Built 2026-10-19 (19 October 2026)

Cardston Weather Records (CA003031320)

Record envelope, standing records and threshold days for Cardston (CA003031320), Alberta, Canada, with 88 years of record.

Key Facts for Cardston

  • Cardston (CA003031320) is a weather station in Alberta, Canada at 49.13 latitude and -113.25 longitude, 1,193 m (3,914 ft) above sea level.
  • The station reports from 1918 to 2005, 88 years of record.
  • 1,464 records set at Cardston still stand.
  • Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
  • Cardston set a daily record low minimum temperature of -36.5 C (-33.7 F) on 24 December 1983.

About the Station

  • Location: Alberta, Canada, 49.13 latitude, -113.25 longitude.
  • Elevation: 1,193 m (3,914 ft).
  • Period of record: 1918 to 2005, 88 years.
  • Eligible elements: tmax, tmin, prcp, snow.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Cardston, with 2026 drawn through them The band shows the record high and record low for each calendar day at Cardston. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -60-40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Cardston. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Cardston, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan16.0 C (60.8 F)-41.7 C (-43.1 F)n/an/a
Feb18.9 C (66.0 F)-38.9 C (-38.0 F)n/an/a
Mar20.6 C (69.1 F)-36.7 C (-34.1 F)n/an/a
Apr28.9 C (84.0 F)-25.6 C (-14.1 F)n/an/a
May32.2 C (90.0 F)-12.8 C (9.0 F)n/an/a
Jun35.6 C (96.1 F)-5.6 C (21.9 F)n/an/a
Jul38.9 C (102.0 F)0.6 C (33.1 F)n/an/a
Aug36.7 C (98.1 F)-3.9 C (25.0 F)n/an/a
Sep34.4 C (93.9 F)-15.6 C (3.9 F)n/an/a
Oct28.9 C (84.0 F)-20.6 C (-5.1 F)n/an/a
Nov23.9 C (75.0 F)-35.6 C (-32.1 F)n/an/a
Dec19.4 C (66.9 F)-38.5 C (-37.3 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Cardston by the year they were set 1,464 records at Cardston still stand. 1936 holds the most, with 69. 0204060801918: 111919: 191921: 11922: 121923: 161924: 361925: 351926: 301927: 121928: 291929: 281930: 221931: 311932: 211933: 261934: 501935: 291936: 691937: 111938: 151939: 481940: 251941: 151942: 111943: 321944: 131945: 51946: 131947: 171948: 111949: 271950: 271951: 511952: 191953: 171954: 381955: 301956: 291957: 241958: 181959: 181960: 161961: 151962: 241963: 311964: 271965: 411966: 171967: 121968: 111969: 121970: 191971: 221972: 221973: 241974: 191975: 171976: 141977: 221978: 131979: 191980: 231981: 231982: 81983: 221918192619331940194719541961196819751982
1,464 records at Cardston still stand. 1936 holds the most, with 69.
Standing records at Cardston by the year they were set
Year setStanding records
191811
191919
19211
192212
192316
192436
192535
192630
192712
192829
192928
193022
193131
193221
193326
193450
193529
193669
193711
193815
193948
194025
194115
194211
194332
194413
19455
194613
194717
194811
194927
195027
195151
195219
195317
195438
195530
195629
195724
195818
195918
196016
196115
196224
196331
196427
196541
196617
196712
196811
196912
197019
197122
197222
197324
197419
197517
197614
197722
197813
197919
198023
198123
19828
198322

