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Santiam Jct. Weather Records (USS0021E05S)

Record envelope, standing records and threshold days for Santiam Jct. (USS0021E05S), Oregon, United States, with 49 years of record.

Key Facts for Santiam Jct.

  • Santiam Jct. (USS0021E05S) is a weather station in Oregon, United States at 44.44 latitude and -121.95 longitude, 1,140 m (3,740 ft) above sea level.
  • The station reports from 1978 to 2026, 49 years of record.
  • 1,464 records set at Santiam Jct. still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Santiam Jct. set a daily record high maximum temperature of 28.2 C (82.8 F) on 8 October 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Oregon, United States, 44.44 latitude, -121.95 longitude.
  • Elevation: 1,140 m (3,740 ft).
  • Period of record: 1978 to 2026, 49 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

11 days at or beyond a record
Daily record high and record low at Santiam Jct., with 2026 drawn through them The band shows the record high and record low for each calendar day at Santiam Jct.. The lines show the 2026 daily maximum and minimum. 11 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Santiam Jct.. The lines show the 2026 daily maximum and minimum. 11 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Santiam Jct., with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan24.0 C (75.2 F)-23.4 C (-10.1 F)14.5 C (58.1 F)-11.1 C (12.0 F)
Feb24.3 C (75.7 F)-24.3 C (-11.7 F)18.8 C (65.8 F)-7.3 C (18.9 F)
Mar23.3 C (73.9 F)-19.0 C (-2.2 F)21.7 C (71.1 F)-7.4 C (18.7 F)
Apr29.8 C (85.6 F)-16.9 C (1.6 F)22.9 C (73.2 F)-7.2 C (19.0 F)
May35.3 C (95.5 F)-11.2 C (11.8 F)27.0 C (80.6 F)-3.9 C (25.0 F)
Jun39.1 C (102.4 F)-5.7 C (21.7 F)32.3 C (90.1 F)-1.0 C (30.2 F)
Jul39.4 C (102.9 F)-3.1 C (26.4 F)32.4 C (90.3 F)-0.1 C (31.8 F)
Aug37.4 C (99.3 F)-3.4 C (25.9 F)34.8 C (94.6 F)-2.6 C (27.3 F)
Sep38.4 C (101.1 F)-7.3 C (18.9 F)29.1 C (84.4 F)-2.3 C (27.9 F)
Oct30.9 C (87.6 F)-10.5 C (13.1 F)29.6 C (85.3 F)-5.7 C (21.7 F)
Nov22.8 C (73.0 F)-20.1 C (-4.2 F)n/an/a
Dec22.5 C (72.5 F)-28.1 C (-18.6 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Santiam Jct. by the year they were set 1,464 records at Santiam Jct. still stand. 1989 holds the most, with 89. 02550751001983: 351984: 241985: 361986: 301987: 411988: 851989: 891990: 431991: 301992: 371993: 321994: 231995: 291996: 431997: 131998: 231999: 302000: 182001: 342002: 422003: 342004: 232005: 182006: 422007: 332008: 532009: 432010: 252011: 342012: 332013: 282014: 262015: 372016: 322017: 292018: 222019: 312020: 272021: 252022: 502023: 222024: 172025: 232026: 20198319881993199820032008201320182023
1,464 records at Santiam Jct. still stand. 1989 holds the most, with 89.
Standing records at Santiam Jct. by the year they were set
Year setStanding records
198335
198424
198536
198630
198741
198885
198989
199043
199130
199237
199332
199423
199529
199643
199713
199823
199930
200018
200134
200242
200334
200423
200518
200642
200733
200853
200943
201025
201134
201233
201328
201426
201537
201632
201729
201822
201931
202027
202125
202250
202322
202417
202523
202620

