Susitna Valley High Weather Records (USS0050N07S)
Record envelope, standing records and threshold days for Susitna Valley High (USS0050N07S), Alaska, United States, with 40 years of record.
Key Facts for Susitna Valley High
- Susitna Valley High (USS0050N07S) is a weather station in Alaska, United States at 62.13 latitude and -150.04 longitude, 114 m (375 ft) above sea level.
- The station reports from 1987 to 2026, 40 years of record.
- 1,464 records set at Susitna Valley High still stand.
- Records are tracked for prcp: an element needs 30 years of data to be eligible.
- Susitna Valley High set a daily record precipitation of 33.0 mm (1.3 in) on 15 September 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Alaska, United States, 62.13 latitude, -150.04 longitude.
- Elevation: 114 m (375 ft).
- Period of record: 1987 to 2026, 40 years.
- Eligible elements: prcp.
Daily Record Envelope and 2026
21 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 6.8 C (44.2 F) | -39.2 C (-38.6 F) | 1.7 C (35.1 F) | -38.9 C (-38.0 F) |
| Feb | 8.0 C (46.4 F) | -39.0 C (-38.2 F) | 2.8 C (37.0 F) | -34.4 C (-29.9 F) |
| Mar | 15.0 C (59.0 F) | -32.2 C (-26.0 F) | 3.3 C (37.9 F) | -32.2 C (-26.0 F) |
| Apr | 21.0 C (69.8 F) | -26.1 C (-15.0 F) | 11.7 C (53.1 F) | -12.8 C (9.0 F) |
| May | 29.4 C (84.9 F) | -6.7 C (19.9 F) | 16.7 C (62.1 F) | -1.1 C (30.0 F) |
| Jun | 35.9 C (96.6 F) | -2.2 C (28.0 F) | 26.1 C (79.0 F) | -1.1 C (30.0 F) |
| Jul | 35.5 C (95.9 F) | 2.2 C (36.0 F) | 25.6 C (78.1 F) | 5.0 C (41.0 F) |
| Aug | 31.0 C (87.8 F) | -2.3 C (27.9 F) | 25.0 C (77.0 F) | 1.1 C (34.0 F) |
| Sep | 25.0 C (77.0 F) | -9.4 C (15.1 F) | 17.2 C (63.0 F) | -3.9 C (25.0 F) |
| Oct | 15.6 C (60.1 F) | -27.0 C (-16.6 F) | 8.9 C (48.0 F) | -6.7 C (19.9 F) |
| Nov | 6.7 C (44.1 F) | -34.8 C (-30.6 F) | n/a | n/a |
| Dec | 6.4 C (43.5 F) | -36.6 C (-33.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1996 | 22 |
| 1997 | 95 |
| 1998 | 52 |
| 1999 | 45 |
| 2000 | 26 |
| 2001 | 62 |
| 2002 | 57 |
| 2003 | 66 |
| 2004 | 66 |
| 2005 | 50 |
| 2006 | 40 |
| 2007 | 44 |
| 2008 | 55 |
| 2009 | 53 |
| 2010 | 28 |
| 2011 | 36 |
| 2012 | 49 |
| 2013 | 80 |
| 2014 | 44 |
| 2015 | 58 |
| 2016 | 50 |
| 2017 | 35 |
| 2018 | 34 |
| 2019 | 52 |
| 2020 | 43 |
| 2021 | 48 |
| 2022 | 30 |
| 2023 | 20 |
| 2024 | 35 |
| 2025 | 50 |
| 2026 | 39 |
Wettest Day of Each Month
Aug: 111.8 mm (4.4 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 50.8 mm (2.0 in) | 25 January 2025 |
| Feb | 35.6 mm (1.4 in) | 10 February 1996 |
| Mar | 38.1 mm (1.5 in) | 2 March 1990 |
| Apr | 35.6 mm (1.4 in) | 30 April 1999 |
| May | 45.7 mm (1.8 in) | 3 May 2013 |
| Jun | 35.6 mm (1.4 in) | 22 June 2006 |
| Jul | 45.7 mm (1.8 in) | 15 July 2023 |
| Aug | 111.8 mm (4.4 in) | 26 August 2004 |
| Sep | 66.0 mm (2.6 in) | 16 September 1993 |
| Oct | 45.7 mm (1.8 in) | 28 October 2013 |
