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Built 2026-10-17 (17 October 2026)

Assateague Island Maryland Threshold Days by Year

9 fixed thresholds counted per year at Assateague Island Maryland (USR0000MASS): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Assateague Island Maryland Thresholds

  • Assateague Island Maryland: days with a maximum temperature at or above 30 C (86 F) in 33 years, most in 2012 with 65.
  • Assateague Island Maryland: days with a maximum temperature at or above 90 F (32.2 C) in 33 years, most in 2010 with 26.
  • Assateague Island Maryland: nights with a minimum temperature at or below 0 C (32 F) in 33 years, most in 2010 with 76.
  • Assateague Island Maryland: nights with a minimum temperature at or above 20 C (68 F) in 33 years, most in 2018 with 109.
  • 9 fixed thresholds have at least one qualifying day at Assateague Island Maryland.
33 years with a qualifying day
Days at or above 30 C (86 F) per year at Assateague Island Maryland Days per year at Assateague Island Maryland with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 65 in 2012. 0204060801994: 151995: 341996: 191997: 251998: 381999: 322000: 252001: 192002: 432003: 222004: 342005: 532006: 332007: 452008: 502009: 362010: 632011: 462012: 652013: 212014: 102015: 292016: 412017: 172018: 302019: 382020: 322021: 332022: 232023: 212024: 82025: 252026: 26199419982002200620102014201820222026
Days per year at Assateague Island Maryland with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 65 in 2012.
Days at or above 30 C (86 F) per year at Assateague Island Maryland
YearDaysDecade average
19941527.2
19953427.2
19961927.2
19972527.2
19983827.2
19993227.2
20002536
20011936
20024336
20032236
20043436
20055336
20063336
20074536
20085036
20093636
20106336
20114636
20126536
20132136
20141036
20152936
20164136
20171736
20183036
20193836
20203224
20213324
20222324
20232124
2024824
20252524
20262624
First to last qualifying date each year at Assateague Island Maryland For each year, a bar from the first to the last day at Assateague Island Maryland meeting 30 C (86 F). 1994: 1 June 1994 to 14 September 19941995: 7 June 1995 to 14 September 19951996: 19 May 1996 to 10 September 19961997: 10 June 1997 to 6 October 19971998: 19 May 1998 to 1 October 19981999: 29 May 1999 to 29 August 19992000: 6 May 2000 to 13 September 20002001: 12 June 2001 to 9 September 20012002: 17 April 2002 to 5 October 20022003: 23 June 2003 to 2 September 20032004: 22 May 2004 to 10 September 20042005: 7 June 2005 to 23 September 20052006: 29 June 2006 to 29 August 20062007: 28 May 2007 to 9 October 20072008: 1 June 2008 to 15 September 20082009: 26 April 2009 to 24 September 20092010: 1 May 2010 to 17 September 20102011: 30 May 2011 to 8 September 20112012: 28 May 2012 to 5 October 20122013: 16 May 2013 to 5 October 20132014: 27 May 2014 to 6 September 20142015: 13 June 2015 to 9 September 20152016: 25 May 2016 to 14 September 20162017: 19 May 2017 to 31 August 20172018: 19 June 2018 to 3 October 20182019: 26 May 2019 to 2 October 20192020: 3 June 2020 to 4 September 20202021: 22 May 2021 to 13 September 20212022: 21 May 2022 to 20 September 20222023: 3 July 2023 to 7 September 20232024: 8 May 2024 to 19 August 20242025: 17 May 2025 to 25 August 20252026: 5 June 2026 to 18 September 20261994199920042009201420192024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Assateague Island Maryland meeting 30 C (86 F).
First to last qualifying date each year at Assateague Island Maryland
YearFirst dateLast date
19941994-06-011994-09-14
19951995-06-071995-09-14
19961996-05-191996-09-10
19971997-06-101997-10-06
19981998-05-191998-10-01
19991999-05-291999-08-29
20002000-05-062000-09-13
20012001-06-122001-09-09
20022002-04-172002-10-05
20032003-06-232003-09-02
20042004-05-222004-09-10
20052005-06-072005-09-23
20062006-06-292006-08-29
20072007-05-282007-10-09
20082008-06-012008-09-15
20092009-04-262009-09-24
20102010-05-012010-09-17
20112011-05-302011-09-08
20122012-05-282012-10-05
20132013-05-162013-10-05
20142014-05-272014-09-06
20152015-06-132015-09-09
20162016-05-252016-09-14
20172017-05-192017-08-31
20182018-06-192018-10-03
20192019-05-262019-10-02
20202020-06-032020-09-04
20212021-05-222021-09-13
20222022-05-212022-09-20
20232023-07-032023-09-07
20242024-05-082024-08-19
20252025-05-172025-08-25
20262026-06-052026-09-18

Every Fixed Threshold

Fixed thresholds at Assateague Island Maryland
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3365201226
35 C (95 F): Days23920122
90 F (32.2 C): Days3326201015
100 F (37.8 C): Days6220061
0 C (32 F): Ice days (max261320157
0 C (32 F): Frost days (min3376201039
-10 C (14 F): Days with min18719943
20 C (68 F): Tropical nights (min33109201892
25 C (77 F): Days with min201120182

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1994.

Download the Data

  • Data for Assateague Island Maryland 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-15).