Great Falls 16St Threshold Days by Year
17 fixed thresholds counted per year at Great Falls 16St (USC00243749): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Great Falls 16St Thresholds
- Great Falls 16St: nights with a minimum temperature at or below 0 C (32 F) in 62 years, most in 1927 with 170.
- Great Falls 16St: nights with a minimum temperature at or below -10 C (14 F) in 62 years, most in 1919 with 77.
- Great Falls 16St: nights with a minimum temperature at or below -20 C (-4 F) in 62 years, most in 1916 with 49.
- Great Falls 16St: days with a maximum temperature at or above 30 C (86 F) in 60 years, most in 1919 with 79.
- 17 fixed thresholds have at least one qualifying day at Great Falls 16St.
Days at or above 30 C (86 F)
60 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1894 | 29 | 27.8 |
| 1895 | 29 | 27.8 |
| 1897 | 46 | 27.8 |
| 1898 | 23 | 27.8 |
| 1899 | 12 | 27.8 |
| 1900 | 26 | 23.5 |
| 1901 | 28 | 23.5 |
| 1902 | 15 | 23.5 |
| 1903 | 18 | 23.5 |
| 1904 | 27 | 23.5 |
| 1905 | 31 | 23.5 |
| 1906 | 32 | 23.5 |
| 1907 | 2 | 23.5 |
| 1908 | 34 | 23.5 |
| 1909 | 22 | 23.5 |
| 1910 | 31 | 34.1 |
| 1911 | 17 | 34.1 |
| 1912 | 15 | 34.1 |
| 1913 | 29 | 34.1 |
| 1914 | 42 | 34.1 |
| 1915 | 19 | 34.1 |
| 1916 | 17 | 34.1 |
| 1917 | 44 | 34.1 |
| 1918 | 48 | 34.1 |
| 1919 | 79 | 34.1 |
| 1920 | 45 | 38.4 |
| 1921 | 41 | 38.4 |
| 1922 | 40 | 38.4 |
| 1923 | 38 | 38.4 |
| 1924 | 35 | 38.4 |
| 1925 | 40 | 38.4 |
| 1926 | 40 | 38.4 |
| 1927 | 21 | 38.4 |
| 1928 | 32 | 38.4 |
| 1929 | 52 | 38.4 |
| 1930 | 52 | 53.4 |
| 1931 | 51 | 53.4 |
| 1932 | 49 | 53.4 |
| 1933 | 57 | 53.4 |
| 1934 | 51 | 53.4 |
| 1935 | 40 | 53.4 |
| 1936 | 74 | 53.4 |
| 1953 | 46 | 40.3 |
| 1954 | 28 | 40.3 |
| 1955 | 47 | 40.3 |
| 2006 | 50 | 42 |
| 2007 | 50 | 42 |
| 2008 | 38 | 42 |
| 2009 | 30 | 42 |
| 2010 | 25 | 44.7 |
| 2011 | 52 | 44.7 |
| 2012 | 48 | 44.7 |
| 2013 | 54 | 44.7 |
| 2014 | 42 | 44.7 |
| 2015 | 41 | 44.7 |
| 2016 | 42 | 44.7 |
| 2017 | 58 | 44.7 |
| 2018 | 40 | 44.7 |
| 2025 | 40 | 43 |
| 2026 | 46 | 43 |
| Year | First date | Last date |
|---|---|---|
| 1894 | 1894-05-31 | 1894-08-27 |
| 1895 | 1895-06-29 | 1895-09-16 |
| 1897 | 1897-05-03 | 1897-09-27 |
| 1898 | 1898-06-18 | 1898-08-26 |
| 1899 | 1899-06-24 | 1899-08-04 |
| 1900 | 1900-05-26 | 1900-08-15 |
| 1901 | 1901-05-16 | 1901-09-01 |
| 1902 | 1902-05-12 | 1902-08-27 |
| 1903 | 1903-05-13 | 1903-08-20 |
| 1904 | 1904-06-16 | 1904-09-08 |
| 1905 | 1905-06-01 | 1905-09-22 |
| 1906 | 1906-05-10 | 1906-09-08 |
| 1907 | 1907-07-11 | 1907-07-28 |
| 1908 | 1908-05-07 | 1908-09-06 |
| 1909 | 1909-07-01 | 1909-08-26 |
| 1910 | 1910-04-26 | 1910-08-20 |
