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Built 2026-10-18 (18 October 2026)

Spalding (Mortonga) Threshold Days by Year

4 fixed thresholds counted per year at Spalding (Mortonga) (ASN00021111): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Spalding (Mortonga) Thresholds

  • Spalding (Mortonga): days with 10 mm (0.39 in) or more of precipitation in 29 years, most in 1974 with 23.
  • Spalding (Mortonga): days with 25 mm (0.98 in) or more of precipitation in 25 years, most in 1973 with 4.
  • Spalding (Mortonga): days with 50 mm (1.97 in) or more of precipitation in 4 years, most in 1973 with 1.
  • Spalding (Mortonga): days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1995 with 1.
  • 4 fixed thresholds have at least one qualifying day at Spalding (Mortonga).
29 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Spalding (Mortonga) Days per year at Spalding (Mortonga) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 23 in 1974. 01020301970: 131971: 151972: 121973: 171974: 231975: 131976: 81977: 101978: 171979: 221980: 161981: 151982: 51983: 141984: 111985: 91986: 151987: 121989: 161991: 111992: 231993: 121994: 61995: 111996: 111997: 131998: 91999: 92000: 131970197319761979198219851989199319961999
Days per year at Spalding (Mortonga) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 23 in 1974.
Days with 10 mm (0.39 in) or more of precipitation per year at Spalding (Mortonga)
YearDaysDecade average
19701315
19711515
19721215
19731715
19742315
19751315
1976815
19771015
19781715
19792215
19801612.6
19811512.6
1982512.6
19831412.6
19841112.6
1985912.6
19861512.6
19871212.6
19891612.6
19911111.7
19922311.7
19931211.7
1994611.7
19951111.7
19961111.7
19971311.7
1998911.7
1999911.7
20001313
First to last qualifying date each year at Spalding (Mortonga) For each year, a bar from the first to the last day at Spalding (Mortonga) meeting 10 mm (0.39 in). 1970: 1 January 1970 to 11 December 19701971: 22 February 1971 to 10 December 19711972: 11 January 1972 to 26 December 19721973: 4 February 1973 to 30 December 19731974: 28 January 1974 to 24 October 19741975: 8 January 1975 to 25 October 19751976: 1 March 1976 to 3 November 19761977: 7 April 1977 to 28 November 19771978: 10 April 1978 to 19 November 19781979: 17 January 1979 to 31 December 19791980: 1 January 1980 to 6 November 19801981: 10 January 1981 to 28 November 19811982: 8 March 1982 to 21 June 19821983: 4 April 1983 to 31 December 19831984: 15 April 1984 to 3 October 19841985: 16 March 1985 to 10 December 19851986: 18 February 1986 to 18 November 19861987: 25 January 1987 to 17 November 19871989: 10 March 1989 to 27 November 19891991: 23 January 1991 to 6 November 19911992: 1 March 1992 to 25 December 19921993: 24 January 1993 to 22 December 19931994: 6 June 1994 to 1 November 19941995: 14 January 1995 to 22 October 19951996: 1 January 1996 to 17 November 19961997: 22 January 1997 to 19 December 19971998: 8 February 1998 to 13 December 19981999: 21 March 1999 to 3 December 19992000: 21 February 2000 to 9 November 200019701974197819821986199219962000JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Spalding (Mortonga) meeting 10 mm (0.39 in).
First to last qualifying date each year at Spalding (Mortonga)
YearFirst dateLast date
19701970-01-011970-12-11
19711971-02-221971-12-10
19721972-01-111972-12-26
19731973-02-041973-12-30
19741974-01-281974-10-24
19751975-01-081975-10-25
19761976-03-011976-11-03
19771977-04-071977-11-28
19781978-04-101978-11-19
19791979-01-171979-12-31
19801980-01-011980-11-06
19811981-01-101981-11-28
19821982-03-081982-06-21
19831983-04-041983-12-31
19841984-04-151984-10-03
19851985-03-161985-12-10
19861986-02-181986-11-18
19871987-01-251987-11-17
19891989-03-101989-11-27
19911991-01-231991-11-06
19921992-03-011992-12-25
19931993-01-241993-12-22
19941994-06-061994-11-01
19951995-01-141995-10-22
19961996-01-011996-11-17
19971997-01-221997-12-19
19981998-02-081998-12-13
19991999-03-211999-12-03
20002000-02-212000-11-09

Every Fixed Threshold

Fixed thresholds at Spalding (Mortonga)
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2923197413
25 mm (0.98 in): Days with 25 mm or more rain25419731
50 mm (1.97 in): Days with 50 mm or more rain4119731
100 mm (3.94 in): Days with 100 mm or more rain1119951

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1970.

Download the Data

  • Data for Spalding (Mortonga) 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).