Sumner Lake Weather Records (USC00298596)
Record envelope, standing records and threshold days for Sumner Lake (USC00298596), New Mexico, United States, with 52 years of record.
Key Facts for Sumner Lake
- Sumner Lake (USC00298596) is a weather station in New Mexico, United States at 34.60 latitude and -104.38 longitude, 1,313 m (4,306 ft) above sea level.
- The station reports from 1975 to 2026, 52 years of record.
- 1,464 records set at Sumner Lake still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Sumner Lake tied a daily record high minimum temperature of 16.1 C (61.0 F) on 12 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: New Mexico, United States, 34.60 latitude, -104.38 longitude.
- Elevation: 1,313 m (4,306 ft).
- Period of record: 1975 to 2026, 52 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
29 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 25.6 C (78.1 F) | -21.1 C (-6.0 F) | 22.2 C (72.0 F) | -15.0 C (5.0 F) |
| Feb | 30.0 C (86.0 F) | -26.1 C (-15.0 F) | 28.3 C (82.9 F) | -7.8 C (18.0 F) |
| Mar | 36.7 C (98.1 F) | -14.4 C (6.1 F) | 36.7 C (98.1 F) | -4.4 C (24.1 F) |
| Apr | 35.6 C (96.1 F) | -10.0 C (14.0 F) | 31.7 C (89.1 F) | -1.1 C (30.0 F) |
| May | 40.0 C (104.0 F) | -3.9 C (25.0 F) | 36.1 C (97.0 F) | 2.8 C (37.0 F) |
| Jun | 44.4 C (111.9 F) | 5.6 C (42.1 F) | 41.1 C (106.0 F) | 13.9 C (57.0 F) |
| Jul | 43.9 C (111.0 F) | 11.7 C (53.1 F) | 41.7 C (107.1 F) | 15.0 C (59.0 F) |
| Aug | 43.3 C (109.9 F) | 6.1 C (43.0 F) | 41.1 C (106.0 F) | 16.1 C (61.0 F) |
| Sep | 41.1 C (106.0 F) | -0.6 C (30.9 F) | 38.9 C (102.0 F) | 12.8 C (55.0 F) |
| Oct | 36.1 C (97.0 F) | -12.2 C (10.0 F) | 30.6 C (87.1 F) | 10.0 C (50.0 F) |
| Nov | 31.1 C (88.0 F) | -19.4 C (-2.9 F) | n/a | n/a |
| Dec | 26.7 C (80.1 F) | -24.4 C (-11.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1975 | 21 |
| 1976 | 35 |
| 1977 | 15 |
| 1978 | 28 |
| 1979 | 43 |
| 1980 | 29 |
| 1981 | 24 |
| 1982 | 18 |
| 1983 | 32 |
| 1984 | 25 |
| 1985 | 30 |
| 1986 | 28 |
| 1987 | 28 |
| 1988 | 21 |
| 1989 | 46 |
| 1990 | 26 |
| 1991 | 33 |
| 1992 | 25 |
| 1993 | 15 |
| 1994 | 17 |
| 1995 | 34 |
| 1996 | 44 |
| 1997 | 39 |
| 1998 | 13 |
| 1999 | 22 |
| 2000 | 35 |
| 2001 | 11 |
| 2002 | 23 |
| 2003 | 23 |
| 2004 | 26 |
| 2005 | 21 |
| 2006 | 35 |
| 2007 | 10 |
| 2008 | 19 |
| 2009 | 18 |
| 2010 | 19 |
| 2011 | 36 |
| 2012 | 35 |
| 2013 | 20 |
| 2014 | 39 |
| 2015 | 19 |
| 2016 | 17 |
| 2017 | 34 |
| 2018 | 18 |
| 2019 | 35 |
| 2020 | 55 |
| 2021 | 34 |
| 2022 | 37 |
| 2023 | 39 |
| 2024 | 38 |
| 2025 | 42 |
| 2026 | 35 |
All-Time Record Progression
6 new records| Date | Kind | Detail |
|---|---|---|
| 2011-02-03 | Record low minimum temperature | Record low minimum temperature -26.1 C (-15.0 F) |
| 2013-09-12 | Record daily precipitation | Record daily precipitation 102.6 mm (4.0 in) |
