Santiam Junction
Highways at Santiam Junction
Highways at Santiam Junction
Santiam Junction is located in Oregon
Santiam Junction
Santiam Junction
Location within the state of Oregon
Santiam Junction is located in the United States
Santiam Junction
Santiam Junction
Santiam Junction (the United States)
Coordinates: 44°26′12″N 121°56′22″W / 44.43667°N 121.93944°W / 44.43667; -121.93944
CountryUnited States
StateOregon
CountyLinn
Elevation
3,750 ft (1,140 m)
Time zoneUTC-8 (Pacific (PST))
  Summer (DST)UTC-7 (PDT)

Santiam Junction is a highway junction and unincorporated community[1][2] in Linn County, Oregon, United States, at the intersection of U.S. Route 20/Oregon Route 126 and Oregon Route 22.

According to the Oregon Department of Transportation, the elevation is 3,750 feet (1,143 m).[3]

An automated weather station is located here, as well as highway maintenance facilities. The Santiam Junction State Airport is an emergency/recreational landing strip that is closed from the first snowfall until spring. The airport grounds permit fly-in camping.[3]

The Santiam Junction vicinity is listed by the National Register of Historic Places as the site of the Oregon Pacific Railroad Linear Historic District, which consists of roughly 20 miles (32 km) of the old railroad grade between Idanha and the line's Cascade Range summit.[4][5]

Geologically, much of the area is a lava bed created during a period of volcanic activity around 1000 B.C.[6]

Climate

Santiam Junction experiences a dry-summer humid continental climate (Köppen Dsb) with warm, dry summers and cold, wet winters with heavy snow and rain.