All-Time Record Progression

3 new records
When Santiam Jct. set new all-time records 3 all-time records were set at Santiam Jct. between 27 June 2021 and 30 July 2022. Each dot is a new record. Record high minimum temperatureRecord high maximum temperature27 June 2021: Record high minimum temperature 21.5 C (70.7 F)28 June 2021: Record high maximum temperature 39.1 C (102.4 F)30 July 2022: Record high maximum temperature 39.4 C (102.9 F)
3 all-time records were set at Santiam Jct. between 27 June 2021 and 30 July 2022. Each dot is a new record.
When Santiam Jct. set new all-time records
DateKindDetail
2021-06-27Record high minimum temperatureRecord high minimum temperature 21.5 C (70.7 F)
2021-06-28Record high maximum temperatureRecord high maximum temperature 39.1 C (102.4 F)
2022-07-30Record high maximum temperatureRecord high maximum temperature 39.4 C (102.9 F)

Wettest Day of Each Month

Nov: 134.6 mm (5.3 in)
Record daily precipitation for each month at Santiam Jct. The wettest day on record for each calendar month at Santiam Jct.. The most was 134.6 mm (5.3 in) on 25 November 1999. 050100150 Jan: 91.4 mm (3.6 in), 19 January 2012 Jan Feb: 96.5 mm (3.8 in), 12 February 1984 Feb Mar: 68.6 mm (2.7 in), 29 March 1983 Mar Apr: 88.9 mm (3.5 in), 30 April 2009 Apr May: 45.7 mm (1.8 in), 14 May 2001 May Jun: 66.0 mm (2.6 in), 2 June 2010 Jun Jul: 33.0 mm (1.3 in), 9 July 1995 Jul Aug: 50.8 mm (2.0 in), 8 August 1989 Aug Sep: 73.7 mm (2.9 in), 29 September 2013 Sep Oct: 78.7 mm (3.1 in), 27 October 1994 Oct Nov: 134.6 mm (5.3 in), 25 November 1999 Nov Dec: 132.1 mm (5.2 in), 18 December 2025 Dec
The wettest day on record for each calendar month at Santiam Jct.. The most was 134.6 mm (5.3 in) on 25 November 1999.
Record daily precipitation for each month at Santiam Jct.
MonthRecord daily precipitation (mm)Date
Jan91.4 mm (3.6 in)19 January 2012
Feb96.5 mm (3.8 in)12 February 1984
Mar68.6 mm (2.7 in)29 March 1983
Apr88.9 mm (3.5 in)30 April 2009
May45.7 mm (1.8 in)14 May 2001
Jun66.0 mm (2.6 in)2 June 2010
Jul33.0 mm (1.3 in)9 July 1995
Aug50.8 mm (2.0 in)8 August 1989
Sep73.7 mm (2.9 in)29 September 2013
Oct78.7 mm (3.1 in)27 October 1994
Nov134.6 mm (5.3 in)25 November 1999
Dec132.1 mm (5.2 in)18 December 2025

Period of Record Coverage

1983 to 2026
Days with data per year at Santiam Jct. 44 years of record at Santiam Jct., 1983 to 2026. 4 years have data for under 90 percent of days and are left out of rankings: 1983, 1984, 1985, 2026. 1983: 186 of 365 days1984: 262 of 366 days1985: 175 of 365 days1986: 362 of 365 days1987: 360 of 365 days1988: 357 of 366 days1989: 355 of 365 days1990: 357 of 365 days1991: 362 of 365 days1992: 365 of 366 days1993: 342 of 365 days1994: 352 of 365 days1995: 365 of 365 days1996: 365 of 366 days1997: 365 of 365 days1998: 363 of 365 days1999: 346 of 365 days2000: 366 of 366 days2001: 365 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 365 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 365 of 365 days2008: 364 of 366 days2009: 364 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 364 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 362 of 365 days2022: 362 of 365 days2023: 365 of 365 days2024: 348 of 366 days2025: 364 of 365 days2026: 287 of 365 days1990200020102020
44 years of record at Santiam Jct., 1983 to 2026. 4 years have data for under 90 percent of days and are left out of rankings: 1983, 1984, 1985, 2026.
Days with data per year at Santiam Jct.
YearDays with dataShare of yearComplete
198318651%No
198426272%No
198517548%No
198636299%Yes
198736099%Yes
198835798%Yes
198935597%Yes
199035798%Yes
199136299%Yes
1992365100%Yes
199334294%Yes
199435296%Yes
1995365100%Yes
1996365100%Yes
1997365100%Yes
199836399%Yes
199934695%Yes
2000366100%Yes
2001365100%Yes
2002365100%Yes
2003365100%Yes
2004365100%Yes
2005365100%Yes
2006365100%Yes
2007365100%Yes
200836499%Yes
2009364100%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013364100%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017365100%Yes
2018365100%Yes
2019365100%Yes
2020366100%Yes
202136299%Yes
202236299%Yes
2023365100%Yes
202434895%Yes
2025364100%Yes
202628779%No

