Potomac, Montana

Potomac is an unincorporated community and census-designated place (CDP) in Missoula County, Montana, United States. It is in the southeastern part of the county, in the valley of Camas Creek and Union Creek, which flows northwest to the Blackfoot River, part of the Clark Fork watershed.

Potomac, Montana
Census-designated place
Potomac is located in Montana
Potomac
Potomac
Potomac is located in the United States
Potomac
Potomac
Coordinates: 46°52′53″N 113°34′46″W
CountryUnited States
StateMontana
CountyMissoula
Area
[1]
 • Total0.28 sq mi (0.71 km2)
 • Land0.28 sq mi (0.71 km2)
 • Water0.00 sq mi (0.00 km2)
Elevation
3,619 ft (1,103 m)
Population
 (2020)
 • Total26
 • Density94.55/sq mi (36.52/km2)
Time zoneUTC-7 (Mountain (MST))
 • Summer (DST)UTC-6 (MDT)
ZIP Code
59823
Area code406
FIPS code30-59350
GNIS feature ID2806651[2]

Montana Highway 200 passes the northern edge of the community, leading northeast 28 miles (45 km) to Ovando and west 23 miles (37 km) to Missoula.

Potomac was first listed as a CDP prior to the 2020 census.[2]

Demographics
Historical population
CensusPop.Note%±
202026—
U.S. Decennial Census[3]

Climate

According to the Köppen Climate Classification system, Potomac has a warm-summer humid continental climate, abbreviated "Dfb" on climate maps. The hottest temperature recorded in Potomac was 103 °F (39.4 °C) on July 14, 002, while the coldest temperature recorded was −50 °F (−45.6 °C) on December 23–24, 1983.[4]

Climate data for Potomac, Montana, 1991–2020 normals, extremes 1964–present
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 60
(16)		 64
(18)		 76
(24)		 86
(30)		 97
(36)		 97
(36)		 103
(39)		 102
(39)		 97
(36)		 88
(31)		 72
(22)		 64
(18)		 103
(39)
Mean maximum °F (°C) 46.2
(7.9)		 50.6
(10.3)		 62.4
(16.9)		 74.3
(23.5)		 83.4
(28.6)		 88.4
(31.3)		 95.3
(35.2)		 94.3
(34.6)		 89.2
(31.8)		 76.6
(24.8)		 55.7
(13.2)		 44.7
(7.1)		 97.0
(36.1)
Average high °F (°C) 29.8
(−1.2)		 35.0
(1.7)		 45.5
(7.5)		 53.8
(12.1)		 64.0
(17.8)		 71.3
(21.8)		 82.0
(27.8)		 81.8
(27.7)		 71.0
(21.7)		 55.4
(13.0)		 39.3
(4.1)		 29.1
(−1.6)		 54.8
(12.7)
Daily mean °F (°C) 19.1
(−7.2)		 21.7
(−5.7)		 31.5
(−0.3)		 38.8
(3.8)		 46.9
(8.3)		 54.8
(12.7)		 61.3
(16.3)		 60.2
(15.7)		 51.5
(10.8)		 39.4
(4.1)		 27.7
(−2.4)		 18.9
(−7.3)		 39.3
(4.1)
Average low °F (°C) 8.3
(−13.2)		 8.5
(−13.1)		 17.5
(−8.1)		 23.8
(−4.6)		 29.9
(−1.2)		 38.3
(3.5)		 40.6
(4.8)		 38.7
(3.7)		 32.0
(0.0)		 23.4
(−4.8)		 16.2
(−8.8)		 8.7
(−12.9)		 23.8
(−4.6)
Mean minimum °F (°C) −17.6
(−27.6)		 −13.5
(−25.3)		 1.0
(−17.2)		 13.6
(−10.2)		 18.9
(−7.3)		 28.2
(−2.1)		 32.6
(0.3)		 29.8
(−1.2)		 22.0
(−5.6)		 6.3
(−14.3)		 −0.6
(−18.1)		 −13.2
(−25.1)		 −27.4
(−33.0)
Record low °F (°C) −44
(−42)		 −45
(−43)		 −37
(−38)		 −4
(−20)		 13
(−11)		 23
(−5)		 24
(−4)		 22
(−6)		 10
(−12)		 −21
(−29)		 −23
(−31)		 −50
(−46)		 −50
(−46)
Average precipitation inches (mm) 1.38
(35)		 1.03
(26)		 0.76
(19)		 1.13
(29)		 1.86
(47)		 2.16
(55)		 0.83
(21)		 0.62
(16)		 0.91
(23)		 1.46
(37)		 1.55
(39)		 1.41
(36)		 15.10
(384)
Average snowfall inches (cm) 15.5
(39)		 7.2
(18)		 4.6
(12)		 1.3
(3.3)		 0.4
(1.0)		 0.0
(0.0)		 0.0
(0.0)		 0.0
(0.0)		 0.2
(0.51)		 1.9
(4.8)		 7.4
(19)		 13.3
(34)		 51.8
(131.61)
Average extreme snow depth inches (cm) 11.1
(28)		 11.5
(29)		 9.5
(24)		 1.5
(3.8)		 0.2
(0.51)		 0.0
(0.0)		 0.0
(0.0)		 0.0
(0.0)		 0.1
(0.25)		 0.5
(1.3)		 3.8
(9.7)		 10.6
(27)		 16.8
(43)
Average precipitation days (≥ 0.01 in) 8.0 5.9 5.6 5.6 8.0 9.5 5.4 3.9 5.4 7.0 8.0 8.2 80.5
Average snowy days (≥ 0.1 in) 5.6 4.8 2.8 0.7 0.1 0.0 0.0 0.0 0.1 0.8 2.9 6.5 24.3
Source 1: NOAA[5]
Source 2: National Weather Service[4]

Media

The Seeley-Swan Pathfinder is the newspaper for Potomac.[6] It is published weekly.

References
  1. "ArcGIS REST Services Directory". United States Census Bureau. Retrieved September 5, 2022.
  2. "Potomac Census Designated Place". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
  3. "Census of Population and Housing". Census.gov. Retrieved June 4, 2016.
  4. "NOAA Online Weather Data – NWS Missoula". National Weather Service. Retrieved August 7, 2023.
  5. "U.S. Climate Normals Quick Access – Station: Potomac, MT". National Oceanic and Atmospheric Administration. Retrieved August 7, 2023.
  6. "News". Seeley-Swan Pathfinder. Retrieved August 31, 2023.


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