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Malden, MA Planting Calendar & Frost Dates

USDA hardiness zone 6b · ZIP 02148 · elevation 4′ · NOAA & USDA data

Malden is in USDA hardiness zone 6b (winters can dip to -5 to 0°F), with a growing season of about 218 days between the average last spring frost (April 4) and first fall frost (November 9). The warmest month is July (avg high 82.1°F); the coldest is January (avg low 23.1°F). It averages 43.6″ of precipitation a year and 49.2″ 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
6b
min temp -5 to 0°F
Last spring frost
April 4
avg (50% prob, 32°F)
First fall frost
November 9
avg (50% prob, 32°F)
Growing season
218 days
frost-free window
Warmest month
July
avg high 82.1°F

Month-by-month typical weather in Malden

Average conditions from the NOAA/NCEI 1991–2020 U.S. Climate Normals at Boston Logan Intl Ap, MA (5.3 mi away). Temperatures °F, precipitation & snow in inches.

MonthAvg highAvg lowMeanPrecip (in)Snow (in)
January 36.8 23.1 29.9 3.4 14.3
February 39 24.6 31.8 3.2 14.4
March 45.5 31.1 38.3 4.2 9
April 56.4 40.8 48.6 3.6 1.6
May 66.5 50.3 58.4 3.3 0
June 76.2 59.7 68 3.9 0
July 82.1 66 74.1 3.3 0
August 80.4 65.1 72.7 3.2 0
September 73.1 58.2 65.6 3.6 0
October 62.1 47.5 54.8 4 0.2
November 51.6 37.9 44.7 3.7 0.7
December 42.2 29.2 35.7 4.3 9

What to plant when in Malden

CropSeasonWhat to do & when
TomatoeswarmStart seeds indoors: February 21 · Transplant out: April 11
PepperswarmStart seeds indoors: February 7 · Transplant out: April 18
CucumberswarmDirect sow: April 11
Zucchini / squashwarmDirect sow: April 11
Bush beanswarmDirect sow: April 11
Sweet cornwarmDirect sow: April 11
BasilwarmTransplant out: April 11
PeascoolSow (spring): February 28 · Sow (fall): September 14
SpinachcoolSow (spring): February 21 · Sow (fall): September 14
LettucecoolSow (spring): March 7 · Sow (fall): September 14
KalecoolTransplant (spring): March 14 · Sow (fall): August 31
BroccolicoolTransplant (spring): March 21
CarrotscoolSow (spring): March 14 · Sow (fall): August 31
OnionscoolTransplant (spring): March 7
PotatoescoolPlant seed potatoes: March 21
RadishescoolSow (spring): March 7 · Sow (fall): September 28

Dates are computed from Malden'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 Massachusetts

Everett, MAMedford, MAChelsea, MARevere, MASomerville, MABoston, MACambridge, MALynn, MA

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 — Boston Logan Intl Ap, MA, 5.3 mi (confidence: high). Monthly weather normals: Boston Logan Intl Ap, MA, 5.3 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.