Potosi 4 SW Threshold Days by Year (USC00236826)
19 fixed thresholds counted per year at Potosi 4 SW (USC00236826): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Potosi 4 SW Thresholds
- Potosi 4 SW: days with 10 mm (0.39 in) or more of precipitation in 47 years, most in 2019 with 55.
- Potosi 4 SW: days with 25 mm (0.98 in) or more of precipitation in 47 years, most in 2018 with 20.
- Potosi 4 SW: days with 50 mm (1.97 in) or more of precipitation in 44 years, most in 2009 with 6.
- Potosi 4 SW: days with a maximum temperature at or above 30 C (86 F) in 43 years, most in 1901 with 108.
- 19 fixed thresholds have at least one qualifying day at Potosi 4 SW.
Days at or above 30 C (86 F)
43 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1894 | 74 | 70.4 |
| 1895 | 80 | 70.4 |
| 1897 | 60 | 70.4 |
| 1898 | 46 | 70.4 |
| 1899 | 92 | 70.4 |
| 1900 | 86 | 97 |
| 1901 | 108 | 97 |
| 1981 | 67 | 64 |
| 1984 | 60 | 64 |
| 1985 | 51 | 64 |
| 1986 | 59 | 64 |
| 1987 | 75 | 64 |
| 1988 | 76 | 64 |
| 1989 | 60 | 64 |
| 1994 | 51 | 50.4 |
| 1995 | 54 | 50.4 |
| 1996 | 42 | 50.4 |
| 1997 | 41 | 50.4 |
| 1998 | 64 | 50.4 |
| 2000 | 60 | 49.5 |
| 2001 | 57 | 49.5 |
| 2002 | 58 | 49.5 |
| 2003 | 37 | 49.5 |
| 2005 | 67 | 49.5 |
| 2007 | 59 | 49.5 |
| 2008 | 30 | 49.5 |
| 2009 | 28 | 49.5 |
| 2010 | 69 | 53.6 |
| 2011 | 68 | 53.6 |
| 2012 | 75 | 53.6 |
| 2013 | 37 | 53.6 |
| 2014 | 34 | 53.6 |
| 2015 | 37 | 53.6 |
| 2016 | 50 | 53.6 |
| 2017 | 51 | 53.6 |
| 2018 | 69 | 53.6 |
| 2019 | 46 | 53.6 |
| 2020 | 43 | 52.2 |
| 2021 | 44 | 52.2 |
| 2022 | 53 | 52.2 |
| 2023 | 50 | 52.2 |
| 2024 | 51 | 52.2 |
| 2026 | 72 | 52.2 |
| Year | First date | Last date |
|---|---|---|
| 1894 | 1894-04-28 | 1894-09-14 |
| 1895 | 1895-04-30 | 1895-09-25 |
| 1897 | 1897-06-11 | 1897-09-26 |
| 1898 | 1898-05-23 | 1898-09-04 |
| 1899 | 1899-04-28 | 1899-10-26 |
| 1900 | 1900-05-12 | 1900-10-26 |
| 1901 | 1901-04-29 | 1901-10-10 |
| 1981 | 1981-04-01 | 1981-09-13 |
| 1984 | 1984-04-27 | 1984-09-24 |
| 1985 | 1985-03-28 | 1985-09-20 |
| 1986 | 1986-04-25 | 1986-09-28 |
| 1987 | 1987-04-20 | 1987-09-14 |
| 1988 | 1988-04-05 | 1988-09-22 |
| 1989 | 1989-04-22 | 1989-10-14 |
| 1994 | 1994-04-15 | 1994-10-02 |
| 1995 | 1995-05-14 | 1995-10-01 |
| 1996 | 1996-05-18 | 1996-09-12 |
| 1997 | 1997-03-22 | 1997-09-20 |
| 1998 | 1998-05-13 | 1998-09-29 |
| 2000 | 2000-05-22 | 2000-10-25 |
| 2001 | 2001-04-09 | 2001-09-08 |
| 2002 | 2002-04-17 | 2002-09-14 |
| 2003 | 2003-06-24 | 2003-10-20 |
| 2005 | 2005-06-05 | 2005-09-24 |
| 2007 | 2007-05-01 | 2007-10-09 |
| 2008 | 2008-05-20 | 2008-09-02 |
| 2009 | 2009-06-02 | 2009-08-28 |
| 2010 | 2010-04-02 | 2010-09-22 |
| 2011 | 2011-04-04 | 2011-09-14 |
| 2012 | 2012-04-02 | 2012-09-08 |
| 2013 | 2013-05-15 | 2013-09-20 |
| 2014 | 2014-05-05 | 2014-09-10 |
| 2015 | 2015-06-08 | 2015-09-19 |
| 2016 | 2016-05-09 | 2016-09-25 |
| 2017 | 2017-06-13 | 2017-10-15 |
| 2018 | 2018-05-11 | 2018-09-21 |
| 2019 | 2019-05-17 | 2019-10-03 |
| 2020 | 2020-04-09 | 2020-09-08 |
| 2021 | 2021-06-11 | 2021-09-29 |
| 2022 | 2022-05-11 | 2022-09-22 |
| 2023 | 2023-05-08 | 2023-09-05 |
| 2024 | 2024-04-15 | 2024-09-22 |
| 2026 | 2026-03-21 | 2026-10-14 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 43 | 108 | 1901 | 72 |
| 35 C (95 F): Days | 33 | 58 | 1901 | 12 |
| 40 C (104 F): Days | 2 | 10 | 1901 | 1 |
| 90 F (32.2 C): Days | 43 | 92 | 1901 | 40 |
| 100 F (37.8 C): Days | 12 | 28 | 1901 | 1 |
| 110 F (43.3 C): Days | 1 | 2 | 1901 | 2 |
| 0 C (32 F): Ice days (max | 43 | 37 | 1895 | 2 |
| 0 C (32 F): Frost days (min | 33 | 148 | 1897 | 16 |
| -10 C (14 F): Days with min | 33 | 51 | 1895 | 4 |
| -20 C (-4 F): Days with min | 18 | 15 | 1899 | 6 |
| -30 C (-22 F): Days with min | 2 | 3 | 1899 | 1 |
| 20 C (68 F): Tropical nights (min | 31 | 60 | 2011 | 53 |
| 25 C (77 F): Days with min | 8 | 7 | 2012 | 4 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 47 | 55 | 2019 | 28 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 47 | 20 | 2018 | 9 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 44 | 6 | 2009 | 3 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 10 | 1 | 1898 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 17 | 4 | 1989 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 1 | 1 | 1996 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1894.
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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2026-10-17).