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Built 2026-10-19 (19 October 2026)

Summerside A Threshold Days by Year (CA008300700)

13 fixed thresholds counted per year at Summerside A (CA008300700): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Summerside A Thresholds

  • Summerside A: days with a maximum temperature at or below 0 C (32 F) in 40 years, most in 1967 with 98.
  • Summerside A: nights with a minimum temperature at or below 0 C (32 F) in 40 years, most in 1972 with 189.
  • Summerside A: nights with a minimum temperature at or below -10 C (14 F) in 40 years, most in 1972 with 81.
  • Summerside A: days with 10 mm (0.39 in) or more of precipitation in 40 years, most in 1951 with 49.
  • 13 fixed thresholds have at least one qualifying day at Summerside A.
22 years with a qualifying day
Days at or above 30 C (86 F) per year at Summerside A Days per year at Summerside A with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 10 in 1944. 0358101943: 21944: 101945: 31946: 21947: 51949: 81952: 41953: 11955: 21959: 11960: 21963: 21968: 11970: 31973: 11975: 31976: 31977: 11978: 11979: 21980: 11982: 119431946195219591968197519781982
Days per year at Summerside A with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 10 in 1944.
Days at or above 30 C (86 F) per year at Summerside A
YearDaysDecade average
194325
1944105
194535
194625
194755
194985
195242
195312
195522
195912
196021.7
196321.7
196811.7
197032
197312
197532
197632
197712
197812
197922
198011
198211
First to last qualifying date each year at Summerside A For each year, a bar from the first to the last day at Summerside A meeting 30 C (86 F). 1943: 25 June 1943 to 13 July 19431944: 28 June 1944 to 16 August 19441945: 19 July 1945 to 7 September 19451946: 27 June 1946 to 19 July 19461947: 29 June 1947 to 14 August 19471949: 16 June 1949 to 27 August 19491952: 8 July 1952 to 28 August 19521953: 27 June 1953 to 27 June 19531955: 8 July 1955 to 9 July 19551959: 28 July 1959 to 28 July 19591960: 18 August 1960 to 19 August 19601963: 26 July 1963 to 27 July 19631968: 16 July 1968 to 16 July 19681970: 24 July 1970 to 14 August 19701973: 9 July 1973 to 9 July 19731975: 24 June 1975 to 11 August 19751976: 22 June 1976 to 22 August 19761977: 23 May 1977 to 23 May 19771978: 18 August 1978 to 18 August 19781979: 16 June 1979 to 10 July 19791980: 1 August 1980 to 1 August 19801982: 19 July 1982 to 19 July 198219431946195219591968197519781982JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Summerside A meeting 30 C (86 F).
First to last qualifying date each year at Summerside A
YearFirst dateLast date
19431943-06-251943-07-13
19441944-06-281944-08-16
19451945-07-191945-09-07
19461946-06-271946-07-19
19471947-06-291947-08-14
19491949-06-161949-08-27
19521952-07-081952-08-28
19531953-06-271953-06-27
19551955-07-081955-07-09
19591959-07-281959-07-28
19601960-08-181960-08-19
19631963-07-261963-07-27
19681968-07-161968-07-16
19701970-07-241970-08-14
19731973-07-091973-07-09
19751975-06-241975-08-11
19761976-06-221976-08-22
19771977-05-231977-05-23
19781978-08-181978-08-18
19791979-06-161979-07-10
19801980-08-011980-08-01
19821982-07-191982-07-19

Every Fixed Threshold

Fixed thresholds at Summerside A
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days221019441
90 F (32.2 C): Days7419441
0 C (32 F): Ice days (max4098196761
0 C (32 F): Frost days (min401891972146
-10 C (14 F): Days with min4081197254
-20 C (-4 F): Days with min371719751
20 C (68 F): Tropical nights (min10419472
10 mm (0.39 in): Days with 10 mm or more rain4049195134
25 mm (0.98 in): Days with 25 mm or more rain401119587
50 mm (1.97 in): Days with 50 mm or more rain14319441
10 cm (3.9 in): Days with 10 cm or more snowfall401619673
25 cm (9.8 in): Days with 25 cm or more snowfall21519781
50 cm (19.7 in): Days with 50 cm or more snowfall1219612

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1943.

Download the Data

  • Data for Summerside A 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).