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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Petersburg Threshold Days by Year (USC00446656)

15 fixed thresholds counted per year at Petersburg (USC00446656): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Petersburg Thresholds

  • Petersburg: days with 10 mm (0.39 in) or more of precipitation in 24 years, most in 2018 with 49.
  • Petersburg: days with 25 mm (0.98 in) or more of precipitation in 24 years, most in 2020 with 21.
  • Petersburg: days with a maximum temperature at or above 30 C (86 F) in 22 years, most in 2019 with 102.
  • Petersburg: days with a maximum temperature at or above 90 F (32.2 C) in 22 years, most in 2010 with 64.
  • 15 fixed thresholds have at least one qualifying day at Petersburg.
22 years with a qualifying day
Days at or above 30 C (86 F) per year at Petersburg Days per year at Petersburg with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 102 in 2019. 0501001502004: 692005: 912006: 722007: 942008: 912009: 752010: 982011: 862012: 802013: 682014: 602015: 812016: 832017: 872018: 942019: 1022020: 682021: 872022: 872023: 702024: 722025: 8120042007201020132016201920222025
Days per year at Petersburg with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 102 in 2019.
Days at or above 30 C (86 F) per year at Petersburg
YearDaysDecade average
20046982
20059182
20067282
20079482
20089182
20097582
20109883.9
20118683.9
20128083.9
20136883.9
20146083.9
20158183.9
20168383.9
20178783.9
20189483.9
201910283.9
20206877.5
20218777.5
20228777.5
20237077.5
20247277.5
20258177.5
First to last qualifying date each year at Petersburg For each year, a bar from the first to the last day at Petersburg meeting 30 C (86 F). 2004: 18 April 2004 to 22 September 20042005: 19 April 2005 to 6 October 20052006: 16 April 2006 to 23 September 20062007: 27 March 2007 to 10 October 20072008: 19 April 2008 to 17 October 20082009: 26 April 2009 to 25 September 20092010: 6 April 2010 to 13 October 20102011: 5 April 2011 to 16 September 20112012: 24 March 2012 to 28 September 20122013: 10 April 2013 to 7 October 20132014: 9 May 2014 to 12 September 20142015: 12 May 2015 to 19 September 20152016: 18 April 2016 to 19 October 20162017: 16 April 2017 to 11 October 20172018: 2 May 2018 to 8 October 20182019: 30 April 2019 to 4 October 20192020: 20 March 2020 to 11 September 20202021: 28 April 2021 to 23 September 20212022: 13 April 2022 to 25 September 20222023: 5 April 2023 to 12 September 20232024: 15 April 2024 to 31 August 20242025: 5 April 2025 to 26 September 202520042007201020132016201920222025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Petersburg meeting 30 C (86 F).
First to last qualifying date each year at Petersburg
YearFirst dateLast date
20042004-04-182004-09-22
20052005-04-192005-10-06
20062006-04-162006-09-23
20072007-03-272007-10-10
20082008-04-192008-10-17
20092009-04-262009-09-25
20102010-04-062010-10-13
20112011-04-052011-09-16
20122012-03-242012-09-28
20132013-04-102013-10-07
20142014-05-092014-09-12
20152015-05-122015-09-19
20162016-04-182016-10-19
20172017-04-162017-10-11
20182018-05-022018-10-08
20192019-04-302019-10-04
20202020-03-202020-09-11
20212021-04-282021-09-23
20222022-04-132022-09-25
20232023-04-052023-09-12
20242024-04-152024-08-31
20252025-04-052025-09-26

Every Fixed Threshold

Fixed thresholds at Petersburg
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days22102201981
35 C (95 F): Days203020107
40 C (104 F): Days2120101
90 F (32.2 C): Days2264201043
100 F (37.8 C): Days9620102
0 C (32 F): Ice days (max15920154
0 C (32 F): Frost days (min22100201484
-10 C (14 F): Days with min1818202518
20 C (68 F): Tropical nights (min2296201864
25 C (77 F): Days with min13520245
10 mm (0.39 in): Days with 10 mm or more rain2449201844
25 mm (0.98 in): Days with 25 mm or more rain2421202020
50 mm (1.97 in): Days with 50 mm or more rain22720185
100 mm (3.94 in): Days with 100 mm or more rain5120071
10 cm (3.9 in): Days with 10 cm or more snowfall3120091

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2004.

Download the Data

  • Data for Petersburg 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).