Mifflintown Threshold Days by Year (USC00365726)
18 fixed thresholds counted per year at Mifflintown (USC00365726): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Mifflintown Thresholds
- Mifflintown: nights with a minimum temperature at or below 0 C (32 F) in 32 years, most in 1904 with 153.
- Mifflintown: nights with a minimum temperature at or below -10 C (14 F) in 32 years, most in 1904 with 49.
- Mifflintown: nights with a minimum temperature at or above 20 C (68 F) in 32 years, most in 1921 with 21.
- Mifflintown: days with a maximum temperature at or above 30 C (86 F) in 30 years, most in 1934 with 80.
- 18 fixed thresholds have at least one qualifying day at Mifflintown.
Days at or above 30 C (86 F)
30 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1904 | 29 | 34.2 |
| 1905 | 25 | 34.2 |
| 1906 | 36 | 34.2 |
| 1907 | 30 | 34.2 |
| 1908 | 46 | 34.2 |
| 1909 | 39 | 34.2 |
| 1910 | 32 | 40.3 |
| 1911 | 53 | 40.3 |
| 1912 | 32 | 40.3 |
| 1913 | 48 | 40.3 |
| 1914 | 46 | 40.3 |
| 1915 | 31 | 40.3 |
| 1916 | 46 | 40.3 |
| 1917 | 36 | 40.3 |
| 1918 | 44 | 40.3 |
| 1919 | 35 | 40.3 |
| 1920 | 24 | 45.2 |
| 1921 | 60 | 45.2 |
| 1922 | 67 | 45.2 |
| 1923 | 54 | 45.2 |
| 1924 | 34 | 45.2 |
| 1925 | 54 | 45.2 |
| 1926 | 40 | 45.2 |
| 1927 | 23 | 45.2 |
| 1928 | 42 | 45.2 |
| 1929 | 54 | 45.2 |
| 1930 | 69 | 72.8 |
| 1932 | 66 | 72.8 |
| 1933 | 76 | 72.8 |
| 1934 | 80 | 72.8 |
| Year | First date | Last date |
|---|---|---|
| 1904 | 1904-05-25 | 1904-09-05 |
| 1905 | 1905-05-04 | 1905-08-24 |
| 1906 | 1906-05-16 | 1906-09-19 |
| 1907 | 1907-05-14 | 1907-09-02 |
| 1908 | 1908-05-24 | 1908-09-22 |
| 1909 | 1909-05-06 | 1909-08-27 |
| 1910 | 1910-06-19 | 1910-09-06 |
| 1911 | 1911-05-11 | 1911-09-02 |
| 1912 | 1912-05-20 | 1912-09-11 |
| 1913 | 1913-05-02 | 1913-09-06 |
| 1914 | 1914-05-25 | 1914-09-23 |
| 1915 | 1915-04-25 | 1915-09-17 |
| 1916 | 1916-05-28 | 1916-09-13 |
| 1917 | 1917-05-18 | 1917-09-02 |
| 1918 | 1918-05-06 | 1918-08-25 |
| 1919 | 1919-05-29 | 1919-10-04 |
| 1920 | 1920-06-01 | 1920-08-17 |
| 1921 | 1921-04-25 | 1921-09-15 |
| 1922 | 1922-04-10 | 1922-10-06 |
| 1923 | 1923-04-21 | 1923-09-04 |
| 1924 | 1924-05-06 | 1924-09-01 |
| 1925 | 1925-04-23 | 1925-09-20 |
| 1926 | 1926-05-02 | 1926-10-05 |
| 1927 | 1927-06-09 | 1927-10-02 |
| 1928 | 1928-05-04 | 1928-10-12 |
| 1929 | 1929-04-07 | 1929-09-24 |
| 1930 | 1930-05-02 | 1930-09-26 |
| 1932 | 1932-05-16 | 1932-09-22 |
| 1933 | 1933-04-29 | 1933-09-26 |
| 1934 | 1934-05-05 | 1934-09-25 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 30 | 80 | 1934 | 80 |
| 35 C (95 F): Days | 24 | 24 | 1934 | 24 |
| 40 C (104 F): Days | 3 | 2 | 1918 | 1 |
| 90 F (32.2 C): Days | 30 | 56 | 1933 | 55 |
| 100 F (37.8 C): Days | 9 | 9 | 1934 | 9 |
| 0 C (32 F): Ice days (max | 30 | 58 | 1904 | 17 |
| 0 C (32 F): Frost days (min | 32 | 153 | 1904 | 103 |
| -10 C (14 F): Days with min | 32 | 49 | 1904 | 3 |
| -20 C (-4 F): Days with min | 22 | 9 | 1914 | 3 |
| -30 C (-22 F): Days with min | 2 | 2 | 1912 | 1 |
| 20 C (68 F): Tropical nights (min | 32 | 21 | 1921 | 16 |
| 25 C (77 F): Days with min | 4 | 1 | 1917 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 29 | 45 | 1915 | 39 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 29 | 14 | 1924 | 14 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 24 | 4 | 1924 | 4 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 2 | 1 | 1908 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 18 | 5 | 1907 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 4 | 2 | 1928 | 2 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1904.
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).