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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Mt Lemmon Fire Dept Threshold Days by Year (USC00025732)

12 fixed thresholds counted per year at Mt Lemmon Fire Dept (USC00025732): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mt Lemmon Fire Dept Thresholds

  • Mt Lemmon Fire Dept: nights with a minimum temperature at or below 0 C (32 F) in 7 years, most in 1960 with 178.
  • Mt Lemmon Fire Dept: nights with a minimum temperature at or below -10 C (14 F) in 7 years, most in 1960 with 29.
  • Mt Lemmon Fire Dept: days with a maximum temperature at or below 0 C (32 F) in 5 years, most in 2022 with 8.
  • Mt Lemmon Fire Dept: days with 10 cm (3.9 in) or more of snowfall in 5 years, most in 1961 with 10.
  • 12 fixed thresholds have at least one qualifying day at Mt Lemmon Fire Dept.
7 years with a qualifying day
Nights at or below 0 C (32 F) per year at Mt Lemmon Fire Dept Days per year at Mt Lemmon Fire Dept with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 178 in 1960. 0501001502001959: 1531960: 1781961: 1481962: 1361982: 1451984: 1422022: 851959196019611962198219842022
Days per year at Mt Lemmon Fire Dept with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 178 in 1960.
Nights at or below 0 C (32 F) per year at Mt Lemmon Fire Dept
YearDaysDecade average
1959153153
1960178154
1961148154
1962136154
1982145143.5
1984142143.5
20228585
First to last qualifying date each year at Mt Lemmon Fire Dept For each year, a bar from the first to the last day at Mt Lemmon Fire Dept meeting 0 C (32 F). 1959: 1 January 1959 to 31 December 19591960: 1 January 1960 to 31 December 19601961: 1 February 1961 to 30 December 19611962: 1 January 1962 to 31 December 19621982: 1 January 1982 to 28 November 19821984: 1 January 1984 to 28 December 19842022: 1 January 2022 to 31 December 20221959196019611962198219842022JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mt Lemmon Fire Dept meeting 0 C (32 F).
First to last qualifying date each year at Mt Lemmon Fire Dept
YearFirst dateLast date
19591959-01-011959-12-31
19601960-01-011960-12-31
19611961-02-011961-12-30
19621962-01-011962-12-31
19821982-01-011982-11-28
19841984-01-011984-12-28
20222022-01-012022-12-31

Every Fixed Threshold

Fixed thresholds at Mt Lemmon Fire Dept
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days220196014
90 F (32.2 C): Days1319603
0 C (32 F): Ice days (max5820228
0 C (32 F): Frost days (min7178196085
-10 C (14 F): Days with min72919607
-20 C (-4 F): Days with min1119601
20 C (68 F): Tropical nights (min1119841
10 mm (0.39 in): Days with 10 mm or more rain430198430
25 mm (0.98 in): Days with 25 mm or more rain41119599
50 mm (1.97 in): Days with 50 mm or more rain4419591
10 cm (3.9 in): Days with 10 cm or more snowfall51019612
25 cm (9.8 in): Days with 25 cm or more snowfall2419614

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1960.

Download the Data

  • Data for Mt Lemmon Fire Dept 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

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