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Built 2026-10-17 (17 October 2026)

Nanaimo A Threshold Days by Year

13 fixed thresholds counted per year at Nanaimo A (CA001025370): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Nanaimo A Thresholds

  • Nanaimo A: days with 10 mm (0.39 in) or more of precipitation in 36 years, most in 1983 with 53.
  • Nanaimo A: days with 25 mm (0.98 in) or more of precipitation in 36 years, most in 1983 with 18.
  • Nanaimo A: nights with a minimum temperature at or below 0 C (32 F) in 35 years, most in 1951 with 139.
  • Nanaimo A: days with 10 cm (3.9 in) or more of snowfall in 34 years, most in 1971 with 11.
  • 13 fixed thresholds have at least one qualifying day at Nanaimo A.
31 years with a qualifying day
Days at or above 30 C (86 F) per year at Nanaimo A Days per year at Nanaimo A with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 27 in 1958. 01020301948: 11949: 21950: 81951: 91952: 121955: 41956: 71958: 271959: 91960: 111961: 131962: 71963: 31965: 91966: 21967: 181968: 151969: 81970: 81971: 171972: 181973: 151974: 141975: 101977: 181978: 91979: 41980: 31981: 91982: 71983: 219481952195919631968197219771981
Days per year at Nanaimo A with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 27 in 1958.
Days at or above 30 C (86 F) per year at Nanaimo A
YearDaysDecade average
194811.5
194921.5
1950810.9
1951910.9
19521210.9
1955410.9
1956710.9
19582710.9
1959910.9
1960119.6
1961139.6
196279.6
196339.6
196599.6
196629.6
1967189.6
1968159.6
196989.6
1970812.6
19711712.6
19721812.6
19731512.6
19741412.6
19751012.6
19771812.6
1978912.6
1979412.6
198035.3
198195.3
198275.3
198325.3
First to last qualifying date each year at Nanaimo A For each year, a bar from the first to the last day at Nanaimo A meeting 30 C (86 F). 1948: 7 June 1948 to 7 June 19481949: 14 July 1949 to 5 September 19491950: 16 June 1950 to 21 August 19501951: 28 June 1951 to 15 September 19511952: 8 July 1952 to 12 August 19521955: 9 June 1955 to 5 September 19551956: 30 May 1956 to 22 August 19561958: 18 May 1958 to 24 August 19581959: 16 July 1959 to 31 July 19591960: 5 July 1960 to 9 August 19601961: 17 June 1961 to 19 August 19611962: 22 July 1962 to 28 July 19621963: 21 May 1963 to 15 June 19631965: 6 July 1965 to 18 August 19651966: 20 August 1966 to 23 August 19661967: 18 June 1967 to 16 September 19671968: 2 July 1968 to 9 August 19681969: 8 June 1969 to 19 June 19691970: 1 June 1970 to 19 July 19701971: 17 July 1971 to 12 August 19711972: 28 May 1972 to 4 September 19721973: 14 May 1973 to 6 September 19731974: 29 July 1974 to 24 September 19741975: 4 July 1975 to 14 August 19751977: 24 July 1977 to 17 August 19771978: 3 June 1978 to 9 August 19781979: 16 July 1979 to 19 July 19791980: 21 July 1980 to 11 August 19801981: 25 July 1981 to 7 September 19811982: 17 June 1982 to 27 July 19821983: 28 May 1983 to 29 May 198319481952195919631968197219771981JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Nanaimo A meeting 30 C (86 F).
First to last qualifying date each year at Nanaimo A
YearFirst dateLast date
19481948-06-071948-06-07
19491949-07-141949-09-05
19501950-06-161950-08-21
19511951-06-281951-09-15
19521952-07-081952-08-12
19551955-06-091955-09-05
19561956-05-301956-08-22
19581958-05-181958-08-24
19591959-07-161959-07-31
19601960-07-051960-08-09
19611961-06-171961-08-19
19621962-07-221962-07-28
19631963-05-211963-06-15
19651965-07-061965-08-18
19661966-08-201966-08-23
19671967-06-181967-09-16
19681968-07-021968-08-09
19691969-06-081969-06-19
19701970-06-011970-07-19
19711971-07-171971-08-12
19721972-05-281972-09-04
19731973-05-141973-09-06
19741974-07-291974-09-24
19751975-07-041975-08-14
19771977-07-241977-08-17
19781978-06-031978-08-09
19791979-07-161979-07-19
19801980-07-211980-08-11
19811981-07-251981-09-07
19821982-06-171982-07-27
19831983-05-281983-05-29

Every Fixed Threshold

Fixed thresholds at Nanaimo A
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days312719582
35 C (95 F): Days7319652
90 F (32.2 C): Days241319582
0 C (32 F): Ice days (max302319505
0 C (32 F): Frost days (min35139195166
-10 C (14 F): Days with min242019503
-20 C (-4 F): Days with min1119681
10 mm (0.39 in): Days with 10 mm or more rain3653198353
25 mm (0.98 in): Days with 25 mm or more rain3618198318
50 mm (1.97 in): Days with 50 mm or more rain20419754
10 cm (3.9 in): Days with 10 cm or more snowfall341119712
25 cm (9.8 in): Days with 25 cm or more snowfall13319712
50 cm (19.7 in): Days with 50 cm or more snowfall1119751

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1948.

Download the Data

  • Data for Nanaimo A 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-15).