Frost dates / Virginia / Norfolk

Frost dates in Norfolk, VA

The station on this page is NORFOLK NAS, VA US (USW00013750), 2.8 miles from the city point. Population in the Census 2024 estimate is 231,105.

Zone 8bUSDA average annual extreme minimum 15°F to 20°F, from ZIP 23518 (1.7 miles from the city point used on this page).

Median last 32°F is March 16. Median first 32°F is November 26. The 50% growing-season length is 255 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%	February 26	Earlier date. A last 32°F on or after this day is common.
50%	March 16	Median.
10%	April 1	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 8	Earlier date. A first 32°F on or before this day is uncommon.
50%	November 26	Median.
90%	December 17	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%	283
50%	255
90%	231

28°F threshold

	10%	50%	90%
Last, on or after	March 19	March 2	February 9
First, on or before	November 21	December 12	January 5
Season at least	311 days	286 days	258 days

36°F threshold

	10%	50%	90%
Last, on or after	April 10	March 29	March 12
First, on or before	November 1	November 14	November 29
Season at least	253 days	230 days	212 days

Station NORFOLK NAS, VA US (USW00013750). Completeness flag R, 24 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 5.2 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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Norfolk, VA

Zone 8bAverage annual extreme minimum 15°F to 20°F

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

Virginia. Nearest qualified station: NORFOLK NAS, VA US (USW00013750), 2.8 miles. Median last 32°F March 16. Median first 32°F November 26. The 50% growing-season length is 255 days.

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32°F probabilities at this station

	10%	50%	90%
Last 32°F on or after	April 1	March 16	February 26
First 32°F on or before	November 8	November 26	December 17

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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