Niagara Falls Ont Hydro Threshold Days by Year (CA006135660)
13 fixed thresholds counted per year at Niagara Falls Ont Hydro (CA006135660): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Niagara Falls Ont Hydro Thresholds
- Niagara Falls Ont Hydro: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 1965 with 39.
- Niagara Falls Ont Hydro: days with 25 mm (0.98 in) or more of precipitation in 46 years, most in 1940 with 8.
- Niagara Falls Ont Hydro: days with 10 cm (3.9 in) or more of snowfall in 46 years, most in 1940 with 7.
- Niagara Falls Ont Hydro: nights with a minimum temperature at or below 0 C (32 F) in 27 years, most in 1947 with 159.
- 13 fixed thresholds have at least one qualifying day at Niagara Falls Ont Hydro.
Days at or above 30 C (86 F)
21 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1943 | 19 | 19.9 |
| 1944 | 28 | 19.9 |
| 1945 | 16 | 19.9 |
| 1946 | 11 | 19.9 |
| 1947 | 18 | 19.9 |
| 1948 | 14 | 19.9 |
| 1949 | 33 | 19.9 |
| 1950 | 13 | 20 |
| 1951 | 9 | 20 |
| 1952 | 33 | 20 |
| 1953 | 20 | 20 |
| 1954 | 13 | 20 |
| 1959 | 32 | 20 |
| 1960 | 9 | 10.6 |
| 1961 | 4 | 10.6 |
| 1962 | 12 | 10.6 |
| 1963 | 14 | 10.6 |
| 1964 | 13 | 10.6 |
| 1965 | 4 | 10.6 |
| 1966 | 15 | 10.6 |
| 1969 | 14 | 10.6 |
| Year | First date | Last date |
|---|---|---|
| 1943 | 1943-06-04 | 1943-09-06 |
| 1944 | 1944-05-26 | 1944-08-16 |
| 1945 | 1945-06-14 | 1945-09-10 |
| 1946 | 1946-06-26 | 1946-08-09 |
| 1947 | 1947-06-10 | 1947-09-11 |
| 1948 | 1948-06-29 | 1948-09-18 |
| 1949 | 1949-06-12 | 1949-08-27 |
| 1950 | 1950-06-08 | 1950-08-27 |
| 1951 | 1951-06-17 | 1951-09-13 |
| 1952 | 1952-06-15 | 1952-09-14 |
| 1953 | 1953-05-10 | 1953-09-04 |
| 1954 | 1954-06-14 | 1954-09-29 |
| 1959 | 1959-06-09 | 1959-09-28 |
| 1960 | 1960-06-28 | 1960-09-24 |
| 1961 | 1961-06-13 | 1961-09-13 |
| 1962 | 1962-05-15 | 1962-08-31 |
| 1963 | 1963-06-25 | 1963-07-28 |
| 1964 | 1964-06-23 | 1964-09-09 |
| 1965 | 1965-07-09 | 1965-09-22 |
| 1966 | 1966-06-13 | 1966-09-02 |
| 1969 | 1969-06-12 | 1969-08-31 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 21 | 33 | 1949 | 14 |
| 35 C (95 F): Days | 2 | 3 | 1948 | 1 |
| 90 F (32.2 C): Days | 17 | 16 | 1944 | 1 |
| 0 C (32 F): Ice days (max | 21 | 78 | 1960 | 67 |
| 0 C (32 F): Frost days (min | 27 | 159 | 1947 | 140 |
| -10 C (14 F): Days with min | 27 | 47 | 1960 | 32 |
| -20 C (-4 F): Days with min | 18 | 8 | 1945 | 4 |
| 20 C (68 F): Tropical nights (min | 26 | 27 | 1959 | 13 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 46 | 39 | 1965 | 23 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 46 | 8 | 1940 | 4 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 15 | 2 | 1933 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 46 | 7 | 1940 | 3 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 13 | 2 | 1960 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1943.
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).