When is the last frost in Fresno, CA?

The average last spring frost (50% probability of 32°F) in Fresno is around January 14, based on NOAA/NCEI 1991–2020 normals at the Fresno Yosemite Intl Ap, CA station (5.7 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 Fresno?

The average first fall frost in Fresno, CA is around December 14, giving roughly a 337-day frost-free growing season.

What planting zone is Fresno, CA?

Fresno 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 Fresno?

In Fresno, CA the warmest month is July (avg high 97.7°F) and the coldest is December (avg low 39.8°F). It averages about 11″ of precipitation a year.

Home › California › Fresno

Fresno, CA Planting Calendar & Frost Dates

USDA hardiness zone 9b · ZIP 93728 · elevation 102′ · NOAA & USDA data

Fresno is in USDA hardiness zone 9b (winters can dip to 25 to 30°F), with a growing season of about 337 days between the average last spring frost (January 14) and first fall frost (December 14). The warmest month is July (avg high 97.7°F); the coldest is December (avg low 39.8°F). It averages 11″ 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

January 14

avg (50% prob, 32°F)

First fall frost

December 14

avg (50% prob, 32°F)

Growing season

337 days

frost-free window

Warmest month

July

avg high 97.7°F

Month-by-month typical weather in Fresno

Average conditions from the NOAA/NCEI 1991–2020 U.S. Climate Normals at Fresno Yosemite Intl Ap, CA (5.7 mi away). Temperatures °F, precipitation & snow in inches.

Month	Avg high	Avg low	Mean	Precip (in)
January	55.4	40.6	48	2.2
February	61.3	43.3	52.3	1.9
March	67.5	47.3	57.4	1.9
April	73.7	50.9	62.3	1
May	82.7	57.6	70.2	0.4
June	91.4	63.9	77.6	0.2
July	97.7	69.3	83.5	0
August	96.5	67.9	82.2	0
September	90.7	63.4	77.1	0.1
October	78.7	54.6	66.7	0.6
November	64.9	45.4	55.1	0.9
December	55.3	39.8	47.5	1.8

What to plant when in Fresno

Crop	Season	What to do & when
Tomatoes	warm	Start seeds indoors: December 3 · Transplant out: January 21
Peppers	warm	Start seeds indoors: November 19 · Transplant out: January 28
Cucumbers	warm	Direct sow: January 21
Zucchini / squash	warm	Direct sow: January 21
Bush beans	warm	Direct sow: January 21
Sweet corn	warm	Direct sow: January 21
Basil	warm	Transplant out: January 21
Peas	cool	Sow (spring): December 10 · Sow (fall): October 19
Spinach	cool	Sow (spring): December 3 · Sow (fall): October 19
Lettuce	cool	Sow (spring): December 17 · Sow (fall): October 19
Kale	cool	Transplant (spring): December 24 · Sow (fall): October 5
Broccoli	cool	Transplant (spring): December 31
Carrots	cool	Sow (spring): December 24 · Sow (fall): October 5
Onions	cool	Transplant (spring): December 17
Potatoes	cool	Plant seed potatoes: December 31
Radishes	cool	Sow (spring): December 17 · Sow (fall): November 2

Dates are computed from Fresno'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.

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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 — Fresno Yosemite Intl Ap, CA, 5.7 mi (confidence: high). Monthly weather normals: Fresno Yosemite Intl Ap, CA, 5.7 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.