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Built 2026-10-19 (19 October 2026)

Norfolk Rich Threshold Days by Year (USW00093773)

16 fixed thresholds counted per year at Norfolk Rich (USW00093773): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Norfolk Rich Thresholds

  • Norfolk Rich: days with a maximum temperature at or above 30 C (86 F) in 28 years, most in 2010 with 111.
  • Norfolk Rich: days with a maximum temperature at or above 90 F (32.2 C) in 28 years, most in 2010 with 83.
  • Norfolk Rich: nights with a minimum temperature at or below 0 C (32 F) in 28 years, most in 2010 with 94.
  • Norfolk Rich: nights with a minimum temperature at or above 20 C (68 F) in 28 years, most in 2018 with 98.
  • 16 fixed thresholds have at least one qualifying day at Norfolk Rich.
28 years with a qualifying day
Days at or above 30 C (86 F) per year at Norfolk Rich Days per year at Norfolk Rich with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 111 in 2010. 0501001501998: 941999: 712000: 622001: 662002: 892003: 522004: 632005: 822006: 722007: 942008: 902009: 742010: 1112011: 942012: 792013: 702014: 652015: 962016: 912017: 822018: 1052019: 1082020: 842021: 932022: 912023: 752024: 792025: 721998200120042007201020132016201920222025
Days per year at Norfolk Rich with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 111 in 2010.
Days at or above 30 C (86 F) per year at Norfolk Rich
YearDaysDecade average
19989482.5
19997182.5
20006274.4
20016674.4
20028974.4
20035274.4
20046374.4
20058274.4
20067274.4
20079474.4
20089074.4
20097474.4
201011190.1
20119490.1
20127990.1
20137090.1
20146590.1
20159690.1
20169190.1
20178290.1
201810590.1
201910890.1
20208482.3
20219382.3
20229182.3
20237582.3
20247982.3
20257282.3
First to last qualifying date each year at Norfolk Rich For each year, a bar from the first to the last day at Norfolk Rich meeting 30 C (86 F). 1998: 29 March 1998 to 1 October 19981999: 4 April 1999 to 8 September 19992000: 8 March 2000 to 4 October 20002001: 7 April 2001 to 23 September 20012002: 15 April 2002 to 10 November 20022003: 10 June 2003 to 4 September 20032004: 19 April 2004 to 22 September 20042005: 20 April 2005 to 6 October 20052006: 15 April 2006 to 24 September 20062007: 27 March 2007 to 9 October 20072008: 18 April 2008 to 16 October 20082009: 25 April 2009 to 24 September 20092010: 5 April 2010 to 27 October 20102011: 20 April 2011 to 15 September 20112012: 16 April 2012 to 27 September 20122013: 10 April 2013 to 6 October 20132014: 8 May 2014 to 11 September 20142015: 12 May 2015 to 30 September 20152016: 16 March 2016 to 19 October 20162017: 16 April 2017 to 10 October 20172018: 2 May 2018 to 10 October 20182019: 24 April 2019 to 3 October 20192020: 20 March 2020 to 13 September 20202021: 28 April 2021 to 16 October 20212022: 24 April 2022 to 25 September 20222023: 5 April 2023 to 28 October 20232024: 15 April 2024 to 29 September 20242025: 6 April 2025 to 25 September 20251998200220062010201420182022JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Norfolk Rich meeting 30 C (86 F).
First to last qualifying date each year at Norfolk Rich
YearFirst dateLast date
19981998-03-291998-10-01
19991999-04-041999-09-08
20002000-03-082000-10-04
20012001-04-072001-09-23
20022002-04-152002-11-10
20032003-06-102003-09-04
20042004-04-192004-09-22
20052005-04-202005-10-06
20062006-04-152006-09-24
20072007-03-272007-10-09
20082008-04-182008-10-16
20092009-04-252009-09-24
20102010-04-052010-10-27
20112011-04-202011-09-15
20122012-04-162012-09-27
20132013-04-102013-10-06
20142014-05-082014-09-11
20152015-05-122015-09-30
20162016-03-162016-10-19
20172017-04-162017-10-10
20182018-05-022018-10-10
20192019-04-242019-10-03
20202020-03-202020-09-13
20212021-04-282021-10-16
20222022-04-242022-09-25
20232023-04-052023-10-28
20242024-04-152024-09-29
20252025-04-062025-09-25

Every Fixed Threshold

Fixed thresholds at Norfolk Rich
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days28111201072
35 C (95 F): Days263220106
40 C (104 F): Days1220102
90 F (32.2 C): Days2883201038
100 F (37.8 C): Days11620102
0 C (32 F): Ice days (max20820153
0 C (32 F): Frost days (min2894201087
-10 C (14 F): Days with min19920185
-20 C (-4 F): Days with min3220182
20 C (68 F): Tropical nights (min2898201861
25 C (77 F): Days with min17420214
10 mm (0.39 in): Days with 10 mm or more rain2754202042
25 mm (0.98 in): Days with 25 mm or more rain2724201819
50 mm (1.97 in): Days with 50 mm or more rain271020204
100 mm (3.94 in): Days with 100 mm or more rain6320061
10 cm (3.9 in): Days with 10 cm or more snowfall3220182

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 Norfolk Rich 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 (2025-12-31).