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Built 2026-10-19 (19 October 2026)

Holyrood Gen STN Threshold Days by Year (CA008402309)

11 fixed thresholds counted per year at Holyrood Gen STN (CA008402309): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Holyrood Gen STN Thresholds

  • Holyrood Gen STN: nights with a minimum temperature at or below 0 C (32 F) in 11 years, most in 1972 with 176.
  • Holyrood Gen STN: nights with a minimum temperature at or below -10 C (14 F) in 11 years, most in 1972 with 53.
  • Holyrood Gen STN: days with a maximum temperature at or below 0 C (32 F) in 10 years, most in 1972 with 65.
  • Holyrood Gen STN: days with 10 mm (0.39 in) or more of precipitation in 10 years, most in 1980 with 49.
  • 11 fixed thresholds have at least one qualifying day at Holyrood Gen STN.
3 years with a qualifying day
Days at or above 30 C (86 F) per year at Holyrood Gen STN Days per year at Holyrood Gen STN with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 1 in 1979. 001111979: 11981: 11982: 1197919811982
Days per year at Holyrood Gen STN with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 1 in 1979.
Days at or above 30 C (86 F) per year at Holyrood Gen STN
YearDaysDecade average
197911
198111
198211
First to last qualifying date each year at Holyrood Gen STN For each year, a bar from the first to the last day at Holyrood Gen STN meeting 30 C (86 F). 1979: 4 August 1979 to 4 August 19791981: 4 July 1981 to 4 July 19811982: 9 July 1982 to 9 July 1982197919811982JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Holyrood Gen STN meeting 30 C (86 F).
First to last qualifying date each year at Holyrood Gen STN
YearFirst dateLast date
19791979-08-041979-08-04
19811981-07-041981-07-04
19821982-07-091982-07-09

Every Fixed Threshold

Fixed thresholds at Holyrood Gen STN
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3119791
0 C (32 F): Ice days (max1065197217
0 C (32 F): Frost days (min111761972154
-10 C (14 F): Days with min1153197241
-20 C (-4 F): Days with min5419753
20 C (68 F): Tropical nights (min3219752
10 mm (0.39 in): Days with 10 mm or more rain1049198040
25 mm (0.98 in): Days with 25 mm or more rain101019816
50 mm (1.97 in): Days with 50 mm or more rain5219741
10 cm (3.9 in): Days with 10 cm or more snowfall91119724
25 cm (9.8 in): Days with 25 cm or more snowfall1119821

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1979.

Download the Data

  • Data for Holyrood Gen STN 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).