Built 2026-10-19 (19 October 2026)

Sliac Threshold Days by Year (LOM00011903)

9 fixed thresholds counted per year at Sliac (LOM00011903): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sliac Thresholds

  • Sliac: days with a maximum temperature at or above 30 C (86 F) in 33 years, most in 2003 with 32.
  • Sliac: days with a maximum temperature at or below 0 C (32 F) in 32 years, most in 1963 with 52.
  • Sliac: days with a maximum temperature at or above 90 F (32.2 C) in 26 years, most in 1963 with 14.
  • Sliac: days with 10 mm (0.39 in) or more of precipitation in 17 years, most in 1974 with 22.
  • 9 fixed thresholds have at least one qualifying day at Sliac.
33 years with a qualifying day
Days at or above 30 C (86 F) per year at Sliac Days per year at Sliac with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 32 in 2003. 0102030401961: 201962: 151963: 221974: 121975: 91976: 141977: 51978: 11979: 121980: 31981: 151982: 101983: 241984: 81985: 81986: 151987: 141988: 171989: 151990: 201991: 121992: 311995: 131996: 61997: 51998: 191999: 52000: 242001: 152002: 162003: 322004: 82025: 17196119751979198319871991199720012025
Days per year at Sliac with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 32 in 2003.
Days at or above 30 C (86 F) per year at Sliac
YearDaysDecade average
19612019
19621519
19632219
1974128.8
197598.8
1976148.8
197758.8
197818.8
1979128.8
1980312.9
19811512.9
19821012.9
19832412.9
1984812.9
1985812.9
19861512.9
19871412.9
19881712.9
19891512.9
19902013.9
19911213.9
19923113.9
19951313.9
1996613.9
1997513.9
19981913.9
1999513.9
20002419
20011519
20021619
20033219
2004819
20251717
First to last qualifying date each year at Sliac For each year, a bar from the first to the last day at Sliac meeting 30 C (86 F). 1961: 19 June 1961 to 19 September 19611962: 16 June 1962 to 15 August 19621963: 27 June 1963 to 7 August 19631974: 14 July 1974 to 21 August 19741975: 21 June 1975 to 17 September 19751976: 28 June 1976 to 21 July 19761977: 10 June 1977 to 14 June 19771978: 4 August 1978 to 4 August 19781979: 20 May 1979 to 16 August 19791980: 3 August 1980 to 8 August 19801981: 3 June 1981 to 9 August 19811982: 2 June 1982 to 8 September 19821983: 16 May 1983 to 27 August 19831984: 11 July 1984 to 4 September 19841985: 20 July 1985 to 17 August 19851986: 15 June 1986 to 12 August 19861987: 15 June 1987 to 14 September 19871988: 30 June 1988 to 20 August 19881989: 4 July 1989 to 22 August 19891990: 30 June 1990 to 1 September 19901991: 17 June 1991 to 8 August 19911992: 20 June 1992 to 31 August 19921995: 9 July 1995 to 23 August 19951996: 8 June 1996 to 2 August 19961997: 28 June 1997 to 15 August 19971998: 7 June 1998 to 18 August 19981999: 4 July 1999 to 10 August 19992000: 5 June 2000 to 22 August 20002001: 28 June 2001 to 27 August 20012002: 20 June 2002 to 29 July 20022003: 7 May 2003 to 29 August 20032004: 19 July 2004 to 20 August 20042025: 16 June 2025 to 16 August 20251961197619811986199119982003JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Sliac meeting 30 C (86 F).
First to last qualifying date each year at Sliac
YearFirst dateLast date
19611961-06-191961-09-19
19621962-06-161962-08-15
19631963-06-271963-08-07
19741974-07-141974-08-21
19751975-06-211975-09-17
19761976-06-281976-07-21
19771977-06-101977-06-14
19781978-08-041978-08-04
19791979-05-201979-08-16
19801980-08-031980-08-08
19811981-06-031981-08-09
19821982-06-021982-09-08
19831983-05-161983-08-27
19841984-07-111984-09-04
19851985-07-201985-08-17
19861986-06-151986-08-12
19871987-06-151987-09-14
19881988-06-301988-08-20
19891989-07-041989-08-22
19901990-06-301990-09-01
19911991-06-171991-08-08
19921992-06-201992-08-31
19951995-07-091995-08-23
19961996-06-081996-08-02
19971997-06-281997-08-15
19981998-06-071998-08-18
19991999-07-041999-08-10
20002000-06-052000-08-22
20012001-06-282001-08-27
20022002-06-202002-07-29
20032003-05-072003-08-29
20042004-07-192004-08-20
20252025-06-162025-08-16

Every Fixed Threshold

Fixed thresholds at Sliac
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3332200317
35 C (95 F): Days7919921
90 F (32.2 C): Days261419639
0 C (32 F): Ice days (max3252196332
0 C (32 F): Frost days (min10n/a54
-10 C (14 F): Days with min10n/a4
10 mm (0.39 in): Days with 10 mm or more rain1722197410
25 mm (0.98 in): Days with 25 mm or more rain14619992
50 mm (1.97 in): Days with 50 mm or more rain1120031

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1961.

Download the Data

  • Data for Sliac 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).