Casselberry, FL frost dates
Frost is light and occasional here — typically a few cold nights around midwinter (about 2 a year). Cover tender plants when frost is forecast.
How Casselberry compares
- In a typical year, frost nights in Casselberry fall between January 9 and January 24. In 1 year in 10 the first frost comes as early as December 15, or the last frost as late as February 23.
- Compared with Sanford, FL, 12 km away, the last frost here is 2 days earlier than there.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | December 29 |
| 50% (median) | January 24 |
| 10% (safe for tender plants) | February 23 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | December 15 |
| 50% (median) | January 9 |
| 90% (late) | February 6 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Gardening where frost is rare
Casselberry, FL only freezes on a few winter nights, so the usual "plant after the last frost" rule doesn't apply. Heat and rainfall decide the seasons instead:
- Cool-season crops (lettuce, broccoli, peas, carrots) grow best from fall through late winter.
- Warm-season crops (tomatoes, peppers, beans, squash) do best planted in late winter to spring, and again in late summer for a fall crop — midsummer heat can stop tomatoes setting fruit.
- Heat lovers (okra, sweet potatoes, melons) can be planted through spring and early summer.
About these dates
Based on 1991–2020 NOAA climate normals for the Orlando Sanford Ap, FL weather station, 11 km away (elevation 56 ft (17 m)).
ZIP codes in Casselberry: 32707 32718 32730
Frost dates near Casselberry
- Altamonte Springs Jan 24 · Jan 9
- Winter Springs Jan 24 · Jan 9
- Longwood Jan 24 · Jan 9
- Lake Mary Jan 24 · Jan 9
- Mid Florida Jan 24 · Jan 9
- Goldenrod Jan 17 · Jan 13
- Maitland Jan 17 · Jan 13
- Oviedo Jan 24 · Jan 9
- Winter Park Jan 17 · Jan 13
- Sanford Jan 26 · Jan 12
Frequently asked questions
When is the last frost in Casselberry, FL?
The median last spring frost in Casselberry, FL is January 24. There is still about a 10% chance of frost after February 23, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Casselberry, FL?
The median first fall frost is January 9, with about a 10% chance of frost before December 15.
How long is the growing season in Casselberry, FL?
About 350 days between the median last spring frost and first fall frost.
What planting zone is Casselberry, FL?
Casselberry, FL is in USDA hardiness zone 10a.