Loudoun County, Virginia · Frost dates

Loudoun County frost dates.

First-frost, last-frost, and growing-season length for Loudoun County, Virginia. Sourced from NOAA 1991-2020 Climate Normals.

Data confidence: high · USDA zone: 7a

32°F — light freeze

Last spring frost

10%
05-07
20%
04-30
50%
04-16
80%
04-05
90%
03-31

First fall frost

10%
10-07
20%
10-13
50%
10-25
80%
11-02
90%
11-07

28°F — killing freeze

Last spring freeze

10%
04-17
20%
04-12
50%
04-02
80%
03-26
90%
03-20

First fall freeze

10%
10-21
20%
10-27
50%
11-05
80%
11-14
90%
11-20

Growing season length (days, 28°F threshold)

Short year
187
Median
217
Long year
245

Source NOAA station

PURCELLVILLE, VA US

5.7 mi · 30 yrs of record (19912020) · 510 ft elev.

Data from PURCELLVILLE, VA US, 5.7 miles away with 30-year NOAA record (1991-2020).

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