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

Planting zone for 62810 — Belle Rive, IL

ZIP code 62810 (Belle Rive, Jefferson County) is in USDA zone 6b: the coldest winter night averages −5 to 0 °F. The median last spring frost is April 11 and the first fall frost October 22.

Where ZIP 62810 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 11
First frostOct 22
2012 zone6b

Same zone as on the 2012 map. 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 Belle Rive, IL…

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 Belle Rive, IL

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 26only 10% chance of frost after
First fall frostOctober 22median — 10% chance by Oct 9
Growing season193 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 1 and returns around November 1.

From the NOAA station Mt Vernon 3 Ne, IL — 12 miles away, elevation 489 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 62810

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 · Aug 27 – Sep 10
GarlicPlant cloves · Oct 8 – Nov 12
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 11) and first fall frost (Oct 22) 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 62810 came on Mar 3 — 13 days earlier than the 1991–2020 average (Mar 16).

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 Belle Rive, IL

The soil mapped at the center of ZIP 62810 is Schuline — silt loam, well drained.

TextureSilt loama good balance for most vegetables
pH7.0neutral; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter1.25%low — add compost
Hydrologic groupCwater soaks in slowly
Farmland classprime farmlandUSDA classification

Map unit: Schuline silt loam, 1 to 5 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 62810; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Belle Rive, IL

Summer high86 °Faverage high, July
Winter low22 °Faverage low, January
Hot days21days a year at 90 °F or more
Freezing nights108nights a year at 32 °F or less
Growing degree days3,832base 50 °F — the season’s usable heat
Longest day14 h 49 mindaylight on June 21
Shortest day9 h 30 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation47 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 22 °F 39°22° JanFebruary: average high 44 °F, low 25 °F 44°25° FebMarch: average high 54 °F, low 34 °F 54°34° MarApril: average high 65 °F, low 44 °F 65°44° AprMay: average high 74 °F, low 55 °F 74°55° MayJune: average high 82 °F, low 64 °F 82°64° JunJuly: average high 86 °F, low 67 °F 86°67° JulAugust: average high 85 °F, low 65 °F 85°65° AugSeptember: average high 79 °F, low 57 °F 79°57° SepOctober: average high 68 °F, low 45 °F 68°45° OctNovember: average high 54 °F, low 34 °F 54°34° NovDecember: average high 43 °F, low 26 °F 43°26° Dec

Precipitation by month inches

0″2″4″6″January: 3.06 in precipitation 3.1 JanFebruary: 2.65 in precipitation 2.6 FebMarch: 3.97 in precipitation 4.0 MarApril: 5.25 in precipitation 5.3 AprMay: 6.08 in precipitation 6.1 MayJune: 4.66 in precipitation 4.7 JunJuly: 3.61 in precipitation 3.6 JulAugust: 3.51 in precipitation 3.5 AugSeptember: 3.55 in precipitation 3.5 SepOctober: 3.77 in precipitation 3.8 OctNovember: 3.66 in precipitation 3.7 NovDecember: 3.18 in precipitation 3.2 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Mt Vernon 3 Ne, IL (12 mi away); precipitation: Belle Rive 1.7 Nne, IL (4 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 6b.

628726b
Opdyke, IL · 6 mi
628466b
Ina, IL · 7 mi
628286b
Dahlgren, IL · 8 mi
628366b
Ewing, IL · 8 mi
628166b
Bonnie, IL · 10 mi
628606b
Macedonia, IL · 11 mi
628146b
Bluford, IL · 12 mi
628976b
Whittington, IL · 12 mi

Illinois planting zones →

Questions about 62810

What planting zone is ZIP code 62810?

ZIP code 62810 (Belle Rive, IL) 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 Belle Rive, IL?

The median last spring frost (32 °F) near 62810 is April 11; after April 26 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Mt Vernon 3 Ne station.

When is the first frost in Belle Rive, IL?

The median first fall frost near 62810 is October 22, giving a median frost-free growing season of 193 days.

When should I plant tomatoes in 62810?

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 62810 get?

About 47 inches of precipitation a year (NOAA 1991–2020 normals, Belle Rive 1.7 Nne station).

How hot do summers get in Belle Rive, IL?

The average high peaks at 86 °F in July, with about 21 days a year at 90 °F or more.

What kind of soil does 62810 have?

The USDA soil survey maps Schuline at the center of ZIP 62810: silt loam, well drained, pH about 7.0 (neutral).

Did spring come early in Belle Rive, IL in 2026?

Spring leaf-out near 62810 came on Mar 3 in 2026, 13 days earlier than the 1991–2020 average (Mar 16), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Belle Rive, IL?

Intermediate onions: the longest day near 62810 is 14 h 49 min, so day-neutral types bulb best; long-day varieties may not bulb fully.