Wettest Day of Each Month

Jun: 102.1 mm (4.0 in)
Record daily precipitation for each month at Cardston The wettest day on record for each calendar month at Cardston. The most was 102.1 mm (4.0 in) on 12 June 1937. 050100150 Jan: 24.1 mm (0.9 in), 24 January 1959 Jan Feb: 20.3 mm (0.8 in), 25 February 1946 Feb Mar: 33.0 mm (1.3 in), 27 March 1977 Mar Apr: 88.9 mm (3.5 in), 30 April 1951 Apr May: 78.7 mm (3.1 in), 15 May 1981 May Jun: 102.1 mm (4.0 in), 12 June 1937 Jun Jul: 60.5 mm (2.4 in), 9 July 1965 Jul Aug: 50.8 mm (2.0 in), 12 August 1918 Aug Sep: 53.8 mm (2.1 in), 14 September 1927 Sep Oct: 33.0 mm (1.3 in), 12 October 1934 Oct Nov: 35.6 mm (1.4 in), 17 November 1946 Nov Dec: 33.0 mm (1.3 in), 6 December 1936 Dec
The wettest day on record for each calendar month at Cardston. The most was 102.1 mm (4.0 in) on 12 June 1937.
Record daily precipitation for each month at Cardston
MonthRecord daily precipitation (mm)Date
Jan24.1 mm (0.9 in)24 January 1959
Feb20.3 mm (0.8 in)25 February 1946
Mar33.0 mm (1.3 in)27 March 1977
Apr88.9 mm (3.5 in)30 April 1951
May78.7 mm (3.1 in)15 May 1981
Jun102.1 mm (4.0 in)12 June 1937
Jul60.5 mm (2.4 in)9 July 1965
Aug50.8 mm (2.0 in)12 August 1918
Sep53.8 mm (2.1 in)14 September 1927
Oct33.0 mm (1.3 in)12 October 1934
Nov35.6 mm (1.4 in)17 November 1946
Dec33.0 mm (1.3 in)6 December 1936

Period of Record Coverage

1918 to 1983
Days with data per year at Cardston 65 years of record at Cardston, 1918 to 1983. 13 years have data for under 90 percent of days and are left out of rankings: 1918, 1919, 1921, 1922, 1926, 1927, 1928, 1929 and others. 1918: 91 of 365 days1919: 181 of 365 days1921: 61 of 365 days1922: 118 of 365 days1923: 357 of 365 days1924: 358 of 366 days1925: 358 of 365 days1926: 274 of 365 days1927: 302 of 365 days1928: 325 of 366 days1929: 326 of 365 days1930: 361 of 365 days1931: 363 of 365 days1932: 335 of 366 days1933: 333 of 365 days1934: 364 of 365 days1935: 363 of 365 days1936: 366 of 366 days1937: 365 of 365 days1938: 363 of 365 days1939: 364 of 365 days1940: 366 of 366 days1941: 363 of 365 days1942: 365 of 365 days1943: 365 of 365 days1944: 366 of 366 days1945: 365 of 365 days1946: 365 of 365 days1947: 364 of 365 days1948: 366 of 366 days1949: 363 of 365 days1950: 364 of 365 days1951: 364 of 365 days1952: 366 of 366 days1953: 365 of 365 days1954: 365 of 365 days1955: 364 of 365 days1956: 366 of 366 days1957: 363 of 365 days1958: 364 of 365 days1959: 343 of 365 days1960: 305 of 366 days1961: 365 of 365 days1962: 359 of 365 days1963: 364 of 365 days1964: 366 of 366 days1965: 362 of 365 days1966: 364 of 365 days1967: 212 of 365 days1968: 214 of 366 days1969: 214 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 365 of 366 days1973: 272 of 365 days1974: 360 of 365 days1975: 363 of 365 days1976: 364 of 366 days1977: 364 of 365 days1978: 359 of 365 days1979: 365 of 365 days1980: 365 of 366 days1981: 349 of 365 days1982: 359 of 365 days1983: 362 of 365 days193019401950196019701980
65 years of record at Cardston, 1918 to 1983. 13 years have data for under 90 percent of days and are left out of rankings: 1918, 1919, 1921, 1922, 1926, 1927, 1928, 1929 and others.
Days with data per year at Cardston
YearDays with dataShare of yearComplete
19189125%No
191918150%No
19216117%No
192211832%No
192335798%Yes
192435898%Yes
192535898%Yes
192627475%No
192730283%No
192832589%No
192932689%No
193036199%Yes
193136399%Yes
193233592%Yes
193333391%Yes
1934364100%Yes
193536399%Yes
1936366100%Yes
1937365100%Yes
193836399%Yes
1939364100%Yes
1940366100%Yes
194136399%Yes
1942365100%Yes
1943365100%Yes
1944366100%Yes
1945365100%Yes
1946365100%Yes
1947364100%Yes
1948366100%Yes
194936399%Yes
1950364100%Yes
1951364100%Yes
1952366100%Yes
1953365100%Yes
1954365100%Yes
1955364100%Yes
1956366100%Yes
195736399%Yes
1958364100%Yes
195934394%Yes
196030583%No
1961365100%Yes
196235998%Yes
1963364100%Yes
1964366100%Yes
196536299%Yes
1966364100%Yes
196721258%No
196821458%No
196921459%No
1970365100%Yes
1971365100%Yes
1972365100%Yes
197327275%No
197436099%Yes
197536399%Yes
197636499%Yes
1977364100%Yes
197835998%Yes
1979365100%Yes
1980365100%Yes
198134996%Yes
198235998%Yes
198336299%Yes