| 2016-11-06 | Record daily precipitation | Record daily precipitation 104.1 mm (4.1 in) |
| 2017-10-04 | Record daily precipitation | Record daily precipitation 143.0 mm (5.6 in) |
| 2022-06-12 | Record high maximum temperature | Record high maximum temperature 44.4 C (111.9 F) |
| 2022-07-20 | Record high minimum temperature | Record high minimum temperature 24.4 C (75.9 F) |
Wettest Day of Each Month
Oct: 143.0 mm (5.6 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 20.3 mm (0.8 in) | 28 January 1985 |
| Feb | 38.6 mm (1.5 in) | 24 February 2004 |
| Mar | 33.0 mm (1.3 in) | 18 March 1999 |
| Apr | 62.0 mm (2.4 in) | 25 April 1997 |
| May | 91.4 mm (3.6 in) | 1 May 1999 |
| Jun | 63.5 mm (2.5 in) | 10 June 2024 |
| Jul | 100.6 mm (4.0 in) | 30 July 2015 |
| Aug | 54.9 mm (2.2 in) | 9 August 2018 |
| Sep | 102.6 mm (4.0 in) | 12 September 2013 |
| Oct | 143.0 mm (5.6 in) | 4 October 2017 |
| Nov | 104.1 mm (4.1 in) | 6 November 2016 |
| Dec | 24.4 mm (1.0 in) | 21 December 1997 |
Period of Record Coverage
1975 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1975 | 306 | 84% | No |
| 1976 | 361 | 99% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 364 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 363 | 99% | Yes |
| 1983 | 364 | 100% | Yes |
| 1984 | 365 | 100% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 364 | 100% | Yes |
| 1987 | 364 | 100% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 364 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 364 | 100% | Yes |
| 1994 | 363 | 99% | Yes |
| 1995 | 365 | 100% | Yes |
| 1996 | 365 | 100% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 364 | 100% | Yes |
| 1999 | 364 | 100% | Yes |
| 2000 | 366 | 100% | Yes |
| 2001 | 359 | 98% | Yes |
| 2002 | 365 | 100% | Yes |
| 2003 | 364 | 100% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 334 | 92% | Yes |
| 2006 | 364 | 100% | Yes |
| 2007 | 364 | 100% | Yes |
| 2008 | 363 | 99% | Yes |
| 2009 | 362 | 99% | Yes |
| 2010 | 275 | 75% | No |
| 2011 | 364 | 100% | Yes |
| 2012 | 333 | 91% | Yes |
| 2013 | 216 | 59% | No |
| 2014 | 364 | 100% | Yes |
| 2015 | 364 | 100% | Yes |
| 2016 | 270 | 74% | No |
| 2017 | 365 | 100% | Yes |
| 2018 | 364 | 100% | Yes |
| 2019 | 363 | 99% | Yes |
| 2020 | 365 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 364 | 100% | Yes |
| 2023 | 362 | 99% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 364 | 100% | Yes |
| 2026 | 284 | 78% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 12 October 2026 | Sumner Lake, US | daily high min (Tie, Provisional) | 16.1 C (61.0 F) | tie | 17 years | 2 of 100 (Routine) |
| 30 September 2026 | Sumner Lake, US | daily rain (Provisional) | 39.1 mm (1.5 in) | 21.8 mm (0.9 in) | 28 years | 33 of 100 (Routine) |
