When is the last frost in Chandler, AZ?

The average last spring frost (50% probability of 32°F) in Chandler is around February 13, based on NOAA/NCEI 1991–2020 normals at the Tempe Asu, AZ station (7.5 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 Chandler?

The average first fall frost in Chandler, AZ is around December 5, giving roughly a 298-day frost-free growing season.

What planting zone is Chandler, AZ?

Chandler is in USDA plant hardiness zone 9b (average annual extreme minimum temperature 25 to 30°F), from the 2023 USDA Plant Hardiness Zone Map.

What is the weather like in Chandler?

In Chandler, AZ the warmest month is July (avg high 105.9°F) and the coldest is December (avg low 37.7°F). It averages about 8.8″ of precipitation a year.

Home › Arizona › Chandler

Chandler, AZ Planting Calendar & Frost Dates

USDA hardiness zone 9b · ZIP 85224 · elevation 356′ · NOAA & USDA data

Chandler is in USDA hardiness zone 9b (winters can dip to 25 to 30°F), with a growing season of about 298 days between the average last spring frost (February 13) and first fall frost (December 5). The warmest month is July (avg high 105.9°F); the coldest is December (avg low 37.7°F). It averages 8.8″ of precipitation a year. 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 25 to 30°F

Last spring frost

February 13

avg (50% prob, 32°F)

First fall frost

December 5

avg (50% prob, 32°F)

Growing season

298 days

frost-free window

Warmest month

July

avg high 105.9°F

Month-by-month typical weather in Chandler

Average conditions from the NOAA/NCEI 1991–2020 U.S. Climate Normals at Tempe Asu, AZ (7.5 mi away). Temperatures °F, precipitation & snow in inches.

Month	Avg high	Avg low	Mean	Precip (in)
January	70.6	38.5	54.5	1
February	73.7	40.9	57.3	1.1
March	80.4	45.9	63.1	1
April	86.9	50.9	68.9	0.2
May	95	59.1	77.1	0.2
June	103.7	67	85.3	0.1
July	105.9	75.8	90.9	1
August	104.8	75.1	89.9	1.3
September	100.8	68.9	84.9	0.7
October	91	56.3	73.6	0.6
November	79	45.1	62	0.7
December	69.3	37.7	53.5	1

What to plant when in Chandler

Crop	Season	What to do & when
Tomatoes	warm	Start seeds indoors: January 2 · Transplant out: February 20
Peppers	warm	Start seeds indoors: December 19 · Transplant out: February 27
Cucumbers	warm	Direct sow: February 20
Zucchini / squash	warm	Direct sow: February 20
Bush beans	warm	Direct sow: February 20
Sweet corn	warm	Direct sow: February 20
Basil	warm	Transplant out: February 20
Peas	cool	Sow (spring): January 9 · Sow (fall): October 10
Spinach	cool	Sow (spring): January 2 · Sow (fall): October 10
Lettuce	cool	Sow (spring): January 16 · Sow (fall): October 10
Kale	cool	Transplant (spring): January 23 · Sow (fall): September 26
Broccoli	cool	Transplant (spring): January 30
Carrots	cool	Sow (spring): January 23 · Sow (fall): September 26
Onions	cool	Transplant (spring): January 16
Potatoes	cool	Plant seed potatoes: January 30
Radishes	cool	Sow (spring): January 16 · Sow (fall): October 24

Dates are computed from Chandler'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 Arizona

Tempe, AZ Gilbert, AZ Mesa, AZ Phoenix, AZ Scottsdale, AZ Apache Junction, AZ Maricopa, AZ Glendale, AZ

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 — Tempe Asu, AZ, 7.5 mi (confidence: high). Monthly weather normals: Tempe Asu, AZ, 7.5 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.