Daily records
Page built 2026-10-19
Data as of 2025-12-31
Search
Built 2026-10-19 (19 October 2026)

Mapleton Threshold Days by Year (CA008102566)

14 fixed thresholds counted per year at Mapleton (CA008102566): 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 11 years, most in 1975 with 12.
  • Mapleton: days with a maximum temperature at or below 0 C (32 F) in 11 years, most in 1978 with 99.
  • Mapleton: nights with a minimum temperature at or below 0 C (32 F) in 11 years, most in 1978 with 210.
  • Mapleton: nights with a minimum temperature at or below -10 C (14 F) in 11 years, most in 1978 with 100.
  • 14 fixed thresholds have at least one qualifying day at Mapleton.
11 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 12 in 1975. 0510151973: 11974: 21975: 121976: 71977: 81978: 61979: 21980: 21981: 31982: 51983: 7197319751977197919811983
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 12 in 1975.
Days at or above 30 C (86 F) per year at Mapleton
YearDaysDecade average
197315.4
197425.4
1975125.4
197675.4
197785.4
197865.4
197925.4
198024.3
198134.3
198254.3
198374.3
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). 1973: 8 July 1973 to 8 July 19731974: 12 August 1974 to 13 August 19741975: 23 June 1975 to 11 August 19751976: 16 June 1976 to 22 August 19761977: 22 May 1977 to 29 August 19771978: 28 May 1978 to 16 August 19781979: 16 June 1979 to 10 July 19791980: 25 June 1980 to 26 June 19801981: 3 July 1981 to 2 August 19811982: 7 July 1982 to 19 July 19821983: 21 June 1983 to 6 September 1983197319751977197919811983JanFebMarAprMayJunJulAugSepOctNovDec
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
19731973-07-081973-07-08
19741974-08-121974-08-13
19751975-06-231975-08-11
19761976-06-161976-08-22
19771977-05-221977-08-29
19781978-05-281978-08-16
19791979-06-161979-07-10
19801980-06-251980-06-26
19811981-07-031981-08-02
19821982-07-071982-07-19
19831983-06-211983-09-06

Every Fixed Threshold

Fixed thresholds at Mapleton
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days111219757
35 C (95 F): Days1119751
90 F (32.2 C): Days4319771
0 C (32 F): Ice days (max1199197884
0 C (32 F): Frost days (min112101978196
-10 C (14 F): Days with min11100197869
-20 C (-4 F): Days with min1134197621
-30 C (-22 F): Days with min9319763
20 C (68 F): Tropical nights (min6419731
10 mm (0.39 in): Days with 10 mm or more rain1151197948
25 mm (0.98 in): Days with 25 mm or more rain111619736
50 mm (1.97 in): Days with 50 mm or more rain6319731
10 cm (3.9 in): Days with 10 cm or more snowfall112019775
25 cm (9.8 in): Days with 25 cm or more snowfall8319771

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1973.

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).