When is the last frost in Redding, CA?

The average last spring frost (50% probability of 32°F) in Redding is around March 3, based on NOAA/NCEI 1991–2020 normals at the Redding Muni Ap, CA station (1.3 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 Redding?

The average first fall frost in Redding, CA is around November 21, giving roughly a 261-day frost-free growing season.

What planting zone is Redding, CA?

Redding is in USDA plant hardiness zone 9a (average annual extreme minimum temperature 20 to 25°F), from the 2023 USDA Plant Hardiness Zone Map.

What is the weather like in Redding?

In Redding, CA the warmest month is July (avg high 99.9°F) and the coldest is December (avg low 37.2°F). It averages about 33.5″ of precipitation a year and 2.6″ of snow.

Home › California › Redding

Redding, CA Planting Calendar & Frost Dates

USDA hardiness zone 9a · ZIP 96002 · elevation 152′ · NOAA & USDA data

Redding is in USDA hardiness zone 9a (winters can dip to 20 to 25°F), with a growing season of about 261 days between the average last spring frost (March 3) and first fall frost (November 21). The warmest month is July (avg high 99.9°F); the coldest is December (avg low 37.2°F). It averages 33.5″ of precipitation a year and 2.6″ 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 20 to 25°F

Last spring frost

March 3

avg (50% prob, 32°F)

First fall frost

November 21

avg (50% prob, 32°F)

Growing season

261 days

frost-free window

Warmest month

July

avg high 99.9°F

Month-by-month typical weather in Redding

Average conditions from the NOAA/NCEI 1991–2020 U.S. Climate Normals at Redding Muni Ap, CA (1.3 mi away). Temperatures °F, precipitation & snow in inches.

Month	Avg high	Avg low	Mean	Precip (in)	Snow (in)
January	57.2	37.7	47.5	6	1.1
February	61	40.1	50.5	5.5	0.8
March	65.7	43.2	54.4	4.6	0
April	71.8	47	59.4	2.4	0
May	82	54.3	68.2	1.8	0
June	91.9	62.4	77.1	0.8	0
July	99.9	67	83.4	0.1	0
August	98.1	63.9	81	0.1	0
September	92.3	58.2	75.3	0.5	0
October	79.4	50.2	64.8	1.9	0
November	64.4	41.5	52.9	3.5	0
December	56	37.2	46.6	6.3	0.7

What to plant when in Redding

Crop	Season	What to do & when
Tomatoes	warm	Start seeds indoors: January 20 · Transplant out: March 10
Peppers	warm	Start seeds indoors: January 6 · Transplant out: March 17
Cucumbers	warm	Direct sow: March 10
Zucchini / squash	warm	Direct sow: March 10
Bush beans	warm	Direct sow: March 10
Sweet corn	warm	Direct sow: March 10
Basil	warm	Transplant out: March 10
Peas	cool	Sow (spring): January 27 · Sow (fall): September 26
Spinach	cool	Sow (spring): January 20 · Sow (fall): September 26
Lettuce	cool	Sow (spring): February 3 · Sow (fall): September 26
Kale	cool	Transplant (spring): February 10 · Sow (fall): September 12
Broccoli	cool	Transplant (spring): February 17
Carrots	cool	Sow (spring): February 10 · Sow (fall): September 12
Onions	cool	Transplant (spring): February 3
Potatoes	cool	Plant seed potatoes: February 17
Radishes	cool	Sow (spring): February 3 · Sow (fall): October 10

Dates are computed from Redding'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 California

Chico, CA Yuba City, CA Lincoln, CA Woodland, CA Rocklin, CA Roseville, CA West Sacramento, CA Citrus Heights, CA

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 — Redding Muni Ap, CA, 1.3 mi (confidence: high). Monthly weather normals: Redding Muni Ap, CA, 1.3 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.