Frost Dates for Hoover, AL
In Hoover, AL, the average last spring frost is around Mar 19 and the average first fall frost around Nov 8, for a growing season of about 236 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 Helena, AL weather station, 7 miles away, elevation 480 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 | Oct 26 |
| 20% | Apr 2 | Oct 31 |
| 30% | Mar 29 | Nov 2 |
| 40% | Mar 24 | Nov 5 |
| 50% | Mar 19 | Nov 8 |
| 60% | Mar 15 | Nov 11 |
| 70% | Mar 10 | Nov 15 |
| 80% | Mar 4 | Nov 20 |
| 90% | Feb 26 | Nov 29 |
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 | Oct 30 |
| Frost / freeze (32°F) | Mar 19 | Nov 8 |
| Hard freeze (28°F) | Mar 4 | Nov 22 |
Planting calendar for Hoover
Transplant Mar 26 – Apr 9
Transplant Apr 2 – Apr 16
Transplant Apr 2 – Apr 16
Transplant Mar 26 – Apr 9
Sow or transplant Mar 26 – Apr 9
Sow or transplant Mar 26 – Apr 9
Sow or transplant Apr 2 – Apr 16
Sow or transplant Feb 19 – Mar 5
Fall sowing Sep 13 – Oct 11
Fall sowing Sep 13 – Oct 4
Fall sowing Aug 30 – Sep 13
Sow or transplant Feb 19 – Mar 5
Fall sowing Aug 30 – Sep 27
Transplant Mar 5 – Mar 19
Fall sowing Aug 16 – Aug 30
Transplant Feb 26 – Mar 12
Fall sowing Aug 16 – Aug 30
Fall sowing Aug 16 – Aug 30
Fall sowing Sep 27 – Oct 18
Fall sowing Aug 30 – Sep 13
Plant Feb 19 – Mar 5
Based on the average last frost (Mar 19) and first frost (Nov 8). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.