Upper Chena Weather Records (USS0044Q07S)
Record envelope, standing records and threshold days for Upper Chena (USS0044Q07S), Alaska, United States, with 43 years of record.
Key Facts for Upper Chena
- Upper Chena (USS0044Q07S) is a weather station in Alaska, United States at 65.10 latitude and -144.93 longitude, 869 m (2,850 ft) above sea level.
- The station reports from 1984 to 2026, 43 years of record.
- 1,464 records set at Upper Chena still stand.
- Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
- Upper Chena set a daily record low maximum temperature of -5.6 C (21.9 F) on 2 October 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, 65.10 latitude, -144.93 longitude.
- Elevation: 869 m (2,850 ft).
- Period of record: 1984 to 2026, 43 years.
- Eligible elements: tmax, tmin, prcp.
Daily Record Envelope and 2026
20 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 9.7 C (49.5 F) | -43.0 C (-45.4 F) | 5.6 C (42.1 F) | -36.1 C (-33.0 F) |
| Feb | 6.9 C (44.4 F) | -41.0 C (-41.8 F) | -3.3 C (26.1 F) | -36.7 C (-34.1 F) |
| Mar | 13.0 C (55.4 F) | -35.6 C (-32.1 F) | -3.3 C (26.1 F) | -35.6 C (-32.1 F) |
| Apr | 19.3 C (66.7 F) | -32.8 C (-27.0 F) | 10.6 C (51.1 F) | -18.9 C (-2.0 F) |
| May | 26.0 C (78.8 F) | -18.0 C (-0.4 F) | 12.8 C (55.0 F) | -3.9 C (25.0 F) |
| Jun | 30.0 C (86.0 F) | -8.9 C (16.0 F) | 23.3 C (73.9 F) | 0.0 C (32.0 F) |
| Jul | 28.0 C (82.4 F) | -2.3 C (27.9 F) | 26.7 C (80.1 F) | -1.1 C (30.0 F) |
| Aug | 30.0 C (86.0 F) | -9.0 C (15.8 F) | 23.9 C (75.0 F) | -0.6 C (30.9 F) |
| Sep | 23.0 C (73.4 F) | -18.0 C (-0.4 F) | 17.2 C (63.0 F) | -7.2 C (19.0 F) |
| Oct | 21.4 C (70.5 F) | -30.0 C (-22.0 F) | 6.7 C (44.1 F) | -12.8 C (9.0 F) |
| Nov | 7.1 C (44.8 F) | -36.0 C (-32.8 F) | n/a | n/a |
| Dec | 7.1 C (44.8 F) | -37.3 C (-35.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1987 | 26 |
| 1988 | 24 |
| 1989 | 47 |
| 1990 | 40 |
| 1991 | 55 |
| 1992 | 77 |
| 1993 | 35 |
| 1994 | 88 |
| 1995 | 83 |
| 1996 | 44 |
| 1997 | 45 |
| 1998 | 26 |
| 1999 | 19 |
| 2000 | 21 |
| 2001 | 34 |
| 2002 | 69 |
| 2003 | 66 |
| 2004 | 53 |
| 2005 | 42 |
| 2006 | 18 |
| 2008 | 7 |
| 2009 | 47 |
| 2010 | 23 |
| 2011 | 28 |
| 2012 | 29 |
| 2013 | 69 |
| 2014 | 51 |
| 2015 | 46 |
| 2016 | 17 |
| 2017 | 32 |
| 2018 | 13 |
| 2019 | 25 |
| 2020 | 26 |
| 2021 | 34 |
| 2022 | 22 |
| 2024 | 6 |
| 2025 | 52 |
| 2026 | 25 |
Wettest Day of Each Month
Aug: 106.7 mm (4.2 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 25.4 mm (1.0 in) | 5 January 2005 |
| Feb | 25.4 mm (1.0 in) | 12 February 2018 |
| Mar | 25.4 mm (1.0 in) | 2 March 2003 |
| Apr | 30.5 mm (1.2 in) | 27 April 2002 |
| May | 38.1 mm (1.5 in) | 22 May 2017 |
| Jun | 40.6 mm (1.6 in) | 4 June 2013 |
| Jul | 73.7 mm (2.9 in) | 27 July 2003 |
| Aug | 106.7 mm (4.2 in) | 31 August 2020 |
| Sep | 43.2 mm (1.7 in) | 2 September 2014 |
