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Built 2026-10-19 (19 October 2026)

Alexandria Bay 1 SW Threshold Days by Year (USC00300077)

14 fixed thresholds counted per year at Alexandria Bay 1 SW (USC00300077): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Alexandria Bay 1 SW Thresholds

  • Alexandria Bay 1 SW: days with 10 mm (0.39 in) or more of precipitation in 39 years, most in 1945 with 40.
  • Alexandria Bay 1 SW: days with 25 mm (0.98 in) or more of precipitation in 37 years, most in 1947 with 11.
  • Alexandria Bay 1 SW: days with a maximum temperature at or below 0 C (32 F) in 35 years, most in 1963 with 79.
  • Alexandria Bay 1 SW: nights with a minimum temperature at or below 0 C (32 F) in 35 years, most in 1972 with 166.
  • 14 fixed thresholds have at least one qualifying day at Alexandria Bay 1 SW.
34 years with a qualifying day
Days at or above 30 C (86 F) per year at Alexandria Bay 1 SW Days per year at Alexandria Bay 1 SW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 35 in 1949. 0102030401937: 251938: 211939: 241940: 61941: 201942: 81943: 41944: 241945: 51946: 101947: 181948: 101949: 351950: 41951: 21952: 211953: 211955: 321956: 31957: 131958: 31959: 201960: 21961: 61962: 41963: 121964: 181965: 61966: 151967: 21968: 81969: 151970: 111972: 5193719411945194919531958196219661970
Days per year at Alexandria Bay 1 SW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 35 in 1949.
Days at or above 30 C (86 F) per year at Alexandria Bay 1 SW
YearDaysDecade average
19372523.3
19382123.3
19392423.3
1940614
19412014
1942814
1943414
19442414
1945514
19461014
19471814
19481014
19493514
1950413.2
1951213.2
19522113.2
19532113.2
19553213.2
1956313.2
19571313.2
1958313.2
19592013.2
196028.8
196168.8
196248.8
1963128.8
1964188.8
196568.8
1966158.8
196728.8
196888.8
1969158.8
1970118
197258
First to last qualifying date each year at Alexandria Bay 1 SW For each year, a bar from the first to the last day at Alexandria Bay 1 SW meeting 30 C (86 F). 1937: 5 July 1937 to 3 September 19371938: 21 June 1938 to 22 August 19381939: 11 June 1939 to 16 September 19391940: 28 July 1940 to 18 August 19401941: 20 June 1941 to 8 August 19411942: 14 May 1942 to 22 July 19421943: 10 July 1943 to 6 September 19431944: 27 June 1944 to 16 August 19441945: 30 June 1945 to 8 September 19451946: 25 June 1946 to 9 August 19461947: 10 June 1947 to 12 September 19471948: 30 June 1948 to 7 September 19481949: 13 June 1949 to 28 August 19491950: 9 July 1950 to 27 August 19501951: 13 September 1951 to 14 September 19511952: 25 June 1952 to 13 September 19521953: 20 June 1953 to 5 September 19531955: 6 June 1955 to 10 September 19551956: 13 June 1956 to 15 June 19561957: 17 June 1957 to 3 August 19571958: 27 July 1958 to 1 September 19581959: 29 June 1959 to 10 September 19591960: 8 September 1960 to 9 September 19601961: 15 May 1961 to 15 September 19611962: 8 July 1962 to 1 September 19621963: 29 June 1963 to 29 July 19631964: 9 June 1964 to 12 August 19641965: 9 July 1965 to 23 September 19651966: 24 June 1966 to 10 August 19661967: 3 June 1967 to 4 June 19671968: 14 July 1968 to 23 July 19681969: 12 June 1969 to 31 August 19691970: 30 April 1970 to 17 August 19701972: 16 June 1972 to 1 September 19721937194219471952195819631968JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Alexandria Bay 1 SW meeting 30 C (86 F).
First to last qualifying date each year at Alexandria Bay 1 SW
YearFirst dateLast date
19371937-07-051937-09-03
19381938-06-211938-08-22
19391939-06-111939-09-16
19401940-07-281940-08-18
19411941-06-201941-08-08
19421942-05-141942-07-22
19431943-07-101943-09-06
19441944-06-271944-08-16
19451945-06-301945-09-08
19461946-06-251946-08-09
19471947-06-101947-09-12
19481948-06-301948-09-07
19491949-06-131949-08-28
19501950-07-091950-08-27
19511951-09-131951-09-14
19521952-06-251952-09-13
19531953-06-201953-09-05
19551955-06-061955-09-10
19561956-06-131956-06-15
19571957-06-171957-08-03
19581958-07-271958-09-01
19591959-06-291959-09-10
19601960-09-081960-09-09
19611961-05-151961-09-15
19621962-07-081962-09-01
19631963-06-291963-07-29
19641964-06-091964-08-12
19651965-07-091965-09-23
19661966-06-241966-08-10
19671967-06-031967-06-04
19681968-07-141968-07-23
19691969-06-121969-08-31
19701970-04-301970-08-17
19721972-06-161972-09-01

Every Fixed Threshold

Fixed thresholds at Alexandria Bay 1 SW
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days343519495
90 F (32.2 C): Days17919532
0 C (32 F): Ice days (max3579196364
0 C (32 F): Frost days (min351661972166
-10 C (14 F): Days with min3574197274
-20 C (-4 F): Days with min3422194815
-30 C (-22 F): Days with min10219391
20 C (68 F): Tropical nights (min342319558
25 C (77 F): Days with min1219492
10 mm (0.39 in): Days with 10 mm or more rain3940194531
25 mm (0.98 in): Days with 25 mm or more rain3711194710
50 mm (1.97 in): Days with 50 mm or more rain16319451
10 cm (3.9 in): Days with 10 cm or more snowfall24919628
25 cm (9.8 in): Days with 25 cm or more snowfall6319602

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1937.

Download the Data

  • Data for Alexandria Bay 1 SW 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).