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

Gwynne Threshold Days by Year (CA003012990)

12 fixed thresholds counted per year at Gwynne (CA003012990): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Gwynne Thresholds

  • Gwynne: days with a maximum temperature at or below 0 C (32 F) in 8 years, most in 1982 with 130.
  • Gwynne: nights with a minimum temperature at or below 0 C (32 F) in 8 years, most in 1979 with 221.
  • Gwynne: nights with a minimum temperature at or below -10 C (14 F) in 8 years, most in 1982 with 137.
  • Gwynne: nights with a minimum temperature at or below -20 C (-4 F) in 8 years, most in 1982 with 70.
  • 12 fixed thresholds have at least one qualifying day at Gwynne.
7 years with a qualifying day
Days at or above 30 C (86 F) per year at Gwynne Days per year at Gwynne with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 10 in 1981. 0358101976: 11977: 41978: 81979: 41981: 101982: 31983: 11976197719781979198119821983
Days per year at Gwynne with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 10 in 1981.
Days at or above 30 C (86 F) per year at Gwynne
YearDaysDecade average
197614.3
197744.3
197884.3
197944.3
1981104.7
198234.7
198314.7
First to last qualifying date each year at Gwynne For each year, a bar from the first to the last day at Gwynne meeting 30 C (86 F). 1976: 14 August 1976 to 14 August 19761977: 25 April 1977 to 21 July 19771978: 4 June 1978 to 10 August 19781979: 29 June 1979 to 19 July 19791981: 3 July 1981 to 18 September 19811982: 20 June 1982 to 30 July 19821983: 10 August 1983 to 10 August 19831976197719781979198119821983JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Gwynne meeting 30 C (86 F).
First to last qualifying date each year at Gwynne
YearFirst dateLast date
19761976-08-141976-08-14
19771977-04-251977-07-21
19781978-06-041978-08-10
19791979-06-291979-07-19
19811981-07-031981-09-18
19821982-06-201982-07-30
19831983-08-101983-08-10

Every Fixed Threshold

Fixed thresholds at Gwynne
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days71019811
90 F (32.2 C): Days3419781
0 C (32 F): Ice days (max81301982112
0 C (32 F): Frost days (min82211979210
-10 C (14 F): Days with min81371982101
-20 C (-4 F): Days with min870198238
-30 C (-22 F): Days with min82219828
-40 C (-40 F): Days with min4219771
10 mm (0.39 in): Days with 10 mm or more rain819197912
25 mm (0.98 in): Days with 25 mm or more rain7419823
50 mm (1.97 in): Days with 50 mm or more rain2119781
10 cm (3.9 in): Days with 10 cm or more snowfall7419822

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1976.

Download the Data

  • Data for Gwynne 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).