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Built 2026-10-19 (19 October 2026)

Electron Headworks Threshold Days by Year (USC00452493)

14 fixed thresholds counted per year at Electron Headworks (USC00452493): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Electron Headworks Thresholds

  • Electron Headworks: nights with a minimum temperature at or below 0 C (32 F) in 36 years, most in 1955 with 164.
  • Electron Headworks: days with 10 mm (0.39 in) or more of precipitation in 36 years, most in 1948 with 76.
  • Electron Headworks: days with 25 mm (0.98 in) or more of precipitation in 36 years, most in 1972 with 25.
  • Electron Headworks: days with a maximum temperature at or above 30 C (86 F) in 34 years, most in 1952 with 15.
  • 14 fixed thresholds have at least one qualifying day at Electron Headworks.
34 years with a qualifying day
Days at or above 30 C (86 F) per year at Electron Headworks Days per year at Electron Headworks with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 15 in 1952. 0510151944: 71945: 81946: 61947: 61948: 31949: 31950: 41951: 91952: 151953: 21955: 41956: 91957: 11958: 151959: 51960: 91961: 151962: 41963: 31965: 51966: 11967: 141968: 71969: 31970: 131971: 141972: 71973: 81974: 91975: 71976: 11977: 111978: 121979: 5194419481952195719611966197019741978
Days per year at Electron Headworks with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 15 in 1952.
Days at or above 30 C (86 F) per year at Electron Headworks
YearDaysDecade average
194475.5
194585.5
194665.5
194765.5
194835.5
194935.5
195047.1
195197.1
1952157.1
195327.1
195547.1
195697.1
195717.1
1958157.1
195957.1
196096.8
1961156.8
196246.8
196336.8
196556.8
196616.8
1967146.8
196876.8
196936.8
1970138.7
1971148.7
197278.7
197388.7
197498.7
197578.7
197618.7
1977118.7
1978128.7
197958.7
First to last qualifying date each year at Electron Headworks For each year, a bar from the first to the last day at Electron Headworks meeting 30 C (86 F). 1944: 27 May 1944 to 10 September 19441945: 7 July 1945 to 1 October 19451946: 19 July 1946 to 21 August 19461947: 26 May 1947 to 22 September 19471948: 6 June 1948 to 29 June 19481949: 14 July 1949 to 28 August 19491950: 19 August 1950 to 21 September 19501951: 29 June 1951 to 16 September 19511952: 8 July 1952 to 6 October 19521953: 7 July 1953 to 14 August 19531955: 8 June 1955 to 5 September 19551956: 8 July 1956 to 22 August 19561957: 14 September 1957 to 14 September 19571958: 18 May 1958 to 7 September 19581959: 18 July 1959 to 31 July 19591960: 5 July 1960 to 9 August 19601961: 15 June 1961 to 22 August 19611962: 23 July 1962 to 28 July 19621963: 20 May 1963 to 9 September 19631965: 24 July 1965 to 1 August 19651966: 15 June 1966 to 15 June 19661967: 19 June 1967 to 27 September 19671968: 25 June 1968 to 10 August 19681969: 23 May 1969 to 17 June 19691970: 1 June 1970 to 22 August 19701971: 18 July 1971 to 12 August 19711972: 28 May 1972 to 8 August 19721973: 13 May 1973 to 5 September 19731974: 28 July 1974 to 2 September 19741975: 4 July 1975 to 26 July 19751976: 16 July 1976 to 16 July 19761977: 2 August 1977 to 18 August 19771978: 3 June 1978 to 9 August 19781979: 16 July 1979 to 14 September 19791944194919551960196619711976JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Electron Headworks meeting 30 C (86 F).
First to last qualifying date each year at Electron Headworks
YearFirst dateLast date
19441944-05-271944-09-10
19451945-07-071945-10-01
19461946-07-191946-08-21
19471947-05-261947-09-22
19481948-06-061948-06-29
19491949-07-141949-08-28
19501950-08-191950-09-21
19511951-06-291951-09-16
19521952-07-081952-10-06
19531953-07-071953-08-14
19551955-06-081955-09-05
19561956-07-081956-08-22
19571957-09-141957-09-14
19581958-05-181958-09-07
19591959-07-181959-07-31
19601960-07-051960-08-09
19611961-06-151961-08-22
19621962-07-231962-07-28
19631963-05-201963-09-09
19651965-07-241965-08-01
19661966-06-151966-06-15
19671967-06-191967-09-27
19681968-06-251968-08-10
19691969-05-231969-06-17
19701970-06-011970-08-22
19711971-07-181971-08-12
19721972-05-281972-08-08
19731973-05-131973-09-05
19741974-07-281974-09-02
19751975-07-041975-07-26
19761976-07-161976-07-16
19771977-08-021977-08-18
19781978-06-031978-08-09
19791979-07-161979-09-14

Every Fixed Threshold

Fixed thresholds at Electron Headworks
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days341519525
35 C (95 F): Days9219511
90 F (32.2 C): Days21719713
100 F (37.8 C): Days1119771
0 C (32 F): Ice days (max3223197212
0 C (32 F): Frost days (min361641955116
-10 C (14 F): Days with min271919509
-20 C (-4 F): Days with min1219502
10 mm (0.39 in): Days with 10 mm or more rain3676194847
25 mm (0.98 in): Days with 25 mm or more rain362519729
50 mm (1.97 in): Days with 50 mm or more rain32619552
100 mm (3.94 in): Days with 100 mm or more rain3119501
10 cm (3.9 in): Days with 10 cm or more snowfall301019563
25 cm (9.8 in): Days with 25 cm or more snowfall5219502

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1944.

Download the Data

  • Data for Electron Headworks 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).