Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated

Planting zone for 75140 — Grand Saline, TX

ZIP code 75140 (Grand Saline, Van Zandt County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is March 20 and the first fall frost November 11.

Where ZIP 75140 is

Outlined: the ZIP code area · tap the map for the zone at any spot · scroll or pinch to zoom

Not the official USDA Plant Hardiness Zone Map. Zones come from the 2023 USDA hardiness-zone data by the PRISM Group, Oregon State University; we re-mapped and recolored them. The official map is at planthardiness.ars.usda.gov.

Zone8b15 to 20 °F
Coldest night−9.4 to −6.7 °C
Last frostMar 20
First frostNov 11
2012 zone8a

Was 8a on the 2012 map — half a zone warmer now. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 8b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Grand Saline, TX…

Forecast data: National Weather Service (api.weather.gov), public domain. This is not a warning service — for official frost and freeze warnings see weather.gov.

Frost dates in Grand Saline, TX

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 20median — 50% chance of a later frost
Safe for tender plantsApril 10only 10% chance of frost after
First fall frostNovember 11median — 10% chance by Oct 25
Growing season235 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 6 and returns around November 24.

From the NOAA station Mineola, TX — 12 miles away, elevation 367 ft. NOAA NCEI U.S. Climate Normals 1991–2020, 32 °F threshold. Low spots and valleys can freeze later in spring than the station.

When to plant vegetables in 75140

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 6 – Feb 20
SpinachSow outdoors · Feb 6 – Feb 27
Broccoli, cabbageStart indoors · Jan 9 – Jan 23
Broccoli, cabbageTransplant · Feb 27 – Mar 13
Onion setsPlant outdoors · Feb 20 – Mar 6
PotatoesPlant outdoors · Feb 27 – Mar 13
LettuceSow outdoors · Feb 20 – Mar 6
Carrots, beetsSow outdoors · Feb 27 – Mar 13
TomatoesStart indoors · Jan 23 – Feb 6
TomatoesTransplant · Mar 27 – Apr 10
Peppers, eggplantStart indoors · Jan 9 – Jan 23
Peppers, eggplantTransplant · Apr 3 – Apr 17
BeansSow outdoors · Mar 27 – Apr 10
Sweet cornSow outdoors · Mar 27 – Apr 10
Cucumbers, squashSow outdoors · Mar 27 – Apr 10
Fall lettuce, spinachSow outdoors · Sep 16 – Sep 30
GarlicPlant cloves · Oct 28 – Dec 2
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 20) and first fall frost (Nov 11) with the rules of thumb U.S. extension services publish. Cool-season crops take a light frost; warm-season crops do best once the soil is above about 60 °F.

When spring arrived in 2026

In 2026, spring leaf-out near 75140 came on Feb 7 — about the same time as the 1991–2020 average (Feb 6).

JanFebMarAprMayJun

The Spring Index marks the day when accumulated warmth is enough for lilac and honeysuckle to leaf out — a widely used signal that the growing season has started. Source: USA National Phenology Network, www.usanpn.org — Spring Indices, first leaf, 2026 (data as of 2026-09-08) and 30-year average 1991–2020 (CC BY 4.0).

Soil in Grand Saline, TX

The soil mapped at the center of ZIP 75140 is Woodtell — loam, well drained.

TextureLoama good balance for most vegetables
pH5.5moderately acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter1.5%low — add compost
Hydrologic groupDwater soaks in very slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Woodtell loam, 5 to 12 percent slopes.