Latest Records

20
Latest records at Santiam Jct.
DateStationRecordValueBeat old record byOld record stoodSignificance
8 October 2026Santiam Jct., USdaily high max (Provisional)28.2 C (82.8 F)0.8 C (1.4 F)29 years13 of 100 (Routine)
7 October 2026Santiam Jct., USdaily high max (Provisional)29.6 C (85.3 F)2.7 C (4.9 F)1 year8 of 100 (Routine)
4 October 2026Santiam Jct., USdaily high max (Provisional)29.6 C (85.3 F)2.1 C (3.8 F)12 years10 of 100 (Routine)
3 October 2026Santiam Jct., USdaily high max (Provisional)28.2 C (82.8 F)0.3 C (0.5 F)24 years11 of 100 (Routine)
13 September 2026Santiam Jct., USdaily low max (Provisional)9.1 C (48.4 F)1.0 C (1.8 F)21 years11 of 100 (Routine)
4 September 2026Santiam Jct., USdaily rain (Provisional)15.2 mm (0.6 in)5.0 mm (0.20 in)33 years19 of 100 (Routine)
2 September 2026Santiam Jct., USdaily rain (Provisional)20.3 mm (0.8 in)2.5 mm (0.10 in)47 years20 of 100 (Routine)
30 August 2026Santiam Jct., USdaily low min (Provisional)-2.6 C (27.3 F)0.4 C (0.7 F)5 years6 of 100 (Routine)
6 August 2026Santiam Jct., USdaily high max34.1 C (93.4 F)0.8 C (1.4 F)40 years17 of 100 (Routine)
5 August 2026Santiam Jct., USdaily high max34.8 C (94.6 F)1.3 C (2.3 F)36 years16 of 100 (Routine)
20 July 2026Santiam Jct., USdaily high min14.4 C (57.9 F)1.9 C (3.4 F)32 years18 of 100 (Routine)
29 June 2026Santiam Jct., USdaily low max11.3 C (52.3 F)1.5 C (2.7 F)41 years18 of 100 (Routine)
15 June 2026Santiam Jct., USdaily high max32.3 C (90.1 F)3.5 C (6.3 F)37 years20 of 100 (Routine)
15 June 2026Santiam Jct., USdaily high min10.9 C (51.6 F)1.2 C (2.2 F)43 years19 of 100 (Routine)
14 June 2026Santiam Jct., USdaily high min16.1 C (61.0 F)6.4 C (11.5 F)43 years33 of 100 (Routine)
29 May 2026Santiam Jct., USdaily rain (Tie)15.2 mm (0.6 in)tie28 years3 of 100 (Routine)
3 May 2026Santiam Jct., USdaily high min5.7 C (42.3 F)1.2 C (2.2 F)9 years9 of 100 (Routine)
1 May 2026Santiam Jct., USdaily high min5.0 C (41.0 F)0.1 C (0.2 F)28 years12 of 100 (Routine)
20 April 2026Santiam Jct., USdaily high min7.7 C (45.9 F)5.3 C (9.5 F)43 years33 of 100 (Routine)
15 April 2026Santiam Jct., USdaily rain33.0 mm (1.3 in)5.1 mm (0.20 in)20 years15 of 100 (Routine)