Climate data for Santiam Junction, Oregon, 1991–2020 normals, 1949-2020 extremes: 3750ft (1143m)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 72
(22)
68
(20)
71
(22)
88
(31)
96
(36)
96
(36)
98
(37)
99
(37)
96
(36)
86
(30)
76
(24)
60
(16)
99
(37)
Mean maximum °F (°C) 53.4
(11.9)
55.8
(13.2)
61.6
(16.4)
69.9
(21.1)
77.4
(25.2)
84.1
(28.9)
90.8
(32.7)
91.0
(32.8)
87.2
(30.7)
76.0
(24.4)
61.7
(16.5)
49.0
(9.4)
92.9
(33.8)
Mean daily maximum °F (°C) 37.6
(3.1)
40.7
(4.8)
43.6
(6.4)
48.5
(9.2)
57.7
(14.3)
64.6
(18.1)
76.0
(24.4)
76.5
(24.7)
68.8
(20.4)
56.1
(13.4)
42.4
(5.8)
36.3
(2.4)
54.1
(12.3)
Daily mean °F (°C) 30.6
(−0.8)
32.1
(0.1)
34.7
(1.5)
38.8
(3.8)
46.2
(7.9)
51.5
(10.8)
59.2
(15.1)
59.1
(15.1)
53.8
(12.1)
44.3
(6.8)
35.0
(1.7)
29.8
(−1.2)
42.9
(6.1)
Mean daily minimum °F (°C) 23.6
(−4.7)
23.6
(−4.7)
25.8
(−3.4)
29.1
(−1.6)
34.7
(1.5)
38.3
(3.5)
42.4
(5.8)
41.7
(5.4)
38.7
(3.7)
32.5
(0.3)
27.6
(−2.4)
23.3
(−4.8)
31.8
(−0.1)
Mean minimum °F (°C) 7.2
(−13.8)
7.8
(−13.4)
13.0
(−10.6)
18.1
(−7.7)
25.0
(−3.9)
29.1
(−1.6)
32.9
(0.5)
31.4
(−0.3)
27.9
(−2.3)
22.0
(−5.6)
13.6
(−10.2)
6.6
(−14.1)
−1.6
(−18.7)
Record low °F (°C) −11
(−24)
−18
(−28)
−3
(−19)
4
(−16)
18
(−8)
22
(−6)
27
(−3)
28
(−2)
21
(−6)
14
(−10)
−4
(−20)
−19
(−28)
−19
(−28)
Average precipitation inches (mm) 10.84
(275)
7.79
(198)
7.76
(197)
6.03
(153)
4.01
(102)
2.81
(71)
0.66
(17)
0.77
(20)
2.28
(58)
5.88
(149)
9.98
(253)
11.58
(294)
70.39
(1,787)
Average snowfall inches (cm) 46.1
(117)
35.1
(89)
32.6
(83)
14.3
(36)
2.2
(5.6)
0.2
(0.51)
0.0
(0.0)
trace 0.1
(0.25)
4.2
(11)
25.5
(65)
49.2
(125)
209.5
(532.36)
Source 1: NOAA[7]
Source 2: XMACIS (snowfall, temp records & monthly max/mins)[8]
Climate data for Santiam Junction
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 61
(16)
67
(19)
71
(22)
88
(31)
96
(36)
95
(35)
99
(37)
99
(37)
96
(36)
86
(30)
76
(24)
60
(16)
99
(37)
Mean daily maximum °F (°C) 37.8
(3.2)
40.7
(4.8)
44.3
(6.8)
49.6
(9.8)
59.2
(15.1)
65.2
(18.4)
76.4
(24.7)
77.2
(25.1)
71.4
(21.9)
58.8
(14.9)
44.4
(6.9)
37.4
(3.0)
55.2
(12.9)
Mean daily minimum °F (°C) 22.5
(−5.3)
23.1
(−4.9)
25.4
(−3.7)
29.2
(−1.6)
33.9
(1.1)
38.2
(3.4)
42.7
(5.9)
41.3
(5.2)
37.7
(3.2)
32.4
(0.2)
27.8
(−2.3)
22.1
(−5.5)
31.4
(−0.3)
Record low °F (°C) −7
(−22)
−18
(−28)
0
(−18)
4
(−16)
18
(−8)
22
(−6)
28
(−2)
28
(−2)
21
(−6)
14
(−10)
2
(−17)
−19
(−28)
−19
(−28)
Average precipitation inches (mm) 9.28
(236)
6.66
(169)
7.72
(196)
5.74
(146)
3.74
(95)
2.37
(60)
0.75
(19)
0.73
(19)
1.35
(34)
4.1
(100)
10.63
(270)
9.06
(230)
62.14
(1,578)
Average snowfall inches (cm) 47.5
(121)
39.5
(100)
39.4
(100)
15
(38)
2.8
(7.1)
0.3
(0.76)
0
(0)
0
(0)
0.1
(0.25)
4.8
(12)
33.8
(86)
57.6
(146)
240.8
(612)
Average precipitation days 17 14 19 16 12 8 3 3 5 10 20 16 143
Source: [9]

See also

References

  1. "Feature Query Results". United States Board on Geographic Names, United States Geological Survey. Retrieved March 18, 2008.
  2. "Feature Class Types". Geographic Names Information System, United States Geological Survey. Archived from the original on February 15, 2008. Retrieved March 17, 2008.
  3. 1 2 "Santiam Junction". Department of Aviation State Warning Airports. Oregon Department of Transportation. Retrieved March 17, 2008.
  4. "Oregon Pacific Railroad Linear Historic District". OREGON - Marion County - Historic Districts. nationalregisterofhistoricplaces.com. Retrieved March 17, 2008.
  5. "National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010.
  6. Ellen Morris Bishop (2003). In Search of Ancient Oregon: A Geological and Natural History. Timber Press. ISBN 0-88192-590-X.
  7. "Santiam Junction, Oregon 1991-2020 Monthly Normals". Retrieved December 11, 2023.
  8. "xmACIS". National Oceanic and Atmospheric Administration. Retrieved December 11, 2023.
  9. "SANTIAM JUNCTION, OR (357554)". Western Regional Climate Center. Retrieved November 26, 2015.
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