Delta Junction 20 SE Weather Records (USC00502352)
Record envelope, standing records and threshold days for Delta Junction 20 SE (USC00502352), Alaska, United States, with 47 years of record.
Key Facts for Delta Junction 20 SE
- Delta Junction 20 SE (USC00502352) is a weather station in Alaska, United States at 63.96 latitude and -145.10 longitude, 343 m (1,125 ft) above sea level.
- The station reports from 1980 to 2026, 47 years of record.
- 1,464 records set at Delta Junction 20 SE still stand.
- Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
- Delta Junction 20 SE set a daily record high minimum temperature of 9.4 C (48.9 F) on 23 August 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, 63.96 latitude, -145.10 longitude.
- Elevation: 343 m (1,125 ft).
- Period of record: 1980 to 2026, 47 years.
- Eligible elements: tmax, tmin, prcp, snow.
Daily Record Envelope and 2026
18 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 10.0 C (50.0 F) | -51.1 C (-60.0 F) | 6.1 C (43.0 F) | -48.9 C (-56.0 F) |
| Feb | 9.4 C (48.9 F) | -52.8 C (-63.0 F) | -2.8 C (27.0 F) | -49.4 C (-56.9 F) |
| Mar | 13.9 C (57.0 F) | -48.3 C (-54.9 F) | -1.7 C (28.9 F) | -48.3 C (-54.9 F) |
| Apr | 23.3 C (73.9 F) | -35.0 C (-31.0 F) | 13.3 C (55.9 F) | -23.9 C (-11.0 F) |
| May | 30.0 C (86.0 F) | -10.0 C (14.0 F) | 18.9 C (66.0 F) | -5.0 C (23.0 F) |
| Jun | 32.8 C (91.0 F) | -7.2 C (19.0 F) | 26.7 C (80.1 F) | 0.0 C (32.0 F) |
| Jul | 31.7 C (89.1 F) | -0.6 C (30.9 F) | 28.9 C (84.0 F) | 2.2 C (36.0 F) |
| Aug | 31.1 C (88.0 F) | -4.4 C (24.1 F) | 27.2 C (81.0 F) | 0.6 C (33.1 F) |
| Sep | 23.3 C (73.9 F) | -18.9 C (-2.0 F) | 12.8 C (55.0 F) | -1.7 C (28.9 F) |
| Oct | 24.4 C (75.9 F) | -37.8 C (-36.0 F) | n/a | n/a |
| Nov | 8.3 C (46.9 F) | -42.8 C (-45.0 F) | n/a | n/a |
| Dec | 13.3 C (55.9 F) | -48.3 C (-54.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1995 | 15 |
| 1996 | 51 |
| 1997 | 43 |
| 1998 | 36 |
| 1999 | 78 |
| 2000 | 49 |
| 2001 | 35 |
| 2002 | 70 |
| 2003 | 71 |
| 2004 | 74 |
| 2005 | 49 |
| 2006 | 53 |
| 2007 | 46 |
| 2008 | 46 |
| 2009 | 55 |
| 2010 | 34 |
| 2011 | 46 |
| 2012 | 44 |
| 2013 | 98 |
| 2014 | 49 |
| 2015 | 43 |
| 2016 | 46 |
| 2017 | 35 |
| 2018 | 20 |
| 2019 | 47 |
| 2020 | 25 |
| 2021 | 40 |
| 2022 | 23 |
| 2023 | 32 |
| 2024 | 26 |
| 2025 | 52 |
| 2026 | 33 |
Wettest Day of Each Month
Jul: 43.2 mm (1.7 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 8.9 mm (0.35 in) | 3 January 2004 |
| Feb | 14.2 mm (0.6 in) | 21 February 2018 |
