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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Trafalgar Threshold Days by Year (CA008205900)

15 fixed thresholds counted per year at Trafalgar (CA008205900): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Trafalgar Thresholds

  • Trafalgar: days with 10 cm (3.9 in) or more of snowfall in 45 years, most in 1956 with 19.
  • Trafalgar: days with 10 mm (0.39 in) or more of precipitation in 40 years, most in 1979 with 63.
  • Trafalgar: days with 25 mm (0.98 in) or more of precipitation in 40 years, most in 1972 with 20.
  • Trafalgar: days with 50 mm (1.97 in) or more of precipitation in 36 years, most in 1924 with 6.
  • 15 fixed thresholds have at least one qualifying day at Trafalgar.
8 years with a qualifying day
Days at or above 30 C (86 F) per year at Trafalgar Days per year at Trafalgar with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 5 in 1969. 02461967: 31968: 31969: 51970: 41972: 31973: 11977: 41979: 219671968196919701972197319771979
Days per year at Trafalgar with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 5 in 1969.
Days at or above 30 C (86 F) per year at Trafalgar
YearDaysDecade average
196733.7
196833.7
196953.7
197042.8
197232.8
197312.8
197742.8
197922.8
First to last qualifying date each year at Trafalgar For each year, a bar from the first to the last day at Trafalgar meeting 30 C (86 F). 1967: 4 June 1967 to 6 June 19671968: 2 July 1968 to 16 July 19681969: 14 June 1969 to 2 September 19691970: 25 July 1970 to 29 July 19701972: 29 May 1972 to 13 July 19721973: 9 July 1973 to 9 July 19731977: 22 May 1977 to 21 July 19771979: 16 June 1979 to 10 July 197919671968196919701972197319771979JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Trafalgar meeting 30 C (86 F).
First to last qualifying date each year at Trafalgar
YearFirst dateLast date
19671967-06-041967-06-06
19681968-07-021968-07-16
19691969-06-141969-09-02
19701970-07-251970-07-29
19721972-05-291972-07-13
19731973-07-091973-07-09
19771977-05-221977-07-21
19791979-06-161979-07-10

Every Fixed Threshold

Fixed thresholds at Trafalgar
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days8519692
90 F (32.2 C): Days1219772
0 C (32 F): Ice days (max1387196557
0 C (32 F): Frost days (min122221965158
-10 C (14 F): Days with min1289196756
-20 C (-4 F): Days with min1231196817
-30 C (-22 F): Days with min7419661
20 C (68 F): Tropical nights (min1319793
10 mm (0.39 in): Days with 10 mm or more rain4063197944
25 mm (0.98 in): Days with 25 mm or more rain4020197218
50 mm (1.97 in): Days with 50 mm or more rain36619244
100 mm (3.94 in): Days with 100 mm or more rain2119291
10 cm (3.9 in): Days with 10 cm or more snowfall451919567
25 cm (9.8 in): Days with 25 cm or more snowfall32319262
50 cm (19.7 in): Days with 50 cm or more snowfall1119341

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1967.

Download the Data

  • Data for Trafalgar 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 (2025-12-31).