Climate Trend

35 complete years, 1986 to 2025
Annual mean temperature at Santiam Jct. as warming stripes, 1986 to 2025 One stripe for each of 35 complete years at Santiam Jct., 1986 to 2025. Blue stripes are years cooler than the station's own mean of 6.6 C (44.0 F); red stripes are warmer. The coolest year was 2011, at 5.6 C (42.0 F), and the warmest was 2015, at 8.2 C (46.8 F). The strongest colour marks a difference of 1.6 C (2.9 F). 1986: 6.8 C, +0.1 C from the station mean1990: 6.2 C, -0.4 C from the station mean1991: 6.5 C, -0.1 C from the station mean1992: 7.6 C, +1.0 C from the station mean1994: 6.2 C, -0.5 C from the station mean1995: 6.7 C, +0.1 C from the station mean1996: 6.3 C, -0.3 C from the station mean1997: 6.3 C, -0.3 C from the station mean1998: 6.6 C, -0.1 C from the station mean2000: 6.2 C, -0.5 C from the station mean2001: 6.4 C, -0.2 C from the station mean2002: 6.2 C, -0.4 C from the station mean2003: 6.9 C, +0.3 C from the station mean2004: 7.2 C, +0.5 C from the station mean2005: 6.6 C, 0.0 C from the station mean2006: 6.6 C, -0.1 C from the station mean2007: 6.4 C, -0.3 C from the station mean2008: 6.0 C, -0.7 C from the station mean2009: 6.0 C, -0.6 C from the station mean2010: 6.2 C, -0.5 C from the station mean2011: 5.6 C, -1.1 C from the station mean2012: 6.4 C, -0.3 C from the station mean2013: 6.5 C, -0.2 C from the station mean2014: 7.5 C, +0.8 C from the station mean2015: 8.2 C, +1.6 C from the station mean2016: 6.9 C, +0.2 C from the station mean2017: 6.6 C, 0.0 C from the station mean2018: 6.9 C, +0.3 C from the station mean2019: 6.2 C, -0.4 C from the station mean2020: 6.8 C, +0.1 C from the station mean2021: 7.0 C, +0.4 C from the station mean2022: 7.0 C, +0.3 C from the station mean2023: 6.7 C, 0.0 C from the station mean2024: 6.9 C, +0.3 C from the station mean2025: 7.9 C, +1.2 C from the station mean198619901995200020052010201520202025
One stripe for each of 35 complete years at Santiam Jct., 1986 to 2025. Blue stripes are years cooler than the station's own mean of 6.6 C (44.0 F); red stripes are warmer. The coolest year was 2011, at 5.6 C (42.0 F), and the warmest was 2015, at 8.2 C (46.8 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at Santiam Jct. as warming stripes, 1986 to 2025
YearAnnual mean temperatureDifference from the station mean
19866.8 C+0.11 C
19906.2 C-0.45 C
19916.5 C-0.13 C
19927.6 C+0.96 C
19946.2 C-0.47 C
19956.7 C+0.08 C
19966.3 C-0.33 C
19976.3 C-0.33 C
19986.6 C-0.09 C
20006.2 C-0.50 C
20016.4 C-0.24 C
20026.2 C-0.41 C
20036.9 C+0.28 C
20047.2 C+0.51 C
20056.6 C-0.02 C
20066.6 C-0.09 C
20076.4 C-0.30 C
20086.0 C-0.67 C
20096.0 C-0.64 C
20106.2 C-0.50 C
20115.6 C-1.08 C
20126.4 C-0.30 C
20136.5 C-0.20 C
20147.5 C+0.80 C
20158.2 C+1.56 C
20166.9 C+0.21 C
20176.6 C-0.03 C
20186.9 C+0.27 C
20196.2 C-0.42 C
20206.8 C+0.14 C
20217.0 C+0.36 C
20227.0 C+0.31 C
20236.7 C+0.02 C
20246.9 C+0.25 C
20257.9 C+1.22 C

The fitted trend in annual mean temperature here over 1986 to 2025 is 0.14 C (-0.03 to 0.31) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.2 F (-0.1 to 0.6) per decade. The slope is a straight line fitted to 35 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Santiam Jct.
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.14 C (-0.03 to 0.31) per decade0.2 F (-0.1 to 0.6) per decade1986 to 202535Not clearly different from zero
Mean daily maximum0.1 C (-0.1 to 0.3) per decade0.2 F (-0.2 to 0.6) per decade1986 to 202535Not clearly different from zero
Mean daily minimum0.18 C (0.00 to 0.35) per decade0.32 F (0.01 to 0.63) per decade1986 to 202535Rise

