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Built 2026-10-19 (19 October 2026)

Boise Lucky Peak Dam Threshold Days by Year (USC00101018)

17 fixed thresholds counted per year at Boise Lucky Peak Dam (USC00101018): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Boise Lucky Peak Dam Thresholds

  • Boise Lucky Peak Dam: days with a maximum temperature at or above 30 C (86 F) in 39 years, most in 1958 with 102.
  • Boise Lucky Peak Dam: days with a maximum temperature at or above 35 C (95 F) in 39 years, most in 1961 with 59.
  • Boise Lucky Peak Dam: days with a maximum temperature at or above 90 F (32.2 C) in 39 years, most in 1958 with 82.
  • Boise Lucky Peak Dam: days with a maximum temperature at or below 0 C (32 F) in 39 years, most in 1984 with 35.
  • 17 fixed thresholds have at least one qualifying day at Boise Lucky Peak Dam.
39 years with a qualifying day
Days at or above 30 C (86 F) per year at Boise Lucky Peak Dam Days per year at Boise Lucky Peak Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 102 in 1958. 0501001501958: 1021959: 841960: 961961: 951962: 801963: 891965: 551970: 771971: 651972: 731973: 741974: 771975: 651976: 521977: 681978: 581979: 751980: 571981: 731982: 471983: 561984: 661986: 691987: 701988: 752010: 642013: 782015: 872016: 622017: 862018: 692019: 652020: 702021: 802022: 832023: 732024: 802025: 892026: 711958196219711975197919831988201620202024
Days per year at Boise Lucky Peak Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 102 in 1958.
Days at or above 30 C (86 F) per year at Boise Lucky Peak Dam
YearDaysDecade average
195810293
19598493
19609683
19619583
19628083
19638983
19655583
19707768.4
19716568.4
19727368.4
19737468.4
19747768.4
19756568.4
19765268.4
19776868.4
19785868.4
19797568.4
19805764.1
19817364.1
19824764.1
19835664.1
19846664.1
19866964.1
19877064.1
19887564.1
20106473
20137873
20158773
20166273
20178673
20186973
20196573
20207078
20218078
20228378
20237378
20248078
20258978
20267178
First to last qualifying date each year at Boise Lucky Peak Dam For each year, a bar from the first to the last day at Boise Lucky Peak Dam meeting 30 C (86 F). 1958: 10 May 1958 to 18 October 19581959: 13 May 1959 to 13 September 19591960: 11 May 1960 to 6 October 19601961: 9 May 1961 to 16 September 19611962: 9 June 1962 to 3 October 19621963: 20 May 1963 to 4 October 19631965: 29 May 1965 to 9 October 19651970: 17 May 1970 to 18 September 19701971: 27 May 1971 to 11 September 19711972: 15 May 1972 to 19 September 19721973: 14 May 1973 to 14 September 19731974: 27 May 1974 to 26 September 19741975: 14 May 1975 to 2 October 19751976: 13 May 1976 to 30 September 19761977: 23 April 1977 to 13 September 19771978: 14 May 1978 to 25 September 19781979: 14 May 1979 to 22 September 19791980: 5 May 1980 to 8 October 19801981: 5 June 1981 to 18 September 19811982: 12 June 1982 to 24 September 19821983: 25 May 1983 to 26 September 19831984: 14 May 1984 to 20 September 19841986: 20 May 1986 to 7 September 19861987: 23 April 1987 to 3 October 19871988: 12 May 1988 to 7 October 19882010: 15 June 2010 to 3 October 20102013: 12 May 2013 to 31 August 20132015: 31 May 2015 to 10 October 20152016: 21 April 2016 to 30 September 20162017: 5 May 2017 to 13 September 20172018: 28 April 2018 to 8 September 20182019: 14 May 2019 to 16 September 20192020: 29 April 2020 to 21 September 20202021: 7 May 2021 to 4 October 20212022: 15 May 2022 to 28 September 20222023: 29 April 2023 to 8 October 20232024: 29 May 2024 to 16 October 20242025: 9 May 2025 to 28 September 20252026: 11 May 2026 to 31 August 202619581963197319781983201020182023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Boise Lucky Peak Dam meeting 30 C (86 F).
First to last qualifying date each year at Boise Lucky Peak Dam
YearFirst dateLast date
19581958-05-101958-10-18
19591959-05-131959-09-13
19601960-05-111960-10-06
19611961-05-091961-09-16
19621962-06-091962-10-03
19631963-05-201963-10-04
19651965-05-291965-10-09
19701970-05-171970-09-18
19711971-05-271971-09-11
19721972-05-151972-09-19
19731973-05-141973-09-14
19741974-05-271974-09-26
19751975-05-141975-10-02
19761976-05-131976-09-30
19771977-04-231977-09-13
19781978-05-141978-09-25
19791979-05-141979-09-22
19801980-05-051980-10-08
19811981-06-051981-09-18
19821982-06-121982-09-24
19831983-05-251983-09-26
19841984-05-141984-09-20
19861986-05-201986-09-07
19871987-04-231987-10-03
19881988-05-121988-10-07
20102010-06-152010-10-03
20132013-05-122013-08-31
20152015-05-312015-10-10
20162016-04-212016-09-30
20172017-05-052017-09-13
20182018-04-282018-09-08
20192019-05-142019-09-16
20202020-04-292020-09-21
20212021-05-072021-10-04
20222022-05-152022-09-28
20232023-04-292023-10-08
20242024-05-292024-10-16
20252025-05-092025-09-28
20262026-05-112026-08-31

Every Fixed Threshold

Fixed thresholds at Boise Lucky Peak Dam
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days39102195871
35 C (95 F): Days3959196134
40 C (104 F): Days281019601
90 F (32.2 C): Days3982195859
100 F (37.8 C): Days3829196112
110 F (43.3 C): Days2219601
0 C (32 F): Ice days (max393519845
0 C (32 F): Frost days (min36151202247
-10 C (14 F): Days with min352919797
-20 C (-4 F): Days with min9919792
20 C (68 F): Tropical nights (min2929202118
25 C (77 F): Days with min1120151
10 mm (0.39 in): Days with 10 mm or more rain381920256
25 mm (0.98 in): Days with 25 mm or more rain24520252
50 mm (1.97 in): Days with 50 mm or more rain2120101
10 cm (3.9 in): Days with 10 cm or more snowfall7320232
25 cm (9.8 in): Days with 25 cm or more snowfall1120231

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1958.

Download the Data

  • Data for Boise Lucky Peak Dam 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 (2026-10-17).