Pierce Rs Threshold Days by Year
19 fixed thresholds counted per year at Pierce Rs (USC00107049): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Pierce Rs Thresholds
- Pierce Rs: days with 10 cm (3.9 in) or more of snowfall in 34 years, most in 1916 with 22.
- Pierce Rs: days with 10 mm (0.39 in) or more of precipitation in 33 years, most in 1950 with 53.
- Pierce Rs: days with 25 mm (0.98 in) or more of precipitation in 33 years, most in 1946 with 11.
- Pierce Rs: days with a maximum temperature at or above 30 C (86 F) in 25 years, most in 1934 with 60.
- 19 fixed thresholds have at least one qualifying day at Pierce Rs.
Days at or above 30 C (86 F)
25 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1923 | 37 | 37 |
| 1933 | 45 | 47 |
| 1934 | 60 | 47 |
| 1935 | 36 | 47 |
| 1936 | 46 | 47 |
| 1938 | 45 | 47 |
| 1939 | 50 | 47 |
| 1940 | 54 | 34.1 |
| 1941 | 29 | 34.1 |
| 1942 | 48 | 34.1 |
| 1943 | 33 | 34.1 |
| 1946 | 22 | 34.1 |
| 1947 | 29 | 34.1 |
| 1948 | 19 | 34.1 |
| 1949 | 39 | 34.1 |
| 1950 | 31 | 34.7 |
| 1951 | 37 | 34.7 |
| 1952 | 30 | 34.7 |
| 1953 | 44 | 34.7 |
| 1954 | 26 | 34.7 |
| 1955 | 36 | 34.7 |
| 1959 | 39 | 34.7 |
| 1960 | 35 | 39.3 |
| 1961 | 58 | 39.3 |
| 1962 | 25 | 39.3 |
| Year | First date | Last date |
|---|---|---|
| 1923 | 1923-06-09 | 1923-09-13 |
| 1933 | 1933-06-12 | 1933-09-13 |
| 1934 | 1934-04-08 | 1934-09-06 |
| 1935 | 1935-06-11 | 1935-10-02 |
| 1936 | 1936-05-13 | 1936-09-21 |
| 1938 | 1938-07-09 | 1938-09-27 |
| 1939 | 1939-04-28 | 1939-09-21 |
| 1940 | 1940-05-23 | 1940-09-10 |
| 1941 | 1941-05-11 | 1941-08-21 |
| 1942 | 1942-05-21 | 1942-09-08 |
| 1943 | 1943-07-06 | 1943-09-25 |
| 1946 | 1946-04-25 | 1946-09-01 |
| 1947 | 1947-05-06 | 1947-09-04 |
| 1948 | 1948-05-26 | 1948-09-14 |
| 1949 | 1949-05-10 | 1949-09-23 |
| 1950 | 1950-06-29 | 1950-09-03 |
| 1951 | 1951-07-03 | 1951-09-17 |
| 1952 | 1952-06-09 | 1952-09-25 |
| 1953 | 1953-06-29 | 1953-09-21 |
| 1954 | 1954-05-18 | 1954-09-10 |
| 1955 | 1955-06-10 | 1955-09-07 |
| 1959 | 1959-05-14 | 1959-09-12 |
| 1960 | 1960-05-11 | 1960-09-11 |
| 1961 | 1961-05-26 | 1961-08-29 |
| 1962 | 1962-06-25 | 1962-08-24 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 25 | 60 | 1934 | 25 |
| 35 C (95 F): Days | 22 | 19 | 1961 | 19 |
| 40 C (104 F): Days | 4 | 3 | 1961 | 3 |
| 90 F (32.2 C): Days | 25 | 38 | 1961 | 10 |
| 100 F (37.8 C): Days | 17 | 7 | 1961 | 7 |
| 0 C (32 F): Ice days (max | 25 | 58 | 1948 | 34 |
| 0 C (32 F): Frost days (min | 25 | 235 | 1935 | 232 |
| -10 C (14 F): Days with min | 25 | 72 | 1952 | 47 |
| -20 C (-4 F): Days with min | 23 | 20 | 1949 | 10 |
| -30 C (-22 F): Days with min | 9 | 8 | 1949 | 3 |
| -40 C (-40 F): Days with min | 1 | 1 | 1933 | 1 |
| 20 C (68 F): Tropical nights (min | 1 | 0 | n/a | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 33 | 53 | 1950 | 32 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 33 | 11 | 1946 | 3 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 8 | 1 | 1921 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 1 | 1 | 1939 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 34 | 22 | 1916 | 5 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 19 | 6 | 1951 | 1 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 1 | 1 | 1951 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1923.
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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2025-12-31).