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Data as of 2025-12-31
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Built 2026-10-15 (15 October 2026)

Mt Mitchell Threshold Days by Year

12 fixed thresholds counted per year at Mt Mitchell (USC00315921): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mt Mitchell Thresholds

  • Mt Mitchell: days with 10 mm (0.39 in) or more of precipitation in 27 years, most in 1934 with 72.
  • Mt Mitchell: days with 25 mm (0.98 in) or more of precipitation in 27 years, most in 1934 with 31.
  • Mt Mitchell: days with 50 mm (1.97 in) or more of precipitation in 27 years, most in 1957 with 10.
  • Mt Mitchell: days with a maximum temperature at or below 0 C (32 F) in 22 years, most in 1935 with 63.
  • 12 fixed thresholds have at least one qualifying day at Mt Mitchell.
20 years with a qualifying day
Nights at or below 0 C (32 F) per year at Mt Mitchell Days per year at Mt Mitchell with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 161 in 1943. 0501001502001932: 1411933: 1441934: 1411935: 1381936: 1191937: 1431939: 1361940: 1391941: 1551942: 1561943: 1611944: 1581945: 1431946: 1171947: 1581948: 1451949: 1331950: 1291951: 1591952: 1491932193419361939194119431945194719491951
Days per year at Mt Mitchell with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 161 in 1943.
Nights at or below 0 C (32 F) per year at Mt Mitchell
YearDaysDecade average
1932141137.4
1933144137.4
1934141137.4
1935138137.4
1936119137.4
1937143137.4
1939136137.4
1940139146.5
1941155146.5
1942156146.5
1943161146.5
1944158146.5
1945143146.5
1946117146.5
1947158146.5
1948145146.5
1949133146.5
1950129145.7
1951159145.7
1952149145.7
First to last qualifying date each year at Mt Mitchell For each year, a bar from the first to the last day at Mt Mitchell meeting 0 C (32 F). 1932: 1 January 1932 to 31 December 19321933: 1 January 1933 to 31 December 19331934: 1 January 1934 to 30 December 19341935: 1 January 1935 to 31 December 19351936: 1 February 1936 to 29 December 19361937: 3 January 1937 to 31 December 19371939: 2 January 1939 to 31 December 19391940: 1 January 1940 to 31 December 19401941: 3 January 1941 to 31 December 19411942: 2 January 1942 to 31 December 19421943: 1 January 1943 to 31 December 19431944: 1 January 1944 to 29 December 19441945: 3 January 1945 to 31 December 19451946: 3 January 1946 to 31 December 19461947: 1 January 1947 to 31 December 19471948: 1 January 1948 to 31 December 19481949: 1 January 1949 to 31 December 19491950: 6 January 1950 to 31 December 19501951: 1 January 1951 to 29 December 19511952: 3 January 1952 to 31 December 19521932193519391942194519481951JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mt Mitchell meeting 0 C (32 F).
First to last qualifying date each year at Mt Mitchell
YearFirst dateLast date
19321932-01-011932-12-31
19331933-01-011933-12-31
19341934-01-011934-12-30
19351935-01-011935-12-31
19361936-02-011936-12-29
19371937-01-031937-12-31
19391939-01-021939-12-31
19401940-01-011940-12-31
19411941-01-031941-12-31
19421942-01-021942-12-31
19431943-01-011943-12-31
19441944-01-011944-12-29
19451945-01-031945-12-31
19461946-01-031946-12-31
19471947-01-011947-12-31
19481948-01-011948-12-31
19491949-01-011949-12-31
19501950-01-061950-12-31
19511951-01-011951-12-29
19521952-01-031952-12-31

Every Fixed Threshold

Fixed thresholds at Mt Mitchell
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
0 C (32 F): Ice days (max2263193536
0 C (32 F): Frost days (min201611943149
-10 C (14 F): Days with min2062194236
-20 C (-4 F): Days with min17819342
10 mm (0.39 in): Days with 10 mm or more rain2772193460
25 mm (0.98 in): Days with 25 mm or more rain2731193423
50 mm (1.97 in): Days with 50 mm or more rain271019577
100 mm (3.94 in): Days with 100 mm or more rain14319401
200 mm (7.87 in): Days with 200 mm or more rain1219402
10 cm (3.9 in): Days with 10 cm or more snowfall16619312
25 cm (9.8 in): Days with 25 cm or more snowfall7319311
50 cm (19.7 in): Days with 50 cm or more snowfall2119311

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1931.

Download the Data

  • Data for Mt Mitchell threshold days by year: CSV or JSON. Field meanings are on the data page.

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 2026-10-13 (13 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).