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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Blackwood Post Office Threshold Days by Year (ASN00023706)

3 fixed thresholds counted per year at Blackwood Post Office (ASN00023706): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Blackwood Post Office Thresholds

  • Blackwood Post Office: days with 10 mm (0.39 in) or more of precipitation in 22 years, most in 1971 with 28.
  • Blackwood Post Office: days with 25 mm (0.98 in) or more of precipitation in 15 years, most in 1973 with 7.
  • Blackwood Post Office: days with 50 mm (1.97 in) or more of precipitation in 4 years, most in 1941 with 1.
  • 3 fixed thresholds have at least one qualifying day at Blackwood Post Office.
22 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Blackwood Post Office Days per year at Blackwood Post Office with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 28 in 1971. 01020301930: 141931: 161933: 191934: 181936: 131940: 161941: 181943: 151944: 91947: 201949: 141950: 171951: 221957: 81959: 41962: 151965: 81967: 61969: 131971: 281972: 171973: 2819301934194119471951196219691973
Days per year at Blackwood Post Office with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 28 in 1971.
Days with 10 mm (0.39 in) or more of precipitation per year at Blackwood Post Office
YearDaysDecade average
19301416
19311616
19331916
19341816
19361316
19401615.3
19411815.3
19431515.3
1944915.3
19472015.3
19491415.3
19501712.8
19512212.8
1957812.8
1959412.8
19621510.5
1965810.5
1967610.5
19691310.5
19712824.3
19721724.3
19732824.3
First to last qualifying date each year at Blackwood Post Office For each year, a bar from the first to the last day at Blackwood Post Office meeting 10 mm (0.39 in). 1930: 11 May 1930 to 26 December 19301931: 1 January 1931 to 17 November 19311933: 20 January 1933 to 14 December 19331934: 6 January 1934 to 29 December 19341936: 19 February 1936 to 16 December 19361940: 5 January 1940 to 19 December 19401941: 24 January 1941 to 7 December 19411943: 17 February 1943 to 17 December 19431944: 8 February 1944 to 21 December 19441947: 12 March 1947 to 23 December 19471949: 26 February 1949 to 3 November 19491950: 1 February 1950 to 20 December 19501951: 17 April 1951 to 26 October 19511957: 10 April 1957 to 23 October 19571959: 13 February 1959 to 28 November 19591962: 17 January 1962 to 29 December 19621965: 8 May 1965 to 25 November 19651967: 15 January 1967 to 29 July 19671969: 22 February 1969 to 23 December 19691971: 15 March 1971 to 10 December 19711972: 7 January 1972 to 27 December 19721973: 30 January 1973 to 31 December 197319301934194119471951196219691973JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Blackwood Post Office meeting 10 mm (0.39 in).
First to last qualifying date each year at Blackwood Post Office
YearFirst dateLast date
19301930-05-111930-12-26
19311931-01-011931-11-17
19331933-01-201933-12-14
19341934-01-061934-12-29
19361936-02-191936-12-16
19401940-01-051940-12-19
19411941-01-241941-12-07
19431943-02-171943-12-17
19441944-02-081944-12-21
19471947-03-121947-12-23
19491949-02-261949-11-03
19501950-02-011950-12-20
19511951-04-171951-10-26
19571957-04-101957-10-23
19591959-02-131959-11-28
19621962-01-171962-12-29
19651965-05-081965-11-25
19671967-01-151967-07-29
19691969-02-221969-12-23
19711971-03-151971-12-10
19721972-01-071972-12-27
19731973-01-301973-12-31

Every Fixed Threshold

Fixed thresholds at Blackwood Post Office
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2228197128
25 mm (0.98 in): Days with 25 mm or more rain15719737
50 mm (1.97 in): Days with 50 mm or more rain4119411

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1930.

Download the Data

  • Data for Blackwood Post Office 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).