Frost dates for Cumberland 2, Maryland
Half of years have their last spring frost by April 15, but 1 year in 10 still frosts after May 5.
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 5
- 1 year in 5
- April 28
- 3 years in 10
- April 22
- 2 years in 5
- April 18
- Half of years (the median)
- April 15
First fall freeze
How often the first freeze comes on or before each date.
- 1 year in 10
- October 9
- 1 year in 5
- October 14
- 3 years in 10
- October 18
- 2 years in 5
- October 21
- Half of years (the median)
- October 24
- Growing season
- about 190 days
- Hardiness zones nearby
- 6b, 7a
- Summer days
- a usual high of about 29 °C85 °F
- Lettuce and spinach run to seed
- June to September, 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 ~-5 °C22 °F · rain ~71 mm2.8 in
- February
- high ~6 °C43 °F · low ~-4 °C24 °F · rain ~60 mm2.4 in
- March
- high ~12 °C53 °F · low ~0 °C31 °F · rain ~87 mm3.4 in
- April
- high ~19 °C66 °F · low ~5 °C41 °F · rain ~87 mm3.4 in
- May
- high ~24 °C75 °F · low ~11 °C51 °F · rain ~107 mm4.2 in
- June
- high ~28 °C83 °F · low ~16 °C60 °F · rain ~98 mm3.9 in
- July
- high ~31 °C87 °F · low ~18 °C64 °F · rain ~95 mm3.7 in
- August
- high ~30 °C85 °F · low ~17 °C63 °F · rain ~86 mm3.4 in
- September
- high ~26 °C78 °F · low ~13 °C55 °F · rain ~90 mm3.6 in
- October
- high ~19 °C67 °F · low ~6 °C43 °F · rain ~72 mm2.8 in
- November
- high ~12 °C54 °F · low ~1 °C33 °F · rain ~66 mm2.6 in
- December
- high ~6 °C43 °F · low ~-3 °C27 °F · rain ~78 mm3.1 in
Where these numbers come from
NOAA NCEI 1991–2020 Climate Normals, the Cumberland 2 station (listed by NOAA as Cumberland 2 HCN, USC00182282), at 39.64, -78.76. 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
15545, 21502, 21524, 21529, 21530, 21555, 26722, 26753, 26767.
Nearby stations
The nearest stations and how their last-frost dates compare. Together they show how frost varies across your area.
- Confluence 1 SW Dam, PA, last frost by April 30
- Johnstown Cambria County Airport, PA, last frost by April 29
- Altoona Blair County Airport, PA, last frost by April 23
- Hagerstown Washington County Airport, MD, last frost by April 7
- Lake Lynn, WV, last frost by April 25
- Purcellville, VA, last frost by April 16
Other stations in Maryland.
- Damascus 3 SSW, MD, last frost by April 14
- Dalecarlia Rsvr, MD, last frost by April 9
- Millers 4 NE, MD, last frost by April 19
- Cylburn, MD, last frost by April 2
- Baltimore Wash International Airport, MD, last frost by April 10
- Upper Marlboro 3 NNW, MD, last frost by April 9
- Mechanicsville 5 NE, MD, last frost by April 17
- Conowingo Dam, MD, last frost by April 3
When do I plant? · Where the dates come from
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