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Built 2026-10-19 (19 October 2026)

Amasa 1W Threshold Days by Year (USC00200197)

18 fixed thresholds counted per year at Amasa 1W (USC00200197): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Amasa 1W Thresholds

  • Amasa 1W: days with a maximum temperature at or above 30 C (86 F) in 20 years, most in 2021 with 23.
  • Amasa 1W: days with a maximum temperature at or below 0 C (32 F) in 20 years, most in 2018 with 118.
  • Amasa 1W: days with a maximum temperature at or above 90 F (32.2 C) in 19 years, most in 2021 with 9.
  • Amasa 1W: nights with a minimum temperature at or below 0 C (32 F) in 19 years, most in 2018 with 225.
  • 18 fixed thresholds have at least one qualifying day at Amasa 1W.
20 years with a qualifying day
Days at or above 30 C (86 F) per year at Amasa 1W Days per year at Amasa 1W with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 23 in 2021. 01020301996: 31997: 51998: 91999: 122006: 142009: 52010: 142012: 202015: 102016: 182017: 112018: 172019: 192020: 192021: 232022: 142023: 172024: 132025: 152026: 231996199820062010201520172019202120232025
Days per year at Amasa 1W with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 23 in 2021.
Days at or above 30 C (86 F) per year at Amasa 1W
YearDaysDecade average
199637.3
199757.3
199897.3
1999127.3
2006149.5
200959.5
20101415.6
20122015.6
20151015.6
20161815.6
20171115.6
20181715.6
20191915.6
20201917.7
20212317.7
20221417.7
20231717.7
20241317.7
20251517.7
20262317.7
First to last qualifying date each year at Amasa 1W For each year, a bar from the first to the last day at Amasa 1W meeting 30 C (86 F). 1996: 28 June 1996 to 30 June 19961997: 24 June 1997 to 3 August 19971998: 19 May 1998 to 12 September 19981999: 30 May 1999 to 5 September 19992006: 29 May 2006 to 30 July 20062009: 21 May 2009 to 16 August 20092010: 24 May 2010 to 31 August 20102012: 19 May 2012 to 24 July 20122015: 19 July 2015 to 2 September 20152016: 7 May 2016 to 30 August 20162017: 11 June 2017 to 25 September 20172018: 27 May 2018 to 15 August 20182019: 1 June 2019 to 29 July 20192020: 3 June 2020 to 13 August 20202021: 5 June 2021 to 27 August 20212022: 10 May 2022 to 3 September 20222023: 31 May 2023 to 3 October 20232024: 19 June 2024 to 28 September 20242025: 13 May 2025 to 16 August 20252026: 26 May 2026 to 15 August 20261996199920102016201920222025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Amasa 1W meeting 30 C (86 F).
First to last qualifying date each year at Amasa 1W
YearFirst dateLast date
19961996-06-281996-06-30
19971997-06-241997-08-03
19981998-05-191998-09-12
19991999-05-301999-09-05
20062006-05-292006-07-30
20092009-05-212009-08-16
20102010-05-242010-08-31
20122012-05-192012-07-24
20152015-07-192015-09-02
20162016-05-072016-08-30
20172017-06-112017-09-25
20182018-05-272018-08-15
20192019-06-012019-07-29
20202020-06-032020-08-13
20212021-06-052021-08-27
20222022-05-102022-09-03
20232023-05-312023-10-03
20242024-06-192024-09-28
20252025-05-132025-08-16
20262026-05-262026-08-15

Every Fixed Threshold

Fixed thresholds at Amasa 1W
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2023202123
35 C (95 F): Days5220063
90 F (32.2 C): Days19920216
100 F (37.8 C): Days10n/a1
0 C (32 F): Ice days (max20118201857
0 C (32 F): Frost days (min192252018114
-10 C (14 F): Days with min19105201952
-20 C (-4 F): Days with min1948199618
-30 C (-22 F): Days with min172019962
-40 C (-40 F): Days with min4519963
20 C (68 F): Tropical nights (min11420251
25 C (77 F): Days with min1120251
10 mm (0.39 in): Days with 10 mm or more rain1737201713
25 mm (0.98 in): Days with 25 mm or more rain16920065
50 mm (1.97 in): Days with 50 mm or more rain6220101
100 mm (3.94 in): Days with 100 mm or more rain1120251
10 cm (3.9 in): Days with 10 cm or more snowfall161220194
25 cm (9.8 in): Days with 25 cm or more snowfall6320061

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1996.

Download the Data

  • Data for Amasa 1W 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).