| Nov | 50.8 mm (2.0 in) | 28 November 2019 |
| Dec | 66.0 mm (2.6 in) | 21 December 1999 |
Period of Record Coverage
1996 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1996 | 76 | 21% | No |
| 1997 | 349 | 96% | Yes |
| 1998 | 353 | 97% | Yes |
| 1999 | 201 | 55% | No |
| 2000 | 186 | 51% | No |
| 2001 | 263 | 72% | No |
| 2002 | 350 | 96% | Yes |
| 2003 | 346 | 95% | Yes |
| 2004 | 326 | 89% | No |
| 2005 | 339 | 93% | Yes |
| 2006 | 347 | 95% | Yes |
| 2007 | 364 | 100% | Yes |
| 2008 | 366 | 100% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 358 | 98% | Yes |
| 2013 | 364 | 100% | Yes |
| 2014 | 356 | 98% | Yes |
| 2015 | 361 | 99% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 362 | 99% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 360 | 99% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 363 | 99% | Yes |
| 2024 | 352 | 96% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 278 | 76% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 15 September 2026 | Susitna Valley High, US | daily rain (Provisional) | 33.0 mm (1.3 in) | 2.5 mm (0.10 in) | 13 years | 10 of 100 (Routine) |
| 3 August 2026 | Susitna Valley High, US | daily rain | 35.6 mm (1.4 in) | 22.9 mm (0.9 in) | 8 years | 29 of 100 (Routine) |
| 27 July 2026 | Susitna Valley High, US | daily rain | 7.6 mm (0.30 in) | 2.5 mm (0.10 in) | 24 years | 14 of 100 (Routine) |
| 22 July 2026 | Susitna Valley High, US | daily rain | 25.4 mm (1.0 in) | 2.5 mm (0.10 in) | 36 years | 18 of 100 (Routine) |
| 20 July 2026 | Susitna Valley High, US | daily rain | 35.6 mm (1.4 in) | 17.8 mm (0.7 in) | 16 years | 34 of 100 (Routine) |
| 14 July 2026 | Susitna Valley High, US | daily rain | 27.9 mm (1.1 in) | 12.7 mm (0.5 in) | 3 years | 22 of 100 (Routine) |
| 23 June 2026 | Susitna Valley High, US | daily rain | 17.8 mm (0.7 in) | 5.1 mm (0.20 in) | 31 years | 20 of 100 (Routine) |
| 10 May 2026 | Susitna Valley High, US | daily rain | 7.6 mm (0.30 in) | 2.5 mm (0.10 in) | 36 years | 19 of 100 (Routine) |
| 9 May 2026 | Susitna Valley High, US | daily rain (Tie) | 5.1 mm (0.20 in) | tie | 24 years | 2 of 100 (Routine) |
| 6 May 2026 | Susitna Valley High, US | daily rain (Tie) | 12.7 mm (0.5 in) | tie | 12 years | 1 of 100 (Routine) |
| 4 May 2026 | Susitna Valley High, US | daily rain | 12.7 mm (0.5 in) | 2.5 mm (0.10 in) | 31 years | 18 of 100 (Routine) |
| 1 May 2026 | Susitna Valley High, US | daily rain | 17.8 mm (0.7 in) | 7.6 mm (0.30 in) | 20 years | 20 of 100 (Routine) |
| 19 April 2026 | Susitna Valley High, US | daily rain | 22.9 mm (0.9 in) | 2.6 mm (0.10 in) | 24 years | 15 of 100 (Routine) |
| 16 April 2026 | Susitna Valley High, US | daily rain (Tie) | 7.6 mm (0.30 in) | tie | 11 years | 1 of 100 (Routine) |
| 27 January 2026 | Susitna Valley High, US | daily rain (Tie) | 17.8 mm (0.7 in) | tie | 24 years | 2 of 100 (Routine) |
