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Data as of 2025-12-31
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Built 2026-10-18 (18 October 2026)

Klamath Threshold Days by Year

12 fixed thresholds counted per year at Klamath (USC00044577): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Klamath Thresholds

  • Klamath: days with 10 mm (0.39 in) or more of precipitation in 54 years, most in 1983 with 86.
  • Klamath: days with 25 mm (0.98 in) or more of precipitation in 54 years, most in 1983 with 51.
  • Klamath: days with 50 mm (1.97 in) or more of precipitation in 54 years, most in 1970 with 18.
  • Klamath: nights with a minimum temperature at or below 0 C (32 F) in 53 years, most in 2003 with 83.
  • 12 fixed thresholds have at least one qualifying day at Klamath.
22 years with a qualifying day
Days at or above 30 C (86 F) per year at Klamath Days per year at Klamath with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 4 in 1958. 012341956: 11958: 41960: 11964: 21966: 21967: 11970: 21971: 11973: 11978: 21979: 21980: 11982: 11983: 11984: 11985: 11987: 21988: 11991: 11995: 12000: 22002: 119561964197019781982198519912002
Days per year at Klamath with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 4 in 1958.
Days at or above 30 C (86 F) per year at Klamath
YearDaysDecade average
195612.5
195842.5
196011.5
196421.5
196621.5
196711.5
197021.6
197111.6
197311.6
197821.6
197921.6
198011.1
198211.1
198311.1
198411.1
198511.1
198721.1
198811.1
199111
199511
200021.5
200211.5
First to last qualifying date each year at Klamath For each year, a bar from the first to the last day at Klamath meeting 30 C (86 F). 1956: 6 October 1956 to 6 October 19561958: 16 May 1958 to 30 September 19581960: 17 August 1960 to 17 August 19601964: 23 September 1964 to 24 September 19641966: 28 September 1966 to 29 September 19661967: 19 September 1967 to 19 September 19671970: 10 August 1970 to 26 September 19701971: 15 September 1971 to 15 September 19711973: 9 September 1973 to 9 September 19731978: 30 May 1978 to 13 October 19781979: 2 June 1979 to 12 September 19791980: 2 October 1980 to 2 October 19801982: 24 May 1982 to 24 May 19821983: 20 September 1983 to 20 September 19831984: 19 September 1984 to 19 September 19841985: 4 October 1985 to 4 October 19851987: 5 October 1987 to 6 October 19871988: 23 July 1988 to 23 July 19881991: 10 October 1991 to 10 October 19911995: 31 July 1995 to 31 July 19952000: 18 September 2000 to 19 September 20002002: 20 September 2002 to 20 September 200219561964197019781982198519912002JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Klamath meeting 30 C (86 F).
First to last qualifying date each year at Klamath
YearFirst dateLast date
19561956-10-061956-10-06
19581958-05-161958-09-30
19601960-08-171960-08-17
19641964-09-231964-09-24
19661966-09-281966-09-29
19671967-09-191967-09-19
19701970-08-101970-09-26
19711971-09-151971-09-15
19731973-09-091973-09-09
19781978-05-301978-10-13
19791979-06-021979-09-12
19801980-10-021980-10-02
19821982-05-241982-05-24
19831983-09-201983-09-20
19841984-09-191984-09-19
19851985-10-041985-10-04
19871987-10-051987-10-06
19881988-07-231988-07-23
19911991-10-101991-10-10
19951995-07-311995-07-31
20002000-09-182000-09-19
20022002-09-202002-09-20

Every Fixed Threshold

Fixed thresholds at Klamath
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days22419581
35 C (95 F): Days2119641
90 F (32.2 C): Days11219641
0 C (32 F): Ice days (max1119721
0 C (32 F): Frost days (min5383200383
10 mm (0.39 in): Days with 10 mm or more rain5486198378
25 mm (0.98 in): Days with 25 mm or more rain5451198330
50 mm (1.97 in): Days with 50 mm or more rain541819706
100 mm (3.94 in): Days with 100 mm or more rain32419531
200 mm (7.87 in): Days with 200 mm or more rain4119531
10 cm (3.9 in): Days with 10 cm or more snowfall3219892
25 cm (9.8 in): Days with 25 cm or more snowfall1119891

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1956.

Download the Data

  • Data for Klamath 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).