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Sparks, NV Planting Calendar & Frost Dates

USDA hardiness zone 7a · ZIP 89436 · elevation 1328′ · NOAA & USDA data

Sparks is in USDA hardiness zone 7a (winters can dip to 0 to 5°F), with a growing season of about 157 days between the average last spring frost (May 3) and first fall frost (October 10). The warmest month is July (avg high 92.1°F); the coldest is December (avg low 24.5°F). It averages 8.4″ of precipitation a year and 6.8″ 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
7a
min temp 0 to 5°F
Last spring frost
May 3
avg (50% prob, 32°F)
First fall frost
October 10
avg (50% prob, 32°F)
Growing season
157 days
frost-free window
Warmest month
July
avg high 92.1°F

Month-by-month typical weather in Sparks

Average conditions from the NOAA/NCEI 1991–2020 U.S. Climate Normals at Sparks, NV (4.5 mi away). Temperatures °F, precipitation & snow in inches.

MonthAvg highAvg lowMeanPrecip (in)Snow (in)
January 48.2 24.7 36.5 1.3 2.2
February 52.9 27.4 40.2 1 1
March 59.7 32 45.8 0.9 1
April 65 36.3 50.7 0.5 0.1
May 73.9 43.1 58.5 0.7 0
June 83.9 49.4 66.7 0.4 0
July 92.1 55.4 73.7 0.4 0
August 90.8 53.3 72 0.3 0
September 83.6 46.1 64.9 0.2 0
October 71.6 36.5 54 0.9 0
November 57.2 29.2 43.2 0.7 0.8
December 47 24.5 35.8 1.1 1.7

What to plant when in Sparks

CropSeasonWhat to do & when
TomatoeswarmStart seeds indoors: March 22 · Transplant out: May 10
PepperswarmStart seeds indoors: March 8 · Transplant out: May 17
CucumberswarmDirect sow: May 10
Zucchini / squashwarmDirect sow: May 10
Bush beanswarmDirect sow: May 10
Sweet cornwarmDirect sow: May 10
BasilwarmTransplant out: May 10
PeascoolSow (spring): March 29 · Sow (fall): August 15
SpinachcoolSow (spring): March 22 · Sow (fall): August 15
LettucecoolSow (spring): April 5 · Sow (fall): August 15
KalecoolTransplant (spring): April 12 · Sow (fall): August 1
BroccolicoolTransplant (spring): April 19
CarrotscoolSow (spring): April 12 · Sow (fall): August 1
OnionscoolTransplant (spring): April 5
PotatoescoolPlant seed potatoes: April 19
RadishescoolSow (spring): April 5 · Sow (fall): August 29

Dates are computed from Sparks'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 Nevada

Reno, NVCarson City, NVNorth Las Vegas, NVLas Vegas, NVHenderson, NV

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 — Spanish Springs, NV, 1.4 mi (confidence: high). Monthly weather normals: Sparks, NV, 4.5 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.