Rockland 2 NW Threshold Days by Year (USC00417700)
16 fixed thresholds counted per year at Rockland 2 NW (USC00417700): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Rockland 2 NW Thresholds
- Rockland 2 NW: days with 10 mm (0.39 in) or more of precipitation in 32 years, most in 1957 with 54.
- Rockland 2 NW: days with 25 mm (0.98 in) or more of precipitation in 32 years, most in 1949 with 19.
- Rockland 2 NW: days with 50 mm (1.97 in) or more of precipitation in 32 years, most in 1953 with 9.
- Rockland 2 NW: days with 100 mm (3.94 in) or more of precipitation in 12 years, most in 1953 with 2.
- 16 fixed thresholds have at least one qualifying day at Rockland 2 NW.
Days at or above 30 C (86 F)
8 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1964 | 146 | 136.4 |
| 1965 | 146 | 136.4 |
| 1966 | 115 | 136.4 |
| 1967 | 145 | 136.4 |
| 1968 | 130 | 136.4 |
| 1970 | 141 | 137.3 |
| 1972 | 147 | 137.3 |
| 1974 | 124 | 137.3 |
| Year | First date | Last date |
|---|---|---|
| 1964 | 1964-04-12 | 1964-10-30 |
| 1965 | 1965-04-08 | 1965-11-25 |
| 1966 | 1966-03-31 | 1966-10-14 |
| 1967 | 1967-03-11 | 1967-11-26 |
| 1968 | 1968-04-27 | 1968-10-30 |
| 1970 | 1970-04-16 | 1970-10-26 |
| 1972 | 1972-04-07 | 1972-10-18 |
| 1974 | 1974-03-20 | 1974-10-10 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 8 | 147 | 1972 | 124 |
| 35 C (95 F): Days | 8 | 65 | 1964 | 28 |
| 40 C (104 F): Days | 1 | 1 | 1964 | 1 |
| 90 F (32.2 C): Days | 8 | 110 | 1964 | 78 |
| 100 F (37.8 C): Days | 7 | 16 | 1964 | 3 |
| 0 C (32 F): Ice days (max | 1 | 2 | 1968 | 2 |
| 0 C (32 F): Frost days (min | 8 | 53 | 1968 | 33 |
| -10 C (14 F): Days with min | 4 | 1 | 1964 | 1 |
| 20 C (68 F): Tropical nights (min | 8 | 91 | 1964 | 51 |
| 25 C (77 F): Days with min | 3 | 2 | 1964 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 32 | 54 | 1957 | 31 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 32 | 19 | 1949 | 12 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 32 | 9 | 1953 | 3 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 12 | 2 | 1953 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 2 | 1 | 1949 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 1 | 1 | 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 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).