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Built 2026-10-19 (19 October 2026)

Richlands Threshold Days by Year (USC00447174)

14 fixed thresholds counted per year at Richlands (USC00447174): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Richlands Thresholds

  • Richlands: days with 10 mm (0.39 in) or more of precipitation in 35 years, most in 2018 with 51.
  • Richlands: days with 25 mm (0.98 in) or more of precipitation in 35 years, most in 1991 with 14.
  • Richlands: days with a maximum temperature at or above 30 C (86 F) in 33 years, most in 2010 with 62.
  • Richlands: days with a maximum temperature at or below 0 C (32 F) in 33 years, most in 2010 with 36.
  • 14 fixed thresholds have at least one qualifying day at Richlands.
33 years with a qualifying day
Days at or above 30 C (86 F) per year at Richlands Days per year at Richlands with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 62 in 2010. 0204060801991: 221992: 91993: 481994: 351997: 121998: 291999: 342000: 112001: 102003: 42004: 32005: 302006: 182007: 492008: 262009: 172010: 622011: 492012: 342013: 112014: 182015: 282016: 462017: 202018: 362019: 502020: 282021: 342022: 272023: 192024: 442025: 392026: 38199119972001200620102014201820222026
Days per year at Richlands with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 62 in 2010.
Days at or above 30 C (86 F) per year at Richlands
YearDaysDecade average
19912227
1992927
19934827
19943527
19971227
19982927
19993427
20001118.7
20011018.7
2003418.7
2004318.7
20053018.7
20061818.7
20074918.7
20082618.7
20091718.7
20106235.4
20114935.4
20123435.4
20131135.4
20141835.4
20152835.4
20164635.4
20172035.4
20183635.4
20195035.4
20202832.7
20213432.7
20222732.7
20231932.7
20244432.7
20253932.7
20263832.7
First to last qualifying date each year at Richlands For each year, a bar from the first to the last day at Richlands meeting 30 C (86 F). 1991: 26 May 1991 to 19 September 19911992: 10 July 1992 to 12 August 19921993: 9 June 1993 to 15 September 19931994: 6 June 1994 to 17 September 19941997: 26 June 1997 to 3 September 19971998: 16 May 1998 to 27 September 19981999: 7 June 1999 to 9 September 19992000: 11 June 2000 to 11 September 20002001: 15 June 2001 to 10 August 20012003: 26 June 2003 to 28 August 20032004: 11 July 2004 to 23 September 20042005: 7 June 2005 to 25 September 20052006: 29 May 2006 to 29 August 20062007: 8 June 2007 to 9 October 20072008: 6 June 2008 to 15 September 20082009: 23 May 2009 to 28 August 20092010: 3 April 2010 to 24 September 20102011: 26 May 2011 to 4 September 20112012: 4 May 2012 to 8 September 20122013: 31 May 2013 to 11 September 20132014: 14 May 2014 to 4 September 20142015: 12 June 2015 to 8 September 20152016: 12 June 2016 to 18 September 20162017: 29 April 2017 to 25 September 20172018: 15 May 2018 to 21 September 20182019: 25 June 2019 to 4 October 20192020: 25 May 2020 to 27 August 20202021: 26 May 2021 to 30 August 20212022: 21 May 2022 to 22 September 20222023: 7 July 2023 to 7 September 20232024: 3 May 2024 to 23 September 20242025: 14 June 2025 to 21 August 20252026: 18 May 2026 to 18 September 20261991199820042009201420192024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Richlands meeting 30 C (86 F).
First to last qualifying date each year at Richlands
YearFirst dateLast date
19911991-05-261991-09-19
19921992-07-101992-08-12
19931993-06-091993-09-15
19941994-06-061994-09-17
19971997-06-261997-09-03
19981998-05-161998-09-27
19991999-06-071999-09-09
20002000-06-112000-09-11
20012001-06-152001-08-10
20032003-06-262003-08-28
20042004-07-112004-09-23
20052005-06-072005-09-25
20062006-05-292006-08-29
20072007-06-082007-10-09
20082008-06-062008-09-15
20092009-05-232009-08-28
20102010-04-032010-09-24
20112011-05-262011-09-04
20122012-05-042012-09-08
20132013-05-312013-09-11
20142014-05-142014-09-04
20152015-06-122015-09-08
20162016-06-122016-09-18
20172017-04-292017-09-25
20182018-05-152018-09-21
20192019-06-252019-10-04
20202020-05-252020-08-27
20212021-05-262021-08-30
20222022-05-212022-09-22
20232023-07-072023-09-07
20242024-05-032024-09-23
20252025-06-142025-08-21
20262026-05-182026-09-18

Every Fixed Threshold

Fixed thresholds at Richlands
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3362201038
35 C (95 F): Days2220122
90 F (32.2 C): Days251920108
0 C (32 F): Ice days (max3336201016
0 C (32 F): Frost days (min33145201074
-10 C (14 F): Days with min3328200015
-20 C (-4 F): Days with min7720142
20 C (68 F): Tropical nights (min251420256
10 mm (0.39 in): Days with 10 mm or more rain3551201835
25 mm (0.98 in): Days with 25 mm or more rain3514199110
50 mm (1.97 in): Days with 50 mm or more rain20319981
100 mm (3.94 in): Days with 100 mm or more rain1120041
10 cm (3.9 in): Days with 10 cm or more snowfall19320101
25 cm (9.8 in): Days with 25 cm or more snowfall3119931

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1991.

Download the Data

  • Data for Richlands 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).