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

Mapleton Threshold Days by Year (USC00355204)

12 fixed thresholds counted per year at Mapleton (USC00355204): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mapleton Thresholds

  • Mapleton: days with a maximum temperature at or above 30 C (86 F) in 17 years, most in 2014 with 40.
  • Mapleton: days with a maximum temperature at or above 90 F (32.2 C) in 16 years, most in 2017 with 26.
  • Mapleton: nights with a minimum temperature at or below 0 C (32 F) in 14 years, most in 1929 with 75.
  • Mapleton: days with a maximum temperature at or above 35 C (95 F) in 12 years, most in 2017 with 12.
  • 12 fixed thresholds have at least one qualifying day at Mapleton.
17 years with a qualifying day
Days at or above 30 C (86 F) per year at Mapleton Days per year at Mapleton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 40 in 2014. 0102030401928: 131929: 112006: 172007: 92009: 122011: 92012: 52013: 152014: 402015: 312016: 272017: 402018: 202019: 172020: 312021: 342022: 30192820062009201220142016201820202022
Days per year at Mapleton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 40 in 2014.
Days at or above 30 C (86 F) per year at Mapleton
YearDaysDecade average
19281312
19291112
20061712.7
2007912.7
20091212.7
2011922.7
2012522.7
20131522.7
20144022.7
20153122.7
20162722.7
20174022.7
20182022.7
20191722.7
20203131.7
20213431.7
20223031.7
First to last qualifying date each year at Mapleton For each year, a bar from the first to the last day at Mapleton meeting 30 C (86 F). 1928: 10 July 1928 to 10 August 19281929: 24 June 1929 to 29 August 19292006: 15 May 2006 to 26 September 20062007: 29 May 2007 to 9 September 20072009: 1 July 2009 to 22 September 20092011: 5 July 2011 to 10 September 20112012: 13 May 2012 to 14 August 20122013: 6 May 2013 to 11 September 20132014: 1 May 2014 to 8 October 20142015: 6 June 2015 to 11 September 20152016: 8 April 2016 to 17 September 20162017: 5 May 2017 to 28 September 20172018: 25 April 2018 to 28 September 20182019: 10 May 2019 to 6 September 20192020: 9 May 2020 to 1 October 20202021: 18 April 2021 to 25 September 20212022: 22 June 2022 to 26 September 2022192820072012201520182021JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mapleton meeting 30 C (86 F).
First to last qualifying date each year at Mapleton
YearFirst dateLast date
19281928-07-101928-08-10
19291929-06-241929-08-29
20062006-05-152006-09-26
20072007-05-292007-09-09
20092009-07-012009-09-22
20112011-07-052011-09-10
20122012-05-132012-08-14
20132013-05-062013-09-11
20142014-05-012014-10-08
20152015-06-062015-09-11
20162016-04-082016-09-17
20172017-05-052017-09-28
20182018-04-252018-09-28
20192019-05-102019-09-06
20202020-05-092020-10-01
20212021-04-182021-09-25
20222022-06-222022-09-26

Every Fixed Threshold

Fixed thresholds at Mapleton
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days1740201430
35 C (95 F): Days121220173
40 C (104 F): Days4120151
90 F (32.2 C): Days1626201711
100 F (37.8 C): Days8520151
0 C (32 F): Frost days (min147519296
-10 C (14 F): Days with min1320093
10 mm (0.39 in): Days with 10 mm or more rain1089201244
25 mm (0.98 in): Days with 25 mm or more rain1038200618
50 mm (1.97 in): Days with 50 mm or more rain101120124
100 mm (3.94 in): Days with 100 mm or more rain6220061
10 cm (3.9 in): Days with 10 cm or more snowfall1119291

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1928.

Download the Data

  • Data for Mapleton 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).