Portal Threshold Days by Year (USC00026706)
16 fixed thresholds counted per year at Portal (USC00026706): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Portal Thresholds
- Portal: days with 10 mm (0.39 in) or more of precipitation in 36 years, most in 1931 with 28.
- Portal: days with 25 mm (0.98 in) or more of precipitation in 32 years, most in 1919 with 9.
- Portal: days with 10 cm (3.9 in) or more of snowfall in 20 years, most in 1939 with 4.
- Portal: days with a maximum temperature at or above 30 C (86 F) in 13 years, most in 1953 with 123.
- 16 fixed thresholds have at least one qualifying day at Portal.
Days at or above 30 C (86 F)
13 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1939 | 71 | 71 |
| 1940 | 52 | 82.1 |
| 1941 | 56 | 82.1 |
| 1942 | 63 | 82.1 |
| 1946 | 94 | 82.1 |
| 1947 | 101 | 82.1 |
| 1948 | 120 | 82.1 |
| 1949 | 89 | 82.1 |
| 1950 | 91 | 108.8 |
| 1951 | 111 | 108.8 |
| 1952 | 119 | 108.8 |
| 1953 | 123 | 108.8 |
| 1954 | 100 | 108.8 |
| Year | First date | Last date |
|---|---|---|
| 1939 | 1939-05-18 | 1939-09-11 |
| 1940 | 1940-06-01 | 1940-09-16 |
| 1941 | 1941-05-08 | 1941-08-28 |
| 1942 | 1942-05-21 | 1942-09-02 |
| 1946 | 1946-04-18 | 1946-09-25 |
| 1947 | 1947-04-29 | 1947-10-10 |
| 1948 | 1948-04-16 | 1948-10-16 |
| 1949 | 1949-04-25 | 1949-10-01 |
| 1950 | 1950-04-21 | 1950-10-14 |
| 1951 | 1951-05-04 | 1951-10-11 |
| 1952 | 1952-05-03 | 1952-10-21 |
| 1953 | 1953-05-20 | 1953-10-01 |
| 1954 | 1954-04-19 | 1954-10-01 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 13 | 123 | 1953 | 100 |
| 35 C (95 F): Days | 13 | 36 | 1948 | 17 |
| 90 F (32.2 C): Days | 13 | 86 | 1951 | 61 |
| 100 F (37.8 C): Days | 7 | 14 | 1948 | 4 |
| 0 C (32 F): Ice days (max | 5 | 6 | 1949 | 1 |
| 0 C (32 F): Frost days (min | 13 | 167 | 1942 | 59 |
| -10 C (14 F): Days with min | 10 | 14 | 1939 | 4 |
| -20 C (-4 F): Days with min | 1 | 1 | 1949 | 1 |
| 20 C (68 F): Tropical nights (min | 9 | 15 | 1953 | 4 |
| 25 C (77 F): Days with min | 1 | 1 | 1951 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 36 | 28 | 1931 | 11 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 32 | 9 | 1919 | 3 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 11 | 2 | 1916 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 20 | 4 | 1939 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 3 | 1 | 1916 | 1 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 1 | 1 | 1923 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1939.
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).