Wahpeton, North Dakota · field elev 968 ft
Density Altitude at Harry Stern (KBWP)
Harry Stern sits at 968 ft, and even a typical July afternoon (83 °F) only lifts density altitude to about 2,706 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 | 8.8 | −2,277 ft | 18.8 | −1,546 ft |
| February | 12.7 | −1,990 ft | 23.1 | −1,238 ft |
| March | 26.9 | −968 ft | 36.7 | −284 ft |
| April | 42.5 | 113 ft | 54.4 | 911 ft |
| May | 56.3 | 1,036 ft | 67.9 | 1,788 ft |
| June | 66.8 | 1,718 ft | 77.4 | 2,389 ft |
| July | 71.1 | 1,992 ft | 82.5 | 2,706 ft |
| August | 68.9 | 1,852 ft | 80.7 | 2,595 ft |
| September | 60.3 | 1,298 ft | 72.8 | 2,100 ft |
| October | 45.8 | 337 ft | 57.1 | 1,088 ft |
| November | 29.6 | −778 ft | 38.9 | −132 ft |
| December | 15.8 | −1,764 ft | 24.4 | −1,145 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 KBWP
DENSITY ALTITUDE
Field elevation 968 ft — the air behaves like 2,737 ft.
- PRESSURE ALT
- 969 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 North Dakota fields
- 4N4 — Lidgerwood Municipal
Lidgerwood · elev 1,082 ft
- K74 — Robert Odegaard Field
Kindred · elev 947 ft
- 4R6 — Milnor Municipal
Milnor · elev 1,091 ft
- D54 — West Fargo Municipal
Fargo · elev 896 ft
- KFAR — Hector International
Fargo · elev 901 ft
- KGWR — Gwinner/Roger Melroe Field
Gwinner · elev 1,266 ft
- 5N8 — Casselton Robert Miller Regional
Casselton · elev 933 ft
- 5N4 — Sky Haven
Enderlin · elev 1,151 ft
Frequently asked questions
How high does density altitude get at KBWP in summer?
On a typical July afternoon — around 83 °F at the nearest NOAA normals station — density altitude at Harry Stern reaches roughly 2,706 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 KBWP on an average day?
It swings with the seasons: from roughly −2,277 ft at the coldest month's average temperature to about 1,992 ft at the warmest month's — all from a constant field elevation of 968 ft. The month-by-month table above carries the full year.
What is the field elevation of Harry Stern?
968 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KBWP (ICAO) / BWP (FAA), in Wahpeton, North Dakota.