Grangeville, Idaho · field elev 3,313 ft
Density Altitude at Idaho County (KGIC)
From a field elevation of 3,313 ft, a typical August afternoon at Idaho County (83 °F) raises density altitude to about 5,562 ft — solidly into the range where performance charts deserve a close read.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 31.2 | 2,258 ft | 37.8 | 2,707 ft |
| February | 33.7 | 2,429 ft | 42.0 | 2,988 ft |
| March | 39.4 | 2,814 ft | 49.3 | 3,471 ft |
| April | 45.1 | 3,194 ft | 55.8 | 3,893 ft |
| May | 52.7 | 3,693 ft | 63.8 | 4,404 ft |
| June | 58.9 | 4,092 ft | 70.3 | 4,812 ft |
| July | 67.9 | 4,662 ft | 82.1 | 5,538 ft ▲ |
| August | 67.7 | 4,650 ft | 82.5 | 5,562 ft ▲ |
| September | 58.9 | 4,092 ft | 72.7 | 4,962 ft |
| October | 47.0 | 3,320 ft | 57.6 | 4,009 ft |
| November | 37.0 | 2,653 ft | 44.9 | 3,181 ft |
| December | 30.4 | 2,203 ft | 37.0 | 2,653 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 KGIC
DENSITY ALTITUDE caution
Field elevation 3,313 ft — the air behaves like 5,592 ft.
- PRESSURE ALT
- 3,315 ft
- ISA DEVIATION
- —
- RULE-OF-THUMB DA
- —
- AIR DENSITY INDEX
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- AIR DENSITY
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- 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 Idaho fields
- S84 — Cottonwood Municipal
Cottonwood · elev 3,474 ft
- S82 — Kooskia Municipal
Kooskia · elev 1,263 ft
- S73 — Kamiah Municipal
Kamiah · elev 1,206 ft
- 1S7 — Slate Creek
Slate Creek · elev 1,660 ft
- 0S5 — Nezperce Municipal
Nezperce · elev 3,204 ft
- S89 — Craigmont Municipal
Craigmont · elev 3,805 ft
- I45 — Wapshilla
Winchester · elev 1,415 ft
- 75C — Orogrande
Orogrande · elev 4,419 ft
Frequently asked questions
How high does density altitude get at KGIC in summer?
On a typical August afternoon — around 83 °F at the nearest NOAA normals station — density altitude at Idaho County reaches roughly 5,562 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 KGIC on an average day?
It swings with the seasons: from roughly 2,203 ft at the coldest month's average temperature to about 4,662 ft at the warmest month's — all from a constant field elevation of 3,313 ft. The month-by-month table above carries the full year.
What is the field elevation of Idaho County?
3,313 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KGIC (ICAO) / GIC (FAA), in Grangeville, Idaho.