| Oct | 25.4 mm (1.0 in) | 10 October 2017 |
| Nov | 33.0 mm (1.3 in) | 10 November 2013 |
| Dec | 25.4 mm (1.0 in) | 29 December 2016 |
Period of Record Coverage
1987 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1987 | 245 | 67% | No |
| 1988 | 364 | 99% | Yes |
| 1989 | 217 | 59% | No |
| 1990 | 246 | 67% | No |
| 1991 | 360 | 99% | Yes |
| 1992 | 365 | 100% | Yes |
| 1993 | 362 | 99% | Yes |
| 1994 | 358 | 98% | Yes |
| 1995 | 365 | 100% | Yes |
| 1996 | 365 | 100% | Yes |
| 1997 | 354 | 97% | Yes |
| 1998 | 362 | 99% | Yes |
| 1999 | 105 | 29% | No |
| 2000 | 163 | 45% | No |
| 2001 | 307 | 84% | No |
| 2002 | 364 | 100% | Yes |
| 2003 | 365 | 100% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 362 | 99% | Yes |
| 2006 | 255 | 70% | No |
| 2008 | 119 | 33% | No |
| 2009 | 365 | 100% | Yes |
| 2010 | 363 | 99% | Yes |
| 2011 | 361 | 99% | Yes |
| 2012 | 361 | 99% | Yes |
| 2013 | 361 | 99% | Yes |
| 2014 | 363 | 99% | Yes |
| 2015 | 364 | 100% | Yes |
| 2016 | 364 | 99% | Yes |
| 2017 | 352 | 96% | Yes |
| 2018 | 362 | 99% | Yes |
| 2019 | 280 | 77% | No |
| 2020 | 239 | 65% | No |
| 2021 | 362 | 99% | Yes |
| 2022 | 360 | 99% | Yes |
| 2023 | 13 | 4% | No |
| 2024 | 100 | 27% | No |
| 2025 | 363 | 99% | Yes |
| 2026 | 285 | 78% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 2 October 2026 | Upper Chena, US | daily low max (Provisional) | -5.6 C (21.9 F) | 1.6 C (2.9 F) | 36 years | 16 of 100 (Routine) |
| 1 October 2026 | Upper Chena, US | daily rain (Tie, Provisional) | 5.1 mm (0.20 in) | tie | 13 years | 2 of 100 (Routine) |
| 17 September 2026 | Upper Chena, US | daily rain (Provisional) | 17.8 mm (0.7 in) | 2.6 mm (0.10 in) | 3 years | 8 of 100 (Routine) |
| 16 September 2026 | Upper Chena, US | daily rain (Provisional) | 27.9 mm (1.1 in) | 22.8 mm (0.9 in) | 9 years | 43 of 100 (Notable) |
| 12 September 2026 | Upper Chena, US | daily rain (Provisional) | 17.8 mm (0.7 in) | 2.6 mm (0.10 in) | 35 years | 18 of 100 (Routine) |
| 11 September 2026 | Upper Chena, US | daily high min (Provisional) | 6.1 C (43.0 F) | 2.1 C (3.8 F) | 35 years | 19 of 100 (Routine) |
| 9 September 2026 | Upper Chena, US | daily rain (Provisional) | 22.9 mm (0.9 in) | 10.2 mm (0.4 in) | 5 years | 20 of 100 (Routine) |
| 8 September 2026 | Upper Chena, US | daily high min (Provisional) | 6.7 C (44.1 F) | 1.5 C (2.7 F) | 16 years | 11 of 100 (Routine) |
| 7 September 2026 | Upper Chena, US | daily high min (Provisional) | 5.0 C (41.0 F) | 1.1 C (2.0 F) | 0 years | 6 of 100 (Routine) |
| 6 September 2026 | Upper Chena, US | daily high min (Provisional) | 5.6 C (42.1 F) | 0.6 C (1.1 F) | 35 years | 15 of 100 (Routine) |
| 5 September 2026 | Upper Chena, US | daily high min (Provisional) | 7.2 C (45.0 F) | 0.7 C (1.3 F) | 24 years | 12 of 100 (Routine) |
