When is the last frost in Sherman, TX?

The average last spring frost (50% probability of 32°F) in Sherman is around March 14, based on NOAA/NCEI 1991–2020 normals at the Sherman, TX station (8.6 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 Sherman?

The average first fall frost in Sherman, TX is around November 19, giving roughly a 250-day frost-free growing season.

What planting zone is Sherman, TX?

Sherman is in USDA plant hardiness zone 8a (average annual extreme minimum temperature 10 to 15°F), from the 2023 USDA Plant Hardiness Zone Map.

What is the weather like in Sherman?

In Sherman, TX the warmest month is August (avg high 92.7°F) and the coldest is January (avg low 33.9°F). It averages about 44.3″ of precipitation a year.

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Sherman, TX Planting Calendar & Frost Dates

USDA hardiness zone 8a · ZIP 75090 · elevation 232′ · NOAA & USDA data

Sherman is in USDA hardiness zone 8a (winters can dip to 10 to 15°F), with a growing season of about 250 days between the average last spring frost (March 14) and first fall frost (November 19). The warmest month is August (avg high 92.7°F); the coldest is January (avg low 33.9°F). It averages 44.3″ 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 10 to 15°F

Last spring frost

March 14

avg (50% prob, 32°F)

First fall frost

November 19

avg (50% prob, 32°F)

Growing season

250 days

frost-free window

Warmest month

August

avg high 92.7°F

Month-by-month typical weather in Sherman

Average conditions from the NOAA/NCEI 1991–2020 U.S. Climate Normals at Sherman, TX (8.6 mi away). Temperatures °F, precipitation & snow in inches.

Month	Avg high	Avg low	Mean	Precip (in)	Snow (in)
January	52.6	33.9	43.2	2.5	–
February	57.1	37.2	47.1	2.8	–
March	65.2	45	55.1	4	–
April	72.6	52.8	62.7	3.9	–
May	80	61.6	70.8	5.5	–
June	88.1	69.8	78.9	4.5	–
July	92.5	73.5	83	2.9	–
August	92.7	73	82.8	2.9	–
September	85.4	66.1	75.8	3.4	–
October	75.3	55.1	65.2	4.8	–
November	63.3	44.1	53.7	3.5	–
December	54.2	36.1	45.1	3.6	–

What to plant when in Sherman

Crop	Season	What to do & when
Tomatoes	warm	Start seeds indoors: January 31 · Transplant out: March 21
Peppers	warm	Start seeds indoors: January 17 · Transplant out: March 28
Cucumbers	warm	Direct sow: March 21
Zucchini / squash	warm	Direct sow: March 21
Bush beans	warm	Direct sow: March 21
Sweet corn	warm	Direct sow: March 21
Basil	warm	Transplant out: March 21
Peas	cool	Sow (spring): February 7 · Sow (fall): September 24
Spinach	cool	Sow (spring): January 31 · Sow (fall): September 24
Lettuce	cool	Sow (spring): February 14 · Sow (fall): September 24
Kale	cool	Transplant (spring): February 21 · Sow (fall): September 10
Broccoli	cool	Transplant (spring): February 28
Carrots	cool	Sow (spring): February 21 · Sow (fall): September 10
Onions	cool	Transplant (spring): February 14
Potatoes	cool	Plant seed potatoes: February 28
Radishes	cool	Sow (spring): February 14 · Sow (fall): October 8

Dates are computed from Sherman'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 Texas

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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 — Sherman, TX, 8.6 mi (confidence: high). Monthly weather normals: Sherman, TX, 8.6 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.