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1978 to 2026
Yearly extremes at Santiam Jct.: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)39.4 C (102.9 F)202235.0 C (94.9 F)44
Coldest night (TNn)-28.1 C (-18.6 F)1990-18.0 C (-0.4 F)44
Wettest day (Rx1day)134.6 mm (5.3 in)199968.6 mm (2.7 in)49
Wettest five days (Rx5day)266.7 mm (10.5 in)1996170.2 mm (6.7 in)49
Longest dry spell (CDD)99 days200343 days49

Hottest day (TXx)

Hottest day (TXx) at Santiam Jct. by year The hottest day of the year at Santiam Jct., 1978 to 2026. The record is 39.4 C (102.9 F) in 2022, marked on the chart; the median year is 35.0 C (94.9 F). 323436384019801990200020102020Record: 39.4 C (102.9 F) in 2022
The hottest day of the year at Santiam Jct., 1978 to 2026. The record is 39.4 C (102.9 F) in 2022, marked on the chart; the median year is 35.0 C (94.9 F).
Hottest day (TXx) at Santiam Jct. by year
YearHottest day (TXx)
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
198333.8 C (92.8 F)
198434.1 C (93.4 F)
198535.6 C (96.1 F)
198635.3 C (95.5 F)
198734.9 C (94.8 F)
198838.4 C (101.1 F)
198932.6 C (90.7 F)
199036.4 C (97.5 F)
199134.0 C (93.2 F)
199236.5 C (97.7 F)
199333.1 C (91.6 F)
199436.2 C (97.2 F)
199533.2 C (91.8 F)
199635.6 C (96.1 F)
199733.1 C (91.6 F)
199837.3 C (99.1 F)
199932.7 C (90.9 F)
200032.9 C (91.2 F)
200133.7 C (92.7 F)
200236.2 C (97.2 F)
200335.7 C (96.3 F)
200434.7 C (94.5 F)
200535.8 C (96.4 F)
200637.3 C (99.1 F)
200733.7 C (92.7 F)
200837.4 C (99.3 F)
200935.0 C (95.0 F)
201033.7 C (92.7 F)
201132.2 C (90.0 F)
201234.6 C (94.3 F)
201333.3 C (91.9 F)
201433.0 C (91.4 F)
201537.8 C (100.0 F)
201634.8 C (94.6 F)
201736.6 C (97.9 F)
201835.5 C (95.9 F)
201934.0 C (93.2 F)
202035.6 C (96.1 F)
202139.1 C (102.4 F)
202239.4 C (102.9 F)
202335.3 C (95.5 F)
202435.2 C (95.4 F)
202534.8 C (94.6 F)
202634.8 C (94.6 F)

Coldest night (TNn)