| 5 September 2026 | Upper Chena, US | daily rain (Tie, Provisional) | 15.2 mm (0.6 in) | tie | 36 years | 3 of 100 (Routine) |
| 2 September 2026 | Upper Chena, US | daily low max (Provisional) | 2.2 C (36.0 F) | 0.8 C (1.4 F) | 31 years | 14 of 100 (Routine) |
| 21 August 2026 | Upper Chena, US | daily high min (Provisional) | 7.8 C (46.0 F) | 1.2 C (2.2 F) | 21 years | 13 of 100 (Routine) |
| 14 August 2026 | Upper Chena, US | daily high min | 11.1 C (52.0 F) | 2.0 C (3.6 F) | 21 years | 16 of 100 (Routine) |
| 28 July 2026 | Upper Chena, US | daily low min | 0.6 C (33.1 F) | 0.1 C (0.2 F) | 25 years | 11 of 100 (Routine) |
| 25 July 2026 | Upper Chena, US | daily low min | -1.1 C (30.0 F) | 0.1 C (0.2 F) | 29 years | 12 of 100 (Routine) |
| 24 July 2026 | Upper Chena, US | daily low min | -0.6 C (30.9 F) | 1.6 C (2.9 F) | 16 years | 15 of 100 (Routine) |
| 20 July 2026 | Upper Chena, US | daily high max | 26.7 C (80.1 F) | 0.3 C (0.5 F) | 23 years | 10 of 100 (Routine) |
| 28 June 2026 | Upper Chena, US | daily rain | 25.4 mm (1.0 in) | 5.1 mm (0.20 in) | 13 years | 16 of 100 (Routine) |
Climate Trend
25 complete years, 1988 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1988 | -2.7 C | +0.28 C |
| 1991 | -2.8 C | +0.24 C |
| 1992 | -4.4 C | -1.35 C |
| 1993 | -1.3 C | +1.67 C |
| 1994 | -3.2 C | -0.20 C |
| 1995 | -2.4 C | +0.57 C |
| 1996 | -4.5 C | -1.51 C |
| 1997 | -2.5 C | +0.48 C |
| 1998 | -2.0 C | +0.96 C |
| 2002 | -2.2 C | +0.85 C |
| 2003 | -2.9 C | +0.08 C |
| 2004 | -2.8 C | +0.21 C |
| 2005 | -2.4 C | +0.59 C |
| 2009 | -3.8 C | -0.76 C |
| 2010 | -2.9 C | +0.10 C |
| 2011 | -3.9 C | -0.91 C |
| 2012 | -5.1 C | -2.10 C |
| 2013 | -4.1 C | -1.14 C |
| 2014 | -2.4 C | +0.57 C |
| 2015 | -2.6 C | +0.44 C |
| 2016 | -1.4 C | +1.57 C |
| 2018 | -2.5 C | +0.52 C |
| 2021 | -4.5 C | -1.48 C |
| 2022 | -3.3 C | -0.31 C |
| 2025 | -2.3 C | +0.75 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
1984 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 30.0 C (86.0 F) | 1991 | 26.4 C (79.5 F) | 39 |
| Coldest night (TNn) | -43.0 C (-45.4 F) | 1989 | -35.0 C (-31.0 F) | 39 |
| Wettest day (Rx1day) | 106.7 mm (4.2 in) | 2020 | 29.2 mm (1.1 in) | 40 |
| Wettest five days (Rx5day) | 154.9 mm (6.1 in) | 2020 | 66.1 mm (2.6 in) | 40 |
| Longest dry spell (CDD) | 73 days | 1995 | 24 days | 40 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1984 | n/a |
| 1987 | 28.0 C (82.4 F) |
| 1988 | 26.0 C (78.8 F) |
| 1989 | 27.0 C (80.6 F) |
| 1990 | 29.0 C (84.2 F) |
| 1991 | 30.0 C (86.0 F) |
| 1992 | 30.0 C (86.0 F) |
| 1993 | 28.0 C (82.4 F) |
| 1994 | 30.0 C (86.0 F) |
| 1995 | 26.0 C (78.8 F) |
| 1996 | 24.0 C (75.2 F) |
| 1997 | 27.0 C (80.6 F) |
| 1998 | 28.0 C (82.4 F) |
| 1999 | 15.0 C (59.0 F) |
| 2000 | 23.5 C (74.3 F) |
| 2001 | 25.8 C (78.4 F) |
| 2002 | 26.5 C (79.7 F) |