| 24 September 2026 | Sumner Lake, US | daily rain (Provisional) | 32.8 mm (1.3 in) | 6.9 mm (0.27 in) | 8 years | 13 of 100 (Routine) |
| 23 September 2026 | Sumner Lake, US | daily rain (Provisional) | 52.1 mm (2.1 in) | 18.6 mm (0.7 in) | 16 years | 26 of 100 (Routine) |
| 18 September 2026 | Sumner Lake, US | daily high min (Provisional) | 18.3 C (64.9 F) | 0.5 C (0.9 F) | 12 years | 9 of 100 (Routine) |
| 17 September 2026 | Sumner Lake, US | daily high min (Provisional) | 17.8 C (64.0 F) | 0.6 C (1.1 F) | 1 year | 6 of 100 (Routine) |
| 15 September 2026 | Sumner Lake, US | daily high min (Provisional) | 18.3 C (64.9 F) | 1.6 C (2.9 F) | 49 years | 23 of 100 (Routine) |
| 14 September 2026 | Sumner Lake, US | daily high min (Provisional) | 20.6 C (69.1 F) | 3.4 C (6.1 F) | 7 years | 17 of 100 (Routine) |
| 13 September 2026 | Sumner Lake, US | daily high min (Provisional) | 18.9 C (66.0 F) | 1.1 C (2.0 F) | 12 years | 11 of 100 (Routine) |
| 13 September 2026 | Sumner Lake, US | daily high max (Provisional) | 38.3 C (100.9 F) | 1.6 C (2.9 F) | 1 year | 8 of 100 (Routine) |
| 12 September 2026 | Sumner Lake, US | daily high max (Provisional) | 38.9 C (102.0 F) | 1.7 C (3.1 F) | 4 years | 9 of 100 (Routine) |
| 12 September 2026 | Sumner Lake, US | daily high min (Tie, Provisional) | 17.8 C (64.0 F) | tie | 13 years | 2 of 100 (Routine) |
| 9 September 2026 | Sumner Lake, US | daily high min (Provisional) | 21.1 C (70.0 F) | 2.8 C (5.0 F) | 3 years | 13 of 100 (Routine) |
| 8 September 2026 | Sumner Lake, US | monthly high min (Provisional) | 21.7 C (71.1 F) | 1.1 C (2.0 F) | 15 years | 22 of 100 (Routine) |
| 6 September 2026 | Sumner Lake, US | daily high max (Provisional) | 38.9 C (102.0 F) | 0.6 C (1.1 F) | 31 years | 15 of 100 (Routine) |
| 6 September 2026 | Sumner Lake, US | daily high min (Provisional) | 19.4 C (66.9 F) | 1.6 C (2.9 F) | 13 years | 13 of 100 (Routine) |
| 31 August 2026 | Sumner Lake, US | daily high max (Tie, Provisional) | 39.4 C (102.9 F) | tie | 15 years | 2 of 100 (Routine) |
| 30 August 2026 | Sumner Lake, US | daily high max (Provisional) | 40.0 C (104.0 F) | 0.6 C (1.1 F) | 7 years | 8 of 100 (Routine) |
| 29 August 2026 | Sumner Lake, US | daily high min (Provisional) | 22.2 C (72.0 F) | 1.1 C (2.0 F) | 15 years | 14 of 100 (Routine) |
| 26 August 2026 | Sumner Lake, US | daily high max (Provisional) | 40.6 C (105.1 F) | 0.6 C (1.1 F) | 7 years | 8 of 100 (Routine) |
Climate Trend
45 complete years, 1976 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1976 | 13.4 C | -1.37 C |
| 1977 | 14.6 C | -0.11 C |
| 1978 | 13.5 C | -1.22 C |
| 1979 | 13.1 C | -1.64 C |
| 1980 | 14.2 C | -0.57 C |
| 1981 | 14.6 C | -0.13 C |
| 1982 | 14.0 C | -0.77 C |
| 1983 | 13.8 C | -0.91 C |
| 1984 | 13.7 C | -1.03 C |
| 1985 | 14.1 C | -0.67 C |
| 1986 | 14.5 C | -0.29 C |
| 1987 | 13.6 C | -1.13 C |
| 1988 | 13.8 C | -0.94 C |
