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Built 2026-10-19 (19 October 2026)

Bozeman 12 NE Threshold Days by Year (USC00241050)

15 fixed thresholds counted per year at Bozeman 12 NE (USC00241050): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Bozeman 12 NE Thresholds

  • Bozeman 12 NE: days with a maximum temperature at or below 0 C (32 F) in 44 years, most in 1955 with 94.
  • Bozeman 12 NE: nights with a minimum temperature at or below 0 C (32 F) in 44 years, most in 1971 with 269.
  • Bozeman 12 NE: nights with a minimum temperature at or below -10 C (14 F) in 44 years, most in 1985 with 112.
  • Bozeman 12 NE: nights with a minimum temperature at or below -20 C (-4 F) in 44 years, most in 1979 with 37.
  • 15 fixed thresholds have at least one qualifying day at Bozeman 12 NE.
32 years with a qualifying day
Days at or above 30 C (86 F) per year at Bozeman 12 NE Days per year at Bozeman 12 NE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 11 in 1988. 0510151951: 31953: 51954: 81955: 41956: 21957: 31958: 11959: 21960: 81961: 81963: 31964: 21965: 21966: 41967: 21969: 41970: 21971: 91973: 21974: 61975: 11976: 21983: 41984: 11985: 81987: 11988: 111989: 41990: 61991: 51994: 51995: 119511956196019651970197519851990
Days per year at Bozeman 12 NE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 11 in 1988.
Days at or above 30 C (86 F) per year at Bozeman 12 NE
YearDaysDecade average
195133.5
195353.5
195483.5
195543.5
195623.5
195733.5
195813.5
195923.5
196084.1
196184.1
196334.1
196424.1
196524.1
196644.1
196724.1
196944.1
197023.7
197193.7
197323.7
197463.7
197513.7
197623.7
198344.8
198414.8
198584.8
198714.8
1988114.8
198944.8
199064.3
199154.3
199454.3
199514.3
First to last qualifying date each year at Bozeman 12 NE For each year, a bar from the first to the last day at Bozeman 12 NE meeting 30 C (86 F). 1951: 14 July 1951 to 18 July 19511953: 12 July 1953 to 20 August 19531954: 4 July 1954 to 30 August 19541955: 15 July 1955 to 31 August 19551956: 20 July 1956 to 24 July 19561957: 5 August 1957 to 10 August 19571958: 8 August 1958 to 8 August 19581959: 23 July 1959 to 31 July 19591960: 15 July 1960 to 21 August 19601961: 3 July 1961 to 19 August 19611963: 8 July 1963 to 8 August 19631964: 4 August 1964 to 18 August 19641965: 9 August 1965 to 10 August 19651966: 24 July 1966 to 25 August 19661967: 27 August 1967 to 5 September 19671969: 10 August 1969 to 24 August 19691970: 7 August 1970 to 25 August 19701971: 2 August 1971 to 27 August 19711973: 10 July 1973 to 15 August 19731974: 24 June 1974 to 22 July 19741975: 27 July 1975 to 27 July 19751976: 7 July 1976 to 22 August 19761983: 5 August 1983 to 13 August 19831984: 29 June 1984 to 29 June 19841985: 4 July 1985 to 25 August 19851987: 31 July 1987 to 31 July 19871988: 4 June 1988 to 15 August 19881989: 4 July 1989 to 31 July 19891990: 30 June 1990 to 15 August 19901991: 13 July 1991 to 31 August 19911994: 27 July 1994 to 8 September 19941995: 6 August 1995 to 6 August 199519511956196019651970197519851990JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Bozeman 12 NE meeting 30 C (86 F).
First to last qualifying date each year at Bozeman 12 NE
YearFirst dateLast date
19511951-07-141951-07-18
19531953-07-121953-08-20
19541954-07-041954-08-30
19551955-07-151955-08-31
19561956-07-201956-07-24
19571957-08-051957-08-10
19581958-08-081958-08-08
19591959-07-231959-07-31
19601960-07-151960-08-21
19611961-07-031961-08-19
19631963-07-081963-08-08
19641964-08-041964-08-18
19651965-08-091965-08-10
19661966-07-241966-08-25
19671967-08-271967-09-05
19691969-08-101969-08-24
19701970-08-071970-08-25
19711971-08-021971-08-27
19731973-07-101973-08-15
19741974-06-241974-07-22
19751975-07-271975-07-27
19761976-07-071976-08-22
19831983-08-051983-08-13
19841984-06-291984-06-29
19851985-07-041985-08-25
19871987-07-311987-07-31
19881988-06-041988-08-15
19891989-07-041989-07-31
19901990-06-301990-08-15
19911991-07-131991-08-31
19941994-07-271994-09-08
19951995-08-061995-08-06

Every Fixed Threshold

Fixed thresholds at Bozeman 12 NE
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days321119881
35 C (95 F): Days1219612
90 F (32.2 C): Days9419601
0 C (32 F): Ice days (max4494195547
0 C (32 F): Frost days (min442691971232
-10 C (14 F): Days with min44112198572
-20 C (-4 F): Days with min4437197923
-30 C (-22 F): Days with min411419721
-40 C (-40 F): Days with min10319832
10 mm (0.39 in): Days with 10 mm or more rain4441198127
25 mm (0.98 in): Days with 25 mm or more rain43919759
50 mm (1.97 in): Days with 50 mm or more rain11219531
10 cm (3.9 in): Days with 10 cm or more snowfall4436198220
25 cm (9.8 in): Days with 25 cm or more snowfall42519554
50 cm (19.7 in): Days with 50 cm or more snowfall1119631

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1951.

Download the Data

  • Data for Bozeman 12 NE 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).