Ingomar is anunincorporated community in northwesternRosebud County,Montana,United States, along the route ofU.S. Route 12.[1] The town was established in 1908, as a station stop on theChicago, Milwaukee, St. Paul and Pacific Railroad, then under construction in Montana.[2] Although the land around Ingomar attracted numeroushomesteaders during the decade following the railroad's completion, the region proved to be far too arid and inhospitable for intensive agricultural use, and by the 1920s the town was in decline. The railroad through the area was abandoned in 1980, and only a handful of people remain in Ingomar today.
Three of the town's surviving buildings: theIngomar Public School,J. A. Bookman General Store, andWiley, Clark & Greening Bank have been listed on theNational Register of Historic Places.
According to theKöppen Climate Classification system, Ingomar has acold semi-arid climate, abbreviated "BSk" on climate maps.
| Climate data for Ingomar, Montana, 1991–2020 normals, extremes 1924–1954, 1956–present | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °F (°C) | 70 (21) | 77 (25) | 82 (28) | 92 (33) | 100 (38) | 109 (43) | 112 (44) | 109 (43) | 106 (41) | 94 (34) | 78 (26) | 73 (23) | 112 (44) |
| Mean maximum °F (°C) | 54.3 (12.4) | 57.8 (14.3) | 70.4 (21.3) | 79.6 (26.4) | 86.1 (30.1) | 95.0 (35.0) | 100.7 (38.2) | 100.3 (37.9) | 95.5 (35.3) | 81.7 (27.6) | 67.4 (19.7) | 55.7 (13.2) | 102.0 (38.9) |
| Mean daily maximum °F (°C) | 32.0 (0.0) | 36.4 (2.4) | 48.1 (8.9) | 58.3 (14.6) | 68.3 (20.2) | 78.1 (25.6) | 88.3 (31.3) | 87.5 (30.8) | 75.9 (24.4) | 59.2 (15.1) | 45.4 (7.4) | 34.2 (1.2) | 59.3 (15.2) |
| Daily mean °F (°C) | 18.1 (−7.7) | 22.7 (−5.2) | 33.7 (0.9) | 43.7 (6.5) | 53.5 (11.9) | 63.2 (17.3) | 71.6 (22.0) | 69.8 (21.0) | 58.7 (14.8) | 44.2 (6.8) | 31.0 (−0.6) | 20.7 (−6.3) | 44.2 (6.8) |
| Mean daily minimum °F (°C) | 4.1 (−15.5) | 9.0 (−12.8) | 19.3 (−7.1) | 29.1 (−1.6) | 38.8 (3.8) | 48.3 (9.1) | 54.8 (12.7) | 52.1 (11.2) | 41.5 (5.3) | 29.3 (−1.5) | 16.6 (−8.6) | 7.1 (−13.8) | 29.2 (−1.6) |
| Mean minimum °F (°C) | −21.5 (−29.7) | −14.9 (−26.1) | −1.0 (−18.3) | 16.9 (−8.4) | 26.1 (−3.3) | 37.8 (3.2) | 46.4 (8.0) | 40.6 (4.8) | 28.8 (−1.8) | 13.3 (−10.4) | −5.8 (−21.0) | −16.1 (−26.7) | −29.7 (−34.3) |
| Record low °F (°C) | −49 (−45) | −55 (−48) | −38 (−39) | −15 (−26) | 10 (−12) | 27 (−3) | 31 (−1) | 30 (−1) | 13 (−11) | −17 (−27) | −38 (−39) | −54 (−48) | −55 (−48) |
| Averageprecipitation inches (mm) | 0.44 (11) | 0.41 (10) | 0.66 (17) | 1.55 (39) | 2.56 (65) | 2.30 (58) | 1.41 (36) | 1.02 (26) | 1.10 (28) | 1.19 (30) | 0.50 (13) | 0.41 (10) | 13.55 (343) |
| Average snowfall inches (cm) | 6.5 (17) | 4.9 (12) | 4.4 (11) | 1.9 (4.8) | 0.9 (2.3) | 0.0 (0.0) | 0.0 (0.0) | 0.0 (0.0) | 0.0 (0.0) | 1.7 (4.3) | 3.9 (9.9) | 5.7 (14) | 29.9 (75.3) |
| Average precipitation days(≥ 0.01 in) | 4.7 | 4.7 | 5.8 | 6.8 | 8.8 | 8.8 | 6.2 | 4.2 | 4.9 | 5.0 | 3.6 | 4.4 | 67.9 |
| Average snowy days(≥ 0.1 in) | 4.1 | 3.8 | 3.2 | 1.3 | 0.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.9 | 2.3 | 3.9 | 19.9 |
| Source 1: NOAA[3] | |||||||||||||
| Source 2: National Weather Service[4] | |||||||||||||
Municipalities and communities ofRosebud County, Montana,United States | ||
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| Ghost town | ||
| Footnotes | ‡This populated place also has portions in an adjacent county or counties | |
46°34′36″N107°22′20″W / 46.57667°N 107.37222°W /46.57667; -107.37222
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