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

Portland (Jamieson St) Threshold Days by Year (ASN00063071)

4 fixed thresholds counted per year at Portland (Jamieson St) (ASN00063071): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Portland (Jamieson St) Thresholds

  • Portland (Jamieson St): days with 10 mm (0.39 in) or more of precipitation in 47 years, most in 1950 with 45.
  • Portland (Jamieson St): days with 25 mm (0.98 in) or more of precipitation in 47 years, most in 1973 with 20.
  • Portland (Jamieson St): days with 50 mm (1.97 in) or more of precipitation in 26 years, most in 2022 with 4.
  • Portland (Jamieson St): days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1950 with 1.
  • 4 fixed thresholds have at least one qualifying day at Portland (Jamieson St).
47 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Portland (Jamieson St) Days per year at Portland (Jamieson St) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 45 in 1950. 02040601945: 241946: 161947: 331948: 271949: 281950: 451951: 171952: 301953: 161954: 221955: 311956: 291957: 131958: 251959: 311960: 281961: 201962: 241963: 331964: 241965: 151966: 261967: 171968: 261969: 251970: 261971: 261972: 191973: 451974: 271975: 231976: 291977: 191978: 281979: 121980: 121981: 251982: 42003: 192005: 192018: 252019: 172020: 342021: 362022: 352023: 182025: 231945195019551960196519701975198020182023
Days per year at Portland (Jamieson St) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 45 in 1950.
Days with 10 mm (0.39 in) or more of precipitation per year at Portland (Jamieson St)
YearDaysDecade average
19452425.6
19461625.6
19473325.6
19482725.6
19492825.6
19504525.9
19511725.9
19523025.9
19531625.9
19542225.9
19553125.9
19562925.9
19571325.9
19582525.9
19593125.9
19602823.8
19612023.8
19622423.8
19633323.8
19642423.8
19651523.8
19662623.8
19671723.8
19682623.8
19692523.8
19702625.4
19712625.4
19721925.4
19734525.4
19742725.4
19752325.4
19762925.4
19771925.4
19782825.4
19791225.4
19801213.7
19812513.7
1982413.7
20031919
20051919
20182521
20191721
20203429.2
20213629.2
20223529.2
20231829.2
20252329.2
First to last qualifying date each year at Portland (Jamieson St) For each year, a bar from the first to the last day at Portland (Jamieson St) meeting 10 mm (0.39 in). 1945: 10 January 1945 to 6 December 19451946: 18 January 1946 to 18 November 19461947: 16 January 1947 to 24 December 19471948: 1 January 1948 to 31 December 19481949: 9 January 1949 to 19 December 19491950: 1 January 1950 to 24 November 19501951: 6 January 1951 to 9 December 19511952: 1 March 1952 to 30 December 19521953: 5 January 1953 to 31 December 19531954: 2 January 1954 to 24 December 19541955: 22 January 1955 to 19 December 19551956: 10 January 1956 to 16 October 19561957: 6 January 1957 to 31 December 19571958: 29 January 1958 to 28 December 19581959: 1 January 1959 to 19 December 19591960: 13 January 1960 to 27 December 19601961: 3 January 1961 to 17 December 19611962: 12 January 1962 to 21 December 19621963: 4 January 1963 to 30 December 19631964: 14 January 1964 to 23 December 19641965: 13 April 1965 to 6 December 19651966: 17 January 1966 to 30 December 19661967: 26 January 1967 to 30 December 19671968: 4 January 1968 to 27 December 19681969: 14 January 1969 to 13 December 19691970: 1 January 1970 to 28 December 19701971: 14 January 1971 to 27 December 19711972: 13 January 1972 to 27 December 19721973: 26 January 1973 to 31 December 19731974: 7 January 1974 to 2 November 19741975: 27 January 1975 to 31 December 19751976: 13 January 1976 to 24 December 19761977: 15 January 1977 to 2 December 19771978: 3 January 1978 to 27 December 19781979: 3 March 1979 to 24 November 19791980: 3 January 1980 to 15 December 19801981: 6 February 1981 to 29 December 19811982: 4 March 1982 to 11 November 19822003: 1 January 2003 to 12 December 20032005: 17 January 2005 to 17 December 20052018: 9 January 2018 to 21 December 20182019: 8 January 2019 to 25 November 20192020: 20 January 2020 to 30 December 20202021: 2 January 2021 to 27 December 20212022: 2 February 2022 to 13 December 20222023: 27 January 2023 to 21 December 20232025: 9 February 2025 to 14 December 202519451951195719631969197519812020JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Portland (Jamieson St) meeting 10 mm (0.39 in).
First to last qualifying date each year at Portland (Jamieson St)
YearFirst dateLast date
19451945-01-101945-12-06
19461946-01-181946-11-18
19471947-01-161947-12-24
19481948-01-011948-12-31
19491949-01-091949-12-19
19501950-01-011950-11-24
19511951-01-061951-12-09
19521952-03-011952-12-30
19531953-01-051953-12-31
19541954-01-021954-12-24
19551955-01-221955-12-19
19561956-01-101956-10-16
19571957-01-061957-12-31
19581958-01-291958-12-28
19591959-01-011959-12-19
19601960-01-131960-12-27
19611961-01-031961-12-17
19621962-01-121962-12-21
19631963-01-041963-12-30
19641964-01-141964-12-23
19651965-04-131965-12-06
19661966-01-171966-12-30
19671967-01-261967-12-30
19681968-01-041968-12-27
19691969-01-141969-12-13
19701970-01-011970-12-28
19711971-01-141971-12-27
19721972-01-131972-12-27
19731973-01-261973-12-31
19741974-01-071974-11-02
19751975-01-271975-12-31
19761976-01-131976-12-24
19771977-01-151977-12-02
19781978-01-031978-12-27
19791979-03-031979-11-24
19801980-01-031980-12-15
19811981-02-061981-12-29
19821982-03-041982-11-11
20032003-01-012003-12-12
20052005-01-172005-12-17
20182018-01-092018-12-21
20192019-01-082019-11-25
20202020-01-202020-12-30
20212021-01-022021-12-27
20222022-02-022022-12-13
20232023-01-272023-12-21
20252025-02-092025-12-14

Every Fixed Threshold

Fixed thresholds at Portland (Jamieson St)
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4745195023
25 mm (0.98 in): Days with 25 mm or more rain472019735
50 mm (1.97 in): Days with 50 mm or more rain26420221
100 mm (3.94 in): Days with 100 mm or more rain1119501

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1945.

Download the Data

  • Data for Portland (Jamieson St) 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).