Coldest night (TNn) at Santiam Jct. by year The coldest night of the year at Santiam Jct., 1978 to 2026. The record is -28.1 C (-18.6 F) in 1990, marked on the chart; the median year is -18.0 C (-0.4 F). -30-25-20-15-1019801990200020102020Record: -28.1 C (-18.6 F) in 1990
The coldest night of the year at Santiam Jct., 1978 to 2026. The record is -28.1 C (-18.6 F) in 1990, marked on the chart; the median year is -18.0 C (-0.4 F).
Coldest night (TNn) at Santiam Jct. by year
YearColdest night (TNn)
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
1983-23.7 C (-10.7 F)
1984-17.0 C (1.4 F)
1985-18.9 C (-2.0 F)
1986-13.7 C (7.3 F)
1987-21.4 C (-6.5 F)
1988-18.0 C (-0.4 F)
1989-10.3 C (13.5 F)
1990-28.1 C (-18.6 F)
1991-17.3 C (0.9 F)
1992-13.5 C (7.7 F)
1993-21.5 C (-6.7 F)
1994-20.1 C (-4.2 F)
1995-16.9 C (1.6 F)
1996-19.8 C (-3.6 F)
1997-16.3 C (2.7 F)
1998-23.1 C (-9.6 F)
1999-14.4 C (6.1 F)
2000-15.9 C (3.4 F)
2001-16.8 C (1.8 F)
2002-20.8 C (-5.4 F)
2003-15.2 C (4.6 F)
2004-16.0 C (3.2 F)
2005-16.5 C (2.3 F)
2006-19.8 C (-3.6 F)
2007-22.3 C (-8.1 F)
2008-19.2 C (-2.6 F)
2009-22.8 C (-9.0 F)
2010-18.0 C (-0.4 F)
2011-23.2 C (-9.8 F)
2012-17.2 C (1.0 F)
2013-25.5 C (-13.9 F)
2014-16.8 C (1.8 F)
2015-17.9 C (-0.2 F)
2016-17.4 C (0.7 F)
2017-23.4 C (-10.1 F)
2018-21.8 C (-7.2 F)
2019-19.1 C (-2.4 F)
2020-14.4 C (6.1 F)
2021-13.1 C (8.4 F)
2022-19.2 C (-2.6 F)
2023-18.3 C (-0.9 F)
2024-19.7 C (-3.5 F)
2025-12.8 C (9.0 F)
2026-11.1 C (12.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Santiam Jct. by year The wettest day of the year at Santiam Jct., 1978 to 2026. The record is 134.6 mm (5.3 in) in 1999, marked on the chart; the median year is 68.6 mm (2.7 in). 25507510012515019801990200020102020Record: 134.6 mm (5.3 in) in 1999
The wettest day of the year at Santiam Jct., 1978 to 2026. The record is 134.6 mm (5.3 in) in 1999, marked on the chart; the median year is 68.6 mm (2.7 in).
Wettest day (Rx1day) at Santiam Jct. by year
YearWettest day (Rx1day)
197855.9 mm (2.2 in)
197971.1 mm (2.8 in)
198099.1 mm (3.9 in)
1981104.1 mm (4.1 in)
198261.0 mm (2.4 in)
198368.6 mm (2.7 in)
198496.5 mm (3.8 in)
198555.9 mm (2.2 in)
198663.5 mm (2.5 in)
198763.5 mm (2.5 in)
198868.6 mm (2.7 in)
198966.0 mm (2.6 in)
199076.2 mm (3.0 in)
199163.5 mm (2.5 in)
199273.7 mm (2.9 in)
199366.0 mm (2.6 in)
199478.7 mm (3.1 in)
199571.1 mm (2.8 in)
1996121.9 mm (4.8 in)
199761.0 mm (2.4 in)
199891.4 mm (3.6 in)
1999134.6 mm (5.3 in)
200058.4 mm (2.3 in)
200166.0 mm (2.6 in)
200261.0 mm (2.4 in)
200378.7 mm (3.1 in)
200453.3 mm (2.1 in)
200599.1 mm (3.9 in)
200683.8 mm (3.3 in)
200761.0 mm (2.4 in)
200861.0 mm (2.4 in)
200988.9 mm (3.5 in)
201066.0 mm (2.6 in)
201181.3 mm (3.2 in)
201291.4 mm (3.6 in)
201373.7 mm (2.9 in)
201491.4 mm (3.6 in)
201563.5 mm (2.5 in)
201650.8 mm (2.0 in)
201761.0 mm (2.4 in)
201858.4 mm (2.3 in)
201976.2 mm (3.0 in)
202055.9 mm (2.2 in)
202158.4 mm (2.3 in)
202291.4 mm (3.6 in)
202383.8 mm (3.3 in)
202453.3 mm (2.1 in)
2025132.1 mm (5.2 in)
202640.6 mm (1.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Santiam Jct. by year The wettest five days of the year at Santiam Jct., 1978 to 2026. The record is 266.7 mm (10.5 in) in 1996, marked on the chart; the median year is 170.2 mm (6.7 in). 5010015020025030019801990200020102020Record: 266.7 mm (10.5 in) in 1996
The wettest five days of the year at Santiam Jct., 1978 to 2026. The record is 266.7 mm (10.5 in) in 1996, marked on the chart; the median year is 170.2 mm (6.7 in).
Wettest five days (Rx5day) at Santiam Jct. by year
YearWettest five days (Rx5day)
1978132.1 mm (5.2 in)
1979162.5 mm (6.4 in)
1980221.0 mm (8.7 in)
1981177.8 mm (7.0 in)
1982137.2 mm (5.4 in)
1983137.2 mm (5.4 in)
1984198.1 mm (7.8 in)
1985124.4 mm (4.9 in)
1986172.7 mm (6.8 in)
1987180.3 mm (7.1 in)
1988190.5 mm (7.5 in)
1989132.1 mm (5.2 in)
1990177.8 mm (7.0 in)
1991129.6 mm (5.1 in)
1992152.5 mm (6.0 in)
1993154.9 mm (6.1 in)
1994154.8 mm (6.1 in)
1995172.7 mm (6.8 in)
1996266.7 mm (10.5 in)
1997170.2 mm (6.7 in)
1998246.3 mm (9.7 in)
1999203.2 mm (8.0 in)
2000193.1 mm (7.6 in)
2001180.2 mm (7.1 in)
2002144.7 mm (5.7 in)
2003147.3 mm (5.8 in)
2004144.7 mm (5.7 in)
2005254.1 mm (10.0 in)
2006205.7 mm (8.1 in)
2007157.5 mm (6.2 in)
2008162.7 mm (6.4 in)
2009155.0 mm (6.1 in)
2010147.3 mm (5.8 in)
2011210.9 mm (8.3 in)
2012256.4 mm (10.1 in)
2013170.2 mm (6.7 in)
2014205.8 mm (8.1 in)
2015175.3 mm (6.9 in)
2016210.8 mm (8.3 in)
2017167.7 mm (6.6 in)
2018116.8 mm (4.6 in)
2019190.5 mm (7.5 in)
2020149.9 mm (5.9 in)
2021127.1 mm (5.0 in)
2022162.5 mm (6.4 in)
2023185.4 mm (7.3 in)
2024170.2 mm (6.7 in)
2025210.9 mm (8.3 in)
202696.5 mm (3.8 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Santiam Jct. by year The longest dry spell of the year at Santiam Jct., 1978 to 2026. The record is 99 days in 2003, marked on the chart; the median year is 43 days. 025507510019801990200020102020Record: 99 days in 2003
The longest dry spell of the year at Santiam Jct., 1978 to 2026. The record is 99 days in 2003, marked on the chart; the median year is 43 days.
Longest dry spell (CDD) at Santiam Jct. by year
YearLongest dry spell (CDD)
197813 days
197923 days
198041 days
198130 days
198223 days
198320 days
198462 days
198551 days
198646 days
198757 days
198834 days
198928 days
199042 days
199143 days
199218 days
199323 days
199421 days
199522 days
199641 days
199745 days
199832 days
199941 days
200056 days
200154 days
200236 days
200399 days
200457 days
200562 days
200670 days
200730 days
200837 days
200947 days
201045 days
201155 days
201232 days
201344 days
201419 days
201548 days
201628 days
201740 days
201848 days
201938 days
202052 days
202143 days
202273 days
202372 days
202447 days
202544 days
202646 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

