Granbury, Texas · field elev 835 ft
Density Altitude at Granbury Regional (KGDJ)
Granbury Regional sits at 835 ft, and even a typical July afternoon (97 °F) only lifts density altitude to about 3,397 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 | 43.8 | 36 ft | 56.8 | 905 ft |
| February | 48.6 | 360 ft | 61.8 | 1,231 ft |
| March | 56.5 | 885 ft | 69.3 | 1,714 ft |
| April | 63.9 | 1,367 ft | 76.5 | 2,170 ft |
| May | 72.3 | 1,905 ft | 83.4 | 2,599 ft |
| June | 80.7 | 2,432 ft | 91.6 | 3,101 ft |
| July | 85.1 | 2,704 ft | 96.5 | 3,397 ft |
| August | 84.1 | 2,643 ft | 96.1 | 3,373 ft |
| September | 77.0 | 2,201 ft | 89.3 | 2,961 ft |
| October | 65.6 | 1,477 ft | 78.6 | 2,301 ft |
| November | 54.4 | 746 ft | 67.1 | 1,573 ft |
| December | 45.7 | 165 ft | 58.3 | 1,003 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 KGDJ
DENSITY ALTITUDE
Field elevation 835 ft — the air behaves like 3,427 ft.
- PRESSURE ALT
- 836 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 Texas fields
- F78 — Horseshoe Bend
Weatherford · elev 715 ft
- 20T — Aresti Aerodrome
Godley · elev 985 ft
- 50F — Bourland Field
Fort Worth · elev 873 ft
- KWEA — Parker County
Weatherford · elev 991 ft
- KCPT — Cleburne Regional
Cleburne · elev 854 ft
- KSEP — Stephenville Clark Regional
Stephenville · elev 1,321 ft
- KMWL — Mineral Wells Regional
Mineral Wells · elev 974 ft
- 9F9 — Sycamore Strip
Fort Worth · elev 762 ft
Frequently asked questions
How high does density altitude get at KGDJ in summer?
On a typical July afternoon — around 97 °F at the nearest NOAA normals station — density altitude at Granbury Regional reaches roughly 3,397 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 KGDJ on an average day?
It swings with the seasons: from roughly 36 ft at the coldest month's average temperature to about 2,704 ft at the warmest month's — all from a constant field elevation of 835 ft. The month-by-month table above carries the full year.
What is the field elevation of Granbury Regional?
835 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KGDJ (ICAO) / GDJ (FAA), in Granbury, Texas.