| 2003 | 26.4 C (79.5 F) |
| 2004 | 28.4 C (83.1 F) |
| 2005 | 27.7 C (81.9 F) |
| 2006 | 25.8 C (78.4 F) |
| 2008 | 16.2 C (61.2 F) |
| 2009 | 26.4 C (79.5 F) |
| 2010 | 29.3 C (84.7 F) |
| 2011 | 23.9 C (75.0 F) |
| 2012 | 23.5 C (74.3 F) |
| 2013 | 26.6 C (79.9 F) |
| 2014 | 23.1 C (73.6 F) |
| 2015 | 26.3 C (79.3 F) |
| 2016 | 25.8 C (78.4 F) |
| 2017 | 25.5 C (77.9 F) |
| 2018 | 26.5 C (79.7 F) |
| 2019 | 25.9 C (78.6 F) |
| 2020 | 24.4 C (75.9 F) |
| 2021 | 27.8 C (82.0 F) |
| 2022 | 26.7 C (80.1 F) |
| 2023 | 3.9 C (39.0 F) |
| 2024 | 9.4 C (48.9 F) |
| 2025 | 26.1 C (79.0 F) |
| 2026 | 26.7 C (80.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1984 | n/a |
| 1987 | -28.0 C (-18.4 F) |
| 1988 | -33.0 C (-27.4 F) |
| 1989 | -43.0 C (-45.4 F) |
| 1990 | -36.0 C (-32.8 F) |
| 1991 | -37.0 C (-34.6 F) |
| 1992 | -34.0 C (-29.2 F) |
| 1993 | -39.0 C (-38.2 F) |
| 1994 | -34.0 C (-29.2 F) |
| 1995 | -35.0 C (-31.0 F) |
| 1996 | -35.0 C (-31.0 F) |
| 1997 | -39.0 C (-38.2 F) |
| 1998 | -33.0 C (-27.4 F) |
| 1999 | -41.0 C (-41.8 F) |
| 2000 | -28.2 C (-18.8 F) |
| 2001 | -30.4 C (-22.7 F) |
| 2002 | -36.5 C (-33.7 F) |
| 2003 | -33.7 C (-28.7 F) |
| 2004 | -38.2 C (-36.8 F) |
| 2005 | -37.3 C (-35.1 F) |
| 2006 | -33.5 C (-28.3 F) |
| 2008 | -33.4 C (-28.1 F) |
| 2009 | -35.8 C (-32.4 F) |
| 2010 | -34.0 C (-29.2 F) |
| 2011 | -35.3 C (-31.5 F) |
| 2012 | -38.1 C (-36.6 F) |
| 2013 | -36.1 C (-33.0 F) |
| 2014 | -32.3 C (-26.1 F) |
| 2015 | -35.3 C (-31.5 F) |
| 2016 | -30.1 C (-22.2 F) |
| 2017 | -36.0 C (-32.8 F) |
| 2018 | -32.7 C (-26.9 F) |
| 2019 | -36.0 C (-32.8 F) |
| 2020 | -30.6 C (-23.1 F) |
| 2021 | -35.6 C (-32.1 F) |
| 2022 | -34.4 C (-29.9 F) |
| 2023 | -22.2 C (-8.0 F) |
| 2024 | -30.0 C (-22.0 F) |
| 2025 | -35.0 C (-31.0 F) |
| 2026 | -36.7 C (-34.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1984 | 33.0 mm (1.3 in) |
| 1987 | 27.9 mm (1.1 in) |
| 1988 | 22.9 mm (0.9 in) |
| 1989 | 27.9 mm (1.1 in) |
| 1990 | 27.9 mm (1.1 in) |
| 1991 | 66.0 mm (2.6 in) |
| 1992 | 20.3 mm (0.8 in) |
| 1993 | 33.0 mm (1.3 in) |
| 1994 | 15.2 mm (0.6 in) |
| 1995 | 35.6 mm (1.4 in) |
| 1996 | 25.4 mm (1.0 in) |
| 1997 | 17.8 mm (0.7 in) |
| 1998 | 20.3 mm (0.8 in) |
| 1999 | 5.1 mm (0.20 in) |
| 2000 | 12.7 mm (0.5 in) |
| 2001 | 30.5 mm (1.2 in) |
| 2002 | 40.6 mm (1.6 in) |
| 2003 | 73.7 mm (2.9 in) |
| 2004 | 22.9 mm (0.9 in) |
| 2005 | 25.4 mm (1.0 in) |
| 2006 | 27.9 mm (1.1 in) |
| 2008 | 10.2 mm (0.4 in) |
| 2009 | 30.5 mm (1.2 in) |
| 2010 | 25.4 mm (1.0 in) |
| 2011 | 30.5 mm (1.2 in) |
| 2012 | 33.0 mm (1.3 in) |
| 2013 | 40.6 mm (1.6 in) |
| 2014 | 43.2 mm (1.7 in) |
| 2015 | 35.6 mm (1.4 in) |
| 2016 | 33.0 mm (1.3 in) |
| 2017 | 38.1 mm (1.5 in) |
| 2018 | 45.7 mm (1.8 in) |
| 2019 | 35.6 mm (1.4 in) |
| 2020 | 106.7 mm (4.2 in) |
| 2021 | 25.4 mm (1.0 in) |
