caldwell, ID

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 — Pocatello 2 Ne, ID, 2 mi (confidence: high). Monthly weather normals: Pocatello 2 Ne, ID, 2 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.