Latest Records

20
Latest records at Cardston
DateStationRecordValueBeat old record byOld record stoodSignificance
24 December 1983Cardston, CAdaily low min-36.5 C (-33.7 F)3.7 C (6.7 F)18 years14 of 100 (Routine)
23 December 1983Cardston, CAdaily low max-27.5 C (-17.5 F)5.8 C (10.4 F)18 years17 of 100 (Routine)
23 December 1983Cardston, CAdaily low min-33.0 C (-27.4 F)4.7 C (8.5 F)12 years13 of 100 (Routine)
22 December 1983Cardston, CAdaily low max-21.0 C (-5.8 F)1.0 C (1.8 F)18 years12 of 100 (Routine)
22 December 1983Cardston, CAdaily low min-28.0 C (-18.4 F)3.0 C (5.4 F)12 years12 of 100 (Routine)
20 December 1983Cardston, CAdaily low max-22.5 C (-8.5 F)1.4 C (2.5 F)18 years12 of 100 (Routine)
19 December 1983Cardston, CAdaily low max-22.5 C (-8.5 F)0.3 C (0.5 F)33 years16 of 100 (Routine)
28 November 1983Cardston, CAdaily rain9.0 mm (0.35 in)6.0 mm (0.24 in)6 years19 of 100 (Routine)
28 November 1983Cardston, CAdaily snowfall9.0 cm (3.5 in)6.0 cm (2.4 in)6 years19 of 100 (Routine)
27 November 1983Cardston, CAdaily rain21.0 mm (0.8 in)18.5 mm (0.7 in)57 years20 of 100 (Routine)
27 November 1983Cardston, CAdaily snowfall21.0 cm (8.3 in)18.5 cm (7.3 in)57 years57 of 100 (Notable)
31 October 1983Cardston, CAdaily high min7.0 C (44.6 F)0.3 C (0.5 F)37 years17 of 100 (Routine)
26 October 1983Cardston, CAdaily high max24.0 C (75.2 F)0.7 C (1.3 F)38 years17 of 100 (Routine)
1 September 1983Cardston, CAdaily high min17.0 C (62.6 F)0.9 C (1.6 F)12 years11 of 100 (Routine)
11 August 1983Cardston, CAdaily high min17.5 C (63.5 F)1.4 C (2.5 F)54 years26 of 100 (Routine)
11 August 1983Cardston, CAdaily rain10.4 mm (0.4 in)1.8 mm (0.07 in)24 years15 of 100 (Routine)
6 August 1983Cardston, CAdaily high max34.5 C (94.1 F)1.2 C (2.2 F)33 years18 of 100 (Routine)
2 August 1983Cardston, CAdaily high min17.0 C (62.6 F)1.4 C (2.5 F)64 years29 of 100 (Routine)
1 August 1983Cardston, CAdaily high min17.0 C (62.6 F)0.9 C (1.6 F)30 years17 of 100 (Routine)
17 July 1983Cardston, CAdaily low min4.0 C (39.2 F)0.4 C (0.7 F)58 years24 of 100 (Routine)

