Terry, Montana · field elev 2,283 ft
Density Altitude at Terry (8U6)
Terry sits at 2,283 ft, and even a typical July afternoon (88 °F) only lifts density altitude to about 4,649 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 | 17.2 | −10 ft | 28.4 | 781 ft |
| February | 22.2 | 346 ft | 33.7 | 1,148 ft |
| March | 33.8 | 1,154 ft | 46.2 | 1,993 ft |
| April | 45.0 | 1,913 ft | 57.9 | 2,761 ft |
| May | 55.4 | 2,599 ft | 68.0 | 3,408 ft |
| June | 65.4 | 3,243 ft | 78.2 | 4,045 ft |
| July | 73.3 | 3,741 ft | 88.1 | 4,649 ft |
| August | 71.5 | 3,628 ft | 87.0 | 4,583 ft |
| September | 60.5 | 2,929 ft | 75.7 | 3,890 ft |
| October | 45.9 | 1,973 ft | 59.1 | 2,839 ft |
| November | 31.9 | 1,024 ft | 43.8 | 1,833 ft |
| December | 21.0 | 261 ft | 32.2 | 1,044 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 8U6
DENSITY ALTITUDE
Field elevation 2,283 ft — the air behaves like 4,643 ft.
- PRESSURE ALT
- 2,284 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 Montana fields
- KGDV — Dawson Community
Glendive · elev 2,458 ft
- KMLS — Frank Wiley Field
Miles City · elev 2,634 ft
- 4U6 — Circle Town County
Circle · elev 2,441 ft
- KBHK — Baker Municipal
Baker · elev 2,981 ft
- 7U8 — Richey
Richey · elev 2,494 ft
- 1S3 — Tillitt Field
Forsyth · elev 2,729 ft
- 97M — Ekalaka
Ekalaka · elev 3,505 ft
- KSDY — Sidney-Richland Regional
Sidney · elev 1,985 ft
Frequently asked questions
How high does density altitude get at 8U6 in summer?
On a typical July afternoon — around 88 °F at the nearest NOAA normals station — density altitude at Terry reaches roughly 4,649 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 8U6 on an average day?
It swings with the seasons: from roughly −10 ft at the coldest month's average temperature to about 3,741 ft at the warmest month's — all from a constant field elevation of 2,283 ft. The month-by-month table above carries the full year.
What is the field elevation of Terry?
2,283 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 8U6 (FAA), in Terry, Montana.