Frost Dates for Alexandria, VA
In Alexandria, VA, the average last spring frost is around Mar 24 and the average first fall frost around Nov 18, for a growing season of about 241 days. For frost-tender plants, wait until Apr 6, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Washington Reagan Airport, VA weather station, 3 miles away, elevation 10 ft. Frost can come earlier in low spots and valleys and later near cities and large lakes.
Frost probability by date
Chance of a 32°F frost after the spring date, or before the fall date.
| Chance | Last spring frost | First fall frost |
|---|---|---|
| 10% | Apr 6 | Nov 5 |
| 20% | Apr 2 | Nov 8 |
| 30% | Mar 30 | Nov 12 |
| 40% | Mar 27 | Nov 15 |
| 50% | Mar 24 | Nov 18 |
| 60% | Mar 21 | Nov 21 |
| 70% | Mar 17 | Nov 25 |
| 80% | Mar 14 | Nov 30 |
| 90% | Mar 7 | Dec 6 |
Light frost vs. hard freeze
Average (50%) dates for each temperature. Tender plants are damaged at 36°F; most hardy crops survive until 28°F.
| Temperature | Last in spring | First in fall |
|---|---|---|
| Light frost (36°F) | Apr 3 | Nov 6 |
| Frost / freeze (32°F) | Mar 24 | Nov 18 |
| Hard freeze (28°F) | Mar 12 | Dec 3 |
Planting calendar for Alexandria
Transplant Mar 31 – Apr 14
Transplant Apr 7 – Apr 21
Transplant Apr 7 – Apr 21
Transplant Mar 31 – Apr 14
Sow or transplant Mar 31 – Apr 14
Sow or transplant Mar 31 – Apr 14
Sow or transplant Apr 7 – Apr 21
Sow or transplant Feb 24 – Mar 10
Fall sowing Sep 23 – Oct 21
Fall sowing Sep 23 – Oct 14
Fall sowing Sep 9 – Sep 23
Sow or transplant Feb 24 – Mar 10
Fall sowing Sep 9 – Oct 7
Transplant Mar 10 – Mar 24
Fall sowing Aug 26 – Sep 9
Transplant Mar 3 – Mar 17
Fall sowing Aug 26 – Sep 9
Fall sowing Aug 26 – Sep 9
Fall sowing Oct 7 – Oct 28
Fall sowing Sep 9 – Sep 23
Plant Feb 24 – Mar 10
Based on the average last frost (Mar 24) and first frost (Nov 18). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.