Winifred, Montana · field elev 3,150 ft
Density Altitude at Left Coulee (LC0)
From a field elevation of 3,150 ft, a typical July afternoon at Left Coulee (80 °F) raises density altitude to about 5,236 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 | 23.1 | 1,494 ft | 34.1 | 2,253 ft |
| February | 24.1 | 1,564 ft | 35.4 | 2,342 ft |
| March | 32.3 | 2,131 ft | 44.3 | 2,939 ft |
| April | 42.0 | 2,786 ft | 54.6 | 3,615 ft |
| May | 50.0 | 3,315 ft | 62.7 | 4,135 ft |
| June | 58.8 | 3,886 ft | 70.9 | 4,651 ft |
| July | 66.3 | 4,362 ft | 80.4 | 5,236 ft ▲ |
| August | 65.0 | 4,280 ft | 79.9 | 5,206 ft ▲ |
| September | 55.1 | 3,647 ft | 68.7 | 4,513 ft |
| October | 44.1 | 2,926 ft | 56.7 | 3,751 ft |
| November | 32.5 | 2,144 ft | 43.4 | 2,880 ft |
| December | 24.6 | 1,599 ft | 35.3 | 2,335 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 LC0
DENSITY ALTITUDE caution
Field elevation 3,150 ft — the air behaves like 5,212 ft.
- PRESSURE ALT
- 3,152 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
- CW0 — Cow Creek
Winifred · elev 3,300 ft
- BW8 — Bullwhacker
Winifred · elev 3,100 ft
- WH0 — Woodhawk
Winifred · elev 3,100 ft
- BB0 — Black Butte North
Winifred · elev 3,150 ft
- L51 — Heller Farm
Winifred · elev 2,304 ft
- MT3 — Knox Ridge
Winifred · elev 2,950 ft
- 9S7 — Winifred
Winifred · elev 3,354 ft
- 48S — Harlem
Harlem · elev 2,643 ft
Frequently asked questions
How high does density altitude get at LC0 in summer?
On a typical July afternoon — around 80 °F at the nearest NOAA normals station — density altitude at Left Coulee reaches roughly 5,236 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 LC0 on an average day?
It swings with the seasons: from roughly 1,494 ft at the coldest month's average temperature to about 4,362 ft at the warmest month's — all from a constant field elevation of 3,150 ft. The month-by-month table above carries the full year.
What is the field elevation of Left Coulee?
3,150 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is LC0 (FAA), in Winifred, Montana.