Frost dates for Lehighton 1 SSW, Pennsylvania
Half of years have their last spring frost by April 21, but 1 year in 10 still frosts after May 9.
A frost date is really a percentile from 30 years of records at a nearby weather station: in about half of years a frost still comes after the median date. Both numbers are below, so you can choose the risk yourself.
The odds
Last spring frost
How often a frost still comes on or after each date.
- 1 year in 10
- May 9
- 1 year in 5
- May 2
- 3 years in 10
- April 28
- 2 years in 5
- April 24
- Half of years (the median)
- April 21
First fall freeze
How often the first freeze comes on or before each date.
- 1 year in 10
- October 7
- 1 year in 5
- October 12
- 3 years in 10
- October 17
- 2 years in 5
- October 20
- Half of years (the median)
- October 23
- Growing season
- about 184 days
- Hardiness zones nearby
- 6b, 7a
- Summer days
- a usual high of about 26 °C80 °F
- Lettuce and spinach run to seed
- June to August, in hot, long days (how we know)
Summer and rain
A growing garden needs about 25 mm1 in of water a week, rain and watering together. Here is what a normal month brings.
Month by month
- January
- high ~2 °C36 °F · low ~-7 °C19 °F · rain ~96 mm3.8 in
- February
- high ~4 °C38 °F · low ~-6 °C21 °F · rain ~74 mm2.9 in
- March
- high ~8 °C47 °F · low ~-2 °C28 °F · rain ~99 mm3.9 in
- April
- high ~16 °C61 °F · low ~3 °C38 °F · rain ~98 mm3.9 in
- May
- high ~21 °C71 °F · low ~9 °C48 °F · rain ~108 mm4.2 in
- June
- high ~25 °C78 °F · low ~14 °C57 °F · rain ~131 mm5.1 in
- July
- high ~28 °C82 °F · low ~17 °C62 °F · rain ~118 mm4.6 in
- August
- high ~27 °C80 °F · low ~16 °C60 °F · rain ~123 mm4.9 in
- September
- high ~23 °C73 °F · low ~12 °C53 °F · rain ~142 mm5.6 in
- October
- high ~16 °C62 °F · low ~5 °C41 °F · rain ~120 mm4.7 in
- November
- high ~10 °C50 °F · low ~0 °C32 °F · rain ~98 mm3.9 in
- December
- high ~4 °C40 °F · low ~-4 °C24 °F · rain ~111 mm4.4 in
Where these numbers come from
NOAA NCEI 1991–2020 Climate Normals, the Lehighton 1 SSW station (listed by NOAA as Lehighton 1SSW, USC00364934), at 40.82, -75.70. These are that station’s own records, unshifted. The further your garden is from it, the less exactly they describe your ground. The planner finds the nearest station to your garden and lowers its confidence with distance, so no number is presented as if it were measured in your garden.
Cold air also pools in low ground on the clear, still nights when frost happens, so a hollow can freeze while a slope a few hundred feet away does not. No table can know that about your garden. A few seasons of your own logged frosts can.
ZIP codes nearest this station
18030, 18035, 18037, 18038, 18053, 18058, 18059, 18067, 18071, 18079, 18080, 18086…
+14 moreShow fewer
18088, 18211, 18212, 18216, 18218, 18229, 18232, 18235, 18240, 18244, 18250, 18255, 18331, 18333.
Nearby stations
The nearest stations and how their last-frost dates compare. Together they show how frost varies across your area.
- Rodale Rsch Center, PA, last frost by April 26
- Mahanoy City 2 N, PA, last frost by April 30
- Phillipsburg-Easton Brg, NJ, last frost by April 18
- Mt Pocono Mountains Airport, PA, last frost by May 6
- Wilkes-Barre International Airport, PA, last frost by April 23
- Willow Grove Naval Air Station, PA, last frost by April 11
Other stations in Pennsylvania.
- Lancaster Airport, PA, last frost by April 18
- Selinsgrove 2 S, PA, last frost by April 25
- Pleasant Mt 1 W, PA, last frost by May 14
- Phila Franklin Inst, PA, last frost by March 30
- Philadelphia International Airport, PA, last frost by April 2
- Middletown Harrisburg International Airport, PA, last frost by April 9
- Carlisle Wtp, PA, last frost by April 23
- Shippensburg, PA, last frost by April 19
When do I plant? · Where the dates come from
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