Bally, Pennsylvania · field elev 500 ft
Density Altitude at Butter Valley Golf Port (7N8)
Butter Valley Golf Port sits at 500 ft, and even a typical July afternoon (85 °F) only lifts density altitude to about 2,290 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 | 28.8 | −1,419 ft | 37.6 | −805 ft |
| February | 30.7 | −1,286 ft | 40.6 | −598 ft |
| March | 38.9 | −715 ft | 49.3 | −8 ft |
| April | 50.4 | 66 ft | 62.0 | 831 ft |
| May | 60.1 | 707 ft | 71.7 | 1,456 ft |
| June | 68.9 | 1,277 ft | 80.3 | 1,998 ft |
| July | 73.7 | 1,583 ft | 85.0 | 2,290 ft |
| August | 71.7 | 1,456 ft | 83.3 | 2,184 ft |
| September | 65.0 | 1,026 ft | 76.7 | 1,772 ft |
| October | 53.1 | 246 ft | 64.9 | 1,020 ft |
| November | 42.9 | −441 ft | 53.3 | 259 ft |
| December | 33.7 | −1,075 ft | 42.5 | −468 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 7N8
DENSITY ALTITUDE
Field elevation 500 ft — the air behaves like 2,290 ft.
- PRESSURE ALT
- 501 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
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Frequently asked questions
How high does density altitude get at 7N8 in summer?
On a typical July afternoon — around 85 °F at the nearest NOAA normals station — density altitude at Butter Valley Golf Port reaches roughly 2,290 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 7N8 on an average day?
It swings with the seasons: from roughly −1,419 ft at the coldest month's average temperature to about 1,583 ft at the warmest month's — all from a constant field elevation of 500 ft. The month-by-month table above carries the full year.
What is the field elevation of Butter Valley Golf Port?
500 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 7N8 (FAA), in Bally, Pennsylvania.