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

Lethbridge Threshold Days by Year (CA003033879)

15 fixed thresholds counted per year at Lethbridge (CA003033879): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Lethbridge Thresholds

  • Lethbridge: days with 10 mm (0.39 in) or more of precipitation in 17 years, most in 1916 with 18.
  • Lethbridge: days with 10 cm (3.9 in) or more of snowfall in 16 years, most in 1903 with 3.
  • Lethbridge: days with a maximum temperature at or above 30 C (86 F) in 10 years, most in 1910 with 33.
  • Lethbridge: days with a maximum temperature at or above 90 F (32.2 C) in 10 years, most in 1910 with 17.
  • 15 fixed thresholds have at least one qualifying day at Lethbridge.
10 years with a qualifying day
Days at or above 30 C (86 F) per year at Lethbridge Days per year at Lethbridge with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 33 in 1910. 0102030401902: 101903: 91904: 281905: 281906: 291907: 101908: 291909: 241910: 331911: 101902190319041905190619071908190919101911
Days per year at Lethbridge with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 33 in 1910.
Days at or above 30 C (86 F) per year at Lethbridge
YearDaysDecade average
19021020.9
1903920.9
19042820.9
19052820.9
19062920.9
19071020.9
19082920.9
19092420.9
19103321.5
19111021.5
First to last qualifying date each year at Lethbridge For each year, a bar from the first to the last day at Lethbridge meeting 30 C (86 F). 1902: 14 May 1902 to 27 August 19021903: 18 June 1903 to 20 August 19031904: 16 June 1904 to 2 October 19041905: 1 June 1905 to 23 September 19051906: 23 April 1906 to 18 August 19061907: 27 June 1907 to 25 August 19071908: 8 May 1908 to 14 September 19081909: 2 June 1909 to 29 September 19091910: 20 April 1910 to 21 August 19101911: 6 May 1911 to 20 August 191119021904190619081910JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Lethbridge meeting 30 C (86 F).
First to last qualifying date each year at Lethbridge
YearFirst dateLast date
19021902-05-141902-08-27
19031903-06-181903-08-20
19041904-06-161904-10-02
19051905-06-011905-09-23
19061906-04-231906-08-18
19071907-06-271907-08-25
19081908-05-081908-09-14
19091909-06-021909-09-29
19101910-04-201910-08-21
19111911-05-061911-08-20

Every Fixed Threshold

Fixed thresholds at Lethbridge
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days1033191010
35 C (95 F): Days5419104
90 F (32.2 C): Days101719102
100 F (37.8 C): Days2219102
0 C (32 F): Ice days (max1058190456
0 C (32 F): Frost days (min102061909185
-10 C (14 F): Days with min1080190479
-20 C (-4 F): Days with min1047190944
-30 C (-22 F): Days with min1014190712
-40 C (-40 F): Days with min2319051
10 mm (0.39 in): Days with 10 mm or more rain1718191611
25 mm (0.98 in): Days with 25 mm or more rain10819027
50 mm (1.97 in): Days with 50 mm or more rain4319023
10 cm (3.9 in): Days with 10 cm or more snowfall16319032
25 cm (9.8 in): Days with 25 cm or more snowfall3119031

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1902.

Download the Data

  • Data for Lethbridge 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).