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Built 2026-10-19 (19 October 2026)

Glenavon Threshold Days by Year (ASN00010289)

4 fixed thresholds counted per year at Glenavon (ASN00010289): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Glenavon Thresholds

  • Glenavon: days with 10 mm (0.39 in) or more of precipitation in 29 years, most in 1999 with 18.
  • Glenavon: days with 25 mm (0.98 in) or more of precipitation in 23 years, most in 1983 with 4.
  • Glenavon: days with 50 mm (1.97 in) or more of precipitation in 5 years, most in 1990 with 1.
  • Glenavon: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1990 with 1.
  • 4 fixed thresholds have at least one qualifying day at Glenavon.
29 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Glenavon Days per year at Glenavon with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 18 in 1999. 051015201977: 81978: 91979: 71980: 41981: 131982: 131983: 161984: 131985: 51986: 121987: 111988: 81989: 111990: 81991: 71992: 91993: 71994: 41995: 171996: 121997: 101998: 81999: 182000: 82001: 62002: 72003: 82004: 102006: 131977198019831986198919921995199820012004
Days per year at Glenavon with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 18 in 1999.
Days with 10 mm (0.39 in) or more of precipitation per year at Glenavon
YearDaysDecade average
197788
197898
197978
1980410.6
19811310.6
19821310.6
19831610.6
19841310.6
1985510.6
19861210.6
19871110.6
1988810.6
19891110.6
1990810
1991710
1992910
1993710
1994410
19951710
19961210
19971010
1998810
19991810
200088.7
200168.7
200278.7
200388.7
2004108.7
2006138.7
First to last qualifying date each year at Glenavon For each year, a bar from the first to the last day at Glenavon meeting 10 mm (0.39 in). 1977: 29 April 1977 to 31 October 19771978: 2 January 1978 to 19 December 19781979: 11 February 1979 to 19 August 19791980: 25 February 1980 to 26 August 19801981: 19 February 1981 to 8 December 19811982: 20 January 1982 to 21 September 19821983: 18 June 1983 to 31 December 19831984: 3 March 1984 to 13 September 19841985: 31 January 1985 to 18 September 19851986: 21 February 1986 to 9 November 19861987: 9 May 1987 to 24 December 19871988: 13 May 1988 to 3 December 19881989: 26 February 1989 to 13 November 19891990: 28 January 1990 to 2 August 19901991: 4 May 1991 to 25 December 19911992: 9 April 1992 to 15 November 19921993: 20 March 1993 to 10 November 19931994: 22 May 1994 to 11 September 19941995: 24 February 1995 to 23 December 19951996: 31 May 1996 to 6 November 19961997: 20 February 1997 to 12 November 19971998: 10 March 1998 to 29 August 19981999: 19 March 1999 to 30 December 19992000: 7 January 2000 to 6 September 20002001: 21 January 2001 to 4 August 20012002: 15 January 2002 to 16 August 20022003: 17 February 2003 to 19 August 20032004: 18 February 2004 to 28 August 20042006: 13 January 2006 to 8 September 200619771981198519891993199720012006JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Glenavon meeting 10 mm (0.39 in).
First to last qualifying date each year at Glenavon
YearFirst dateLast date
19771977-04-291977-10-31
19781978-01-021978-12-19
19791979-02-111979-08-19
19801980-02-251980-08-26
19811981-02-191981-12-08
19821982-01-201982-09-21
19831983-06-181983-12-31
19841984-03-031984-09-13
19851985-01-311985-09-18
19861986-02-211986-11-09
19871987-05-091987-12-24
19881988-05-131988-12-03
19891989-02-261989-11-13
19901990-01-281990-08-02
19911991-05-041991-12-25
19921992-04-091992-11-15
19931993-03-201993-11-10
19941994-05-221994-09-11
19951995-02-241995-12-23
19961996-05-311996-11-06
19971997-02-201997-11-12
19981998-03-101998-08-29
19991999-03-191999-12-30
20002000-01-072000-09-06
20012001-01-212001-08-04
20022002-01-152002-08-16
20032003-02-172003-08-19
20042004-02-182004-08-28
20062006-01-132006-09-08

Every Fixed Threshold

Fixed thresholds at Glenavon
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2918199913
25 mm (0.98 in): Days with 25 mm or more rain23419831
50 mm (1.97 in): Days with 50 mm or more rain5119901
100 mm (3.94 in): Days with 100 mm or more rain1119901

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1977.

Download the Data

  • Data for Glenavon 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).