| 1989 | 14.4 C | -0.33 C |
| 1990 | 14.1 C | -0.60 C |
| 1991 | 13.9 C | -0.82 C |
| 1992 | 14.1 C | -0.63 C |
| 1993 | 14.2 C | -0.59 C |
| 1994 | 15.0 C | +0.25 C |
| 1995 | 14.9 C | +0.14 C |
| 1996 | 15.0 C | +0.21 C |
| 1997 | 13.6 C | -1.18 C |
| 1998 | 15.0 C | +0.22 C |
| 1999 | 14.7 C | -0.04 C |
| 2000 | 15.4 C | +0.68 C |
| 2001 | 15.3 C | +0.51 C |
| 2002 | 14.9 C | +0.20 C |
| 2003 | 15.6 C | +0.88 C |
| 2004 | 14.4 C | -0.36 C |
| 2006 | 15.5 C | +0.76 C |
| 2007 | 14.9 C | +0.12 C |
| 2008 | 14.8 C | +0.04 C |
| 2009 | 15.2 C | +0.41 C |
| 2011 | 15.5 C | +0.80 C |
| 2014 | 14.5 C | -0.28 C |
| 2015 | 14.9 C | +0.13 C |
| 2017 | 16.2 C | +1.49 C |
| 2018 | 15.4 C | +0.66 C |
| 2019 | 15.3 C | +0.59 C |
| 2020 | 16.2 C | +1.49 C |
| 2021 | 15.5 C | +0.79 C |
| 2022 | 15.3 C | +0.59 C |
| 2023 | 16.2 C | +1.50 C |
| 2024 | 16.7 C | +1.94 C |
| 2025 | 15.8 C | +1.07 C |
The annual mean temperature here has risen by 0.5 C (0.4 to 0.6) per decade over 1976 to 2025. In Fahrenheit: 0.8 F (0.7 to 1.0) per decade. The slope is a straight line fitted to 45 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.5 C (0.4 to 0.6) per decade | 0.8 F (0.7 to 1.0) per decade | 1976 to 2025 | 45 | Rise |
| Mean daily maximum | 0.7 C (0.5 to 0.8) per decade | 1.2 F (0.9 to 1.5) per decade | 1976 to 2025 | 45 | Rise |
| Mean daily minimum | 0.3 C (0.2 to 0.4) per decade | 0.5 F (0.3 to 0.6) per decade | 1976 to 2025 | 45 | Rise |
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
1975 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 44.4 C (111.9 F) | 2022 | 40.6 C (105.1 F) | 52 |
| Coldest night (TNn) | -26.1 C (-15.0 F) | 2011 | -15.6 C (3.9 F) | 52 |
| Wettest day (Rx1day) | 143.0 mm (5.6 in) | 2017 | 42.2 mm (1.7 in) | 52 |
| Wettest five days (Rx5day) | 210.5 mm (8.3 in) | 2013 | 59.4 mm (2.3 in) | 52 |
| Longest dry spell (CDD) | 138 days | 2011 | 50 days | 52 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1975 | 37.8 C (100.0 F) |
| 1976 | 40.0 C (104.0 F) |
| 1977 | 40.0 C (104.0 F) |
| 1978 | 40.0 C (104.0 F) |
| 1979 | 37.8 C (100.0 F) |
| 1980 | 41.1 C (106.0 F) |
| 1981 | 41.1 C (106.0 F) |
| 1982 | 37.8 C (100.0 F) |
| 1983 | 38.9 C (102.0 F) |
| 1984 | 37.8 C (100.0 F) |
| 1985 | 38.9 C (102.0 F) |
| 1986 | 39.4 C (102.9 F) |
| 1987 | 38.3 C (100.9 F) |
| 1988 | 37.8 C (100.0 F) |
| 1989 | 40.0 C (104.0 F) |
| 1990 | 42.8 C (109.0 F) |
| 1991 | 38.3 C (100.9 F) |
| 1992 | 41.1 C (106.0 F) |
| 1993 | 40.6 C (105.1 F) |
| 1994 | 43.9 C (111.0 F) |
| 1995 | 42.2 C (108.0 F) |
| 1996 | 40.6 C (105.1 F) |
| 1997 | 38.9 C (102.0 F) |
| 1998 | 41.7 C (107.1 F) |
| 1999 | 39.4 C (102.9 F) |
| 2000 | 40.6 C (105.1 F) |
| 2001 | 39.4 C (102.9 F) |
| 2002 | 40.0 C (104.0 F) |
| 2003 | 41.1 C (106.0 F) |
| 2004 | 40.0 C (104.0 F) |
| 2005 | 40.0 C (104.0 F) |