| 15 January 2026 | Susitna Valley High, US | daily rain | 17.8 mm (0.7 in) | 5.1 mm (0.20 in) | 36 years | 20 of 100 (Routine) |
| 11 January 2026 | Susitna Valley High, US | daily rain | 12.7 mm (0.5 in) | 5.1 mm (0.20 in) | 19 years | 16 of 100 (Routine) |
| 10 January 2026 | Susitna Valley High, US | daily rain | 15.2 mm (0.6 in) | 2.5 mm (0.10 in) | 19 years | 12 of 100 (Routine) |
| 6 January 2026 | Susitna Valley High, US | daily rain | 12.7 mm (0.5 in) | 2.5 mm (0.10 in) | 16 years | 11 of 100 (Routine) |
| 5 January 2026 | Susitna Valley High, US | daily rain | 10.2 mm (0.4 in) | 2.6 mm (0.10 in) | 14 years | 11 of 100 (Routine) |
Climate Trend
24 complete years, 1997 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1997 | 3.4 C | +2.33 C |
| 1998 | 2.0 C | +0.95 C |
| 2003 | 1.6 C | +0.49 C |
| 2005 | 1.6 C | +0.47 C |
| 2006 | -0.5 C | -1.59 C |
| 2007 | 0.6 C | -0.51 C |
| 2008 | -0.7 C | -1.78 C |
| 2009 | 0.0 C | -1.08 C |
| 2010 | 0.8 C | -0.33 C |
| 2011 | 0.1 C | -0.95 C |
| 2012 | -0.8 C | -1.93 C |
| 2013 | 0.9 C | -0.17 C |
| 2014 | 1.9 C | +0.81 C |
| 2015 | 1.5 C | +0.43 C |
| 2016 | 2.5 C | +1.45 C |
| 2017 | 0.9 C | -0.19 C |
| 2018 | 1.6 C | +0.54 C |
| 2019 | 2.9 C | +1.85 C |
| 2020 | 0.1 C | -1.04 C |
| 2021 | -0.4 C | -1.45 C |
| 2022 | 1.6 C | +0.53 C |
| 2023 | 1.2 C | +0.07 C |
| 2024 | 1.0 C | -0.08 C |
| 2025 | 2.2 C | +1.08 C |
This station does not have enough complete years (30 are needed) to fit a temperature trend.
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
1987 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 35.9 C (96.6 F) | 2013 | 29.4 C (84.9 F) | 31 |
| Coldest night (TNn) | -39.2 C (-38.6 F) | 2017 | -35.5 C (-31.9 F) | 31 |
| Wettest day (Rx1day) | 111.8 mm (4.4 in) | 2004 | 36.9 mm (1.5 in) | 40 |
| Wettest five days (Rx5day) | 172.8 mm (6.8 in) | 2012 | 71.1 mm (2.8 in) | 40 |
| Longest dry spell (CDD) | 71 days | 2022 | 25 days | 40 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1987 | n/a |
| 1988 | n/a |
| 1989 | n/a |
| 1990 | n/a |
| 1991 | n/a |
| 1992 | n/a |
| 1993 | n/a |
| 1994 | n/a |
| 1995 | n/a |
| 1996 | 5.0 C (41.0 F) |
| 1997 | 34.0 C (93.2 F) |
| 1998 | 31.0 C (87.8 F) |
| 1999 | 35.5 C (95.9 F) |
| 2000 | 30.1 C (86.2 F) |
| 2001 | 33.8 C (92.8 F) |
| 2002 | 29.8 C (85.6 F) |
| 2003 | 29.5 C (85.1 F) |
| 2004 | 31.1 C (88.0 F) |
| 2005 | 29.7 C (85.5 F) |
| 2006 | 27.8 C (82.0 F) |
| 2007 | 31.3 C (88.3 F) |
| 2008 | 25.8 C (78.4 F) |
| 2009 | 31.1 C (88.0 F) |
| 2010 | 25.8 C (78.4 F) |
| 2011 | 28.6 C (83.5 F) |
| 2012 | 26.7 C (80.1 F) |
| 2013 | 35.9 C (96.6 F) |
| 2014 | 29.8 C (85.6 F) |
| 2015 | 32.5 C (90.5 F) |
| 2016 | 28.2 C (82.8 F) |
| 2017 | 27.9 C (82.2 F) |
| 2018 | 28.3 C (82.9 F) |
| 2019 | 33.1 C (91.6 F) |
| 2020 | 27.8 C (82.0 F) |
| 2021 | 29.4 C (84.9 F) |
