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Built 2026-10-19 (19 October 2026)

Dallesport 9 N Threshold Days by Year (USC00451972)

4 fixed thresholds counted per year at Dallesport 9 N (USC00451972): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Dallesport 9 N Thresholds

  • Dallesport 9 N: days with 10 mm (0.39 in) or more of precipitation in 30 years, most in 1950 with 34.
  • Dallesport 9 N: days with 25 mm (0.98 in) or more of precipitation in 26 years, most in 1964 with 6.
  • Dallesport 9 N: days with 10 cm (3.9 in) or more of snowfall in 25 years, most in 1950 with 10.
  • Dallesport 9 N: days with 25 cm (9.8 in) or more of snowfall in 12 years, most in 1964 with 3.
  • 4 fixed thresholds have at least one qualifying day at Dallesport 9 N.
30 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Dallesport 9 N Days per year at Dallesport 9 N with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 34 in 1950. 0102030401949: 151950: 341951: 311953: 221954: 161955: 151956: 111957: 201958: 191959: 101960: 161961: 221962: 141963: 121964: 191965: 81966: 191967: 121968: 221969: 101970: 241971: 181972: 201973: 241974: 161975: 231976: 81977: 171978: 131979: 141949195319561959196219651968197119741977
Days per year at Dallesport 9 N with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 34 in 1950.
Days with 10 mm (0.39 in) or more of precipitation per year at Dallesport 9 N
YearDaysDecade average
19491515
19503419.8
19513119.8
19532219.8
19541619.8
19551519.8
19561119.8
19572019.8
19581919.8
19591019.8
19601615.4
19612215.4
19621415.4
19631215.4
19641915.4
1965815.4
19661915.4
19671215.4
19682215.4
19691015.4
19702417.7
19711817.7
19722017.7
19732417.7
19741617.7
19752317.7
1976817.7
19771717.7
19781317.7
19791417.7
First to last qualifying date each year at Dallesport 9 N For each year, a bar from the first to the last day at Dallesport 9 N meeting 10 mm (0.39 in). 1949: 1 January 1949 to 31 December 19491950: 7 January 1950 to 23 December 19501951: 2 January 1951 to 29 December 19511953: 2 January 1953 to 20 December 19531954: 4 January 1954 to 30 December 19541955: 28 February 1955 to 11 December 19551956: 4 January 1956 to 11 December 19561957: 1 February 1957 to 25 December 19571958: 12 January 1958 to 7 December 19581959: 11 January 1959 to 19 September 19591960: 8 January 1960 to 26 December 19601961: 5 January 1961 to 23 December 19611962: 9 February 1962 to 15 December 19621963: 31 January 1963 to 28 December 19631964: 17 January 1964 to 26 December 19641965: 10 January 1965 to 23 December 19651966: 1 January 1966 to 25 December 19661967: 19 January 1967 to 22 December 19671968: 14 January 1968 to 24 December 19681969: 1 January 1969 to 22 December 19691970: 9 January 1970 to 15 December 19701971: 15 January 1971 to 29 December 19711972: 10 January 1972 to 21 December 19721973: 11 January 1973 to 27 December 19731974: 12 January 1974 to 27 December 19741975: 4 January 1975 to 26 December 19751976: 4 January 1976 to 20 April 19761977: 27 February 1977 to 14 December 19771978: 3 January 1978 to 11 December 19781979: 10 January 1979 to 1 December 197919491954195819621966197019741978JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Dallesport 9 N meeting 10 mm (0.39 in).
First to last qualifying date each year at Dallesport 9 N
YearFirst dateLast date
19491949-01-011949-12-31
19501950-01-071950-12-23
19511951-01-021951-12-29
19531953-01-021953-12-20
19541954-01-041954-12-30
19551955-02-281955-12-11
19561956-01-041956-12-11
19571957-02-011957-12-25
19581958-01-121958-12-07
19591959-01-111959-09-19
19601960-01-081960-12-26
19611961-01-051961-12-23
19621962-02-091962-12-15
19631963-01-311963-12-28
19641964-01-171964-12-26
19651965-01-101965-12-23
19661966-01-011966-12-25
19671967-01-191967-12-22
19681968-01-141968-12-24
19691969-01-011969-12-22
19701970-01-091970-12-15
19711971-01-151971-12-29
19721972-01-101972-12-21
19731973-01-111973-12-27
19741974-01-121974-12-27
19751975-01-041975-12-26
19761976-01-041976-04-20
19771977-02-271977-12-14
19781978-01-031978-12-11
19791979-01-101979-12-01

Every Fixed Threshold

Fixed thresholds at Dallesport 9 N
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3034195014
25 mm (0.98 in): Days with 25 mm or more rain26619641
10 cm (3.9 in): Days with 10 cm or more snowfall251019503
25 cm (9.8 in): Days with 25 cm or more snowfall12319641

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

Download the Data

  • Data for Dallesport 9 N 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).