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

Planting zone for 62292 — Tilden, IL

ZIP code 62292 (Tilden, Randolph County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is April 12 and the first fall frost October 22.

Where ZIP 62292 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 12
First frostOct 22
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 Tilden, 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 Tilden, IL

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 12median — 50% chance of a later frost
Safe for tender plantsApril 29only 10% chance of frost after
First fall frostOctober 22median — 10% chance by Oct 7
Growing season191 daysfrost-free, median

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

From the NOAA station Sparta 1 W, IL — 7 miles away, elevation 535 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 62292

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 1 – Mar 15
SpinachSow outdoors · Mar 1 – Mar 22
Broccoli, cabbageStart indoors · Feb 1 – Feb 15
Broccoli, cabbageTransplant · Mar 22 – Apr 5
Onion setsPlant outdoors · Mar 15 – Mar 29
PotatoesPlant outdoors · Mar 22 – Apr 5
LettuceSow outdoors · Mar 15 – Mar 29
Carrots, beetsSow outdoors · Mar 22 – Apr 5
TomatoesStart indoors · Feb 15 – Mar 1
TomatoesTransplant · Apr 19 – May 3
Peppers, eggplantStart indoors · Feb 1 – Feb 15
Peppers, eggplantTransplant · Apr 26 – May 10
BeansSow outdoors · Apr 19 – May 3
Sweet cornSow outdoors · Apr 19 – May 3
Cucumbers, squashSow outdoors · Apr 19 – May 3
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 12) 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 62292 came on Mar 2 — 12 days earlier than the 1991–2020 average (Mar 14).

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 Tilden, IL

The soil mapped at the center of ZIP 62292 is Marine — silt loam, somewhat poorly drained.

TextureSilt loama good balance for most vegetables
pH6.2slightly acidic; most vegetables like 6.0–7.0
DrainageSomewhat poorly drainedconsider raised beds
Organic matter2%moderate
Hydrologic groupC/Dslow when drained; wet otherwise
Farmland classPrime farmland if drainedUSDA classification

Map unit: Marine silt loam, 0 to 2 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 62292; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Tilden, IL

Summer high88 °Faverage high, July
Winter low22 °Faverage low, January
Hot days35days a year at 90 °F or more
Freezing nights109nights a year at 32 °F or less
Growing degree days3,944base 50 °F — the season’s usable heat
Longest day14 h 50 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
Precipitation44.6 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 40 °F, low 22 °F 40°22° JanFebruary: average high 45 °F, low 25 °F 45°25° FebMarch: average high 56 °F, low 33 °F 56°33° MarApril: average high 67 °F, low 43 °F 67°43° AprMay: average high 76 °F, low 54 °F 76°54° MayJune: average high 84 °F, low 62 °F 84°62° JunJuly: average high 88 °F, low 66 °F 88°66° JulAugust: average high 87 °F, low 64 °F 87°64° AugSeptember: average high 81 °F, low 55 °F 81°55° SepOctober: average high 70 °F, low 44 °F 70°44° OctNovember: average high 56 °F, low 35 °F 56°35° NovDecember: average high 44 °F, low 26 °F 44°26° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 2.75 in precipitation 2.8 JanFebruary: 2.44 in precipitation 2.4 FebMarch: 3.75 in precipitation 3.8 MarApril: 4.75 in precipitation 4.8 AprMay: 5.20 in precipitation 5.2 MayJune: 4.59 in precipitation 4.6 JunJuly: 4.33 in precipitation 4.3 JulAugust: 3.40 in precipitation 3.4 AugSeptember: 3.45 in precipitation 3.5 SepOctober: 3.24 in precipitation 3.2 OctNovember: 3.88 in precipitation 3.9 NovDecember: 2.81 in precipitation 2.8 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Sparta 1 W, IL (7 mi away); precipitation: Sparta 2.4 Nw, IL (6 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

622577a
Marissa, IL · 6 mi
622376b
Coulterville, IL · 6 mi
622867a
Sparta, IL · 7 mi
622556b
Lenzburg, IL · 9 mi
622686b
Oakdale, IL · 9 mi
622177a
Baldwin, IL · 9 mi
622826b
Saint Libory, IL · 10 mi
622146b
Addieville, IL · 12 mi

Illinois planting zones →

Questions about 62292

What planting zone is ZIP code 62292?

ZIP code 62292 (Tilden, IL) 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 Tilden, IL?

The median last spring frost (32 °F) near 62292 is April 12; after April 29 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Sparta 1 W station.

When is the first frost in Tilden, IL?

The median first fall frost near 62292 is October 22, giving a median frost-free growing season of 191 days.

When should I plant tomatoes in 62292?

Start tomato seeds indoors around Feb 15 – Mar 1 and set transplants outside around Apr 19 – May 3, one to three weeks after the median last frost.

How much rain and snow does 62292 get?

About 44.6 inches of precipitation a year (NOAA 1991–2020 normals, Sparta 2.4 Nw station).

How hot do summers get in Tilden, IL?

The average high peaks at 88 °F in July, with about 35 days a year at 90 °F or more.

What kind of soil does 62292 have?

The USDA soil survey maps Marine at the center of ZIP 62292: silt loam, somewhat poorly drained, pH about 6.2 (slightly acidic).

Did spring come early in Tilden, IL in 2026?

Spring leaf-out near 62292 came on Mar 2 in 2026, 12 days earlier than the 1991–2020 average (Mar 14), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Tilden, IL?

Intermediate onions: the longest day near 62292 is 14 h 50 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 62292 change?

Yes. The 2012 USDA map put 62292 in zone 6b; the 2023 map puts it in zone 7a. The newer map uses 1991–2020 data and more weather stations.