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

Planting zone for 02826 — Glendale, RI

ZIP code 02826 (Glendale, Providence County) is in USDA zone 6b: the coldest winter night averages −5 to 0 °F. The median last spring frost is April 22 and the first fall frost October 19.

Where ZIP 02826 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.

Zone6b−5 to 0 °F
Coldest night−20.6 to −17.8 °C
Last frostApr 22
First frostOct 19
2012 zone6a

Was 6a 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 6b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Glendale, 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 Glendale, RI

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 22median — 50% chance of a later frost
Safe for tender plantsMay 6only 10% chance of frost after
First fall frostOctober 19median — 10% chance by Oct 5
Growing season179 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 7 and returns around October 31.

From the NOAA station Woonsocket, RI — 8 miles away, elevation 112 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 02826

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 11 – Mar 25
SpinachSow outdoors · Mar 11 – Apr 1
Broccoli, cabbageStart indoors · Feb 11 – Feb 25
Broccoli, cabbageTransplant · Apr 1 – Apr 15
Onion setsPlant outdoors · Mar 25 – Apr 8
PotatoesPlant outdoors · Apr 1 – Apr 15
LettuceSow outdoors · Mar 25 – Apr 8
Carrots, beetsSow outdoors · Apr 1 – Apr 15
TomatoesStart indoors · Feb 25 – Mar 11
TomatoesTransplant · Apr 29 – May 13
Peppers, eggplantStart indoors · Feb 11 – Feb 25
Peppers, eggplantTransplant · May 6 – May 20
BeansSow outdoors · Apr 29 – May 13
Sweet cornSow outdoors · Apr 29 – May 13
Cucumbers, squashSow outdoors · Apr 29 – May 13
Fall lettuce, spinachSow outdoors · Aug 24 – Sep 7
GarlicPlant cloves · Oct 5 – Nov 9
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 22) and first fall frost (Oct 19) 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 02826 came on Apr 5 — 4 days earlier than the 1991–2020 average (Apr 9).

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 Glendale, RI

The soil mapped at the center of ZIP 02826 is Sutton — slightly decomposed plant material, moderately well drained.

TextureSlightly decomposed plant materialtop layer
DrainageModerately well drainednatural drainage class
Organic matter95%high
Hydrologic groupB/Dmoderate when drained; wet otherwise
Farmland classNot prime farmlandUSDA classification

Map unit: Sutton fine sandy loam, 0 to 8 percent slopes, very stony.

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 02826; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Glendale, RI

Summer high84 °Faverage high, July
Winter low19 °Faverage low, January
Hot days14days a year at 90 °F or more
Freezing nights129nights a year at 32 °F or less
Growing degree days2,976base 50 °F — the season’s usable heat
Longest day15 h 14 mindaylight on June 21
Shortest day9 h 07 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation51.8 inper year, rain and melted snow

Average high and low, by month

10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 38 °F, low 19 °F 38°19° JanFebruary: average high 40 °F, low 21 °F 40°21° FebMarch: average high 47 °F, low 28 °F 47°28° MarApril: average high 60 °F, low 38 °F 60°38° AprMay: average high 70 °F, low 48 °F 70°48° MayJune: average high 79 °F, low 57 °F 79°57° JunJuly: average high 84 °F, low 63 °F 84°63° JulAugust: average high 83 °F, low 62 °F 83°62° AugSeptember: average high 75 °F, low 54 °F 75°54° SepOctober: average high 64 °F, low 42 °F 64°42° OctNovember: average high 53 °F, low 33 °F 53°33° NovDecember: average high 43 °F, low 25 °F 43°25° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 4.32 in precipitation 4.3 JanFebruary: 3.67 in precipitation 3.7 FebMarch: 4.86 in precipitation 4.9 MarApril: 4.64 in precipitation 4.6 AprMay: 3.59 in precipitation 3.6 MayJune: 4.50 in precipitation 4.5 JunJuly: 3.73 in precipitation 3.7 JulAugust: 4.13 in precipitation 4.1 AugSeptember: 4.09 in precipitation 4.1 SepOctober: 5.06 in precipitation 5.1 OctNovember: 4.32 in precipitation 4.3 NovDecember: 4.91 in precipitation 4.9 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Woonsocket, RI (8 mi away); precipitation: North Smithfield 0.6 S, RI (6 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 6b.

028306b
Harrisville, RI · <1 mi
028586b
Oakland, RI · 2 mi
028396b
Mapleville, RI · 3 mi
028766b
Slatersville, RI · 3 mi
028246b
Forestdale, RI · 4 mi
015696b
Uxbridge, MA · 5 mi
015296b
Millville, MA · 5 mi
028966b
North Smithfield, RI · 5 mi

Rhode Island planting zones →

Questions about 02826

What planting zone is ZIP code 02826?

ZIP code 02826 (Glendale, RI) is in USDA hardiness zone 6b on the 2023 map: the coldest night of an average winter reaches −5 to 0 °F (−20.6 to −17.8 °C).

When is the last frost in Glendale, RI?

The median last spring frost (32 °F) near 02826 is April 22; after May 6 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Woonsocket station.

When is the first frost in Glendale, RI?

The median first fall frost near 02826 is October 19, giving a median frost-free growing season of 179 days.

When should I plant tomatoes in 02826?

Start tomato seeds indoors around Feb 25 – Mar 11 and set transplants outside around Apr 29 – May 13, one to three weeks after the median last frost.

How much rain and snow does 02826 get?

About 51.8 inches of precipitation a year (NOAA 1991–2020 normals, North Smithfield 0.6 S station).

How hot do summers get in Glendale, RI?

The average high peaks at 84 °F in July, with about 14 days a year at 90 °F or more.

What kind of soil does 02826 have?

The USDA soil survey maps Sutton at the center of ZIP 02826: slightly decomposed plant material, moderately well drained.

Did spring come early in Glendale, RI in 2026?

Spring leaf-out near 02826 came on Apr 5 in 2026, 4 days earlier than the 1991–2020 average (Apr 9), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Glendale, RI?

Long-day onions: the longest day near 02826 is 15 h 14 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 02826 change?

Yes. The 2012 USDA map put 02826 in zone 6a; the 2023 map puts it in zone 6b. The newer map uses 1991–2020 data and more weather stations.