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

Planting zone for 77622 — Hamshire, TX

ZIP code 77622 (Hamshire, Jefferson County) is in USDA zone 9b: the coldest winter night averages 25 to 30 °F. The median last spring frost is February 18 and the first fall frost December 2.

Where ZIP 77622 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.

Zone9b25 to 30 °F
Coldest night−3.9 to −1.1 °C
Last frostFeb 18
First frostDec 2
2012 zone9a

Was 9a 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 9b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Hamshire, 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 Hamshire, TX

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostFebruary 18median — 50% chance of a later frost
Safe for tender plantsMarch 15only 10% chance of frost after
First fall frostDecember 2median — 10% chance by Nov 9
Growing season291 daysfrost-free, median

A hard freeze (28 °F) usually ends around January 29 and returns around December 29.

From the NOAA station Beaumont Rsch Center, TX — 14 miles away, elevation 26 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 77622

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Jan 7 – Jan 21
SpinachSow outdoors · Jan 7 – Jan 28
Broccoli, cabbageStart indoors · Dec 10 – Dec 24
Broccoli, cabbageTransplant · Jan 28 – Feb 11
Onion setsPlant outdoors · Jan 21 – Feb 4
PotatoesPlant outdoors · Jan 28 – Feb 11
LettuceSow outdoors · Jan 21 – Feb 4
Carrots, beetsSow outdoors · Jan 28 – Feb 11
TomatoesStart indoors · Dec 24 – Jan 7
TomatoesTransplant · Feb 25 – Mar 11
Peppers, eggplantStart indoors · Dec 10 – Dec 24
Peppers, eggplantTransplant · Mar 4 – Mar 18
BeansSow outdoors · Feb 25 – Mar 11
Sweet cornSow outdoors · Feb 25 – Mar 11
Cucumbers, squashSow outdoors · Feb 25 – Mar 11
Fall lettuce, spinachSow outdoors · Oct 7 – Oct 21
GarlicPlant cloves · Nov 18 – Dec 23
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Feb 18) and first fall frost (Dec 2) 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 77622 came on Jan 11 — 13 days earlier than the 1991–2020 average (Jan 24).

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 Hamshire, TX

The soil mapped at the center of ZIP 77622 is Morey — loam, somewhat poorly drained.

TextureLoama good balance for most vegetables
pH7.1neutral; most vegetables like 6.0–7.0
DrainageSomewhat poorly drainedconsider raised beds
Organic matter1.9%low — add compost
Hydrologic groupDwater soaks in very slowly
Farmland classFarmland of statewide importanceUSDA classification

Map unit: Morey-Levac complex, 0 to 1 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 77622; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Hamshire, TX

Summer high93 °Faverage high, August
Winter low42 °Faverage low, January
Hot days95days a year at 90 °F or more
Freezing nights13nights a year at 32 °F or less
Growing degree days7,149base 50 °F — the season’s usable heat
Longest day14 h 04 mindaylight on June 21
Shortest day10 h 13 mindaylight on December 21
Onions to growShort-daysummer days stay under about 14 h 20 min, so long-day varieties won’t bulb
Precipitation62 inper year, rain and melted snow

Average high and low, by month

30°40°50°60°70°80°90°100°32 °FJanuary: average high 62 °F, low 42 °F 62°42° JanFebruary: average high 66 °F, low 46 °F 66°46° FebMarch: average high 72 °F, low 53 °F 72°53° MarApril: average high 78 °F, low 59 °F 78°59° AprMay: average high 85 °F, low 67 °F 85°67° MayJune: average high 90 °F, low 73 °F 90°73° JunJuly: average high 92 °F, low 74 °F 92°74° JulAugust: average high 93 °F, low 74 °F 93°74° AugSeptember: average high 89 °F, low 69 °F 89°69° SepOctober: average high 81 °F, low 60 °F 81°60° OctNovember: average high 71 °F, low 51 °F 71°51° NovDecember: average high 64 °F, low 44 °F 64°44° Dec

Precipitation by month inches

0″2″4″6″8″January: 4.77 in precipitation 4.8 JanFebruary: 3.62 in precipitation 3.6 FebMarch: 3.89 in precipitation 3.9 MarApril: 3.65 in precipitation 3.6 AprMay: 5.06 in precipitation 5.1 MayJune: 7.57 in precipitation 7.6 JunJuly: 5.39 in precipitation 5.4 JulAugust: 6.43 in precipitation 6.4 AugSeptember: 6.55 in precipitation 6.5 SepOctober: 5.30 in precipitation 5.3 OctNovember: 4.68 in precipitation 4.7 NovDecember: 5.04 in precipitation 5.0 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Beaumont Rsch Center, TX (14 mi away); precipitation: Beaumont Rsch Center, TX (14 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

3 of the 8 nearest ZIP codes are in a different zone — elevation and distance from water change winter lows quickly.

777059b
Beaumont, TX · 7 mi
776619b
Stowell, TX · 8 mi
776659b
Winnie, TX · 9 mi
776419b
Port Arthur, TX · 9 mi
776299a
Nome, TX · 12 mi
776139a
China, TX · 12 mi
777139a
Beaumont, TX · 14 mi
777079b
Beaumont, TX · 15 mi

Texas planting zones →

Questions about 77622

What planting zone is ZIP code 77622?

ZIP code 77622 (Hamshire, TX) is in USDA hardiness zone 9b on the 2023 map: the coldest night of an average winter reaches 25 to 30 °F (−3.9 to −1.1 °C).

When is the last frost in Hamshire, TX?

The median last spring frost (32 °F) near 77622 is February 18; after March 15 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Beaumont Rsch Center station.

When is the first frost in Hamshire, TX?

The median first fall frost near 77622 is December 2, giving a median frost-free growing season of 291 days.

When should I plant tomatoes in 77622?

Start tomato seeds indoors around Dec 24 – Jan 7 and set transplants outside around Feb 25 – Mar 11, one to three weeks after the median last frost.

How much rain and snow does 77622 get?

About 62 inches of precipitation a year (NOAA 1991–2020 normals, Beaumont Rsch Center station).

How hot do summers get in Hamshire, TX?

The average high peaks at 93 °F in August, with about 95 days a year at 90 °F or more.

What kind of soil does 77622 have?

The USDA soil survey maps Morey at the center of ZIP 77622: loam, somewhat poorly drained, pH about 7.1 (neutral).

Did spring come early in Hamshire, TX in 2026?

Spring leaf-out near 77622 came on Jan 11 in 2026, 13 days earlier than the 1991–2020 average (Jan 24), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Hamshire, TX?

Short-day onions: the longest day near 77622 is 14 h 04 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.

Did the zone for 77622 change?

Yes. The 2012 USDA map put 77622 in zone 9a; the 2023 map puts it in zone 9b. The newer map uses 1991–2020 data and more weather stations.