Frost dates for Clarksburg Benedum Airport, West Virginia
Half of years have their last spring frost by April 18, 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 1
- 3 years in 10
- April 26
- 2 years in 5
- April 22
- Half of years (the median)
- April 18
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 22
- Half of years (the median)
- October 24
- Growing season
- about 188 days
- Hardiness zone nearby
- 6b
- Summer days
- a usual high of about 29 °C84 °F
- Lettuce and spinach run to seed
- May 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 ~6 °C43 °F · low ~-4 °C25 °F · rain ~84 mm3.3 in
- February
- high ~8 °C46 °F · low ~-3 °C27 °F · rain ~80 mm3.1 in
- March
- high ~13 °C55 °F · low ~1 °C33 °F · rain ~92 mm3.6 in
- April
- high ~20 °C68 °F · low ~6 °C43 °F · rain ~99 mm3.9 in
- May
- high ~24 °C76 °F · low ~11 °C52 °F · rain ~108 mm4.2 in
- June
- high ~28 °C83 °F · low ~16 °C60 °F · rain ~115 mm4.5 in
- July
- high ~30 °C85 °F · low ~18 °C64 °F · rain ~137 mm5.4 in
- August
- high ~29 °C85 °F · low ~17 °C63 °F · rain ~92 mm3.6 in
- September
- high ~26 °C79 °F · low ~13 °C55 °F · rain ~89 mm3.5 in
- October
- high ~20 °C68 °F · low ~7 °C44 °F · rain ~77 mm3 in
- November
- high ~13 °C56 °F · low ~2 °C35 °F · rain ~80 mm3.2 in
- December
- high ~8 °C47 °F · low ~-2 °C29 °F · rain ~86 mm3.4 in
Where these numbers come from
NOAA NCEI 1991–2020 Climate Normals, the Clarksburg Benedum Airport station (listed by NOAA as Clarksburg Benedum Ap, USW00003802), at 39.30, -80.23. 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
26238, 26301, 26323, 26330, 26347, 26349, 26361, 26366, 26369, 26378, 26385, 26404…
+7 moreShow fewer
26408, 26422, 26424, 26431, 26435, 26438, 26451.
Nearby stations
The nearest stations and how their last-frost dates compare. Together they show how frost varies across your area.
- Burton, WV, last frost by May 4
- Lake Lynn, WV, last frost by April 25
- Gassaway, WV, last frost by April 20
- Confluence 1 SW Dam, PA, last frost by April 30
- Washington 3 NE, PA, last frost by April 24
- Charleroi Lock, PA, last frost by April 13
Other stations in West Virginia.
- Spencer, WV, last frost by April 30
- Mt Nebo 1 S, WV, last frost by May 5
- London Locks, WV, last frost by April 7
- Charleston, WV, last frost by April 23
- Beckley Va Hospital, WV, last frost by May 6
- Hamlin, WV, last frost by April 23
- Oceana 2 SE, WV, last frost by April 22
- Logan, WV, last frost by April 8
When do I plant? · Where the dates come from
More ways Milpa can help
When do I plant? · What grows well together? · Plan my garden · What can I plant now? · Something wrong in the garden? · Keep a garden diary · Heard a tip?