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

Adler Threshold Days by Year (RSM00037171)

10 fixed thresholds counted per year at Adler (RSM00037171): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Adler Thresholds

  • Adler: days with 10 mm (0.39 in) or more of precipitation in 45 years, most in 1988 with 66.
  • Adler: days with 25 mm (0.98 in) or more of precipitation in 45 years, most in 1970 with 20.
  • Adler: days with 50 mm (1.97 in) or more of precipitation in 39 years, most in 1972 with 6.
  • Adler: days with a maximum temperature at or above 30 C (86 F) in 5 years, most in 1969 with 15.
  • 10 fixed thresholds have at least one qualifying day at Adler.
5 years with a qualifying day
Days at or above 30 C (86 F) per year at Adler Days per year at Adler with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 15 in 1969. 051015201969: 151970: 41988: 41990: 32025: 2019691970198819902025
Days per year at Adler with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 15 in 1969.
Days at or above 30 C (86 F) per year at Adler
YearDaysDecade average
19691515
197044
198844
199033
20252020
First to last qualifying date each year at Adler For each year, a bar from the first to the last day at Adler meeting 30 C (86 F). 1969: 4 June 1969 to 29 August 19691970: 9 July 1970 to 12 August 19701988: 17 May 1988 to 18 September 19881990: 31 May 1990 to 4 September 19902025: 26 May 2025 to 23 August 202519691970198819902025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Adler meeting 30 C (86 F).
First to last qualifying date each year at Adler
YearFirst dateLast date
19691969-06-041969-08-29
19701970-07-091970-08-12
19881988-05-171988-09-18
19901990-05-311990-09-04
20252025-05-262025-08-23

Every Fixed Threshold

Fixed thresholds at Adler
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days515196920
35 C (95 F): Days1119691
90 F (32.2 C): Days4919694
0 C (32 F): Frost days (min10n/a14
20 C (68 F): Tropical nights (min10n/a2
10 mm (0.39 in): Days with 10 mm or more rain4566198819
25 mm (0.98 in): Days with 25 mm or more rain4520197011
50 mm (1.97 in): Days with 50 mm or more rain39619722
100 mm (3.94 in): Days with 100 mm or more rain40n/a1
200 mm (7.87 in): Days with 200 mm or more rain10n/a1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1969.

Download the Data

  • Data for Adler 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).