Daily records
Page built 2026-10-15
Data as of 2026-10-14
Search
Built 2026-10-15 (15 October 2026)

Mill Bay Threshold Days by Year

13 fixed thresholds counted per year at Mill Bay (CA001065130): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mill Bay Thresholds

  • Mill Bay: days with a maximum temperature at or below 0 C (32 F) in 44 years, most in 1916 with 63.
  • Mill Bay: days with 10 mm (0.39 in) or more of precipitation in 44 years, most in 1932 with 99.
  • Mill Bay: days with 25 mm (0.98 in) or more of precipitation in 44 years, most in 1932 with 36.
  • Mill Bay: days with 10 cm (3.9 in) or more of snowfall in 44 years, most in 1948 with 41.
  • 13 fixed thresholds have at least one qualifying day at Mill Bay.
21 years with a qualifying day
Days at or above 30 C (86 F) per year at Mill Bay Days per year at Mill Bay with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 5 in 1937. 02461915: 11923: 31924: 11925: 11927: 21929: 11934: 21936: 11937: 51938: 11940: 11941: 11942: 11946: 11947: 21948: 21950: 11952: 31956: 31957: 11958: 31915192519341938194219481956
Days per year at Mill Bay with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 5 in 1937.
Days at or above 30 C (86 F) per year at Mill Bay
YearDaysDecade average
191511
192331.6
192411.6
192511.6
192721.6
192911.6
193422.3
193612.3
193752.3
193812.3
194011.3
194111.3
194211.3
194611.3
194721.3
194821.3
195012.2
195232.2
195632.2
195712.2
195832.2
First to last qualifying date each year at Mill Bay For each year, a bar from the first to the last day at Mill Bay meeting 30 C (86 F). 1915: 26 July 1915 to 26 July 19151923: 5 June 1923 to 20 August 19231924: 25 July 1924 to 25 July 19241925: 25 June 1925 to 25 June 19251927: 17 August 1927 to 18 August 19271929: 2 August 1929 to 2 August 19291934: 24 July 1934 to 25 July 19341936: 3 June 1936 to 3 June 19361937: 6 June 1937 to 10 June 19371938: 1 September 1938 to 1 September 19381940: 8 September 1940 to 8 September 19401941: 15 July 1941 to 15 July 19411942: 7 August 1942 to 7 August 19421946: 28 August 1946 to 28 August 19461947: 26 May 1947 to 27 May 19471948: 10 June 1948 to 11 June 19481950: 17 June 1950 to 17 June 19501952: 11 July 1952 to 13 July 19521956: 18 July 1956 to 19 August 19561957: 3 August 1957 to 3 August 19571958: 6 June 1958 to 20 June 19581915192519341938194219481956JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mill Bay meeting 30 C (86 F).
First to last qualifying date each year at Mill Bay
YearFirst dateLast date
19151915-07-261915-07-26
19231923-06-051923-08-20
19241924-07-251924-07-25
19251925-06-251925-06-25
19271927-08-171927-08-18
19291929-08-021929-08-02
19341934-07-241934-07-25
19361936-06-031936-06-03
19371937-06-061937-06-10
19381938-09-011938-09-01
19401940-09-081940-09-08
19411941-07-151941-07-15
19421942-08-071942-08-07
19461946-08-281946-08-28
19471947-05-261947-05-27
19481948-06-101948-06-11
19501950-06-171950-06-17
19521952-07-111952-07-13
19561956-07-181956-08-19
19571957-08-031957-08-03
19581958-06-061958-06-20

Every Fixed Threshold

Fixed thresholds at Mill Bay
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days21519373
90 F (32.2 C): Days3319583
0 C (32 F): Ice days (max4463191622
0 C (32 F): Frost days (min42161191876
-10 C (14 F): Days with min414319163
-20 C (-4 F): Days with min112019501
10 mm (0.39 in): Days with 10 mm or more rain4499193279
25 mm (0.98 in): Days with 25 mm or more rain4436193222
50 mm (1.97 in): Days with 50 mm or more rain411019496
100 mm (3.94 in): Days with 100 mm or more rain6219211
10 cm (3.9 in): Days with 10 cm or more snowfall444119487
25 cm (9.8 in): Days with 25 cm or more snowfall421919481
50 cm (19.7 in): Days with 50 cm or more snowfall16719492

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1915.

Download the Data

  • Data for Mill Bay 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-14).