Daily records
Page built 2026-10-19
Data as of 2026-10-17
Search
Built 2026-10-19 (19 October 2026)

Trough Threshold Days by Year (USS0020B25S)

11 fixed thresholds counted per year at Trough (USS0020B25S): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Trough Thresholds

  • Trough: days with 10 mm (0.39 in) or more of precipitation in 48 years, most in 1998 with 45.
  • Trough: days with 25 mm (0.98 in) or more of precipitation in 45 years, most in 1983 with 9.
  • Trough: days with a maximum temperature at or below 0 C (32 F) in 37 years, most in 2006 with 94.
  • Trough: nights with a minimum temperature at or below 0 C (32 F) in 37 years, most in 2017 with 208.
  • 11 fixed thresholds have at least one qualifying day at Trough.
10 years with a qualifying day
Days at or above 30 C (86 F) per year at Trough Days per year at Trough with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 5 in 2021. 02461994: 22002: 12006: 12008: 22015: 22018: 22021: 52022: 32023: 22024: 21994200220062008201520182021202220232024
Days per year at Trough with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 5 in 2021.
Days at or above 30 C (86 F) per year at Trough
YearDaysDecade average
199422
200211.3
200611.3
200821.3
201522
201822
202153
202233
202323
202423
First to last qualifying date each year at Trough For each year, a bar from the first to the last day at Trough meeting 30 C (86 F). 1994: 22 July 1994 to 24 July 19942002: 12 July 2002 to 12 July 20022006: 23 July 2006 to 23 July 20062008: 16 August 2008 to 17 August 20082015: 28 June 2015 to 31 July 20152018: 9 August 2018 to 10 August 20182021: 28 June 2021 to 11 August 20212022: 28 July 2022 to 31 July 20222023: 15 August 2023 to 16 August 20232024: 9 July 2024 to 2 August 202419942006201520212023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Trough meeting 30 C (86 F).
First to last qualifying date each year at Trough
YearFirst dateLast date
19941994-07-221994-07-24
20022002-07-122002-07-12
20062006-07-232006-07-23
20082008-08-162008-08-17
20152015-06-282015-07-31
20182018-08-092018-08-10
20212021-06-282021-08-11
20222022-07-282022-07-31
20232023-08-152023-08-16
20242024-07-092024-08-02

Every Fixed Threshold

Fixed thresholds at Trough
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days10520212
90 F (32.2 C): Days1220212
0 C (32 F): Ice days (max3794200626
0 C (32 F): Frost days (min372082017100
-10 C (14 F): Days with min373720197
-20 C (-4 F): Days with min19519902
20 C (68 F): Tropical nights (min14320221
10 mm (0.39 in): Days with 10 mm or more rain4845199812
25 mm (0.98 in): Days with 25 mm or more rain45919834
50 mm (1.97 in): Days with 50 mm or more rain11220221
100 mm (3.94 in): Days with 100 mm or more rain1120051

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1994.

Download the Data

  • Data for Trough 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).