| Mar | 8.9 mm (0.35 in) | 23 March 2020 |
| Apr | 14.5 mm (0.6 in) | 22 April 1999 |
| May | 32.5 mm (1.3 in) | 24 May 2000 |
| Jun | 41.4 mm (1.6 in) | 19 June 2014 |
| Jul | 43.2 mm (1.7 in) | 29 July 2008 |
| Aug | 38.6 mm (1.5 in) | 22 August 2001 |
| Sep | 27.9 mm (1.1 in) | 17 September 2007 |
| Oct | 22.9 mm (0.9 in) | 12 October 2019 |
| Nov | 14.2 mm (0.6 in) | 11 November 2013 |
| Dec | 10.7 mm (0.4 in) | 26 December 2021 |
Period of Record Coverage
1980 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1980 | 29 | 8% | No |
| 1995 | 58 | 16% | No |
| 1996 | 313 | 86% | No |
| 1997 | 346 | 95% | Yes |
| 1998 | 363 | 99% | Yes |
| 1999 | 365 | 100% | Yes |
| 2000 | 364 | 99% | Yes |
| 2001 | 334 | 92% | Yes |
| 2002 | 333 | 91% | Yes |
| 2003 | 333 | 91% | Yes |
| 2004 | 364 | 99% | Yes |
| 2005 | 363 | 99% | Yes |
| 2006 | 363 | 99% | Yes |
| 2007 | 364 | 100% | Yes |
| 2008 | 357 | 98% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 364 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 333 | 91% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 364 | 100% | Yes |
| 2026 | 246 | 67% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 23 August 2026 | Delta Junction 20 SE, US | daily high min (Provisional) | 9.4 C (48.9 F) | 1.1 C (2.0 F) | 20 years | 13 of 100 (Routine) |
| 17 August 2026 | Delta Junction 20 SE, US | daily high min (Provisional) | 11.7 C (53.1 F) | 1.7 C (3.1 F) | 24 years | 15 of 100 (Routine) |
| 15 August 2026 | Delta Junction 20 SE, US | daily high min | 12.2 C (54.0 F) | 0.5 C (0.9 F) | 19 years | 10 of 100 (Routine) |
| 28 July 2026 | Delta Junction 20 SE, US | daily low max (Tie) | 12.8 C (55.0 F) | tie | 27 years | 3 of 100 (Routine) |
| 25 July 2026 | Delta Junction 20 SE, US | daily rain | 18.3 mm (0.7 in) | 12.2 mm (0.5 in) | 24 years | 20 of 100 (Routine) |
| 25 July 2026 | Delta Junction 20 SE, US | daily low max | 10.0 C (50.0 F) | 5.6 C (10.1 F) | 4 years | 18 of 100 (Routine) |
| 21 July 2026 | Delta Junction 20 SE, US | daily high max (Tie) | 28.9 C (84.0 F) | tie | 4 years | 1 of 100 (Routine) |
| 10 July 2026 | Delta Junction 20 SE, US | daily low max | 12.2 C (54.0 F) | 5.0 C (9.0 F) | 12 years | 19 of 100 (Routine) |
| 10 July 2026 | Delta Junction 20 SE, US | daily rain | 9.4 mm (0.37 in) | 2.8 mm (0.11 in) | 29 years | 17 of 100 (Routine) |
| 9 July 2026 | Delta Junction 20 SE, US | daily rain | 24.9 mm (1.0 in) | 3.1 mm (0.12 in) | 12 years | 12 of 100 (Routine) |
| 24 June 2026 | Delta Junction 20 SE, US | daily rain | 13.7 mm (0.5 in) | 1.3 mm (0.05 in) | 20 years | 12 of 100 (Routine) |