| 2006 | 40.6 C (105.1 F) |
| 2007 | 40.6 C (105.1 F) |
| 2008 | 40.6 C (105.1 F) |
| 2009 | 40.0 C (104.0 F) |
| 2010 | 41.1 C (106.0 F) |
| 2011 | 41.1 C (106.0 F) |
| 2012 | 41.1 C (106.0 F) |
| 2013 | 37.8 C (100.0 F) |
| 2014 | 40.0 C (104.0 F) |
| 2015 | 38.9 C (102.0 F) |
| 2016 | 40.6 C (105.1 F) |
| 2017 | 42.8 C (109.0 F) |
| 2018 | 41.1 C (106.0 F) |
| 2019 | 41.1 C (106.0 F) |
| 2020 | 43.3 C (109.9 F) |
| 2021 | 42.2 C (108.0 F) |
| 2022 | 44.4 C (111.9 F) |
| 2023 | 43.9 C (111.0 F) |
| 2024 | 42.2 C (108.0 F) |
| 2025 | 40.6 C (105.1 F) |
| 2026 | 41.7 C (107.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1975 | -13.3 C (8.1 F) |
| 1976 | -19.4 C (-2.9 F) |
| 1977 | -18.3 C (-0.9 F) |
| 1978 | -24.4 C (-11.9 F) |
| 1979 | -15.6 C (3.9 F) |
| 1980 | -15.6 C (3.9 F) |
| 1981 | -17.2 C (1.0 F) |
| 1982 | -17.8 C (0.0 F) |
| 1983 | -22.2 C (-8.0 F) |
| 1984 | -20.6 C (-5.1 F) |
| 1985 | -18.3 C (-0.9 F) |
| 1986 | -18.9 C (-2.0 F) |
| 1987 | -19.4 C (-2.9 F) |
| 1988 | -13.9 C (7.0 F) |
| 1989 | -16.7 C (1.9 F) |
| 1990 | -23.9 C (-11.0 F) |
| 1991 | -14.4 C (6.1 F) |
| 1992 | -13.3 C (8.1 F) |
| 1993 | -12.8 C (9.0 F) |
| 1994 | -14.4 C (6.1 F) |
| 1995 | -11.1 C (12.0 F) |
| 1996 | -15.6 C (3.9 F) |
| 1997 | -20.6 C (-5.1 F) |
| 1998 | -15.6 C (3.9 F) |
| 1999 | -12.2 C (10.0 F) |
| 2000 | -12.2 C (10.0 F) |
| 2001 | -13.3 C (8.1 F) |
| 2002 | -16.1 C (3.0 F) |
| 2003 | -10.6 C (12.9 F) |
| 2004 | -18.3 C (-0.9 F) |
| 2005 | -18.3 C (-0.9 F) |
| 2006 | -12.2 C (10.0 F) |
| 2007 | -15.0 C (5.0 F) |
| 2008 | -12.8 C (9.0 F) |
| 2009 | -12.8 C (9.0 F) |
| 2010 | -12.8 C (9.0 F) |
| 2011 | -26.1 C (-15.0 F) |
| 2012 | -13.3 C (8.1 F) |
| 2013 | -12.8 C (9.0 F) |
| 2014 | -18.9 C (-2.0 F) |
| 2015 | -14.4 C (6.1 F) |
| 2016 | -15.0 C (5.0 F) |
| 2017 | -21.1 C (-6.0 F) |
| 2018 | -13.9 C (7.0 F) |
| 2019 | -12.2 C (10.0 F) |
| 2020 | -11.7 C (10.9 F) |
| 2021 | -17.8 C (0.0 F) |
| 2022 | -20.0 C (-4.0 F) |
| 2023 | -12.2 C (10.0 F) |
| 2024 | -15.6 C (3.9 F) |
| 2025 | -17.2 C (1.0 F) |
| 2026 | -15.0 C (5.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1975 | 54.1 mm (2.1 in) |
| 1976 | 29.5 mm (1.2 in) |
| 1977 | 51.3 mm (2.0 in) |
| 1978 | 58.2 mm (2.3 in) |
| 1979 | 55.1 mm (2.2 in) |
| 1980 | 36.8 mm (1.4 in) |
| 1981 | 29.2 mm (1.1 in) |
| 1982 | 56.9 mm (2.2 in) |
| 1983 | 21.3 mm (0.8 in) |
| 1984 | 36.1 mm (1.4 in) |
| 1985 | 55.9 mm (2.2 in) |
| 1986 | 38.6 mm (1.5 in) |
| 1987 | 53.3 mm (2.1 in) |
| 1988 | 68.6 mm (2.7 in) |
| 1989 | 38.1 mm (1.5 in) |
| 1990 | 52.1 mm (2.1 in) |
| 1991 | 50.0 mm (2.0 in) |
| 1992 | 32.0 mm (1.3 in) |
| 1993 | 37.3 mm (1.5 in) |
| 1994 | 37.1 mm (1.5 in) |
| 1995 | 24.6 mm (1.0 in) |
| 1996 | 34.3 mm (1.4 in) |
| 1997 | 62.0 mm (2.4 in) |
| 1998 | 45.7 mm (1.8 in) |
| 1999 | 99.8 mm (3.9 in) |
| 2000 | 51.6 mm (2.0 in) |