Climate Trend

49 complete years, 1923 to 1983
Annual mean temperature at Cardston as warming stripes, 1923 to 1983 One stripe for each of 49 complete years at Cardston, 1923 to 1983. Blue stripes are years cooler than the station's own mean of 5.0 C (41.1 F); red stripes are warmer. The coolest year was 1951, at 2.3 C (36.1 F), and the warmest was 1934, at 7.0 C (44.5 F). The strongest colour marks a difference of 2.8 C (5.0 F). 1923: 5.1 C, +0.1 C from the station mean1924: 4.3 C, -0.7 C from the station mean1925: 5.7 C, +0.7 C from the station mean1930: 5.4 C, +0.4 C from the station mean1931: 6.7 C, +1.7 C from the station mean1934: 7.0 C, +1.9 C from the station mean1935: 5.0 C, 0.0 C from the station mean1936: 4.6 C, -0.4 C from the station mean1937: 4.0 C, -1.0 C from the station mean1938: 5.6 C, +0.6 C from the station mean1939: 6.6 C, +1.6 C from the station mean1940: 5.5 C, +0.5 C from the station mean1941: 6.2 C, +1.2 C from the station mean1942: 5.0 C, 0.0 C from the station mean1943: 5.1 C, 0.0 C from the station mean1944: 5.7 C, +0.7 C from the station mean1945: 4.5 C, -0.6 C from the station mean1946: 5.1 C, +0.1 C from the station mean1947: 4.9 C, -0.1 C from the station mean1948: 4.0 C, -1.0 C from the station mean1949: 4.3 C, -0.8 C from the station mean1950: 3.3 C, -1.8 C from the station mean1951: 2.3 C, -2.8 C from the station mean1952: 5.2 C, +0.2 C from the station mean1953: 5.4 C, +0.4 C from the station mean1954: 4.5 C, -0.5 C from the station mean1955: 3.1 C, -2.0 C from the station mean1956: 5.1 C, +0.1 C from the station mean1957: 4.6 C, -0.4 C from the station mean1958: 5.8 C, +0.8 C from the station mean1961: 6.1 C, +1.0 C from the station mean1962: 5.4 C, +0.4 C from the station mean1963: 6.2 C, +1.2 C from the station mean1964: 4.4 C, -0.7 C from the station mean1965: 4.3 C, -0.8 C from the station mean1966: 5.2 C, +0.1 C from the station mean1970: 4.6 C, -0.5 C from the station mean1971: 4.6 C, -0.4 C from the station mean1972: 3.5 C, -1.6 C from the station mean1974: 5.0 C, 0.0 C from the station mean1975: 3.8 C, -1.2 C from the station mean1976: 6.3 C, +1.2 C from the station mean1977: 6.2 C, +1.2 C from the station mean1978: 4.0 C, -1.0 C from the station mean1979: 5.5 C, +0.5 C from the station mean1980: 5.4 C, +0.3 C from the station mean1981: 6.9 C, +1.9 C from the station mean1982: 3.8 C, -1.2 C from the station mean1983: 5.9 C, +0.9 C from the station mean1923193019401950196019701980
One stripe for each of 49 complete years at Cardston, 1923 to 1983. Blue stripes are years cooler than the station's own mean of 5.0 C (41.1 F); red stripes are warmer. The coolest year was 1951, at 2.3 C (36.1 F), and the warmest was 1934, at 7.0 C (44.5 F). The strongest colour marks a difference of 2.8 C (5.0 F).
Annual mean temperature at Cardston as warming stripes, 1923 to 1983
YearAnnual mean temperatureDifference from the station mean
19235.1 C+0.07 C
19244.3 C-0.73 C
19255.7 C+0.65 C
19305.4 C+0.39 C
19316.7 C+1.69 C
19347.0 C+1.93 C
19355.0 C-0.01 C
19364.6 C-0.40 C
19374.0 C-1.02 C
19385.6 C+0.56 C
19396.6 C+1.57 C
19405.5 C+0.48 C
19416.2 C+1.16 C
19425.0 C-0.05 C
19435.1 C+0.02 C
19445.7 C+0.65 C
19454.5 C-0.56 C
19465.1 C+0.08 C
19474.9 C-0.10 C
19484.0 C-1.01 C
19494.3 C-0.79 C
19503.3 C-1.77 C
19512.3 C-2.79 C
19525.2 C+0.19 C
19535.4 C+0.38 C
19544.5 C-0.51 C
19553.1 C-1.98 C
19565.1 C+0.06 C
19574.6 C-0.45 C
19585.8 C+0.77 C
19616.1 C+1.01 C
19625.4 C+0.40 C
19636.2 C+1.19 C
19644.4 C-0.67 C
19654.3 C-0.77 C
19665.2 C+0.11 C
19704.6 C-0.48 C
19714.6 C-0.40 C
19723.5 C-1.56 C
19745.0 C-0.01 C
19753.8 C-1.23 C
19766.3 C+1.23 C
19776.2 C+1.18 C
19784.0 C-1.03 C
19795.5 C+0.46 C
19805.4 C+0.33 C
19816.9 C+1.89 C
19823.8 C-1.25 C
19835.9 C+0.90 C

