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Built 2026-10-19 (19 October 2026)

Alliance Threshold Days by Year (CA003010160)

15 fixed thresholds counted per year at Alliance (CA003010160): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Alliance Thresholds

  • Alliance: days with a maximum temperature at or above 30 C (86 F) in 35 years, most in 1981 with 18.
  • Alliance: days with a maximum temperature at or below 0 C (32 F) in 35 years, most in 1955 with 128.
  • Alliance: nights with a minimum temperature at or below 0 C (32 F) in 35 years, most in 1918 with 241.
  • Alliance: nights with a minimum temperature at or below -10 C (14 F) in 35 years, most in 1919 with 130.
  • 15 fixed thresholds have at least one qualifying day at Alliance.
35 years with a qualifying day
Days at or above 30 C (86 F) per year at Alliance Days per year at Alliance with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 18 in 1981. 051015201917: 141918: 121919: 161920: 151921: 111922: 101923: 31924: 91925: 51954: 31955: 11956: 41957: 61958: 151959: 91960: 121963: 21964: 81965: 121966: 61967: 151968: 31969: 111970: 141971: 151972: 81973: 41974: 61975: 81976: 41977: 101978: 101979: 81980: 31981: 18191719211925195719631967197119751979
Days per year at Alliance with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 18 in 1981.
Days at or above 30 C (86 F) per year at Alliance
YearDaysDecade average
19171414
19181214
19191614
1920158.8
1921118.8
1922108.8
192338.8
192498.8
192558.8
195436.3
195516.3
195646.3
195766.3
1958156.3
195996.3
1960128.6
196328.6
196488.6
1965128.6
196668.6
1967158.6
196838.6
1969118.6
1970148.7
1971158.7
197288.7
197348.7
197468.7
197588.7
197648.7
1977108.7
1978108.7
197988.7
1980310.5
19811810.5
First to last qualifying date each year at Alliance For each year, a bar from the first to the last day at Alliance meeting 30 C (86 F). 1917: 16 June 1917 to 22 September 19171918: 13 June 1918 to 8 August 19181919: 19 May 1919 to 18 August 19191920: 15 July 1920 to 23 August 19201921: 21 June 1921 to 30 August 19211922: 3 June 1922 to 25 September 19221923: 10 June 1923 to 12 June 19231924: 14 May 1924 to 25 July 19241925: 10 July 1925 to 20 August 19251954: 5 July 1954 to 19 July 19541955: 7 August 1955 to 7 August 19551956: 1 June 1956 to 20 July 19561957: 13 July 1957 to 26 July 19571958: 28 May 1958 to 24 August 19581959: 11 July 1959 to 1 August 19591960: 7 July 1960 to 3 September 19601963: 22 July 1963 to 6 August 19631964: 7 July 1964 to 18 August 19641965: 11 June 1965 to 22 August 19651966: 26 May 1966 to 26 August 19661967: 16 July 1967 to 5 September 19671968: 26 June 1968 to 9 July 19681969: 4 June 1969 to 24 August 19691970: 2 June 1970 to 23 August 19701971: 16 July 1971 to 21 August 19711972: 30 May 1972 to 28 August 19721973: 22 June 1973 to 31 July 19731974: 23 June 1974 to 5 August 19741975: 3 July 1975 to 28 August 19751976: 17 July 1976 to 22 August 19761977: 25 April 1977 to 21 July 19771978: 4 June 1978 to 10 August 19781979: 29 June 1979 to 17 August 19791980: 9 July 1980 to 6 September 19801981: 3 July 1981 to 18 September 19811917192219551960196719721977JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Alliance meeting 30 C (86 F).
First to last qualifying date each year at Alliance
YearFirst dateLast date
19171917-06-161917-09-22
19181918-06-131918-08-08
19191919-05-191919-08-18
19201920-07-151920-08-23
19211921-06-211921-08-30
19221922-06-031922-09-25
19231923-06-101923-06-12
19241924-05-141924-07-25
19251925-07-101925-08-20
19541954-07-051954-07-19
19551955-08-071955-08-07
19561956-06-011956-07-20
19571957-07-131957-07-26
19581958-05-281958-08-24
19591959-07-111959-08-01
19601960-07-071960-09-03
19631963-07-221963-08-06
19641964-07-071964-08-18
19651965-06-111965-08-22
19661966-05-261966-08-26
19671967-07-161967-09-05
19681968-06-261968-07-09
19691969-06-041969-08-24
19701970-06-021970-08-23
19711971-07-161971-08-21
19721972-05-301972-08-28
19731973-06-221973-07-31
19741974-06-231974-08-05
19751975-07-031975-08-28
19761976-07-171976-08-22
19771977-04-251977-07-21
19781978-06-041978-08-10
19791979-06-291979-08-17
19801980-07-091980-09-06
19811981-07-031981-09-18

Every Fixed Threshold

Fixed thresholds at Alliance
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3518198118
35 C (95 F): Days9719191
90 F (32.2 C): Days271119197
0 C (32 F): Ice days (max35128195574
0 C (32 F): Frost days (min352411918192
-10 C (14 F): Days with min35130191964
-20 C (-4 F): Days with min3572191713
-30 C (-22 F): Days with min353319173
-40 C (-40 F): Days with min12719181
20 C (68 F): Tropical nights (min5119231
10 mm (0.39 in): Days with 10 mm or more rain351619808
25 mm (0.98 in): Days with 25 mm or more rain31619732
50 mm (1.97 in): Days with 50 mm or more rain7219631
10 cm (3.9 in): Days with 10 cm or more snowfall30619241
25 cm (9.8 in): Days with 25 cm or more snowfall5119181

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1917.

Download the Data

  • Data for Alliance 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 (2026-10-17).