Karthaus River Threshold Days by Year (USC00364450)
13 fixed thresholds counted per year at Karthaus River (USC00364450): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Karthaus River Thresholds
- Karthaus River: days with 10 mm (0.39 in) or more of precipitation in 27 years, most in 1948 with 48.
- Karthaus River: days with 25 mm (0.98 in) or more of precipitation in 26 years, most in 1948 with 13.
- Karthaus River: days with 50 mm (1.97 in) or more of precipitation in 16 years, most in 1950 with 3.
- Karthaus River: days with 10 cm (3.9 in) or more of snowfall in 10 years, most in 1971 with 7.
- 13 fixed thresholds have at least one qualifying day at Karthaus River.
Days at or above 30 C (86 F)
4 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1964 | 32 | 30 |
| 1965 | 28 | 30 |
| 1970 | 36 | 32 |
| 1971 | 28 | 32 |
| Year | First date | Last date |
|---|---|---|
| 1964 | 1964-05-20 | 1964-09-19 |
| 1965 | 1965-05-04 | 1965-09-23 |
| 1970 | 1970-05-02 | 1970-09-26 |
| 1971 | 1971-05-19 | 1971-09-11 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 4 | 36 | 1970 | 28 |
| 35 C (95 F): Days | 1 | 1 | 1971 | 1 |
| 90 F (32.2 C): Days | 4 | 15 | 1964 | 11 |
| 0 C (32 F): Ice days (max | 4 | 36 | 1970 | 27 |
| 0 C (32 F): Frost days (min | 4 | 204 | 1964 | 157 |
| -10 C (14 F): Days with min | 4 | 67 | 1965 | 44 |
| -20 C (-4 F): Days with min | 4 | 16 | 1965 | 5 |
| 20 C (68 F): Tropical nights (min | 2 | 1 | 1965 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 27 | 48 | 1948 | 32 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 26 | 13 | 1948 | 3 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 16 | 3 | 1950 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 10 | 7 | 1971 | 7 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 5 | 2 | 1971 | 2 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1964.
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 (2025-12-31).