| 23 May 2026 | Delta Junction 20 SE, US | daily low min | -5.0 C (23.0 F) | 1.7 C (3.1 F) | 12 years | 11 of 100 (Routine) |
| 2 May 2026 | Delta Junction 20 SE, US | daily high min (Tie) | 1.1 C (34.0 F) | tie | 0 years | 1 of 100 (Routine) |
| 20 April 2026 | Delta Junction 20 SE, US | daily snowfall | 7.6 cm (3.0 in) | 7.6 cm (3.0 in) | 29 years | 37 of 100 (Notable) |
| 20 April 2026 | Delta Junction 20 SE, US | daily rain | 5.3 mm (0.21 in) | 5.3 mm (0.21 in) | 29 years | 20 of 100 (Routine) |
| 18 April 2026 | Delta Junction 20 SE, US | daily snowfall | 2.3 cm (0.9 in) | 1.5 cm (0.6 in) | 3 years | 9 of 100 (Routine) |
| 11 April 2026 | Delta Junction 20 SE, US | daily high min (Tie) | -1.1 C (30.0 F) | tie | 24 years | 2 of 100 (Routine) |
| 7 April 2026 | Delta Junction 20 SE, US | daily snowfall | 2.5 cm (1.0 in) | 1.7 cm (0.7 in) | 17 years | 14 of 100 (Routine) |
| 7 April 2026 | Delta Junction 20 SE, US | daily rain | 1.8 mm (0.07 in) | 1.3 mm (0.05 in) | 17 years | 13 of 100 (Routine) |
| 25 March 2026 | Delta Junction 20 SE, US | daily low min (Tie) | -35.6 C (-32.1 F) | tie | 28 years | 3 of 100 (Routine) |
Climate Trend
25 complete years, 1997 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1997 | -2.3 C | +0.17 C |
| 1998 | -1.8 C | +0.67 C |
| 1999 | -4.6 C | -2.15 C |
| 2000 | -1.9 C | +0.58 C |
| 2004 | -1.9 C | +0.62 C |
| 2005 | -1.6 C | +0.91 C |
| 2006 | -3.9 C | -1.43 C |
| 2007 | -3.0 C | -0.51 C |
| 2008 | -4.4 C | -1.96 C |
| 2009 | -3.3 C | -0.78 C |
| 2010 | -2.3 C | +0.22 C |
| 2011 | -3.4 C | -0.90 C |
| 2012 | -4.9 C | -2.41 C |
| 2014 | -1.5 C | +0.99 C |
| 2015 | -1.8 C | +0.65 C |
| 2016 | 0.1 C | +2.53 C |
| 2017 | -2.1 C | +0.36 C |
| 2018 | -1.4 C | +1.10 C |
| 2019 | -0.5 C | +1.95 C |
| 2020 | -3.6 C | -1.16 C |
| 2021 | -3.5 C | -1.07 C |
| 2022 | -2.5 C | +0.02 C |
| 2023 | -2.4 C | +0.10 C |
| 2024 | -2.2 C | +0.31 C |
| 2025 | -1.4 C | +1.12 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
1980 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 32.8 C (91.0 F) | 2013 | 28.9 C (84.0 F) | 33 |
| Coldest night (TNn) | -52.8 C (-63.0 F) | 1999 | -46.7 C (-52.1 F) | 33 |
| Wettest day (Rx1day) | 43.2 mm (1.7 in) | 2008 | 23.4 mm (0.9 in) | 33 |
| Wettest five days (Rx5day) | 96.8 mm (3.8 in) | 2008 | 41.9 mm (1.6 in) | 33 |
| Longest dry spell (CDD) | 131 days | 2005 | 39 days | 33 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1980 | -0.6 C (30.9 F) |
| 1995 | 0.6 C (33.1 F) |