| 2001 | 29.7 mm (1.2 in) |
| 2002 | 50.0 mm (2.0 in) |
| 2003 | 29.5 mm (1.2 in) |
| 2004 | 43.2 mm (1.7 in) |
| 2005 | 44.5 mm (1.8 in) |
| 2006 | 36.8 mm (1.4 in) |
| 2007 | 24.6 mm (1.0 in) |
| 2008 | 29.2 mm (1.1 in) |
| 2009 | 26.7 mm (1.1 in) |
| 2010 | 74.2 mm (2.9 in) |
| 2011 | 20.8 mm (0.8 in) |
| 2012 | 24.9 mm (1.0 in) |
| 2013 | 102.6 mm (4.0 in) |
| 2014 | 62.2 mm (2.4 in) |
| 2015 | 100.6 mm (4.0 in) |
| 2016 | 104.1 mm (4.1 in) |
| 2017 | 143.0 mm (5.6 in) |
| 2018 | 54.9 mm (2.2 in) |
| 2019 | 24.6 mm (1.0 in) |
| 2020 | 36.8 mm (1.4 in) |
| 2021 | 40.6 mm (1.6 in) |
| 2022 | 36.6 mm (1.4 in) |
| 2023 | 26.2 mm (1.0 in) |
| 2024 | 63.5 mm (2.5 in) |
| 2025 | 41.1 mm (1.6 in) |
| 2026 | 52.1 mm (2.1 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1975 | 56.7 mm (2.2 in) |
| 1976 | 40.7 mm (1.6 in) |
| 1977 | 67.1 mm (2.6 in) |
| 1978 | 74.7 mm (2.9 in) |
| 1979 | 103.6 mm (4.1 in) |
| 1980 | 56.6 mm (2.2 in) |
| 1981 | 47.5 mm (1.9 in) |
| 1982 | 56.9 mm (2.2 in) |
| 1983 | 30.0 mm (1.2 in) |
| 1984 | 59.5 mm (2.3 in) |
| 1985 | 59.2 mm (2.3 in) |
| 1986 | 63.6 mm (2.5 in) |
| 1987 | 57.1 mm (2.2 in) |
| 1988 | 75.2 mm (3.0 in) |
| 1989 | 53.0 mm (2.1 in) |
| 1990 | 57.9 mm (2.3 in) |
| 1991 | 86.1 mm (3.4 in) |
| 1992 | 57.5 mm (2.3 in) |
| 1993 | 48.7 mm (1.9 in) |
| 1994 | 74.4 mm (2.9 in) |
| 1995 | 39.3 mm (1.5 in) |
| 1996 | 56.4 mm (2.2 in) |
| 1997 | 88.6 mm (3.5 in) |
| 1998 | 71.6 mm (2.8 in) |
| 1999 | 148.3 mm (5.8 in) |
| 2000 | 60.5 mm (2.4 in) |
| 2001 | 29.7 mm (1.2 in) |
| 2002 | 82.5 mm (3.2 in) |
| 2003 | 53.7 mm (2.1 in) |
| 2004 | 83.1 mm (3.3 in) |
| 2005 | 49.6 mm (2.0 in) |
| 2006 | 54.5 mm (2.1 in) |
| 2007 | 25.9 mm (1.0 in) |
| 2008 | 75.0 mm (3.0 in) |
| 2009 | 45.7 mm (1.8 in) |
| 2010 | 85.4 mm (3.4 in) |
| 2011 | 33.0 mm (1.3 in) |
| 2012 | 43.2 mm (1.7 in) |
| 2013 | 210.5 mm (8.3 in) |
| 2014 | 63.0 mm (2.5 in) |
| 2015 | 125.2 mm (4.9 in) |
| 2016 | 109.7 mm (4.3 in) |
| 2017 | 160.8 mm (6.3 in) |
| 2018 | 65.0 mm (2.6 in) |
| 2019 | 32.4 mm (1.3 in) |
| 2020 | 37.3 mm (1.5 in) |
| 2021 | 90.9 mm (3.6 in) |
| 2022 | 46.5 mm (1.8 in) |
| 2023 | 49.3 mm (1.9 in) |
| 2024 | 80.3 mm (3.2 in) |
| 2025 | 61.9 mm (2.4 in) |
| 2026 | 98.8 mm (3.9 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1975 | 57 days |
| 1976 | 37 days |
| 1977 | 53 days |
| 1978 | 34 days |
| 1979 | 45 days |
| 1980 | 55 days |
| 1981 | 41 days |
| 1982 | 59 days |
| 1983 | 23 days |
| 1984 | 70 days |
| 1985 | 40 days |
| 1986 | 35 days |
| 1987 | 35 days |
| 1988 | 61 days |
| 1989 | 56 days |
| 1990 | 43 days |
| 1991 | 119 days |
| 1992 | 53 days |
| 1993 | 47 days |
| 1994 | 66 days |
| 1995 | 59 days |
| 1996 | 130 days |
| 1997 | 32 days |
| 1998 | 44 days |
| 1999 | 46 days |
| 2000 | 81 days |
| 2001 | 46 days |
| 2002 | 47 days |
| 2003 | 47 days |
