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

Planting zone for 76055 — Itasca, TX

ZIP code 76055 (Itasca, Hill County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is March 21 and the first fall frost November 10.

Where ZIP 76055 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 21
First frostNov 10
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 Itasca, 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 Itasca, TX

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 21median — 50% chance of a later frost
Safe for tender plantsApril 8only 10% chance of frost after
First fall frostNovember 10median — 10% chance by Oct 28
Growing season235 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 9 and returns around November 22.

From the NOAA station Hillsboro, TX — 10 miles away, elevation 551 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 76055

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 7 – Feb 21
SpinachSow outdoors · Feb 7 – Feb 28
Broccoli, cabbageStart indoors · Jan 10 – Jan 24
Broccoli, cabbageTransplant · Feb 28 – Mar 14
Onion setsPlant outdoors · Feb 21 – Mar 7
PotatoesPlant outdoors · Feb 28 – Mar 14
LettuceSow outdoors · Feb 21 – Mar 7
Carrots, beetsSow outdoors · Feb 28 – Mar 14
TomatoesStart indoors · Jan 24 – Feb 7
TomatoesTransplant · Mar 28 – Apr 11
Peppers, eggplantStart indoors · Jan 10 – Jan 24
Peppers, eggplantTransplant · Apr 4 – Apr 18
BeansSow outdoors · Mar 28 – Apr 11
Sweet cornSow outdoors · Mar 28 – Apr 11
Cucumbers, squashSow outdoors · Mar 28 – Apr 11
Fall lettuce, spinachSow outdoors · Sep 15 – Sep 29
GarlicPlant cloves · Oct 27 – Dec 1
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 21) and first fall frost (Nov 10) 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 76055 came on Feb 7 — 3 days later than the 1991–2020 average (Feb 4).

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 Itasca, TX

The soil mapped at the center of ZIP 76055 is Houston Black — clay, moderately well drained.

TextureClayholds water and nutrients; slow to drain and warm up
pH7.9alkaline; most vegetables like 6.0–7.0
DrainageModerately well drainednatural drainage class
Organic matter3%moderate
Hydrologic groupDwater soaks in very slowly
Farmland classprime farmlandUSDA classification

Map unit: Houston Black clay, 1 to 3 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 76055; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Itasca, TX

Summer high97 °Faverage high, August
Winter low34 °Faverage low, January
Hot days105days a year at 90 °F or more
Freezing nights37nights a year at 32 °F or less
Growing degree days6,434base 50 °F — the season’s usable heat
Longest day14 h 15 mindaylight on June 21
Shortest day10 h 02 mindaylight on December 21
Onions to growShort-daysummer days stay under about 14 h 20 min, so long-day varieties won’t bulb
Precipitation40.6 inper year, rain and melted snow
Snowfall1 inper year

Average high and low, by month

20°30°40°50°60°70°80°90°100°110°32 °FJanuary: average high 59 °F, low 34 °F 59°34° JanFebruary: average high 63 °F, low 38 °F 63°38° FebMarch: average high 70 °F, low 45 °F 70°45° MarApril: average high 77 °F, low 53 °F 77°53° AprMay: average high 84 °F, low 62 °F 84°62° MayJune: average high 92 °F, low 70 °F 92°70° JunJuly: average high 96 °F, low 73 °F 96°73° JulAugust: average high 97 °F, low 73 °F 97°73° AugSeptember: average high 91 °F, low 66 °F 91°66° SepOctober: average high 80 °F, low 55 °F 80°55° OctNovember: average high 69 °F, low 44 °F 69°44° NovDecember: average high 60 °F, low 36 °F 60°36° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 2.68 in precipitation, 0.1 in snowfall 2.7 JanFebruary: 3.04 in precipitation, 0.7 in snowfall 3.0❄1 FebMarch: 3.72 in precipitation 3.7 MarApril: 3.85 in precipitation, 0.1 in snowfall 3.9 AprMay: 4.47 in precipitation 4.5 MayJune: 3.71 in precipitation 3.7 JunJuly: 1.90 in precipitation 1.9 JulAugust: 2.83 in precipitation 2.8 AugSeptember: 3.45 in precipitation 3.5 SepOctober: 4.79 in precipitation 4.8 OctNovember: 3.07 in precipitation 3.1 NovDecember: 3.13 in precipitation 3.1 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Hillsboro, TX (10 mi away); precipitation: Itasca 5ssw, TX (5 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 8b.

760508b
Grandview, TX · 7 mi
766368b
Covington, TX · 8 mi
766708b
Milford, TX · 9 mi
766458b
Hillsboro, TX · 10 mi
760648b
Maypearl, TX · 12 mi
766288b
Brandon, TX · 13 mi
766278b
Blum, TX · 15 mi
760938b
Rio Vista, TX · 15 mi

Texas planting zones →

Questions about 76055

What planting zone is ZIP code 76055?

ZIP code 76055 (Itasca, 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 Itasca, TX?

The median last spring frost (32 °F) near 76055 is March 21; after April 8 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Hillsboro station.

When is the first frost in Itasca, TX?

The median first fall frost near 76055 is November 10, giving a median frost-free growing season of 235 days.

When should I plant tomatoes in 76055?

Start tomato seeds indoors around Jan 24 – Feb 7 and set transplants outside around Mar 28 – Apr 11, one to three weeks after the median last frost.

How much rain and snow does 76055 get?

About 40.6 inches of precipitation a year and 1 inches of snowfall (NOAA 1991–2020 normals, Itasca 5ssw station).

How hot do summers get in Itasca, TX?

The average high peaks at 97 °F in August, with about 105 days a year at 90 °F or more.

What kind of soil does 76055 have?

The USDA soil survey maps Houston Black at the center of ZIP 76055: clay, moderately well drained, pH about 7.9 (alkaline).

Did spring come early in Itasca, TX in 2026?

Spring leaf-out near 76055 came on Feb 7 in 2026, 3 days later than the 1991–2020 average (Feb 4), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Itasca, TX?

Short-day onions: the longest day near 76055 is 14 h 15 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.

Did the zone for 76055 change?

Yes. The 2012 USDA map put 76055 in zone 8a; the 2023 map puts it in zone 8b. The newer map uses 1991–2020 data and more weather stations.