O O Rch Threshold Days by Year
14 fixed thresholds counted per year at O O Rch (USC00356302): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for O O Rch Thresholds
- O O Rch: days with 10 mm (0.39 in) or more of precipitation in 39 years, most in 1981 with 11.
- O O Rch: nights with a minimum temperature at or below 0 C (32 F) in 32 years, most in 1959 with 195.
- O O Rch: nights with a minimum temperature at or below -10 C (14 F) in 32 years, most in 1959 with 41.
- O O Rch: nights with a minimum temperature at or below -20 C (-4 F) in 17 years, most in 1956 with 5.
- 14 fixed thresholds have at least one qualifying day at O O Rch.
Days at or above 30 C (86 F)
15 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1956 | 26 | 40.7 |
| 1958 | 47 | 40.7 |
| 1959 | 49 | 40.7 |
| 1960 | 42 | 50 |
| 1961 | 61 | 50 |
| 1962 | 29 | 50 |
| 1966 | 37 | 50 |
| 1967 | 62 | 50 |
| 1968 | 62 | 50 |
| 1969 | 57 | 50 |
| 1970 | 75 | 50.3 |
| 1971 | 51 | 50.3 |
| 1978 | 25 | 50.3 |
| 1980 | 23 | 32.5 |
| 1981 | 42 | 32.5 |
| Year | First date | Last date |
|---|---|---|
| 1956 | 1956-06-09 | 1956-08-23 |
| 1958 | 1958-05-17 | 1958-08-31 |
| 1959 | 1959-05-13 | 1959-08-25 |
| 1960 | 1960-06-12 | 1960-09-26 |
| 1961 | 1961-05-25 | 1961-08-28 |
| 1962 | 1962-06-24 | 1962-09-25 |
| 1966 | 1966-05-04 | 1966-09-22 |
| 1967 | 1967-05-21 | 1967-09-28 |
| 1968 | 1968-04-29 | 1968-09-12 |
| 1969 | 1969-06-02 | 1969-09-12 |
| 1970 | 1970-05-16 | 1970-10-04 |
| 1971 | 1971-06-21 | 1971-09-13 |
| 1978 | 1978-06-08 | 1978-09-25 |
| 1980 | 1980-07-20 | 1980-10-07 |
| 1981 | 1981-06-25 | 1981-09-18 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 15 | 75 | 1970 | 42 |
| 35 C (95 F): Days | 14 | 14 | 1968 | 3 |
| 90 F (32.2 C): Days | 15 | 46 | 1970 | 15 |
| 100 F (37.8 C): Days | 4 | 2 | 1961 | 2 |
| 0 C (32 F): Ice days (max | 15 | 29 | 1956 | 10 |
| 0 C (32 F): Frost days (min | 32 | 195 | 1959 | 199 |
| -10 C (14 F): Days with min | 32 | 41 | 1959 | 48 |
| -20 C (-4 F): Days with min | 17 | 5 | 1956 | 3 |
| -30 C (-22 F): Days with min | 3 | 3 | 1962 | 3 |
| 20 C (68 F): Tropical nights (min | 1 | 0 | n/a | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 39 | 11 | 1981 | 5 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 10 | 2 | 1951 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 10 | 4 | 1981 | 3 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 1 | 1 | 1981 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1956.
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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2025-12-31).