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

Planting zone for 02885 — Warren, RI

ZIP code 02885 (Warren, Bristol County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is April 11 and the first fall frost November 2.

Where ZIP 02885 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.

Zone7a0 to 5 °F
Coldest night−17.8 to −15 °C
Last frostApr 11
First frostNov 2
2012 zone6b

Was 6b 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 7a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Warren, RI…

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 Warren, RI

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 11median — 50% chance of a later frost
Safe for tender plantsApril 22only 10% chance of frost after
First fall frostNovember 2median — 10% chance by Oct 20
Growing season203 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 31 and returns around November 13.

From the NOAA station Tiverton, RI — 7 miles away, elevation 89 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 02885

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 28 – Mar 14
SpinachSow outdoors · Feb 28 – Mar 21
Broccoli, cabbageStart indoors · Jan 31 – Feb 14
Broccoli, cabbageTransplant · Mar 21 – Apr 4
Onion setsPlant outdoors · Mar 14 – Mar 28
PotatoesPlant outdoors · Mar 21 – Apr 4
LettuceSow outdoors · Mar 14 – Mar 28
Carrots, beetsSow outdoors · Mar 21 – Apr 4
TomatoesStart indoors · Feb 14 – Feb 28
TomatoesTransplant · Apr 18 – May 2
Peppers, eggplantStart indoors · Jan 31 – Feb 14
Peppers, eggplantTransplant · Apr 25 – May 9
BeansSow outdoors · Apr 18 – May 2
Sweet cornSow outdoors · Apr 18 – May 2
Cucumbers, squashSow outdoors · Apr 18 – May 2
Fall lettuce, spinachSow outdoors · Sep 7 – Sep 21
GarlicPlant cloves · Oct 19 – Nov 23
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 11) and first fall frost (Nov 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 02885 came on Apr 4 — 3 days later than the 1991–2020 average (Apr 1).

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).

Native plants for zone 7a in Rhode Island

465 plants native to the lower 48 states, recorded in Rhode Island, and rated by the USDA to survive 0 °F or colder — the bottom of zone 7a. Each links to its USDA PLANTS profile.

Trees 56

American basswood100 ft · blooms late spring · low shade tolerance · to −46 °FAmerican beech80 ft · blooms mid spring · low shade tolerance · to −44 °FAmerican chestnut115 ft · blooms early summer · high shade tolerance · to −33 °FAmerican elm120 ft · blooms early spring · medium shade tolerance · to −46 °FAmerican sycamore100 ft · blooms spring · medium shade tolerance · to −34 °Farborvitae50 ft · blooms mid spring · medium shade tolerance · to −33 °F

Shrubs 95

Allegheny serviceberry35 ft · blooms early spring · low shade tolerance · to −38 °Falternateleaf dogwood25 ft · blooms mid spring · low shade tolerance · to −47 °FAmerican black currant3 ft · blooms early spring · to −46 °FAmerican hazelnut10 ft · blooms spring · medium shade tolerance · to −33 °FAmerican holly40 ft · blooms mid spring · low shade tolerance · to −20 °FAmerican hornbeam30 ft · blooms mid spring · low shade tolerance · to −34 °F

Wildflowers & perennials 160

alkali buttercup1 ft · blooms late spring · low shade tolerance · to −38 °Falpine sweetvetch2 ft · blooms early summer · high shade tolerance · to −62 °FAmerican bur-reed3 ft · blooms indeterminate · medium shade tolerance · to −33 °FAmerican eelgrass1 ft · blooms mid summer · high shade tolerance · to −33 °FAmerican licorice4 ft · blooms late spring · medium shade tolerance · to −38 °FAmerican pokeweed7 ft · blooms mid summer · low shade tolerance · to −33 °F

Grasses 132

American beachgrass2.5 ft · blooms spring · high shade tolerance · to −28 °FAtlantic mannagrass3 ft · blooms summer · low shade tolerance · to −8 °Fawlfruit sedge4 ft · blooms mid spring · low shade tolerance · to −38 °Fbeaked spikerush3 ft · blooms late spring · high shade tolerance · to −28 °FBicknell's sedge3 ft · blooms late spring · low shade tolerance · to −38 °Fbig bluestem6 ft · blooms summer · high shade tolerance · to −46 °F

Vines 8

American bittersweet15 ft · blooms spring · low shade tolerance · to −38 °FAmerican wisteria50 ft · blooms spring · low shade tolerance · to −3 °Fdevil's darning needles15 ft · blooms mid summer · medium shade tolerance · to −38 °Friverbank grape45 ft · blooms late spring · medium shade tolerance · to −33 °Fsummer grape30 ft · blooms late spring · low shade tolerance · to −23 °Ftrumpet creeper2 ft · blooms summer · high shade tolerance · to −13 °F

Source: USDA, NRCS. 2026. The PLANTS Database (plants.usda.gov), National Plant Data Team — state distribution, native status and the “Temperature, Minimum” characteristic. Check light, moisture and soil needs before buying; local nurseries and your state native plant society can confirm what thrives in Warren, RI.

