Frost Dates for Annapolis, MD
In Annapolis, MD, the average last spring frost is around Mar 27 and the average first fall frost around Nov 13, for a growing season of about 234 days. For frost-tender plants, wait until Apr 9, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Annapolis Police Brks, MD weather station, 1 mile away, elevation 25 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 9 | Nov 1 |
| 20% | Apr 4 | Nov 4 |
| 30% | Mar 31 | Nov 7 |
| 40% | Mar 29 | Nov 10 |
| 50% | Mar 27 | Nov 13 |
| 60% | Mar 24 | Nov 16 |
| 70% | Mar 20 | Nov 20 |
| 80% | Mar 16 | Nov 25 |
| 90% | Mar 9 | Dec 1 |
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 7 | Nov 2 |
| Frost / freeze (32°F) | Mar 27 | Nov 13 |
| Hard freeze (28°F) | Mar 14 | Nov 28 |
Planting calendar for Annapolis
Transplant Apr 3 – Apr 17
Transplant Apr 10 – Apr 24
Transplant Apr 10 – Apr 24
Transplant Apr 3 – Apr 17
Sow or transplant Apr 3 – Apr 17
Sow or transplant Apr 3 – Apr 17
Sow or transplant Apr 10 – Apr 24
Sow or transplant Feb 27 – Mar 13
Fall sowing Sep 18 – Oct 16
Fall sowing Sep 18 – Oct 9
Fall sowing Sep 4 – Sep 18
Sow or transplant Feb 27 – Mar 13
Fall sowing Sep 4 – Oct 2
Transplant Mar 13 – Mar 27
Fall sowing Aug 21 – Sep 4
Transplant Mar 6 – Mar 20
Fall sowing Aug 21 – Sep 4
Fall sowing Aug 21 – Sep 4
Fall sowing Oct 2 – Oct 23
Fall sowing Sep 4 – Sep 18
Plant Feb 27 – Mar 13
Based on the average last frost (Mar 27) and first frost (Nov 13). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.