| 1911 | 1911-05-05 | 1911-08-31 |
| 1912 | 1912-06-20 | 1912-08-25 |
| 1913 | 1913-05-30 | 1913-09-13 |
| 1914 | 1914-05-31 | 1914-09-25 |
| 1915 | 1915-06-24 | 1915-08-31 |
| 1916 | 1916-06-17 | 1916-09-02 |
| 1917 | 1917-05-14 | 1917-09-21 |
| 1918 | 1918-05-03 | 1918-09-21 |
| 1919 | 1919-05-19 | 1919-09-18 |
| 1920 | 1920-06-22 | 1920-09-17 |
| 1921 | 1921-06-07 | 1921-08-31 |
| 1922 | 1922-05-24 | 1922-09-26 |
| 1923 | 1923-06-10 | 1923-09-14 |
| 1924 | 1924-05-15 | 1924-09-14 |
| 1925 | 1925-05-20 | 1925-09-03 |
| 1926 | 1926-06-04 | 1926-08-29 |
| 1927 | 1927-06-22 | 1927-09-06 |
| 1928 | 1928-05-06 | 1928-09-17 |
| 1929 | 1929-05-23 | 1929-09-14 |
| 1930 | 1930-06-07 | 1930-09-09 |
| 1931 | 1931-05-13 | 1931-09-06 |
| 1932 | 1932-05-12 | 1932-09-11 |
| 1933 | 1933-05-30 | 1933-10-07 |
| 1934 | 1934-05-15 | 1934-10-11 |
| 1935 | 1935-06-22 | 1935-09-21 |
| 1936 | 1936-04-18 | 1936-09-22 |
| 1953 | 1953-05-06 | 1953-09-15 |
| 1954 | 1954-05-18 | 1954-09-22 |
| 1955 | 1955-06-13 | 1955-09-11 |
| 2006 | 2006-05-16 | 2006-09-06 |
| 2007 | 2007-06-20 | 2007-09-03 |
| 2008 | 2008-05-17 | 2008-09-19 |
| 2009 | 2009-05-30 | 2009-09-24 |
| 2010 | 2010-06-28 | 2010-10-03 |
| 2011 | 2011-06-28 | 2011-10-03 |
| 2012 | 2012-04-23 | 2012-09-09 |
| 2013 | 2013-05-13 | 2013-09-16 |
| 2014 | 2014-05-23 | 2014-09-25 |
| 2015 | 2015-06-08 | 2015-09-25 |
| 2016 | 2016-06-05 | 2016-09-01 |
| 2017 | 2017-05-05 | 2017-09-11 |
| 2018 | 2018-04-28 | 2018-09-07 |
| 2025 | 2025-05-11 | 2025-09-30 |
| 2026 | 2026-05-14 | 2026-08-30 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 60 | 79 | 1919 | 46 |
| 35 C (95 F): Days | 51 | 25 | 1936 | 10 |
| 40 C (104 F): Days | 3 | 2 | 1953 | 1 |
| 90 F (32.2 C): Days | 59 | 50 | 1919 | 27 |
| 100 F (37.8 C): Days | 25 | 8 | 1919 | 2 |
| 0 C (32 F): Ice days (max | 60 | 62 | 1929 | 14 |
| 0 C (32 F): Frost days (min | 62 | 170 | 1927 | 89 |
| -10 C (14 F): Days with min | 62 | 77 | 1919 | 15 |
| -20 C (-4 F): Days with min | 62 | 49 | 1916 | 8 |
| -30 C (-22 F): Days with min | 42 | 19 | 1916 | 4 |
| -40 C (-40 F): Days with min | 4 | 4 | 1916 | 1 |
| 20 C (68 F): Tropical nights (min | 30 | 6 | 2007 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 59 | 19 | 1916 | 8 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 41 | 4 | 1906 | 2 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 12 | 3 | 1953 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 55 | 8 | 2010 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 4 | 2 | 1932 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1894.
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 (2026-10-12).