| 1996 | 26.7 C (80.1 F) |
| 1997 | 30.0 C (86.0 F) |
| 1998 | 30.0 C (86.0 F) |
| 1999 | 31.7 C (89.1 F) |
| 2000 | 28.3 C (82.9 F) |
| 2001 | 29.4 C (84.9 F) |
| 2002 | 28.9 C (84.0 F) |
| 2003 | 27.8 C (82.0 F) |
| 2004 | 32.2 C (90.0 F) |
| 2005 | 29.4 C (84.9 F) |
| 2006 | 27.2 C (81.0 F) |
| 2007 | 27.8 C (82.0 F) |
| 2008 | 28.9 C (84.0 F) |
| 2009 | 30.6 C (87.1 F) |
| 2010 | 30.6 C (87.1 F) |
| 2011 | 28.9 C (84.0 F) |
| 2012 | 27.8 C (82.0 F) |
| 2013 | 32.8 C (91.0 F) |
| 2014 | 27.2 C (81.0 F) |
| 2015 | 30.6 C (87.1 F) |
| 2016 | 30.0 C (86.0 F) |
| 2017 | 31.7 C (89.1 F) |
| 2018 | 31.7 C (89.1 F) |
| 2019 | 30.6 C (87.1 F) |
| 2020 | 28.3 C (82.9 F) |
| 2021 | 28.9 C (84.0 F) |
| 2022 | 28.9 C (84.0 F) |
| 2023 | 31.1 C (88.0 F) |
| 2024 | 31.1 C (88.0 F) |
| 2025 | 28.9 C (84.0 F) |
| 2026 | 28.9 C (84.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1980 | -28.9 C (-20.0 F) |
| 1995 | -46.7 C (-52.1 F) |
| 1996 | -51.1 C (-60.0 F) |
| 1997 | -51.1 C (-60.0 F) |
| 1998 | -48.3 C (-54.9 F) |
| 1999 | -52.8 C (-63.0 F) |
| 2000 | -48.3 C (-54.9 F) |
| 2001 | -35.0 C (-31.0 F) |
| 2002 | -42.2 C (-44.0 F) |
| 2003 | -42.2 C (-44.0 F) |
| 2004 | -48.3 C (-54.9 F) |
| 2005 | -50.6 C (-59.1 F) |
| 2006 | -45.6 C (-50.1 F) |
| 2007 | -46.7 C (-52.1 F) |
| 2008 | -47.8 C (-54.0 F) |
| 2009 | -48.3 C (-54.9 F) |
| 2010 | -45.0 C (-49.0 F) |
| 2011 | -46.1 C (-51.0 F) |
| 2012 | -50.0 C (-58.0 F) |
| 2013 | -48.9 C (-56.0 F) |
| 2014 | -42.8 C (-45.0 F) |
| 2015 | -47.2 C (-53.0 F) |
| 2016 | -37.2 C (-35.0 F) |
| 2017 | -48.3 C (-54.9 F) |
| 2018 | -38.3 C (-36.9 F) |
| 2019 | -45.0 C (-49.0 F) |
| 2020 | -43.9 C (-47.0 F) |
| 2021 | -43.3 C (-45.9 F) |
| 2022 | -43.3 C (-45.9 F) |
| 2023 | -37.8 C (-36.0 F) |
| 2024 | -51.1 C (-60.0 F) |
| 2025 | -48.3 C (-54.9 F) |
| 2026 | -49.4 C (-56.9 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1980 | 3.8 mm (0.15 in) |
| 1995 | 0.8 mm (0.03 in) |
| 1996 | 23.4 mm (0.9 in) |
| 1997 | 14.7 mm (0.6 in) |
| 1998 | 23.4 mm (0.9 in) |
| 1999 | 35.6 mm (1.4 in) |
| 2000 | 32.5 mm (1.3 in) |
| 2001 | 38.6 mm (1.5 in) |
| 2002 | 20.3 mm (0.8 in) |
| 2003 | 24.4 mm (1.0 in) |
| 2004 | 16.8 mm (0.7 in) |
| 2005 | 26.2 mm (1.0 in) |
| 2006 | 33.0 mm (1.3 in) |
| 2007 | 30.0 mm (1.2 in) |
| 2008 | 43.2 mm (1.7 in) |
| 2009 | 14.2 mm (0.6 in) |
| 2010 | 25.1 mm (1.0 in) |
| 2011 | 21.8 mm (0.9 in) |
| 2012 | 18.5 mm (0.7 in) |
| 2013 | 21.8 mm (0.9 in) |
| 2014 | 41.4 mm (1.6 in) |
| 2015 | 28.7 mm (1.1 in) |
| 2016 | 20.3 mm (0.8 in) |
