Planting zone for 07863 — Oxford, NJ
ZIP code 07863 (Oxford, Warren County) is in USDA zone 6b: the coldest winter night averages −5 to 0 °F. The median last spring frost is April 30 and the first fall frost October 18.
Where ZIP 07863 is
Outlined: the ZIP code area · tap the map for the zone at any spot · scroll or pinch to zoomNot 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.
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 ServiceLoading the forecast for Oxford, NJ…
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 Oxford, NJ
A hard freeze (28 °F) usually ends around April 16 and returns around October 29.
From the NOAA station Belvidere Brg, NJ — 7 miles away, elevation 262 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 07863
Counted from the median last spring frost (Apr 30) and first fall frost (Oct 18) 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 07863 came on Apr 1 — 5 days earlier than the 1991–2020 average (Apr 6).
Apr 62026
Apr 1
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 Oxford, NJ
The soil mapped at the center of ZIP 07863 is Parker — very gravelly sandy loam, somewhat excessively drained.
Map unit: Parker-Rock outcrop complex, 45 to 65 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 07863; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.
Climate in Oxford, NJ
Average high and low, by month
Precipitation by month inches
NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Belvidere Brg, NJ (7 mi away); precipitation: White Twp 1.7 S, NJ (4 mi away). Daylight is calculated from latitude.
Nearby ZIP codes
1 of the 8 nearest ZIP codes are in a different zone — elevation and distance from water change winter lows quickly.
Questions about 07863
What planting zone is ZIP code 07863?
ZIP code 07863 (Oxford, NJ) 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 Oxford, NJ?
The median last spring frost (32 °F) near 07863 is April 30; after May 18 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Belvidere Brg station.
When is the first frost in Oxford, NJ?
The median first fall frost near 07863 is October 18, giving a median frost-free growing season of 168 days.
When should I plant tomatoes in 07863?
Start tomato seeds indoors around Mar 5 – Mar 19 and set transplants outside around May 7 – May 21, one to three weeks after the median last frost.
How much rain and snow does 07863 get?
About 51.4 inches of precipitation a year (NOAA 1991–2020 normals, White Twp 1.7 S station).
How hot do summers get in Oxford, NJ?
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 07863 have?
The USDA soil survey maps Parker at the center of ZIP 07863: very gravelly sandy loam, somewhat excessively drained, pH about 5.0 (strongly acidic).
Did spring come early in Oxford, NJ in 2026?
Spring leaf-out near 07863 came on Apr 1 in 2026, 5 days earlier than the 1991–2020 average (Apr 6), according to the USA National Phenology Network Spring Index.
What kind of onions grow in Oxford, NJ?
Long-day onions: the longest day near 07863 is 15 h 06 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).
Did the zone for 07863 change?
Yes. The 2012 USDA map put 07863 in zone 6a; the 2023 map puts it in zone 6b. The newer map uses 1991–2020 data and more weather stations.