35 years with a frost

Across 35 years with a frost, the median last spring frost at Santiam Jct. falls on 22 June and the median first autumn frost on 13 July, which leaves a median of 25 days between them.

Fitted over all years, the growing season changes by +8.4 days per decade at this station.

Frost dates and growing season at Santiam Jct.
MeasureMedian, all yearsEarliest periodRecent period (1995 to 2025)Recent against earliestFitted trend
Last spring frost22 Junen/a23 Junen/a+0.1 days per decade
First autumn frost13 Julyn/a21 Julyn/a+8.5 days per decade
Growing days25 daysn/a36 daysn/a+8.4 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

47 years, 1979 to 2025

A day with at least 70.6 mm (2.8 in) of rain is expected about once in 2 years. A day with at least 154.8 mm (6.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Santiam Jct.: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years70.6 mm (2.8 in)
5 years87.5 mm (3.4 in)
10 years100.7 mm (4.0 in)
25 years119.9 mm (4.7 in)
50 years136.4 mm (5.4 in)Longer than the 47 years of record
100 years154.8 mm (6.1 in)Longer than the 47 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 47 years of values from 1979 to 2025.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 134.6 mm (5.3 in) in 1999; 132.1 mm (5.2 in) in 2025; 121.9 mm (4.8 in) in 1996.

Download the Data

  • Data for Santiam Jct. standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Santiam Jct. threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-17).