The fitted trend in annual mean temperature here over 1923 to 1983 is -0.04 C (-0.22 to 0.13) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.4 to 0.2) per decade. The slope is a straight line fitted to 49 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Cardston
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.04 C (-0.22 to 0.13) per decade-0.1 F (-0.4 to 0.2) per decade1923 to 198349Not clearly different from zero
Mean daily maximum0.1 C (-0.2 to 0.3) per decade0.1 F (-0.3 to 0.5) per decade1923 to 198349Not clearly different from zero
Mean daily minimum-0.15 C (-0.32 to 0.02) per decade-0.27 F (-0.58 to 0.04) per decade1923 to 198349Not clearly different from zero

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1918 to 1983
Yearly extremes at Cardston: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)38.9 C (102.0 F)193933.3 C (91.9 F)65
Coldest night (TNn)-41.7 C (-43.1 F)1929-32.8 C (-27.0 F)65
Wettest day (Rx1day)102.1 mm (4.0 in)193740.6 mm (1.6 in)65
Wettest five days (Rx5day)156.9 mm (6.2 in)197565.1 mm (2.6 in)65
Longest dry spell (CDD)78 days196928 days65

Hottest day (TXx)

Hottest day (TXx) at Cardston by year The hottest day of the year at Cardston, 1918 to 1983. The record is 38.9 C (102.0 F) in 1939, marked on the chart; the median year is 33.3 C (91.9 F). 253035401920194019601980Record: 38.9 C (102.0 F) in 1939
The hottest day of the year at Cardston, 1918 to 1983. The record is 38.9 C (102.0 F) in 1939, marked on the chart; the median year is 33.3 C (91.9 F).
Hottest day (TXx) at Cardston by year
YearHottest day (TXx)
191836.7 C (98.1 F)
191936.1 C (97.0 F)
192125.6 C (78.1 F)
192228.9 C (84.0 F)
192331.1 C (88.0 F)
192432.2 C (90.0 F)
192533.9 C (93.0 F)
192633.3 C (91.9 F)
192731.7 C (89.1 F)
192833.9 C (93.0 F)
192934.4 C (93.9 F)
193035.0 C (95.0 F)
193135.6 C (96.1 F)
193232.8 C (91.0 F)
193336.7 C (98.1 F)
193434.4 C (93.9 F)
193534.4 C (93.9 F)
193636.7 C (98.1 F)
193734.4 C (93.9 F)
193834.4 C (93.9 F)
193938.9 C (102.0 F)
194034.4 C (93.9 F)
194135.6 C (96.1 F)
194231.1 C (88.0 F)
194332.2 C (90.0 F)
194433.3 C (91.9 F)
194532.2 C (90.0 F)
194632.2 C (90.0 F)
194733.3 C (91.9 F)
194830.0 C (86.0 F)
194933.3 C (91.9 F)
195034.4 C (93.9 F)
195132.2 C (90.0 F)
195231.1 C (88.0 F)
195333.9 C (93.0 F)
195431.7 C (89.1 F)
195532.2 C (90.0 F)
195632.2 C (90.0 F)
195732.2 C (90.0 F)
195832.2 C (90.0 F)
195933.9 C (93.0 F)
196035.0 C (95.0 F)
196136.1 C (97.0 F)
196234.4 C (93.9 F)
196332.2 C (90.0 F)
196432.2 C (90.0 F)
196531.7 C (89.1 F)
196631.7 C (89.1 F)
196731.7 C (89.1 F)
196831.7 C (89.1 F)
196936.1 C (97.0 F)
197032.8 C (91.0 F)
197134.4 C (93.9 F)
197231.7 C (89.1 F)
197335.0 C (95.0 F)
197431.1 C (88.0 F)
197534.4 C (93.9 F)
197630.6 C (87.1 F)
197731.7 C (89.1 F)
197834.5 C (94.1 F)
197934.5 C (94.1 F)
198032.0 C (89.6 F)
198134.0 C (93.2 F)
198231.0 C (87.8 F)
198334.5 C (94.1 F)