| 2022 | 28.9 C (84.0 F) |
| 2023 | 27.2 C (81.0 F) |
| 2024 | 27.8 C (82.0 F) |
| 2025 | 26.7 C (80.1 F) |
| 2026 | 26.1 C (79.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1987 | n/a |
| 1988 | n/a |
| 1989 | n/a |
| 1990 | n/a |
| 1991 | n/a |
| 1992 | n/a |
| 1993 | n/a |
| 1994 | n/a |
| 1995 | n/a |
| 1996 | -33.0 C (-27.4 F) |
| 1997 | -36.0 C (-32.8 F) |
| 1998 | -30.0 C (-22.0 F) |
| 1999 | -39.0 C (-38.2 F) |
| 2000 | -22.1 C (-7.8 F) |
| 2001 | -36.6 C (-33.9 F) |
| 2002 | -33.6 C (-28.5 F) |
| 2003 | -35.7 C (-32.3 F) |
| 2004 | -38.0 C (-36.4 F) |
| 2005 | -35.7 C (-32.3 F) |
| 2006 | -37.2 C (-35.0 F) |
| 2007 | -36.8 C (-34.2 F) |
| 2008 | -37.4 C (-35.3 F) |
| 2009 | -38.0 C (-36.4 F) |
| 2010 | -29.8 C (-21.6 F) |
| 2011 | -37.1 C (-34.8 F) |
| 2012 | -35.5 C (-31.9 F) |
| 2013 | -34.8 C (-30.6 F) |
| 2014 | -27.3 C (-17.1 F) |
| 2015 | -32.6 C (-26.7 F) |
| 2016 | -29.2 C (-20.6 F) |
| 2017 | -39.2 C (-38.6 F) |
| 2018 | -30.8 C (-23.4 F) |
| 2019 | -33.1 C (-27.6 F) |
| 2020 | -35.6 C (-32.1 F) |
| 2021 | -32.2 C (-26.0 F) |
| 2022 | -33.9 C (-29.0 F) |
| 2023 | -32.8 C (-27.0 F) |
| 2024 | -38.9 C (-38.0 F) |
| 2025 | -30.6 C (-23.1 F) |
| 2026 | -38.9 C (-38.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1987 | 33.0 mm (1.3 in) |
| 1988 | 30.5 mm (1.2 in) |
| 1989 | 55.9 mm (2.2 in) |
| 1990 | 48.3 mm (1.9 in) |
| 1991 | 40.6 mm (1.6 in) |
| 1992 | 38.1 mm (1.5 in) |
| 1993 | 66.0 mm (2.6 in) |
| 1994 | 35.6 mm (1.4 in) |
| 1995 | 27.9 mm (1.1 in) |
| 1996 | 35.6 mm (1.4 in) |
| 1997 | 38.1 mm (1.5 in) |
| 1998 | 25.4 mm (1.0 in) |
| 1999 | 66.0 mm (2.6 in) |
| 2000 | 33.0 mm (1.3 in) |
| 2001 | 22.9 mm (0.9 in) |
| 2002 | 33.0 mm (1.3 in) |
| 2003 | 33.0 mm (1.3 in) |
| 2004 | 111.8 mm (4.4 in) |
| 2005 | 53.3 mm (2.1 in) |
| 2006 | 94.0 mm (3.7 in) |
| 2007 | 38.1 mm (1.5 in) |
| 2008 | 33.0 mm (1.3 in) |
| 2009 | 27.9 mm (1.1 in) |
| 2010 | 33.0 mm (1.3 in) |
| 2011 | 35.6 mm (1.4 in) |
| 2012 | 61.0 mm (2.4 in) |
| 2013 | 50.8 mm (2.0 in) |
| 2014 | 33.0 mm (1.3 in) |
| 2015 | 45.7 mm (1.8 in) |
| 2016 | 33.0 mm (1.3 in) |
| 2017 | 27.9 mm (1.1 in) |
| 2018 | 30.5 mm (1.2 in) |
| 2019 | 50.8 mm (2.0 in) |
| 2020 | 50.8 mm (2.0 in) |
| 2021 | 33.0 mm (1.3 in) |
| 2022 | 38.1 mm (1.5 in) |
| 2023 | 45.7 mm (1.8 in) |
| 2024 | 33.0 mm (1.3 in) |
| 2025 | 50.8 mm (2.0 in) |
| 2026 | 43.2 mm (1.7 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1987 | 50.8 mm (2.0 in) |
| 1988 | 71.1 mm (2.8 in) |
| 1989 | 137.2 mm (5.4 in) |
| 1990 | 124.5 mm (4.9 in) |
| 1991 | 76.1 mm (3.0 in) |
| 1992 | 50.8 mm (2.0 in) |
| 1993 | 91.4 mm (3.6 in) |
| 1994 | 48.3 mm (1.9 in) |
| 1995 | 53.4 mm (2.1 in) |
| 1996 | 61.0 mm (2.4 in) |
| 1997 | 71.0 mm (2.8 in) |
| 1998 | 45.7 mm (1.8 in) |
| 1999 | 127.0 mm (5.0 in) |
| 2000 | 58.4 mm (2.3 in) |
| 2001 | 45.7 mm (1.8 in) |
| 2002 | 58.4 mm (2.3 in) |