| 2004 | 66 days |
| 2005 | 73 days |
| 2006 | 62 days |
| 2007 | 42 days |
| 2008 | 46 days |
| 2009 | 70 days |
| 2010 | 56 days |
| 2011 | 138 days |
| 2012 | 62 days |
| 2013 | 27 days |
| 2014 | 42 days |
| 2015 | 31 days |
| 2016 | 38 days |
| 2017 | 72 days |
| 2018 | 93 days |
| 2019 | 59 days |
| 2020 | 46 days |
| 2021 | 81 days |
| 2022 | 42 days |
| 2023 | 35 days |
| 2024 | 43 days |
| 2025 | 57 days |
| 2026 | 75 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
45 years with a frostAcross 45 years with a frost, the median last spring frost at Sumner Lake falls on 14 April and the median first autumn frost on 27 October, which leaves a median of 192 days between them.
Fitted over all years, the growing season changes by +0.7 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1991 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 14 April | n/a | 15 April | n/a | -0.1 days per decade |
| First autumn frost | 27 October | n/a | 27 October | n/a | +0.6 days per decade |
| Growing days | 192 days | n/a | 192 days | n/a | +0.7 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
48 years, 1976 to 2025A day with at least 40.5 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 134.0 mm (5.3 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 40.5 mm (1.6 in) | |
| 5 years | 58.4 mm (2.3 in) | |
| 10 years | 72.7 mm (2.9 in) | |
| 25 years | 94.1 mm (3.7 in) | |
| 50 years | 112.7 mm (4.4 in) | Longer than the 48 years of record |
| 100 years | 134.0 mm (5.3 in) | Longer than the 48 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, 48 years of values from 1976 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: 143.0 mm (5.6 in) in 2017; 100.6 mm (4.0 in) in 2015; 99.8 mm (3.9 in) in 1999.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Sumner Lake, at 2000. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 2000 ran 0.2 C (0.4 F) higher than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 2000 | +0.2 | +0.4 | likely | 5 |
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Climate Twins
2007 to 2025 against 1961 to 1990Over 2007 to 2025, Sumner Lake had a mean temperature of 15.5 C (59.9 F) and 348.9 mm (13.7 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are La Verkin (United States, 851 km away), Roswell Ind Air Pk (United States, 145 km away) and White Sands Natl Mon (United States, 262 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| La Verkin | United States | 851 km (529 mi) | 15.4 C (59.7 F) | 273.1 mm (10.8 in) | 0.73 |
| Roswell Ind Air Pk | United States | 145 km (90 mi) | 15.9 C (60.6 F) | 310.9 mm (12.2 in) | 0.74 |
| White Sands Natl Mon | United States | 262 km (163 mi) | 15.3 C (59.6 F) | 250.3 mm (9.9 in) | 0.75 |
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
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).