Built 2026-10-19 (19 October 2026)

Grand Falls Threshold Days by Year (CA008101900)

18 fixed thresholds counted per year at Grand Falls (CA008101900): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Grand Falls Thresholds

  • Grand Falls: days with 10 cm (3.9 in) or more of snowfall in 45 years, most in 1933 with 16.
  • Grand Falls: days with 10 mm (0.39 in) or more of precipitation in 44 years, most in 1945 with 49.
  • Grand Falls: days with 25 mm (0.98 in) or more of precipitation in 44 years, most in 1915 with 14.
  • Grand Falls: days with a maximum temperature at or below 0 C (32 F) in 43 years, most in 1943 with 110.
  • 18 fixed thresholds have at least one qualifying day at Grand Falls.
34 years with a qualifying day
Days at or above 30 C (86 F) per year at Grand Falls Days per year at Grand Falls with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 20 in 1944. 051015201915: 61920: 11921: 81928: 31929: 11930: 21931: 21932: 11935: 81937: 91938: 21939: 51940: 11941: 11942: 51943: 51944: 201945: 91946: 51947: 151948: 41949: 91950: 31951: 21952: 101953: 61955: 81956: 11957: 11959: 161960: 61961: 31962: 31964: 1191519291935194019441948195219571962
Days per year at Grand Falls with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 20 in 1944.
Days at or above 30 C (86 F) per year at Grand Falls
YearDaysDecade average
191566
192013.3
192183.3
192833.3
192913.3
193024.1
193124.1
193214.1
193584.1
193794.1
193824.1
193954.1
194017.4
194117.4
194257.4
194357.4
1944207.4
194597.4
194657.4
1947157.4
194847.4
194997.4
195035.9
195125.9
1952105.9
195365.9
195585.9
195615.9
195715.9
1959165.9
196063.3
196133.3
196233.3
196413.3
First to last qualifying date each year at Grand Falls For each year, a bar from the first to the last day at Grand Falls meeting 30 C (86 F). 1915: 29 June 1915 to 12 August 19151920: 10 August 1920 to 10 August 19201921: 23 June 1921 to 25 July 19211928: 14 August 1928 to 16 August 19281929: 29 May 1929 to 29 May 19291930: 15 June 1930 to 16 June 19301931: 20 May 1931 to 21 July 19311932: 16 May 1932 to 16 May 19321935: 22 July 1935 to 21 August 19351937: 31 May 1937 to 30 August 19371938: 22 June 1938 to 4 August 19381939: 5 July 1939 to 16 September 19391940: 7 July 1940 to 7 July 19401941: 24 July 1941 to 24 July 19411942: 11 June 1942 to 2 September 19421943: 24 June 1943 to 14 July 19431944: 27 June 1944 to 16 August 19441945: 1 July 1945 to 7 September 19451946: 26 June 1946 to 9 August 19461947: 22 June 1947 to 14 August 19471948: 30 June 1948 to 7 September 19481949: 13 June 1949 to 30 July 19491950: 24 May 1950 to 26 May 19501951: 20 May 1951 to 10 July 19511952: 3 July 1952 to 29 August 19521953: 10 May 1953 to 30 August 19531955: 22 May 1955 to 6 August 19551956: 14 June 1956 to 14 June 19561957: 23 June 1957 to 23 June 19571959: 27 May 1959 to 8 September 19591960: 27 May 1960 to 19 August 19601961: 23 July 1961 to 10 September 19611962: 16 June 1962 to 30 June 19621964: 18 July 1964 to 18 July 19641915193019381943194819531960JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Grand Falls meeting 30 C (86 F).
First to last qualifying date each year at Grand Falls
YearFirst dateLast date
19151915-06-291915-08-12
19201920-08-101920-08-10
19211921-06-231921-07-25
19281928-08-141928-08-16
19291929-05-291929-05-29
19301930-06-151930-06-16
19311931-05-201931-07-21
19321932-05-161932-05-16
19351935-07-221935-08-21
19371937-05-311937-08-30
19381938-06-221938-08-04
19391939-07-051939-09-16
19401940-07-071940-07-07
19411941-07-241941-07-24
19421942-06-111942-09-02
19431943-06-241943-07-14
19441944-06-271944-08-16
19451945-07-011945-09-07
19461946-06-261946-08-09
19471947-06-221947-08-14
19481948-06-301948-09-07
19491949-06-131949-07-30
19501950-05-241950-05-26
19511951-05-201951-07-10
19521952-07-031952-08-29
19531953-05-101953-08-30
19551955-05-221955-08-06
19561956-06-141956-06-14
19571957-06-231957-06-23
19591959-05-271959-09-08
19601960-05-271960-08-19
19611961-07-231961-09-10
19621962-06-161962-06-30
19641964-07-181964-07-18

Every Fixed Threshold

Fixed thresholds at Grand Falls
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days342019441
35 C (95 F): Days3119351
90 F (32.2 C): Days211119441
0 C (32 F): Ice days (max431101943101
0 C (32 F): Frost days (min422031956169
-10 C (14 F): Days with min42104192978
-20 C (-4 F): Days with min4254193443
-30 C (-22 F): Days with min411919345
-40 C (-40 F): Days with min7219251
20 C (68 F): Tropical nights (min24719211
25 C (77 F): Days with min1119521
10 mm (0.39 in): Days with 10 mm or more rain4449194531
25 mm (0.98 in): Days with 25 mm or more rain441419154
50 mm (1.97 in): Days with 50 mm or more rain20419151
100 mm (3.94 in): Days with 100 mm or more rain1119541
10 cm (3.9 in): Days with 10 cm or more snowfall4516193312
25 cm (9.8 in): Days with 25 cm or more snowfall29319201
50 cm (19.7 in): Days with 50 cm or more snowfall2119341

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1915.

Download the Data

  • Data for Grand Falls 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).