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USDA Hardiness Zone 7b

Frost Dates for 23923 — Charlotte Court House, Virginia

NOAA 1991–2020 normals from Charlotte Court House, VA (569 ft), 2 miles southwest.

Updated

In Charlotte Court House, the last spring frost (32°F) is around April 10 in half of years and has passed by April 23 in nine years out of ten. The first fall frost comes around October 30, as early as October 17 one year in ten, leaving a typical freeze-free season of 201 days (NOAA, Charlotte Court House, VA).

Last spring frost
April 10

50% probability

First fall frost
October 30

50% probability

Growing season
201 days

freeze-free, 50%

Hardiness zone
7b

5 to 10°F (-15.0 to -12.2°C) coldest night

First snow
January 16

median, 1991–2020

Last snow
February 26

median, 1991–2020

Winters with snow
77%

17 of 22 observed

Snow per year
7.7"

NOAA normal

Frost risk by date in Charlotte Court House

Half of springs at Charlotte Court House, VA see their last 32°F night by April 10; only one in ten is past it by March 27, and one in ten still has one after April 23. Planting tender crops after April 16 leaves a 30% risk of a frost on them, after April 19 20%, and after April 23 10%. The 13 days between the even-odds date and the one-in-ten date is narrower than at 91% of the 128 Virginia stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 30 in half of years, as early as October 17 one year in ten, and holds off past November 11 one year in ten. A hard freeze of 28°F follows 9 days later, around November 8; in spring the one-in-ten date for 28°F is April 13, 10 days before the 32°F one. The freeze-free season lasts 201 days in a typical year, longer than at 59% of the 128 Virginia stations; it reaches 220 days one year in ten and falls short of 180 one year in ten. On average 95 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 12 days longer, to about April 22, and return around October 21. Severe cold of 16°F or below comes in 99% of winters, usually between December 28 and February 14.

Spring: the chance of another night this cold after the date
Low90%80%70%60%50%40%30%20%10%
36°FApr 10Apr 14Apr 17Apr 20Apr 22Apr 25Apr 29May 2May 9
32°FMar 27Apr 1Apr 4Apr 7Apr 10Apr 13Apr 16Apr 19Apr 23
28°FMar 13Mar 18Mar 22Mar 26Mar 29Apr 1Apr 4Apr 7Apr 13
24°FFeb 25Mar 3Mar 8Mar 12Mar 16Mar 19Mar 23Mar 27Apr 1
20°FFeb 9Feb 16Feb 22Feb 27Mar 2Mar 6Mar 10Mar 15Mar 21
16°F99% of yrsJan 21Jan 31Feb 3Feb 8Feb 14Feb 22Feb 27Mar 3Mar 11
Fall: the chance the first night this cold has come by the date
Low10%20%30%40%50%60%70%80%90%
36°FOct 9Oct 13Oct 16Oct 19Oct 21Oct 23Oct 26Oct 28Oct 31
32°FOct 17Oct 22Oct 25Oct 28Oct 30Nov 1Nov 3Nov 7Nov 11
28°FOct 27Nov 1Nov 3Nov 6Nov 8Nov 11Nov 14Nov 18Nov 25
24°FNov 5Nov 9Nov 13Nov 17Nov 20Nov 25Nov 30Dec 4Dec 12
20°FNov 16Nov 22Nov 27Dec 2Dec 6Dec 11Dec 19Dec 26Jan 3
16°F99% of yrsDec 1Dec 9Dec 14Dec 22Dec 28Jan 1Jan 6Jan 11Jan 20

Freeze probabilities 1991–2020 at Charlotte Court House, VA, from NOAA NCEI U.S. Climate Normals. Where a temperature is reached in fewer than 99.5% of years, the dates describe only the years that reach it. Not a forecast.

Frost risk on any date in 23923 →Compare Charlotte Court House with another place →

Weather by month in Charlotte Court House

July is the warmest month at Charlotte Court House, VA, averaging 87°F by day and 67°F at night; January is the coldest at 47°F and 27°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 80% of years.

Warmth for growing adds up to 4,102 growing degree days a year (base 50°F), more than at 63% of the 128 Virginia stations. 37% of them (1,527) have built up by the end of June, and July adds the most, 848. Precipitation totals 46.7 inches a year, most in July (4.8") and least in February (3.0"); May to September bring 47% of it.

Monthly normals 1991–2020 at Charlotte Court House, VA
MonthHigh °FLow °FPrecip. in32°F nightNights ≤ 32°FGDD 50°F
Jan47273.8100%2314
Feb51293.0100%2117
Mar58364.0100%1375
Apr69453.880%3245
May76544.74%0471
Jun84634.00%0705
Jul87674.80%0848
Aug86653.90%0790
Sep80594.50%0580
Oct70463.655%2263
Nov59363.2100%1373
Dec51313.4100%2021

Monthly normals 1991–2020 at Charlotte Court House, VA (569 ft), NOAA NCEI. "32°F night": chance of at least one in the month. GDD: growing degree days, base 50°F.

Compared with the next station

The nearest other station, Keysville 2 S, VA, 9 miles southeast of Charlotte Court House, has a last frost 2 days earlier (April 8), a first frost 2 days later (November 1), a season 5 days longer.

Frost dates for 23947 (Keysville) →

When it snows in Charlotte Court House, Virginia

The first measurable snow (0.1 inch or more) in Charlotte Court House usually arrives around January 16, and the last of the season around February 26. Those are the middle dates across the winters of 1991–2020 at Charlotte Court House, VA, 1.8 miles away: half of years saw snow earlier, half later. Snow fell in 77% of those winters. The last 32°F night of spring typically comes 43 days after the last snow.

Planting calendar for 23923

What to do and when, from the 50% frost dates for Charlotte Court House, Virginia
WhenWhat to do
January 30 – February 13Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out.
February 13 – February 27Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early.
March 13 – March 27Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil.
April 10 onwardTransplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast.
by August 7Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops.
by October 16Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation.
October 30 onwardPlant garlic, mulch beds, lift tender bulbsGarlic wants a cold spell; bare soil loses structure over winter.

The weeks before and after the 50% dates are general rules of thumb, not NOAA figures; a seed packet gives the timing for each variety.

Where these figures come from

ZIP 23923 is 2 miles from Charlotte Court House, VA, which stands at 569 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 23923 in zone 7b, the band where the coldest night of the year averaged 5 to 10°F (-15.0 to -12.2°C) over 1991–2020; a zone describes winter lows, not frost dates.

Frost dates across Virginia →

Hardiness zone and temperature range: USDA Plant Hardiness Zone Map 2023 (USDA-ARS, Oregon State University), ZIP-code listing, unchanged. °C converted from °F by this site.

Thirty-year averages, not a forecast: check the forecast before planting out. How stations are matched and which pages are offered to search engines: methodology.

Other zone 7b places in Virginia