| 2003 | 68.6 mm (2.7 in) |
| 2004 | 149.9 mm (5.9 in) |
| 2005 | 106.6 mm (4.2 in) |
| 2006 | 162.6 mm (6.4 in) |
| 2007 | 58.4 mm (2.3 in) |
| 2008 | 58.3 mm (2.3 in) |
| 2009 | 50.7 mm (2.0 in) |
| 2010 | 66.0 mm (2.6 in) |
| 2011 | 68.7 mm (2.7 in) |
| 2012 | 172.8 mm (6.8 in) |
| 2013 | 81.4 mm (3.2 in) |
| 2014 | 68.6 mm (2.7 in) |
| 2015 | 132.0 mm (5.2 in) |
| 2016 | 73.6 mm (2.9 in) |
| 2017 | 53.3 mm (2.1 in) |
| 2018 | 63.5 mm (2.5 in) |
| 2019 | 109.1 mm (4.3 in) |
| 2020 | 76.2 mm (3.0 in) |
| 2021 | 53.3 mm (2.1 in) |
| 2022 | 106.6 mm (4.2 in) |
| 2023 | 86.4 mm (3.4 in) |
| 2024 | 71.1 mm (2.8 in) |
| 2025 | 106.7 mm (4.2 in) |
| 2026 | 122.0 mm (4.8 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1987 | 10 days |
| 1988 | 22 days |
| 1989 | 22 days |
| 1990 | 15 days |
| 1991 | 14 days |
| 1992 | 19 days |
| 1993 | 28 days |
| 1994 | 14 days |
| 1995 | 32 days |
| 1996 | 28 days |
| 1997 | 32 days |
| 1998 | 26 days |
| 1999 | 31 days |
| 2000 | 43 days |
| 2001 | 32 days |
| 2002 | 27 days |
| 2003 | 20 days |
| 2004 | 20 days |
| 2005 | 21 days |
| 2006 | 31 days |
| 2007 | 31 days |
| 2008 | 20 days |
| 2009 | 22 days |
| 2010 | 27 days |
| 2011 | 29 days |
| 2012 | 25 days |
| 2013 | 23 days |
| 2014 | 24 days |
| 2015 | 24 days |
| 2016 | 30 days |
| 2017 | 48 days |
| 2018 | 35 days |
| 2019 | 20 days |
| 2020 | 19 days |
| 2021 | 24 days |
| 2022 | 71 days |
| 2023 | 22 days |
| 2024 | 19 days |
| 2025 | 27 days |
| 2026 | 32 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
24 years with a frostAcross 24 years with a frost, the median last spring frost at Susitna Valley High falls on 19 May and the median first autumn frost on 16 September, which leaves a median of 119 days between them.
| Measure | Median, all years | Earliest period | Recent period (1997 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 19 May | n/a | 19 May | n/a | n/a |
| First autumn frost | 16 September | n/a | 16 September | n/a | n/a |
| Growing days | 119 days | n/a | 119 days | n/a | n/a |
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
38 years, 1988 to 2025A day with at least 37.8 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 122.3 mm (4.8 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 37.8 mm (1.5 in) | |
| 5 years | 51.1 mm (2.0 in) | |
| 10 years | 62.8 mm (2.5 in) | |
| 25 years | 81.9 mm (3.2 in) | |
| 50 years | 100.0 mm (3.9 in) | Longer than the 38 years of record |
| 100 years | 122.3 mm (4.8 in) | Longer than the 38 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, 38 years of values from 1988 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: 111.8 mm (4.4 in) in 2004; 94.0 mm (3.7 in) in 2006; 66.0 mm (2.6 in) in 1993.
Download the Data
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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-16).