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Built 2026-10-17 (17 October 2026)

Grandfalls 3SSE Threshold Days by Year

19 fixed thresholds counted per year at Grandfalls 3SSE (USC00413680): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Grandfalls 3SSE Thresholds

  • Grandfalls 3SSE: days with 10 mm (0.39 in) or more of precipitation in 72 years, most in 1928 with 22.
  • Grandfalls 3SSE: days with 25 mm (0.98 in) or more of precipitation in 65 years, most in 1928 with 11.
  • Grandfalls 3SSE: days with a maximum temperature at or above 30 C (86 F) in 39 years, most in 2011 with 213.
  • Grandfalls 3SSE: days with a maximum temperature at or above 35 C (95 F) in 39 years, most in 2011 with 143.
  • 19 fixed thresholds have at least one qualifying day at Grandfalls 3SSE.
39 years with a qualifying day
Days at or above 30 C (86 F) per year at Grandfalls 3SSE Days per year at Grandfalls 3SSE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 213 in 2011. 01002003001941: 1261942: 1461943: 1691944: 1511946: 1701947: 1821964: 1581965: 1571966: 1551967: 1631968: 1461969: 1601970: 1391971: 1381972: 1671977: 1661978: 1621979: 1571980: 1361981: 1441982: 1661984: 1651985: 1601986: 1651987: 1431988: 1811989: 1841990: 1511991: 1751992: 1581993: 1721994: 1601995: 1641997: 1621998: 1782002: 1772009: 1802011: 2132012: 1841941194619661970197819821987199119952009
Days per year at Grandfalls 3SSE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 213 in 2011.
Days at or above 30 C (86 F) per year at Grandfalls 3SSE
YearDaysDecade average
1941126157.3
1942146157.3
1943169157.3
1944151157.3
1946170157.3
1947182157.3
1964158156.5
1965157156.5
1966155156.5
1967163156.5
1968146156.5
1969160156.5
1970139154.8
1971138154.8
1972167154.8
1977166154.8
1978162154.8
1979157154.8
1980136160.4
1981144160.4
1982166160.4
1984165160.4
1985160160.4
1986165160.4
1987143160.4
1988181160.4
1989184160.4
1990151165
1991175165
1992158165
1993172165
1994160165
1995164165
1997162165
1998178165
2002177178.5
2009180178.5
2011213198.5
2012184198.5
First to last qualifying date each year at Grandfalls 3SSE For each year, a bar from the first to the last day at Grandfalls 3SSE meeting 30 C (86 F). 1941: 6 April 1941 to 28 November 19411942: 16 March 1942 to 20 November 19421943: 24 January 1943 to 5 November 19431944: 14 March 1944 to 2 November 19441946: 26 February 1946 to 24 November 19461947: 27 March 1947 to 3 November 19471964: 9 March 1964 to 30 October 19641965: 3 April 1965 to 26 November 19651966: 11 March 1966 to 22 October 19661967: 15 February 1967 to 29 October 19671968: 3 April 1968 to 1 November 19681969: 2 April 1969 to 20 October 19691970: 25 January 1970 to 13 November 19701971: 14 March 1971 to 14 November 19711972: 24 January 1972 to 19 October 19721977: 23 February 1977 to 31 October 19771978: 19 March 1978 to 13 October 19781979: 15 February 1979 to 30 October 19791980: 29 February 1980 to 9 November 19801981: 28 March 1981 to 19 November 19811982: 24 February 1982 to 1 November 19821984: 15 February 1984 to 15 November 19841985: 4 March 1985 to 10 November 19851986: 16 February 1986 to 9 October 19861987: 2 April 1987 to 5 November 19871988: 2 March 1988 to 14 November 19881989: 26 February 1989 to 14 November 19891990: 13 March 1990 to 26 November 19901991: 5 March 1991 to 25 October 19911992: 8 April 1992 to 1 November 19921993: 9 March 1993 to 19 October 19931994: 9 February 1994 to 5 November 19941995: 20 March 1995 to 27 October 19951997: 5 March 1997 to 9 November 19971998: 24 March 1998 to 17 October 19982002: 13 March 2002 to 12 October 20022009: 6 February 2009 to 6 November 20092011: 16 February 2011 to 7 November 20112012: 28 February 2012 to 9 November 201219411947196819771982198819932002JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Grandfalls 3SSE meeting 30 C (86 F).
First to last qualifying date each year at Grandfalls 3SSE
YearFirst dateLast date
19411941-04-061941-11-28
19421942-03-161942-11-20
19431943-01-241943-11-05
19441944-03-141944-11-02
19461946-02-261946-11-24
19471947-03-271947-11-03
19641964-03-091964-10-30
19651965-04-031965-11-26
19661966-03-111966-10-22
19671967-02-151967-10-29
19681968-04-031968-11-01
19691969-04-021969-10-20
19701970-01-251970-11-13
19711971-03-141971-11-14
19721972-01-241972-10-19
19771977-02-231977-10-31
19781978-03-191978-10-13
19791979-02-151979-10-30
19801980-02-291980-11-09
19811981-03-281981-11-19
19821982-02-241982-11-01
19841984-02-151984-11-15
19851985-03-041985-11-10
19861986-02-161986-10-09
19871987-04-021987-11-05
19881988-03-021988-11-14
19891989-02-261989-11-14
19901990-03-131990-11-26
19911991-03-051991-10-25
19921992-04-081992-11-01
19931993-03-091993-10-19
19941994-02-091994-11-05
19951995-03-201995-10-27
19971997-03-051997-11-09
19981998-03-241998-10-17
20022002-03-132002-10-12
20092009-02-062009-11-06
20112011-02-162011-11-07
20122012-02-282012-11-09

Every Fixed Threshold

Fixed thresholds at Grandfalls 3SSE
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days392132011184
35 C (95 F): Days391432011120
40 C (104 F): Days3743201123
45 C (113 F): Days4319943
90 F (32.2 C): Days391782011164
100 F (37.8 C): Days3993201158
110 F (43.3 C): Days151019988
0 C (32 F): Ice days (max29519475
0 C (32 F): Frost days (min36109197980
-10 C (14 F): Days with min2818198910
-20 C (-4 F): Days with min1119461
20 C (68 F): Tropical nights (min3689199866
25 C (77 F): Days with min131019981
10 mm (0.39 in): Days with 10 mm or more rain722219288
25 mm (0.98 in): Days with 25 mm or more rain651119282
50 mm (1.97 in): Days with 50 mm or more rain30319411
100 mm (3.94 in): Days with 100 mm or more rain2119641
10 cm (3.9 in): Days with 10 cm or more snowfall17319181
25 cm (9.8 in): Days with 25 cm or more snowfall1119181

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1941.

Download the Data

  • Data for Grandfalls 3SSE 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).