Coldest night (TNn)

Coldest night (TNn) at Cardston by year The coldest night of the year at Cardston, 1918 to 1983. The record is -41.7 C (-43.1 F) in 1929, marked on the chart; the median year is -32.8 C (-27.0 F). -50-40-30-20-1001920194019601980Record: -41.7 C (-43.1 F) in 1929
The coldest night of the year at Cardston, 1918 to 1983. The record is -41.7 C (-43.1 F) in 1929, marked on the chart; the median year is -32.8 C (-27.0 F).
Coldest night (TNn) at Cardston by year
YearColdest night (TNn)
1918-6.7 C (19.9 F)
1919-6.7 C (19.9 F)
1921-7.2 C (19.0 F)
1922-32.2 C (-26.0 F)
1923-36.7 C (-34.1 F)
1924-38.3 C (-36.9 F)
1925-26.7 C (-16.1 F)
1926-20.6 C (-5.1 F)
1927-35.6 C (-32.1 F)
1928-30.6 C (-23.1 F)
1929-41.7 C (-43.1 F)
1930-37.2 C (-35.0 F)
1931-24.4 C (-11.9 F)
1932-32.8 C (-27.0 F)
1933-32.2 C (-26.0 F)
1934-31.7 C (-25.1 F)
1935-36.7 C (-34.1 F)
1936-38.9 C (-38.0 F)
1937-33.3 C (-27.9 F)
1938-32.2 C (-26.0 F)
1939-37.8 C (-36.0 F)
1940-28.9 C (-20.0 F)
1941-27.8 C (-18.0 F)
1942-32.2 C (-26.0 F)
1943-40.0 C (-40.0 F)
1944-25.6 C (-14.1 F)
1945-27.8 C (-18.0 F)
1946-33.3 C (-27.9 F)
1947-36.7 C (-34.1 F)
1948-32.2 C (-26.0 F)
1949-35.6 C (-32.1 F)
1950-38.9 C (-38.0 F)
1951-36.7 C (-34.1 F)
1952-34.4 C (-29.9 F)
1953-28.3 C (-18.9 F)
1954-38.3 C (-36.9 F)
1955-35.6 C (-32.1 F)
1956-33.9 C (-29.0 F)
1957-37.2 C (-35.0 F)
1958-28.9 C (-20.0 F)
1959-34.4 C (-29.9 F)
1960-35.0 C (-31.0 F)
1961-30.6 C (-23.1 F)
1962-32.2 C (-26.0 F)
1963-32.8 C (-27.0 F)
1964-35.6 C (-32.1 F)
1965-31.7 C (-25.1 F)
1966-32.8 C (-27.0 F)
1967-25.6 C (-14.1 F)
1968-17.8 C (0.0 F)
1969-12.2 C (10.0 F)
1970-32.8 C (-27.0 F)
1971-37.8 C (-36.0 F)
1972-37.2 C (-35.0 F)
1973-28.9 C (-20.0 F)
1974-32.8 C (-27.0 F)
1975-29.4 C (-20.9 F)
1976-36.1 C (-33.0 F)
1977-38.5 C (-37.3 F)
1978-38.5 C (-37.3 F)
1979-33.5 C (-28.3 F)
1980-33.5 C (-28.3 F)
1981-30.5 C (-22.9 F)
1982-33.5 C (-28.3 F)
1983-36.5 C (-33.7 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Cardston by year The wettest day of the year at Cardston, 1918 to 1983. The record is 102.1 mm (4.0 in) in 1937, marked on the chart; the median year is 40.6 mm (1.6 in). 02550751001251920194019601980Record: 102.1 mm (4.0 in) in 1937
The wettest day of the year at Cardston, 1918 to 1983. The record is 102.1 mm (4.0 in) in 1937, marked on the chart; the median year is 40.6 mm (1.6 in).
Wettest day (Rx1day) at Cardston by year
YearWettest day (Rx1day)
191850.8 mm (2.0 in)
191963.5 mm (2.5 in)
192115.2 mm (0.6 in)
192217.8 mm (0.7 in)
192365.0 mm (2.6 in)
192462.0 mm (2.4 in)
192536.6 mm (1.4 in)
192632.8 mm (1.3 in)
192754.6 mm (2.1 in)
192862.0 mm (2.4 in)
192946.5 mm (1.8 in)
193048.3 mm (1.9 in)
193147.5 mm (1.9 in)
193268.3 mm (2.7 in)
193329.5 mm (1.2 in)
193435.6 mm (1.4 in)
193515.7 mm (0.6 in)
193633.0 mm (1.3 in)
1937102.1 mm (4.0 in)
193833.0 mm (1.3 in)
