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Built 2026-10-17 (17 October 2026)

Parsons Wtp Threshold Days by Year

17 fixed thresholds counted per year at Parsons Wtp (USC00407015): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Parsons Wtp Thresholds

  • Parsons Wtp: days with 10 mm (0.39 in) or more of precipitation in 35 years, most in 2020 with 62.
  • Parsons Wtp: days with 25 mm (0.98 in) or more of precipitation in 35 years, most in 2018 with 27.
  • Parsons Wtp: days with 50 mm (1.97 in) or more of precipitation in 33 years, most in 2023 with 9.
  • Parsons Wtp: days with a maximum temperature at or above 30 C (86 F) in 25 years, most in 2010 with 131.
  • 17 fixed thresholds have at least one qualifying day at Parsons Wtp.
25 years with a qualifying day
Days at or above 30 C (86 F) per year at Parsons Wtp Days per year at Parsons Wtp with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 131 in 2010. 0501001501998: 1191999: 992000: 1072001: 852004: 792005: 1112006: 992007: 1302008: 1012009: 862010: 1312011: 1102012: 1062013: 912014: 852015: 942016: 1312017: 962018: 1272019: 1212020: 972021: 792022: 1132023: 1022026: 83199820012006200920122015201820212026
Days per year at Parsons Wtp with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 131 in 2010.
Days at or above 30 C (86 F) per year at Parsons Wtp
YearDaysDecade average
1998119109
199999109
200010799.8
20018599.8
20047999.8
200511199.8
20069999.8
200713099.8
200810199.8
20098699.8
2010131109.2
2011110109.2
2012106109.2
201391109.2
201485109.2
201594109.2
2016131109.2
201796109.2
2018127109.2
2019121109.2
20209794.8
20217994.8
202211394.8
202310294.8
20268394.8
First to last qualifying date each year at Parsons Wtp For each year, a bar from the first to the last day at Parsons Wtp meeting 30 C (86 F). 1998: 31 March 1998 to 31 October 19981999: 4 April 1999 to 4 October 19992000: 7 May 2000 to 1 November 20002001: 7 April 2001 to 24 September 20012004: 7 May 2004 to 5 October 20042005: 11 May 2005 to 9 November 20052006: 18 April 2006 to 19 October 20062007: 25 March 2007 to 19 October 20072008: 24 April 2008 to 30 September 20082009: 24 April 2009 to 9 October 20092010: 6 April 2010 to 19 October 20102011: 9 April 2011 to 18 October 20112012: 21 March 2012 to 28 September 20122013: 11 April 2013 to 6 October 20132014: 5 May 2014 to 27 October 20142015: 9 April 2015 to 10 October 20152016: 16 March 2016 to 2 November 20162017: 14 April 2017 to 15 October 20172018: 2 May 2018 to 10 October 20182019: 11 April 2019 to 6 October 20192020: 28 March 2020 to 22 October 20202021: 23 May 2021 to 10 October 20212022: 3 May 2022 to 26 September 20222023: 5 April 2023 to 5 October 20232026: 22 March 2026 to 31 August 20261998200420082012201620202026JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Parsons Wtp meeting 30 C (86 F).
First to last qualifying date each year at Parsons Wtp
YearFirst dateLast date
19981998-03-311998-10-31
19991999-04-041999-10-04
20002000-05-072000-11-01
20012001-04-072001-09-24
20042004-05-072004-10-05
20052005-05-112005-11-09
20062006-04-182006-10-19
20072007-03-252007-10-19
20082008-04-242008-09-30
20092009-04-242009-10-09
20102010-04-062010-10-19
20112011-04-092011-10-18
20122012-03-212012-09-28
20132013-04-112013-10-06
20142014-05-052014-10-27
20152015-04-092015-10-10
20162016-03-162016-11-02
20172017-04-142017-10-15
20182018-05-022018-10-10
20192019-04-112019-10-06
20202020-03-282020-10-22
20212021-05-232021-10-10
20222022-05-032022-09-26
20232023-04-052023-10-05
20262026-03-222026-08-31

Every Fixed Threshold

Fixed thresholds at Parsons Wtp
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days25131201083
35 C (95 F): Days2548201015
40 C (104 F): Days4520072
90 F (32.2 C): Days2594201050
100 F (37.8 C): Days101820071
0 C (32 F): Ice days (max231220145
0 C (32 F): Frost days (min25111201438
-10 C (14 F): Days with min211520007
20 C (68 F): Tropical nights (min2577201858
25 C (77 F): Days with min8119983
10 mm (0.39 in): Days with 10 mm or more rain3562202023
25 mm (0.98 in): Days with 25 mm or more rain3527201811
50 mm (1.97 in): Days with 50 mm or more rain33920231
100 mm (3.94 in): Days with 100 mm or more rain16220171
200 mm (7.87 in): Days with 200 mm or more rain1120101
10 cm (3.9 in): Days with 10 cm or more snowfall7119711
25 cm (9.8 in): Days with 25 cm or more snowfall1120101

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1998.

Download the Data

  • Data for Parsons Wtp 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-12).