Frost dates for Wanaque Raymond Dam, New Jersey
Half of years have their last spring frost by April 19 — but 1 year in 10 still frosts after May 3.
Every other site gives you one date. A frost date is not a date: it is a percentile from 30 years of records at a nearby weather station, and planting to the median means losing the crop in half of years. Both numbers are below, so you can choose the risk yourself.
The odds
Last spring frost
- Frost this late in 1 year in 10
- May 3
- 1 year in 5
- April 28
- 3 years in 10
- April 25
- 2 years in 5
- April 22
- Half of years (the median)
- April 19
First fall freeze
- Freeze this early in 1 year in 10
- October 9
- 1 year in 5
- October 13
- 3 years in 10
- October 16
- 2 years in 5
- October 20
- Half of years (the median)
- October 23
- Growing season
- about 188 days
- Hardiness zones nearby
- 6b, 7a
Where these numbers come from
NOAA NCEI 1991–2020 Climate Normals, station Wanaque Raymond Dam (USC00289187), at 41.04, -74.29. These are that station's own records, unshifted. The further your garden is from it, the less exactly they describe your ground — the planner resolves the nearest station to your own ZIP and lowers its confidence with distance, rather than presenting one number as if it were measured in your yard.
Cold air also pools in low ground on the clear, still nights when frost happens, so a hollow can freeze while a slope a hundred metres away does not. No table can know that about your garden. Your own logged frosts eventually can.
ZIP codes nearest this station
07004, 07005, 07034, 07035, 07045, 07046, 07054, 07058, 07082, 07401, 07403, 07405, 07410, 07417, 07420, 07421, 07423, 07430, 07432, 07435, 07436, 07438, 07440, 07442, 07444, 07446, 07450, 07452, 07456, 07457, 07458, 07463, 07465, 07470, 07480, 07481, 07495, 07502, 07505, 07506, 07508, 07512, 07514, 07522, 07524, 07624, 07630, 07640, 07641, 07642, 07645, 07647, 07648, 07649, 07652, 07656, 07675, 07676, 07677, 07801, 07834, 07842, 07849, 07856, 07866, 07878, 07885, 07950, 10901, 10918, 10925, 10931, 10950, 10952, 10954, 10965, 10970, 10974, 10975, 10977, 10979, 10983, 10987, 10990.
What can I plant here, and when? →
Nearby stations
The nearest stations, and how their last-frost dates compare — the frost gradient across your area, which no single station shows.
- Harrison, NJ — last frost by April 4
- Sussex 3 Wnw, NJ — last frost by April 30
- Yorktown Hts 1W Hcn, NY — last frost by April 25
- Somerville Somerset Ap, NJ — last frost by April 26
- Mineola, NY — last frost by April 2
- Mohonk Lake Hcn, NY — last frost by April 21
Other stations in New Jersey.
- Freehold-Marlboro, NJ — last frost by April 17
- Phillipsburg-Easton Brg, NJ — last frost by April 18
- Trenton State College, NJ — last frost by April 17
- Indian Mills 2 W Hcn, NJ — last frost by April 28
- Millville Muni Ap, NJ — last frost by April 24