Frost dates for E Wareham, Massachusetts
Half of years have their last spring frost by April 21, but 1 year in 10 still frosts after May 3.
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 3
- 1 year in 5
- April 30
- 3 years in 10
- April 26
- 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 11
- 1 year in 5
- October 15
- 3 years in 10
- October 18
- 2 years in 5
- October 21
- Half of years (the median)
- October 24
- Growing season
- about 186 days
- Hardiness zones nearby
- 6b, 7a
- Summer days
- a usual high of about 26 °C79 °F
- Lettuce and spinach run to seed
- July 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 ~4 °C39 °F · low ~-6 °C22 °F · rain ~106 mm4.2 in
- February
- high ~5 °C40 °F · low ~-5 °C22 °F · rain ~94 mm3.7 in
- March
- high ~8 °C46 °F · low ~-2 °C28 °F · rain ~142 mm5.6 in
- April
- high ~13 °C56 °F · low ~3 °C37 °F · rain ~116 mm4.6 in
- May
- high ~19 °C66 °F · low ~9 °C47 °F · rain ~96 mm3.8 in
- June
- high ~24 °C75 °F · low ~14 °C57 °F · rain ~94 mm3.7 in
- July
- high ~27 °C81 °F · low ~18 °C64 °F · rain ~78 mm3.1 in
- August
- high ~27 °C80 °F · low ~17 °C63 °F · rain ~91 mm3.6 in
- September
- high ~23 °C73 °F · low ~13 °C55 °F · rain ~115 mm4.5 in
- October
- high ~17 °C63 °F · low ~7 °C44 °F · rain ~126 mm5 in
- November
- high ~12 °C53 °F · low ~2 °C35 °F · rain ~113 mm4.4 in
- December
- high ~7 °C44 °F · low ~-3 °C27 °F · rain ~126 mm5 in
Where these numbers come from
NOAA NCEI 1991–2020 Climate Normals, the E Wareham station (listed by NOAA as E Wareham, USC00192451), at 41.77, -70.67. 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
02330, 02360, 02364, 02366, 02532, 02534, 02538, 02553, 02558, 02559, 02571, 02576, 02738.
Nearby stations
The nearest stations and how their last-frost dates compare. Together they show how frost varies across your area.
- Tiverton, RI, last frost by April 11
- Hingham, MA, last frost by April 25
- Providence T F Green Airport, RI, last frost by April 11
- Jamaica Plain, MA, last frost by April 19
- West Medway, MA, last frost by April 30
- N Foster 1 E, RI, last frost by April 25
Other stations in Massachusetts.
- Beverly, MA, last frost by May 4
- Lawrence, MA, last frost by April 13
- Worcester Regional Airport, MA, last frost by April 23
- Belchertown, MA, last frost by May 3
- Tully Lake, MA, last frost by April 25
- Westfield Barnes Municipal Airport, MA, last frost by May 3
- Rowe 3 NE, MA, last frost by May 14
- Lenox Dale, MA, last frost by May 7
When do I plant? · Where the dates come from
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