Soil in Warren, RI

The soil mapped at the center of ZIP 02885 is Udorthents — sandy loam.

TextureSandy loamdrains and warms fast; dries out and needs more feeding
pH4.8strongly acidic; most vegetables like 6.0–7.0
Organic matter3%moderate
Hydrologic groupAwater soaks in fast
Farmland classNot prime farmlandUSDA classification

Map unit: Udorthents-Urban land complex.

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 02885; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Warren, RI

Summer high85 °Faverage high, July
Winter low24 °Faverage low, January
Hot days13days a year at 90 °F or more
Freezing nights105nights a year at 32 °F or less
Growing degree days3,226base 50 °F — the season’s usable heat
Longest day15 h 13 mindaylight on June 21
Shortest day9 h 09 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation49.3 inper year, rain and melted snow

Average high and low, by month

10°20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 39 °F, low 24 °F 39°24° JanFebruary: average high 41 °F, low 25 °F 41°25° FebMarch: average high 49 °F, low 30 °F 49°30° MarApril: average high 60 °F, low 39 °F 60°39° AprMay: average high 70 °F, low 49 °F 70°49° MayJune: average high 79 °F, low 58 °F 79°58° JunJuly: average high 85 °F, low 65 °F 85°65° JulAugust: average high 84 °F, low 64 °F 84°64° AugSeptember: average high 77 °F, low 57 °F 77°57° SepOctober: average high 64 °F, low 47 °F 64°47° OctNovember: average high 53 °F, low 37 °F 53°37° NovDecember: average high 43 °F, low 30 °F 43°30° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 4.09 in precipitation 4.1 JanFebruary: 3.68 in precipitation 3.7 FebMarch: 4.96 in precipitation 5.0 MarApril: 4.41 in precipitation 4.4 AprMay: 3.42 in precipitation 3.4 MayJune: 3.89 in precipitation 3.9 JunJuly: 3.44 in precipitation 3.4 JulAugust: 3.63 in precipitation 3.6 AugSeptember: 3.87 in precipitation 3.9 SepOctober: 5.07 in precipitation 5.1 OctNovember: 4.30 in precipitation 4.3 NovDecember: 4.49 in precipitation 4.5 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Tiverton, RI (7 mi away); precipitation: Somerset 0.4 Sse, MA (6 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 7a.

028067a
Barrington, RI · 3 mi
027777a
Swansea, MA · 3 mi
028097a
Bristol, RI · 4 mi
027257a
Somerset, MA · 4 mi
027247a
Fall River, MA · 5 mi
027227a
Fall River, MA · 6 mi
029157a
Riverside, RI · 6 mi
027267a
Somerset, MA · 6 mi

Rhode Island planting zones →

Questions about 02885

What planting zone is ZIP code 02885?

ZIP code 02885 (Warren, RI) is in USDA hardiness zone 7a on the 2023 map: the coldest night of an average winter reaches 0 to 5 °F (−17.8 to −15 °C).

When is the last frost in Warren, RI?

The median last spring frost (32 °F) near 02885 is April 11; after April 22 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Tiverton station.

When is the first frost in Warren, RI?

The median first fall frost near 02885 is November 2, giving a median frost-free growing season of 203 days.

When should I plant tomatoes in 02885?

Start tomato seeds indoors around Feb 14 – Feb 28 and set transplants outside around Apr 18 – May 2, one to three weeks after the median last frost.

How much rain and snow does 02885 get?

About 49.3 inches of precipitation a year (NOAA 1991–2020 normals, Somerset 0.4 Sse station).

How hot do summers get in Warren, RI?

The average high peaks at 85 °F in July, with about 13 days a year at 90 °F or more.

What kind of soil does 02885 have?

The USDA soil survey maps Udorthents at the center of ZIP 02885: sandy loam, pH about 4.8 (strongly acidic).

Did spring come early in Warren, RI in 2026?

Spring leaf-out near 02885 came on Apr 4 in 2026, 3 days later than the 1991–2020 average (Apr 1), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Warren, RI?

Long-day onions: the longest day near 02885 is 15 h 13 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 02885 change?

Yes. The 2012 USDA map put 02885 in zone 6b; the 2023 map puts it in zone 7a. The newer map uses 1991–2020 data and more weather stations.