193927.4 mm (1.1 in)
194044.2 mm (1.7 in)
194130.5 mm (1.2 in)
194244.7 mm (1.8 in)
194334.5 mm (1.4 in)
194423.9 mm (0.9 in)
194540.6 mm (1.6 in)
194635.6 mm (1.4 in)
194743.2 mm (1.7 in)
194844.7 mm (1.8 in)
194924.9 mm (1.0 in)
195030.5 mm (1.2 in)
195188.9 mm (3.5 in)
195240.6 mm (1.6 in)
195354.4 mm (2.1 in)
195436.8 mm (1.4 in)
195547.2 mm (1.9 in)
195637.8 mm (1.5 in)
195720.3 mm (0.8 in)
195838.4 mm (1.5 in)
195934.0 mm (1.3 in)
196030.5 mm (1.2 in)
196121.6 mm (0.9 in)
196252.6 mm (2.1 in)
196372.1 mm (2.8 in)
196456.9 mm (2.2 in)
196560.5 mm (2.4 in)
196653.3 mm (2.1 in)
196745.7 mm (1.8 in)
196849.0 mm (1.9 in)
196955.1 mm (2.2 in)
197052.6 mm (2.1 in)
197132.3 mm (1.3 in)
197231.0 mm (1.2 in)
197329.5 mm (1.2 in)
197450.8 mm (2.0 in)
197591.7 mm (3.6 in)
197639.9 mm (1.6 in)
197736.8 mm (1.4 in)
197844.5 mm (1.8 in)
197920.0 mm (0.8 in)
198040.0 mm (1.6 in)
198178.7 mm (3.1 in)
198223.6 mm (0.9 in)
198331.0 mm (1.2 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Cardston by year The wettest five days of the year at Cardston, 1918 to 1983. The record is 156.9 mm (6.2 in) in 1975, marked on the chart; the median year is 65.1 mm (2.6 in). 0501001502001920194019601980Record: 156.9 mm (6.2 in) in 1975
The wettest five days of the year at Cardston, 1918 to 1983. The record is 156.9 mm (6.2 in) in 1975, marked on the chart; the median year is 65.1 mm (2.6 in).
Wettest five days (Rx5day) at Cardston by year
YearWettest five days (Rx5day)
191853.1 mm (2.1 in)
191973.7 mm (2.9 in)
192115.2 mm (0.6 in)
192223.0 mm (0.9 in)
192372.7 mm (2.9 in)
192492.8 mm (3.7 in)
192547.7 mm (1.9 in)
192665.1 mm (2.6 in)
1927129.6 mm (5.1 in)
192883.3 mm (3.3 in)
192951.6 mm (2.0 in)
193091.5 mm (3.6 in)
193157.2 mm (2.3 in)
193280.5 mm (3.2 in)
193342.7 mm (1.7 in)
193497.5 mm (3.8 in)
193523.9 mm (0.9 in)
193639.1 mm (1.5 in)
1937127.9 mm (5.0 in)
193854.4 mm (2.1 in)
193946.7 mm (1.8 in)
194078.7 mm (3.1 in)
194155.2 mm (2.2 in)
194284.3 mm (3.3 in)
194343.1 mm (1.7 in)
194427.9 mm (1.1 in)
194578.1 mm (3.1 in)
194676.3 mm (3.0 in)
194760.9 mm (2.4 in)
194887.4 mm (3.4 in)
194936.5 mm (1.4 in)
195040.1 mm (1.6 in)
1951115.8 mm (4.6 in)
195258.8 mm (2.3 in)
1953115.0 mm (4.5 in)
195471.4 mm (2.8 in)
195584.7 mm (3.3 in)
1956100.1 mm (3.9 in)
195762.2 mm (2.4 in)
195852.7 mm (2.1 in)
195961.7 mm (2.4 in)
196048.3 mm (1.9 in)
196147.0 mm (1.9 in)
196254.4 mm (2.1 in)
196398.0 mm (3.9 in)
1964113.0 mm (4.4 in)
196576.6 mm (3.0 in)
1966109.9 mm (4.3 in)
196776.2 mm (3.0 in)
1968100.3 mm (3.9 in)
1969115.0 mm (4.5 in)
1970102.7 mm (4.0 in)
197150.1 mm (2.0 in)
197261.7 mm (2.4 in)
197333.6 mm (1.3 in)
197492.6 mm (3.6 in)
1975156.9 mm (6.2 in)
197663.7 mm (2.5 in)
197747.7 mm (1.9 in)
197880.0 mm (3.1 in)
197935.5 mm (1.4 in)
1980139.0 mm (5.5 in)
1981111.4 mm (4.4 in)
198250.0 mm (2.0 in)
