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Data as of 2026-10-17
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Built 2026-10-19 (19 October 2026)

Port Radium Threshold Days by Year (CA002203300)

13 fixed thresholds counted per year at Port Radium (CA002203300): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Port Radium Thresholds

  • Port Radium: days with a maximum temperature at or below 0 C (32 F) in 25 years, most in 1959 with 224.
  • Port Radium: nights with a minimum temperature at or below 0 C (32 F) in 25 years, most in 1956 with 274.
  • Port Radium: nights with a minimum temperature at or below -10 C (14 F) in 25 years, most in 1956 with 196.
  • Port Radium: nights with a minimum temperature at or below -20 C (-4 F) in 25 years, most in 1955 with 146.
  • 13 fixed thresholds have at least one qualifying day at Port Radium.
25 years with a qualifying day
Nights at or below 0 C (32 F) per year at Port Radium Days per year at Port Radium with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 274 in 1956. 01002003001938: 2311939: 2331944: 2341945: 2431946: 2411947: 2571948: 2361949: 2591950: 2481951: 2451952: 2471953: 2241954: 2441955: 2351956: 2741957: 2571958: 2381959: 2581960: 2351968: 2101969: 2381970: 2451971: 2221972: 2671973: 217193819451948195119541957196019701973
Days per year at Port Radium with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 274 in 1956.
Nights at or below 0 C (32 F) per year at Port Radium
YearDaysDecade average
1938231232
1939233232
1944234245
1945243245
1946241245
1947257245
1948236245
1949259245
1950248247
1951245247
1952247247
1953224247
1954244247
1955235247
1956274247
1957257247
1958238247
1959258247
1960235227.7
1968210227.7
1969238227.7
1970245237.8
1971222237.8
1972267237.8
1973217237.8
First to last qualifying date each year at Port Radium For each year, a bar from the first to the last day at Port Radium meeting 0 C (32 F). 1938: 1 January 1938 to 30 December 19381939: 1 January 1939 to 31 December 19391944: 1 January 1944 to 31 December 19441945: 1 January 1945 to 31 December 19451946: 1 January 1946 to 31 December 19461947: 1 January 1947 to 31 December 19471948: 1 January 1948 to 31 December 19481949: 1 January 1949 to 31 December 19491950: 1 January 1950 to 31 December 19501951: 1 January 1951 to 31 December 19511952: 1 January 1952 to 31 December 19521953: 1 January 1953 to 31 December 19531954: 1 January 1954 to 31 December 19541955: 1 January 1955 to 31 December 19551956: 1 January 1956 to 31 December 19561957: 1 January 1957 to 31 December 19571958: 1 January 1958 to 31 December 19581959: 1 January 1959 to 31 December 19591960: 1 January 1960 to 31 December 19601968: 1 January 1968 to 31 December 19681969: 1 January 1969 to 31 December 19691970: 1 January 1970 to 31 December 19701971: 1 January 1971 to 31 December 19711972: 1 January 1972 to 31 December 19721973: 1 January 1973 to 31 December 19731938194619501954195819691973JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Port Radium meeting 0 C (32 F).
First to last qualifying date each year at Port Radium
YearFirst dateLast date
19381938-01-011938-12-30
19391939-01-011939-12-31
19441944-01-011944-12-31
19451945-01-011945-12-31
19461946-01-011946-12-31
19471947-01-011947-12-31
19481948-01-011948-12-31
19491949-01-011949-12-31
19501950-01-011950-12-31
19511951-01-011951-12-31
19521952-01-011952-12-31
19531953-01-011953-12-31
19541954-01-011954-12-31
19551955-01-011955-12-31
19561956-01-011956-12-31
19571957-01-011957-12-31
19581958-01-011958-12-31
19591959-01-011959-12-31
19601960-01-011960-12-31
19681968-01-011968-12-31
19691969-01-011969-12-31
19701970-01-011970-12-31
19711971-01-011971-12-31
19721972-01-011972-12-31
19731973-01-011973-12-31

Every Fixed Threshold

Fixed thresholds at Port Radium
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2219552
0 C (32 F): Ice days (max252241959183
0 C (32 F): Frost days (min252741956217
-10 C (14 F): Days with min251961956171
-20 C (-4 F): Days with min251461955107
-30 C (-22 F): Days with min2578195641
-40 C (-40 F): Days with min213019396
20 C (68 F): Tropical nights (min4219482
10 mm (0.39 in): Days with 10 mm or more rain23819383
25 mm (0.98 in): Days with 25 mm or more rain10219481
50 mm (1.97 in): Days with 50 mm or more rain1119481
10 cm (3.9 in): Days with 10 cm or more snowfall13319392
25 cm (9.8 in): Days with 25 cm or more snowfall1119711

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1938.

Download the Data

  • Data for Port Radium 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 (2026-10-17).