Frost Dates for 23841 — Dinwiddie, Virginia

Half of springs at Stony Creek 2 N, VA see their last 32°F night by April 9; only one in ten is past it by March 26, and one in ten still has one after April 26. Planting tender crops after April 15 leaves a 30% risk of a frost on them, after April 19 20%, and after April 26 10%. The 17 days between the even-odds date and the one-in-ten date is narrower than at 48% of the 128 Virginia stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 29 in half of years, as early as October 16 one year in ten, and holds off past November 11 one year in ten. A hard freeze of 28°F follows 10 days later, around November 8; in spring the one-in-ten date for 28°F is April 11, 15 days before the 32°F one. The freeze-free season lasts 203 days in a typical year, longer than at 63% of the 128 Virginia stations; it reaches 222 days one year in ten and falls short of 183 one year in ten. On average 93 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 13 days longer, to about April 22, and return around October 20. Severe cold of 16°F or below comes in 96% of winters, usually between January 3 and February 11.

July is the warmest month at Stony Creek 2 N, VA, averaging 90°F by day and 68°F at night; January is the coldest at 49°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 75% of years.

Warmth for growing adds up to 4,381 growing degree days a year (base 50°F), more than at 79% of the 128 Virginia stations. 37% of them (1,639) have built up by the end of June, and July adds the most, 890. Precipitation totals 47.6 inches a year, most in July (5.2") and least in February (2.8"); May to September bring 49% of it.

The nearest other station, Petersburg, VA, 16 miles northeast of Dinwiddie, has a last frost 6 days earlier (April 3), a first frost 5 days later (November 3), a season 13 days longer.

The first measurable snow (0.1 inch or more) in Dinwiddie usually arrives around January 18, and the last of the season around February 26. Those are the middle dates across the winters of 1991–2020 at Alberta 5 N, VA, 20.1 miles away: half of years saw snow earlier, half later. Every one of those winters saw snow. The last 32°F night of spring typically comes 42 days after the last snow.

ZIP 23841 is 10 miles from Stony Creek 2 N, VA, which stands at 105 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 23841 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.