198338.0 mm (1.5 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Cardston by year The longest dry spell of the year at Cardston, 1918 to 1983. The record is 78 days in 1969, marked on the chart; the median year is 28 days. 0204060801920194019601980Record: 78 days in 1969
The longest dry spell of the year at Cardston, 1918 to 1983. The record is 78 days in 1969, marked on the chart; the median year is 28 days.
Longest dry spell (CDD) at Cardston by year
YearLongest dry spell (CDD)
191837 days
191922 days
192119 days
192216 days
192328 days
192428 days
192523 days
192640 days
192721 days
192835 days
192956 days
193039 days
193133 days
193227 days
193330 days
193447 days
193543 days
193623 days
193732 days
193834 days
193942 days
194033 days
194139 days
194221 days
194337 days
194432 days
194530 days
194624 days
194722 days
194852 days
194928 days
195023 days
195114 days
195240 days
195328 days
195425 days
195528 days
195629 days
195714 days
195819 days
195919 days
196030 days
196127 days
196233 days
196336 days
196430 days
196536 days
196621 days
196727 days
196815 days
196978 days
197031 days
197124 days
197233 days
197345 days
197432 days
197519 days
197625 days
197735 days
197816 days
197919 days
198019 days
198138 days
198223 days
198327 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

49 years with a frost

Across 49 years with a frost, the median last spring frost at Cardston falls on 22 May and the median first autumn frost on 15 September, which leaves a median of 113 days between them.

Fitted over all years, the growing season changes by +0.6 days per decade at this station.

Frost dates and growing season at Cardston
MeasureMedian, all yearsEarliest periodRecent period (1948 to 1983)Recent against earliestFitted trend
Last spring frost22 Mayn/a21 Mayn/a-0.5 days per decade
First autumn frost15 Septembern/a15 Septembern/a+0.1 days per decade
Growing days113 daysn/a116 daysn/a+0.6 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

53 years, 1923 to 1983

A day with at least 40.1 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 109.7 mm (4.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Cardston: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years40.1 mm (1.6 in)
5 years56.3 mm (2.2 in)
10 years67.9 mm (2.7 in)
25 years83.7 mm (3.3 in)
50 years96.3 mm (3.8 in)
100 years109.7 mm (4.3 in)Longer than the 53 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 53 years of values from 1923 to 1983.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 102.1 mm (4.0 in) in 1937; 91.7 mm (3.6 in) in 1975; 88.9 mm (3.5 in) in 1951.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Download the Data

  • Data for Cardston standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Cardston 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). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-17).