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Built 2026-10-19 (19 October 2026)

Glenbrook Threshold Days by Year (USC00263205)

13 fixed thresholds counted per year at Glenbrook (USC00263205): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Glenbrook Thresholds

  • Glenbrook: days with 10 mm (0.39 in) or more of precipitation in 62 years, most in 2017 with 31.
  • Glenbrook: nights with a minimum temperature at or below 0 C (32 F) in 57 years, most in 1978 with 231.
  • Glenbrook: days with 10 cm (3.9 in) or more of snowfall in 57 years, most in 1952 with 32.
  • Glenbrook: nights with a minimum temperature at or below -10 C (14 F) in 56 years, most in 1949 with 45.
  • 13 fixed thresholds have at least one qualifying day at Glenbrook.
42 years with a qualifying day
Days at or above 30 C (86 F) per year at Glenbrook Days per year at Glenbrook with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 46 in 1959. 02040601945: 231946: 281947: 211948: 241949: 261950: 321951: 11953: 161954: 271955: 351956: 141957: 81958: 201959: 461960: 301961: 331962: 41964: 91965: 21966: 201967: 151968: 121969: 141970: 181971: 201972: 151973: 111974: 31977: 101978: 141979: 101981: 121997: 32001: 12003: 42009: 52010: 32013: 82014: 32015: 102016: 182017: 6194519501956196119671972197920092016
Days per year at Glenbrook with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 46 in 1959.
Days at or above 30 C (86 F) per year at Glenbrook
YearDaysDecade average
19452324.4
19462824.4
19472124.4
19482424.4
19492624.4
19503222.1
1951122.1
19531622.1
19542722.1
19553522.1
19561422.1
1957822.1
19582022.1
19594622.1
19603015.4
19613315.4
1962415.4
1964915.4
1965215.4
19662015.4
19671515.4
19681215.4
19691415.4
19701812.6
19712012.6
19721512.6
19731112.6
1974312.6
19771012.6
19781412.6
19791012.6
19811212
199733
200113.3
200343.3
200953.3
201038
201388
201438
2015108
2016188
201768
First to last qualifying date each year at Glenbrook For each year, a bar from the first to the last day at Glenbrook meeting 30 C (86 F). 1945: 19 June 1945 to 12 September 19451946: 26 June 1946 to 28 August 19461947: 16 July 1947 to 15 September 19471948: 29 June 1948 to 14 September 19481949: 9 June 1949 to 23 September 19491950: 27 June 1950 to 2 September 19501951: 18 July 1951 to 18 July 19511953: 5 July 1953 to 11 August 19531954: 18 May 1954 to 27 September 19541955: 7 June 1955 to 7 September 19551956: 26 June 1956 to 2 September 19561957: 26 June 1957 to 8 September 19571958: 9 July 1958 to 1 September 19581959: 18 June 1959 to 9 September 19591960: 3 June 1960 to 20 August 19601961: 14 June 1961 to 22 August 19611962: 27 July 1962 to 16 August 19621964: 10 July 1964 to 24 August 19641965: 14 July 1965 to 6 August 19651966: 19 July 1966 to 17 August 19661967: 30 June 1967 to 30 August 19671968: 25 June 1968 to 6 September 19681969: 19 July 1969 to 22 August 19691970: 24 June 1970 to 15 August 19701971: 14 July 1971 to 13 September 19711972: 29 June 1972 to 11 August 19721973: 26 June 1973 to 14 August 19731974: 30 June 1974 to 30 July 19741977: 24 June 1977 to 15 August 19771978: 22 July 1978 to 9 August 19781979: 16 July 1979 to 9 September 19791981: 28 June 1981 to 27 August 19811997: 5 August 1997 to 7 August 19972001: 2 July 2001 to 2 July 20012003: 21 July 2003 to 30 July 20032009: 17 July 2009 to 28 July 20092010: 15 July 2010 to 25 August 20102013: 29 June 2013 to 22 July 20132014: 13 July 2014 to 15 July 20142015: 30 June 2015 to 10 September 20152016: 28 June 2016 to 20 August 20162017: 19 June 2017 to 5 September 20171945195119581965197119792010JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Glenbrook meeting 30 C (86 F).
First to last qualifying date each year at Glenbrook
YearFirst dateLast date
19451945-06-191945-09-12
19461946-06-261946-08-28
19471947-07-161947-09-15
19481948-06-291948-09-14
19491949-06-091949-09-23
19501950-06-271950-09-02
19511951-07-181951-07-18
19531953-07-051953-08-11
19541954-05-181954-09-27
19551955-06-071955-09-07
19561956-06-261956-09-02
19571957-06-261957-09-08
19581958-07-091958-09-01
19591959-06-181959-09-09
19601960-06-031960-08-20
19611961-06-141961-08-22
19621962-07-271962-08-16
19641964-07-101964-08-24
19651965-07-141965-08-06
19661966-07-191966-08-17
19671967-06-301967-08-30
19681968-06-251968-09-06
19691969-07-191969-08-22
19701970-06-241970-08-15
19711971-07-141971-09-13
19721972-06-291972-08-11
19731973-06-261973-08-14
19741974-06-301974-07-30
19771977-06-241977-08-15
19781978-07-221978-08-09
19791979-07-161979-09-09
19811981-06-281981-08-27
19971997-08-051997-08-07
20012001-07-022001-07-02
20032003-07-212003-07-30
20092009-07-172009-07-28
20102010-07-152010-08-25
20132013-06-292013-07-22
20142014-07-132014-07-15
20152015-06-302015-09-10
20162016-06-282016-08-20
20172017-06-192017-09-05

Every Fixed Threshold

Fixed thresholds at Glenbrook
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days424619596
35 C (95 F): Days5219552
90 F (32.2 C): Days292919593
0 C (32 F): Ice days (max452719528
0 C (32 F): Frost days (min572311978115
-10 C (14 F): Days with min564519492
-20 C (-4 F): Days with min3219722
10 mm (0.39 in): Days with 10 mm or more rain6231201718
25 mm (0.98 in): Days with 25 mm or more rain541520177
50 mm (1.97 in): Days with 50 mm or more rain17319551
10 cm (3.9 in): Days with 10 cm or more snowfall573219529
25 cm (9.8 in): Days with 25 cm or more snowfall40719523
50 cm (19.7 in): Days with 50 cm or more snowfall10219581

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 Glenbrook 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 (2026-10-12).