| 2022 | 48.3 mm (1.9 in) |
| 2023 | 40.6 mm (1.6 in) |
| 2024 | 27.9 mm (1.1 in) |
| 2025 | 25.4 mm (1.0 in) |
| 2026 | 27.9 mm (1.1 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1984 | 83.7 mm (3.3 in) |
| 1987 | 40.5 mm (1.6 in) |
| 1988 | 40.6 mm (1.6 in) |
| 1989 | 38.0 mm (1.5 in) |
| 1990 | 68.5 mm (2.7 in) |
| 1991 | 73.6 mm (2.9 in) |
| 1992 | 40.6 mm (1.6 in) |
| 1993 | 68.6 mm (2.7 in) |
| 1994 | 40.6 mm (1.6 in) |
| 1995 | 86.5 mm (3.4 in) |
| 1996 | 43.1 mm (1.7 in) |
| 1997 | 38.1 mm (1.5 in) |
| 1998 | 35.5 mm (1.4 in) |
| 1999 | 7.6 mm (0.30 in) |
| 2000 | 25.4 mm (1.0 in) |
| 2001 | 63.5 mm (2.5 in) |
| 2002 | 106.6 mm (4.2 in) |
| 2003 | 111.8 mm (4.4 in) |
| 2004 | 48.3 mm (1.9 in) |
| 2005 | 66.1 mm (2.6 in) |
| 2006 | 55.8 mm (2.2 in) |
| 2008 | 12.7 mm (0.5 in) |
| 2009 | 68.6 mm (2.7 in) |
| 2010 | 45.7 mm (1.8 in) |
| 2011 | 53.4 mm (2.1 in) |
| 2012 | 68.5 mm (2.7 in) |
| 2013 | 66.0 mm (2.6 in) |
| 2014 | 86.4 mm (3.4 in) |
| 2015 | 86.3 mm (3.4 in) |
| 2016 | 96.6 mm (3.8 in) |
| 2017 | 83.9 mm (3.3 in) |
| 2018 | 83.9 mm (3.3 in) |
| 2019 | 91.5 mm (3.6 in) |
| 2020 | 154.9 mm (6.1 in) |
| 2021 | 58.4 mm (2.3 in) |
| 2022 | 50.8 mm (2.0 in) |
| 2023 | 76.2 mm (3.0 in) |
| 2024 | 96.5 mm (3.8 in) |
| 2025 | 48.2 mm (1.9 in) |
| 2026 | 66.1 mm (2.6 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1984 | 18 days |
| 1987 | 29 days |
| 1988 | 19 days |
| 1989 | 23 days |
| 1990 | 16 days |
| 1991 | 45 days |
| 1992 | 25 days |
| 1993 | 69 days |
| 1994 | 61 days |
| 1995 | 73 days |
| 1996 | 22 days |
| 1997 | 36 days |
| 1998 | 22 days |
| 1999 | 20 days |
| 2000 | 24 days |
| 2001 | 26 days |
| 2002 | 23 days |
| 2003 | 21 days |
| 2004 | 24 days |
| 2005 | 26 days |
| 2006 | 16 days |
| 2008 | 9 days |
| 2009 | 17 days |
| 2010 | 29 days |
| 2011 | 30 days |
| 2012 | 36 days |
| 2013 | 21 days |
| 2014 | 37 days |
| 2015 | 33 days |
| 2016 | 57 days |
| 2017 | 22 days |
| 2018 | 18 days |
| 2019 | 24 days |
| 2020 | 31 days |
| 2021 | 21 days |
| 2022 | 31 days |
| 2023 | 29 days |
| 2024 | 17 days |
| 2025 | 11 days |
| 2026 | 33 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
25 years with a frostAcross 25 years with a frost, the median last spring frost at Upper Chena falls on 11 June and the median first autumn frost on 9 August, which leaves a median of 62 days between them.
Fitted over all years, the growing season changes by +9.3 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1988 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 11 June | n/a | 11 June | n/a | -1.5 days per decade |
| First autumn frost | 9 August | n/a | 9 August | n/a | +7.8 days per decade |
| Growing days | 62 days | n/a | 62 days | n/a | +9.3 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.
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).