Soil Survey Staff, Natural Resources Conservation Service, USDA. Soil Survey Geographic (SSURGO) Database, via Soil Data Access, accessed 2026-10-29. The soil at the center point of ZIP 75140; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Grand Saline, TX

Summer high94 °Faverage high, August
Winter low33 °Faverage low, January
Hot days99days a year at 90 °F or more
Freezing nights52nights a year at 32 °F or less
Growing degree days5,833base 50 °F — the season’s usable heat
Longest day14 h 18 mindaylight on June 21
Shortest day10 h 00 mindaylight on December 21
Onions to growShort-daysummer days stay under about 14 h 20 min, so long-day varieties won’t bulb
Precipitation46.5 inper year, rain and melted snow
Snowfall1 inper year

Average high and low, by month

20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 57 °F, low 33 °F 57°33° JanFebruary: average high 61 °F, low 38 °F 61°38° FebMarch: average high 68 °F, low 44 °F 68°44° MarApril: average high 75 °F, low 51 °F 75°51° AprMay: average high 82 °F, low 61 °F 82°61° MayJune: average high 89 °F, low 69 °F 89°69° JunJuly: average high 93 °F, low 71 °F 93°71° JulAugust: average high 94 °F, low 71 °F 94°71° AugSeptember: average high 88 °F, low 63 °F 88°63° SepOctober: average high 78 °F, low 52 °F 78°52° OctNovember: average high 67 °F, low 43 °F 67°43° NovDecember: average high 59 °F, low 35 °F 59°35° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″6″January: 3.67 in precipitation, 0.2 in snowfall 3.7 JanFebruary: 4.01 in precipitation, 0.3 in snowfall 4.0 FebMarch: 4.15 in precipitation, 0.1 in snowfall 4.2 MarApril: 3.80 in precipitation 3.8 AprMay: 4.68 in precipitation 4.7 MayJune: 3.53 in precipitation 3.5 JunJuly: 2.67 in precipitation 2.7 JulAugust: 2.71 in precipitation 2.7 AugSeptember: 3.73 in precipitation 3.7 SepOctober: 4.99 in precipitation 5.0 OctNovember: 3.47 in precipitation 3.5 NovDecember: 5.06 in precipitation, 0.1 in snowfall 5.1 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Mineola, TX (12 mi away); precipitation: Mineola, TX (12 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 8b.

751278b
Fruitvale, TX · 8 mi
757908b
Van, TX · 8 mi
754448b
Golden, TX · 10 mi
754108b
Alba, TX · 11 mi
751178b
Edgewood, TX · 11 mi
751038b
Canton, TX · 14 mi
757738b
Mineola, TX · 14 mi
757548b
Ben Wheeler, TX · 16 mi

Texas planting zones →

Questions about 75140

What planting zone is ZIP code 75140?

ZIP code 75140 (Grand Saline, TX) is in USDA hardiness zone 8b on the 2023 map: the coldest night of an average winter reaches 15 to 20 °F (−9.4 to −6.7 °C).

When is the last frost in Grand Saline, TX?

The median last spring frost (32 °F) near 75140 is March 20; after April 10 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Mineola station.

When is the first frost in Grand Saline, TX?

The median first fall frost near 75140 is November 11, giving a median frost-free growing season of 235 days.

When should I plant tomatoes in 75140?

Start tomato seeds indoors around Jan 23 – Feb 6 and set transplants outside around Mar 27 – Apr 10, one to three weeks after the median last frost.

How much rain and snow does 75140 get?

About 46.5 inches of precipitation a year and 1 inches of snowfall (NOAA 1991–2020 normals, Mineola station).

How hot do summers get in Grand Saline, TX?

The average high peaks at 94 °F in August, with about 99 days a year at 90 °F or more.

What kind of soil does 75140 have?

The USDA soil survey maps Woodtell at the center of ZIP 75140: loam, well drained, pH about 5.5 (moderately acidic).

Did spring come early in Grand Saline, TX in 2026?

Spring leaf-out near 75140 came on Feb 7 in 2026, about the same as the 1991–2020 average (Feb 6), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Grand Saline, TX?

Short-day onions: the longest day near 75140 is 14 h 18 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.

Did the zone for 75140 change?

Yes. The 2012 USDA map put 75140 in zone 8a; the 2023 map puts it in zone 8b. The newer map uses 1991–2020 data and more weather stations.