| 2017 | 24.9 mm (1.0 in) |
| 2018 | 20.6 mm (0.8 in) |
| 2019 | 22.9 mm (0.9 in) |
| 2020 | 28.4 mm (1.1 in) |
| 2021 | 15.2 mm (0.6 in) |
| 2022 | 22.1 mm (0.9 in) |
| 2023 | 22.9 mm (0.9 in) |
| 2024 | 27.4 mm (1.1 in) |
| 2025 | 35.8 mm (1.4 in) |
| 2026 | 24.9 mm (1.0 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1980 | 3.8 mm (0.15 in) |
| 1995 | 0.8 mm (0.03 in) |
| 1996 | 49.1 mm (1.9 in) |
| 1997 | 38.3 mm (1.5 in) |
| 1998 | 35.9 mm (1.4 in) |
| 1999 | 44.0 mm (1.7 in) |
| 2000 | 67.9 mm (2.7 in) |
| 2001 | 43.6 mm (1.7 in) |
| 2002 | 26.9 mm (1.1 in) |
| 2003 | 46.0 mm (1.8 in) |
| 2004 | 31.3 mm (1.2 in) |
| 2005 | 47.0 mm (1.9 in) |
| 2006 | 81.0 mm (3.2 in) |
| 2007 | 59.1 mm (2.3 in) |
| 2008 | 96.8 mm (3.8 in) |
| 2009 | 29.5 mm (1.2 in) |
| 2010 | 43.1 mm (1.7 in) |
| 2011 | 40.4 mm (1.6 in) |
| 2012 | 38.1 mm (1.5 in) |
| 2013 | 25.1 mm (1.0 in) |
| 2014 | 72.2 mm (2.8 in) |
| 2015 | 48.3 mm (1.9 in) |
| 2016 | 30.5 mm (1.2 in) |
| 2017 | 36.2 mm (1.4 in) |
| 2018 | 41.9 mm (1.6 in) |
| 2019 | 47.3 mm (1.9 in) |
| 2020 | 84.2 mm (3.3 in) |
| 2021 | 33.7 mm (1.3 in) |
| 2022 | 26.2 mm (1.0 in) |
| 2023 | 41.9 mm (1.6 in) |
| 2024 | 42.1 mm (1.7 in) |
| 2025 | 42.7 mm (1.7 in) |
| 2026 | 34.6 mm (1.4 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1980 | 7 days |
| 1995 | 30 days |
| 1996 | 35 days |
| 1997 | 22 days |
| 1998 | 66 days |
| 1999 | 111 days |
| 2000 | 82 days |
| 2001 | 53 days |
| 2002 | 78 days |
| 2003 | 103 days |
| 2004 | 35 days |
| 2005 | 131 days |
| 2006 | 32 days |
| 2007 | 23 days |
| 2008 | 29 days |
| 2009 | 59 days |
| 2010 | 40 days |
| 2011 | 39 days |
| 2012 | 26 days |
| 2013 | 45 days |
| 2014 | 50 days |
| 2015 | 39 days |
| 2016 | 29 days |
| 2017 | 64 days |
| 2018 | 29 days |
| 2019 | 41 days |
| 2020 | 35 days |
| 2021 | 24 days |
| 2022 | 47 days |
| 2023 | 28 days |
| 2024 | 39 days |
| 2025 | 30 days |
| 2026 | 30 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 Delta Junction 20 SE falls on 4 June and the median first autumn frost on 18 August, which leaves a median of 78 days between them.
Fitted over all years, the growing season changes by +2.9 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1997 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 4 June | n/a | 4 June | n/a | +0.3 days per decade |
| First autumn frost | 18 August | n/a | 18 August | n/a | +3.2 days per decade |
| Growing days | 78 days | n/a | 78 days | n/a | +2.9 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-14).