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Built 2026-10-19 (19 October 2026)

Big Falls Hydro Threshold Days by Year (USC00470773)

17 fixed thresholds counted per year at Big Falls Hydro (USC00470773): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Big Falls Hydro Thresholds

  • Big Falls Hydro: days with 10 cm (3.9 in) or more of snowfall in 56 years, most in 2019 with 13.
  • Big Falls Hydro: days with 10 mm (0.39 in) or more of precipitation in 40 years, most in 1968 with 41.
  • Big Falls Hydro: days with 25 mm (0.98 in) or more of precipitation in 40 years, most in 1985 with 13.
  • Big Falls Hydro: days with a maximum temperature at or below 0 C (32 F) in 29 years, most in 2014 with 110.
  • 17 fixed thresholds have at least one qualifying day at Big Falls Hydro.
28 years with a qualifying day
Days at or above 30 C (86 F) per year at Big Falls Hydro Days per year at Big Falls Hydro with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 49 in 1988. 02040601984: 71985: 71986: 151988: 491989: 171990: 81991: 141992: 51993: 62007: 232008: 22009: 22010: 112011: 122012: 202013: 112015: 22016: 92017: 52018: 132019: 72020: 282021: 192022: 82023: 182024: 62025: 112026: 231984198819912007201020132017202020232026
Days per year at Big Falls Hydro with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 49 in 1988.
Days at or above 30 C (86 F) per year at Big Falls Hydro
YearDaysDecade average
1984719
1985719
19861519
19884919
19891719
199088.3
1991148.3
199258.3
199368.3
2007239
200829
200929
20101110
20111210
20122010
20131110
2015210
2016910
2017510
20181310
2019710
20202816.1
20211916.1
2022816.1
20231816.1
2024616.1
20251116.1
20262316.1
First to last qualifying date each year at Big Falls Hydro For each year, a bar from the first to the last day at Big Falls Hydro meeting 30 C (86 F). 1984: 12 July 1984 to 28 August 19841985: 4 May 1985 to 6 September 19851986: 28 May 1986 to 16 August 19861988: 21 May 1988 to 17 August 19881989: 19 June 1989 to 11 August 19891990: 25 June 1990 to 16 August 19901991: 14 May 1991 to 30 August 19911992: 11 June 1992 to 10 August 19921993: 12 August 1993 to 28 August 19932007: 15 May 2007 to 6 October 20072008: 30 July 2008 to 19 August 20082009: 21 May 2009 to 24 June 20092010: 25 May 2010 to 31 August 20102011: 7 June 2011 to 2 September 20112012: 11 June 2012 to 5 September 20122013: 7 July 2013 to 8 September 20132015: 15 August 2015 to 16 August 20152016: 7 May 2016 to 11 August 20162017: 11 June 2017 to 25 September 20172018: 27 May 2018 to 16 September 20182019: 1 June 2019 to 4 August 20192020: 2 June 2020 to 28 August 20202021: 5 June 2021 to 27 July 20212022: 13 May 2022 to 23 July 20222023: 1 June 2023 to 6 September 20232024: 15 July 2024 to 27 August 20242025: 21 June 2025 to 9 August 20252026: 27 May 2026 to 5 September 20261984198919932010201520192023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Big Falls Hydro meeting 30 C (86 F).
First to last qualifying date each year at Big Falls Hydro
YearFirst dateLast date
19841984-07-121984-08-28
19851985-05-041985-09-06
19861986-05-281986-08-16
19881988-05-211988-08-17
19891989-06-191989-08-11
19901990-06-251990-08-16
19911991-05-141991-08-30
19921992-06-111992-08-10
19931993-08-121993-08-28
20072007-05-152007-10-06
20082008-07-302008-08-19
20092009-05-212009-06-24
20102010-05-252010-08-31
20112011-06-072011-09-02
20122012-06-112012-09-05
20132013-07-072013-09-08
20152015-08-152015-08-16
20162016-05-072016-08-11
20172017-06-112017-09-25
20182018-05-272018-09-16
20192019-06-012019-08-04
20202020-06-022020-08-28
20212021-06-052021-07-27
20222022-05-132022-07-23
20232023-06-012023-09-06
20242024-07-152024-08-27
20252025-06-212025-08-09
20262026-05-272026-09-05

Every Fixed Threshold

Fixed thresholds at Big Falls Hydro
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2849198823
35 C (95 F): Days31019881
90 F (32.2 C): Days242719883
100 F (37.8 C): Days1119881
0 C (32 F): Ice days (max29110201449
0 C (32 F): Frost days (min292261993102
-10 C (14 F): Days with min29119198953
-20 C (-4 F): Days with min2963198925
-30 C (-22 F): Days with min262719857
20 C (68 F): Tropical nights (min22720106
25 C (77 F): Days with min1220252
10 mm (0.39 in): Days with 10 mm or more rain4041196813
25 mm (0.98 in): Days with 25 mm or more rain401319852
50 mm (1.97 in): Days with 50 mm or more rain27319751
100 mm (3.94 in): Days with 100 mm or more rain3119601
10 cm (3.9 in): Days with 10 cm or more snowfall561320192
25 cm (9.8 in): Days with 25 cm or more snowfall10320191

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1984.

Download the Data

  • Data for Big Falls Hydro 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).