Frost dates / Virginia / Suffolk

Frost dates in Suffolk, VA

The station on this page is SUFFOLK LAKE KILBY, VA US (USC00448192), 2.9 miles from the city point. Population in the Census 2024 estimate is 103,105.

Zone 8aUSDA average annual extreme minimum 10°F to 15°F, from ZIP 23434 (2.4 miles from the city point used on this page).

Median last 32°F is March 27. Median first 32°F is November 15. The 50% growing-season length is 233 days. The green band runs from the median last frost to the median first frost. Thin ticks mark the 10%, 50%, and 90% dates.

Outside the median season Growing seasonTicks: 10%, 50%, and 90%

Last 32°F in spring

NCEI’s probability is the chance the last spring minimum of 32°F or lower occurs on or after the date.

Probability	Date	How to read it
90%	March 10	Earlier date. A last 32°F on or after this day is common.
50%	March 27	Median.
10%	April 9	Later date. A last 32°F on or after this day is uncommon.

First 32°F in fall

NCEI’s probability is the chance the first autumn minimum of 32°F or lower occurs on or before the date.

Probability	Date	How to read it
10%	November 2	Earlier date. A first 32°F on or before this day is uncommon.
50%	November 15	Median.
90%	December 1	Later date. A first 32°F on or before this day is common.

32°F growing-season length

Days between the last spring 32°F and the first autumn 32°F. The figure is a length the season meets or exceeds at that probability, from NCEI, not a subtraction done on this site.

Probability the season is at least this long	Days
10%	255
50%	233
90%	214

28°F threshold

	10%	50%	90%
Last, on or after	March 30	March 15	February 24
First, on or before	November 11	December 1	December 22
Season at least	288 days	259 days	235 days

36°F threshold

	10%	50%	90%
Last, on or after	April 20	April 6	March 23
First, on or before	October 23	November 3	November 16
Season at least	228 days	210 days	193 days

Station SUFFOLK LAKE KILBY, VA US (USC00448192). Completeness flag S, 30 years used for the 32°F dates. NCEI’s annual probability of at least one day at or below 32°F is 100%. Freeze dates are conditional on that threshold occurring. Elevation 6.7 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.

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Suffolk, VA

Zone 8aAverage annual extreme minimum 10°F to 15°F

Outside the median season Growing seasonTicks: 10%, 50%, and 90%

Virginia. Nearest qualified station: SUFFOLK LAKE KILBY, VA US (USC00448192), 2.9 miles. Median last 32°F March 27. Median first 32°F November 15. The 50% growing-season length is 233 days.

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32°F probabilities at this station

	10%	50%	90%
Last 32°F on or after	April 9	March 27	March 10
First 32°F on or before	November 2	November 15	December 1

Column order matches the NCEI file: for the last freeze, 10% is the later date and 90% is the earlier date. How to read the probabilities.

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Planting calendar

Frost dates for Virginia are above. Planting windows appear for states with a cited extension guide. The fall and seed tools use the numbers you enter and the station dates.

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