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Built 2026-10-19 (19 October 2026)

Weldon Spring NWS Threshold Days by Year (USC00238805)

18 fixed thresholds counted per year at Weldon Spring NWS (USC00238805): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Weldon Spring NWS Thresholds

  • Weldon Spring NWS: days with 10 mm (0.39 in) or more of precipitation in 52 years, most in 2019 with 47.
  • Weldon Spring NWS: days with 25 mm (0.98 in) or more of precipitation in 52 years, most in 2008 with 21.
  • Weldon Spring NWS: days with a maximum temperature at or above 30 C (86 F) in 46 years, most in 2012 with 94.
  • Weldon Spring NWS: days with a maximum temperature at or above 90 F (32.2 C) in 46 years, most in 2012 with 67.
  • 18 fixed thresholds have at least one qualifying day at Weldon Spring NWS.
46 years with a qualifying day
Days at or above 30 C (86 F) per year at Weldon Spring NWS Days per year at Weldon Spring NWS with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 94 in 2012. 02550751001958: 521959: 871960: 701961: 691962: 811963: 891964: 781965: 701966: 691967: 501969: 571970: 571971: 661972: 721976: 621977: 731992: 431997: 661998: 751999: 392000: 692002: 802003: 472004: 332005: 782006: 732007: 802008: 402009: 362010: 892011: 832012: 942013: 662014: 552015: 562016: 702017: 672018: 902019: 702020: 652021: 772022: 782023: 732024: 692025: 842026: 921958196319691977200020062011201620212026
Days per year at Weldon Spring NWS with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 94 in 2012.
Days at or above 30 C (86 F) per year at Weldon Spring NWS
YearDaysDecade average
19585269.5
19598769.5
19607070.3
19616970.3
19628170.3
19638970.3
19647870.3
19657070.3
19666970.3
19675070.3
19695770.3
19705766
19716666
19727266
19766266
19777366
19924355.8
19976655.8
19987555.8
19993955.8
20006959.6
20028059.6
20034759.6
20043359.6
20057859.6
20067359.6
20078059.6
20084059.6
20093659.6
20108974
20118374
20129474
20136674
20145574
20155674
20167074
20176774
20189074
20197074
20206576.9
20217776.9
20227876.9
20237376.9
20246976.9
20258476.9
20269276.9
First to last qualifying date each year at Weldon Spring NWS For each year, a bar from the first to the last day at Weldon Spring NWS meeting 30 C (86 F). 1958: 23 May 1958 to 26 September 19581959: 1 May 1959 to 28 September 19591960: 23 April 1960 to 24 September 19601961: 14 May 1961 to 24 September 19611962: 22 April 1962 to 15 October 19621963: 30 March 1963 to 27 October 19631964: 5 May 1964 to 18 October 19641965: 9 April 1965 to 20 September 19651966: 22 March 1966 to 10 October 19661967: 6 April 1967 to 5 October 19671969: 29 May 1969 to 4 October 19691970: 29 April 1970 to 22 September 19701971: 13 April 1971 to 3 October 19711972: 13 April 1972 to 21 September 19721976: 24 April 1976 to 13 October 19761977: 17 April 1977 to 19 September 19771992: 2 May 1992 to 15 October 19921997: 21 March 1997 to 7 October 19971998: 13 May 1998 to 29 September 19981999: 4 June 1999 to 27 September 19992000: 19 April 2000 to 4 October 20002002: 16 April 2002 to 15 September 20022003: 15 April 2003 to 21 October 20032004: 17 April 2004 to 5 September 20042005: 11 May 2005 to 5 October 20052006: 14 April 2006 to 5 October 20062007: 30 April 2007 to 9 October 20072008: 31 May 2008 to 3 September 20082009: 24 April 2009 to 28 August 20092010: 1 April 2010 to 21 September 20102011: 4 April 2011 to 14 September 20112012: 2 April 2012 to 14 September 20122013: 18 April 2013 to 5 October 20132014: 6 May 2014 to 2 October 20142015: 8 June 2015 to 19 September 20152016: 8 May 2016 to 18 October 20162017: 20 April 2017 to 15 October 20172018: 13 April 2018 to 6 October 20182019: 23 April 2019 to 3 October 20192020: 9 April 2020 to 8 October 20202021: 24 May 2021 to 11 October 20212022: 23 April 2022 to 22 September 20222023: 8 May 2023 to 4 October 20232024: 15 April 2024 to 13 October 20242025: 16 May 2025 to 18 October 20252026: 11 March 2026 to 14 October 202619581964197119982005201120172023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Weldon Spring NWS meeting 30 C (86 F).
First to last qualifying date each year at Weldon Spring NWS
YearFirst dateLast date
19581958-05-231958-09-26
19591959-05-011959-09-28
19601960-04-231960-09-24
19611961-05-141961-09-24
19621962-04-221962-10-15
19631963-03-301963-10-27
19641964-05-051964-10-18
19651965-04-091965-09-20
19661966-03-221966-10-10
19671967-04-061967-10-05
19691969-05-291969-10-04
19701970-04-291970-09-22
19711971-04-131971-10-03
19721972-04-131972-09-21
19761976-04-241976-10-13
19771977-04-171977-09-19
19921992-05-021992-10-15
19971997-03-211997-10-07
19981998-05-131998-09-29
19991999-06-041999-09-27
20002000-04-192000-10-04
20022002-04-162002-09-15
20032003-04-152003-10-21
20042004-04-172004-09-05
20052005-05-112005-10-05
20062006-04-142006-10-05
20072007-04-302007-10-09
20082008-05-312008-09-03
20092009-04-242009-08-28
20102010-04-012010-09-21
20112011-04-042011-09-14
20122012-04-022012-09-14
20132013-04-182013-10-05
20142014-05-062014-10-02
20152015-06-082015-09-19
20162016-05-082016-10-18
20172017-04-202017-10-15
20182018-04-132018-10-06
20192019-04-232019-10-03
20202020-04-092020-10-08
20212021-05-242021-10-11
20222022-04-232022-09-22
20232023-05-082023-10-04
20242024-04-152024-10-13
20252025-05-162025-10-18
20262026-03-112026-10-14

Every Fixed Threshold

Fixed thresholds at Weldon Spring NWS
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days4694201292
35 C (95 F): Days4337201216
40 C (104 F): Days6620126
90 F (32.2 C): Days4667201254
100 F (37.8 C): Days201820122
0 C (32 F): Ice days (max4648196316
0 C (32 F): Frost days (min46130201352
-10 C (14 F): Days with min4647196316
-20 C (-4 F): Days with min201319633
-30 C (-22 F): Days with min1119771
20 C (68 F): Tropical nights (min4657199859
25 C (77 F): Days with min17720236
10 mm (0.39 in): Days with 10 mm or more rain5247201931
25 mm (0.98 in): Days with 25 mm or more rain5221200812
50 mm (1.97 in): Days with 50 mm or more rain41620083
100 mm (3.94 in): Days with 100 mm or more rain10220001
10 cm (3.9 in): Days with 10 cm or more snowfall23619601
25 cm (9.8 in): Days with 25 cm or more snowfall2120251

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 Weldon Spring NWS 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).