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

Isabella 1 W Threshold Days by Year (USC00214068)

16 fixed thresholds counted per year at Isabella 1 W (USC00214068): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Isabella 1 W Thresholds

  • Isabella 1 W: days with 10 mm (0.39 in) or more of precipitation in 19 years, most in 1968 with 34.
  • Isabella 1 W: days with 25 mm (0.98 in) or more of precipitation in 19 years, most in 1968 with 7.
  • Isabella 1 W: days with 10 cm (3.9 in) or more of snowfall in 18 years, most in 1969 with 10.
  • Isabella 1 W: nights with a minimum temperature at or below 0 C (32 F) in 11 years, most in 1967 with 216.
  • 16 fixed thresholds have at least one qualifying day at Isabella 1 W.
9 years with a qualifying day
Days at or above 30 C (86 F) per year at Isabella 1 W Days per year at Isabella 1 W with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 17 in 1970. 051015201958: 51959: 91960: 31961: 131966: 91967: 51968: 41969: 81970: 17195819591960196119661967196819691970
Days per year at Isabella 1 W with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 17 in 1970.
Days at or above 30 C (86 F) per year at Isabella 1 W
YearDaysDecade average
195857
195997
196037
1961137
196697
196757
196847
196987
19701717
First to last qualifying date each year at Isabella 1 W For each year, a bar from the first to the last day at Isabella 1 W meeting 30 C (86 F). 1958: 23 July 1958 to 10 August 19581959: 4 June 1959 to 19 August 19591960: 8 July 1960 to 3 September 19601961: 28 June 1961 to 2 September 19611966: 29 June 1966 to 27 August 19661967: 18 June 1967 to 23 July 19671968: 4 June 1968 to 17 July 19681969: 28 May 1969 to 18 August 19691970: 7 June 1970 to 26 August 197019581960196619681970JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Isabella 1 W meeting 30 C (86 F).
First to last qualifying date each year at Isabella 1 W
YearFirst dateLast date
19581958-07-231958-08-10
19591959-06-041959-08-19
19601960-07-081960-09-03
19611961-06-281961-09-02
19661966-06-291966-08-27
19671967-06-181967-07-23
19681968-06-041968-07-17
19691969-05-281969-08-18
19701970-06-071970-08-26

Every Fixed Threshold

Fixed thresholds at Isabella 1 W
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days917197017
90 F (32.2 C): Days5619706
0 C (32 F): Ice days (max91181959114
0 C (32 F): Frost days (min112161967182
-10 C (14 F): Days with min111221970105
-20 C (-4 F): Days with min1155196762
-30 C (-22 F): Days with min1115196818
-40 C (-40 F): Days with min2119661
20 C (68 F): Tropical nights (min2119591
10 mm (0.39 in): Days with 10 mm or more rain1934196821
25 mm (0.98 in): Days with 25 mm or more rain19719682
50 mm (1.97 in): Days with 50 mm or more rain8119582
100 mm (3.94 in): Days with 100 mm or more rain10n/a1
10 cm (3.9 in): Days with 10 cm or more snowfall181019696
25 cm (9.8 in): Days with 25 cm or more snowfall9319691
50 cm (19.7 in): Days with 50 cm or more snowfall2119661

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1958.

Download the Data

  • Data for Isabella 1 W 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).