Copco #1 Dam Threshold Days by Year
15 fixed thresholds counted per year at Copco #1 Dam (USC00041990): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Copco #1 Dam Thresholds
- Copco #1 Dam: days with 10 mm (0.39 in) or more of precipitation in 62 years, most in 1995 with 30.
- Copco #1 Dam: days with 25 mm (0.98 in) or more of precipitation in 53 years, most in 1998 with 6.
- Copco #1 Dam: days with 10 cm (3.9 in) or more of snowfall in 35 years, most in 1967 with 4.
- Copco #1 Dam: days with 50 mm (1.97 in) or more of precipitation in 14 years, most in 1964 with 2.
- 15 fixed thresholds have at least one qualifying day at Copco #1 Dam.
Days at or above 30 C (86 F)
11 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 2011 | 79 | 89.8 |
| 2012 | 99 | 89.8 |
| 2013 | 85 | 89.8 |
| 2014 | 100 | 89.8 |
| 2015 | 94 | 89.8 |
| 2016 | 92 | 89.8 |
| 2017 | 92 | 89.8 |
| 2018 | 83 | 89.8 |
| 2019 | 84 | 89.8 |
| 2020 | 102 | 101.5 |
| 2021 | 101 | 101.5 |
| Year | First date | Last date |
|---|---|---|
| 2011 | 2011-06-14 | 2011-10-01 |
| 2012 | 2012-04-23 | 2012-10-03 |
| 2013 | 2013-05-04 | 2013-09-16 |
| 2014 | 2014-05-01 | 2014-10-08 |
| 2015 | 2015-05-29 | 2015-10-16 |
| 2016 | 2016-04-07 | 2016-09-29 |
| 2017 | 2017-05-04 | 2017-09-28 |
| 2018 | 2018-04-26 | 2018-10-21 |
| 2019 | 2019-05-12 | 2019-09-27 |
| 2020 | 2020-05-09 | 2020-10-07 |
| 2021 | 2021-04-30 | 2021-10-05 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 11 | 102 | 2020 | 101 |
| 35 C (95 F): Days | 11 | 57 | 2021 | 57 |
| 40 C (104 F): Days | 10 | 13 | 2021 | 13 |
| 90 F (32.2 C): Days | 11 | 80 | 2017 | 72 |
| 100 F (37.8 C): Days | 10 | 36 | 2021 | 36 |
| 110 F (43.3 C): Days | 2 | 2 | 2021 | 2 |
| 0 C (32 F): Ice days (max | 5 | 7 | 2013 | 2 |
| 0 C (32 F): Frost days (min | 11 | 171 | 2011 | 125 |
| -10 C (14 F): Days with min | 7 | 17 | 2011 | 1 |
| 20 C (68 F): Tropical nights (min | 5 | 6 | 2021 | 6 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 62 | 30 | 1995 | 10 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 53 | 6 | 1998 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 14 | 2 | 1964 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 35 | 4 | 1967 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 6 | 1 | 1961 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2011.
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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2025-12-31).