Carrabelle, Florida · field elev 20 ft
Density Altitude at Carrabelle-Thompson (X13)
Carrabelle-Thompson sits at 20 ft, and even a typical July afternoon (92 °F) only lifts density altitude to about 2,122 ft — heat still trims performance, but the field rarely turns high-and-hot.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 51.7 | −442 ft | 64.3 | 390 ft |
| February | 54.7 | −242 ft | 67.0 | 565 ft |
| March | 60.6 | 148 ft | 73.4 | 975 ft |
| April | 67.4 | 591 ft | 80.3 | 1,411 ft |
| May | 73.9 | 1,007 ft | 85.7 | 1,747 ft |
| June | 79.6 | 1,367 ft | 88.9 | 1,944 ft |
| July | 81.9 | 1,511 ft | 91.8 | 2,122 ft |
| August | 81.8 | 1,505 ft | 91.2 | 2,085 ft |
| September | 78.0 | 1,266 ft | 87.6 | 1,864 ft |
| October | 70.1 | 764 ft | 82.2 | 1,530 ft |
| November | 60.0 | 109 ft | 72.9 | 943 ft |
| December | 54.1 | −282 ft | 65.8 | 487 ft |
▲ above 5,000 ft · ⚠ above 8,000 ft. These are planning references at standard pressure and dry air — afternoon humidity and low pressure both push the real number higher. Run today's values below.
Run today’s numbers for X13
DENSITY ALTITUDE
Field elevation 20 ft — the air behaves like 2,134 ft.
- PRESSURE ALT
- 21 ft
- ISA DEVIATION
- —
- RULE-OF-THUMB DA
- —
- AIR DENSITY INDEX
- —
- AIR DENSITY
- —
- WATER · GRAINS/LB
- —
For training and reference · verify with official sources and your POH before flight · no tool on this site renders a go / no-go judgment
Nearby Florida fields
- F47 — St George Island
Apalachicola · elev 3 ft
- 2J0 — Wakulla County
Panacea · elev 11 ft
- KAAF — Apalachicola Regional-Cleve Randolph Field
Apalachicola · elev 20 ft
- A51 — Costin
Port St Joe · elev 13 ft
- KTLH — Tallahassee International
Tallahassee · elev 83 ft
- F95 — Calhoun County
Blountstown · elev 121 ft
- 2J9 — Quincy Municipal
Quincy · elev 221 ft
- KFPY — Perry-Foley
Perry · elev 44 ft
Frequently asked questions
How high does density altitude get at X13 in summer?
On a typical July afternoon — around 92 °F at the nearest NOAA normals station — density altitude at Carrabelle-Thompson reaches roughly 2,122 ft at standard pressure. Hotter-than-normal days, low pressure, and humidity all push it higher, so run the day's actual numbers before flying.
What is the density altitude at X13 on an average day?
It swings with the seasons: from roughly −442 ft at the coldest month's average temperature to about 1,511 ft at the warmest month's — all from a constant field elevation of 20 ft. The month-by-month table above carries the full year.
What is the field elevation of Carrabelle-Thompson?
20 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is X13 (FAA), in Carrabelle, Florida.