Built 2026-10-19 (19 October 2026)

Rough Rvr Lake Threshold Days by Year (USC00156988)

19 fixed thresholds counted per year at Rough Rvr Lake (USC00156988): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rough Rvr Lake Thresholds

  • Rough Rvr Lake: days with a maximum temperature at or above 30 C (86 F) in 61 years, most in 2010 with 128.
  • Rough Rvr Lake: days with a maximum temperature at or above 90 F (32.2 C) in 61 years, most in 2010 with 97.
  • Rough Rvr Lake: days with a maximum temperature at or below 0 C (32 F) in 61 years, most in 1977 with 37.
  • Rough Rvr Lake: days with 10 mm (0.39 in) or more of precipitation in 61 years, most in 2011 with 55.
  • 19 fixed thresholds have at least one qualifying day at Rough Rvr Lake.
61 years with a qualifying day
Days at or above 30 C (86 F) per year at Rough Rvr Lake Days per year at Rough Rvr Lake with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 128 in 2010. 0501001501965: 851966: 701967: 601968: 691969: 861970: 831971: 681972: 691973: 741974: 521975: 791976: 431977: 721978: 681979: 411980: 831981: 371982: 451983: 921984: 721985: 611986: 801987: 1041988: 811989: 651990: 661991: 931992: 361993: 811994: 731995: 811996: 711997: 781998: 1101999: 1002000: 832001: 872002: 1022003: 632004: 662005: 972006: 782007: 1232008: 832009: 592010: 1282011: 932012: 952013: 682014: 902015: 892016: 1232017: 952018: 1132019: 1072020: 802021: 832022: 872023: 672024: 902025: 6196519721979198619932000200720142021
Days per year at Rough Rvr Lake with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 128 in 2010.
Days at or above 30 C (86 F) per year at Rough Rvr Lake
YearDaysDecade average
19658574
19667074
19676074
19686974
19698674
19708364.9
19716864.9
19726964.9
19737464.9
19745264.9
19757964.9
19764364.9
19777264.9
19786864.9
19794164.9
19808372
19813772
19824572
19839272
19847272
19856172
19868072
198710472
19888172
19896572
19906678.9
19919378.9
19923678.9
19938178.9
19947378.9
19958178.9
19967178.9
19977878.9
199811078.9
199910078.9
20008384.1
20018784.1
200210284.1
20036384.1
20046684.1
20059784.1
20067884.1
200712384.1
20088384.1
20095984.1
2010128100.1
201193100.1
201295100.1
201368100.1
201490100.1
201589100.1
2016123100.1
201795100.1
2018113100.1
2019107100.1
20208068.8
20218368.8
20228768.8
20236768.8
20249068.8
2025668.8
First to last qualifying date each year at Rough Rvr Lake For each year, a bar from the first to the last day at Rough Rvr Lake meeting 30 C (86 F). 1965: 23 April 1965 to 23 September 19651966: 9 May 1966 to 11 September 19661967: 6 April 1967 to 5 October 19671968: 3 May 1968 to 24 September 19681969: 6 May 1969 to 1 October 19691970: 1 May 1970 to 24 September 19701971: 21 April 1971 to 4 October 19711972: 22 May 1972 to 22 September 19721973: 27 May 1973 to 27 September 19731974: 18 May 1974 to 13 September 19741975: 21 May 1975 to 11 September 19751976: 9 June 1976 to 9 September 19761977: 16 April 1977 to 10 September 19771978: 26 May 1978 to 22 September 19781979: 11 May 1979 to 6 September 19791980: 23 April 1980 to 11 October 19801981: 1 July 1981 to 14 September 19811982: 16 May 1982 to 7 October 19821983: 12 June 1983 to 4 October 19831984: 26 May 1984 to 23 September 19841985: 15 May 1985 to 23 September 19851986: 26 April 1986 to 1 October 19861987: 22 April 1987 to 29 September 19871988: 6 April 1988 to 24 September 19881989: 26 April 1989 to 14 October 19891990: 25 April 1990 to 12 September 19901991: 16 May 1991 to 17 September 19911992: 17 May 1992 to 22 September 19921993: 9 May 1993 to 15 September 19931994: 24 May 1994 to 16 September 19941995: 11 April 1995 to 15 September 19951996: 10 May 1996 to 12 September 19961997: 20 May 1997 to 13 October 19971998: 14 May 1998 to 7 October 19981999: 12 May 1999 to 29 September 19992000: 7 May 2000 to 25 October 20002001: 8 April 2001 to 14 September 20012002: 16 April 2002 to 4 October 20022003: 15 April 2003 to 14 September 20032004: 7 May 2004 to 8 October 20042005: 9 May 2005 to 20 October 20052006: 14 April 2006 to 5 October 20062007: 26 March 2007 to 9 October 20072008: 31 May 2008 to 13 October 20082009: 25 April 2009 to 17 September 20092010: 3 April 2010 to 19 October 20102011: 10 April 2011 to 8 October 20112012: 21 March 2012 to 14 September 20122013: 11 April 2013 to 5 October 20132014: 5 May 2014 to 3 October 20142015: 4 May 2015 to 9 October 20152016: 19 April 2016 to 3 November 20162017: 20 April 2017 to 4 October 20172018: 2 May 2018 to 10 October 20182019: 1 May 2019 to 6 October 20192020: 9 April 2020 to 23 October 20202021: 28 April 2021 to 15 October 20212022: 23 April 2022 to 25 September 20222023: 21 April 2023 to 5 October 20232024: 17 April 2024 to 7 October 20242025: 19 April 2025 to 5 June 202519651973198119891997200520132021JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Rough Rvr Lake meeting 30 C (86 F).
First to last qualifying date each year at Rough Rvr Lake
YearFirst dateLast date
19651965-04-231965-09-23
19661966-05-091966-09-11
19671967-04-061967-10-05
19681968-05-031968-09-24
19691969-05-061969-10-01
19701970-05-011970-09-24
19711971-04-211971-10-04
19721972-05-221972-09-22
19731973-05-271973-09-27
19741974-05-181974-09-13
19751975-05-211975-09-11
19761976-06-091976-09-09
19771977-04-161977-09-10
19781978-05-261978-09-22
19791979-05-111979-09-06
19801980-04-231980-10-11
19811981-07-011981-09-14
19821982-05-161982-10-07
19831983-06-121983-10-04
19841984-05-261984-09-23
19851985-05-151985-09-23
19861986-04-261986-10-01
19871987-04-221987-09-29
19881988-04-061988-09-24
19891989-04-261989-10-14
19901990-04-251990-09-12
19911991-05-161991-09-17
19921992-05-171992-09-22
19931993-05-091993-09-15
19941994-05-241994-09-16
19951995-04-111995-09-15
19961996-05-101996-09-12
19971997-05-201997-10-13
19981998-05-141998-10-07
19991999-05-121999-09-29
20002000-05-072000-10-25
20012001-04-082001-09-14
20022002-04-162002-10-04
20032003-04-152003-09-14
20042004-05-072004-10-08
20052005-05-092005-10-20
20062006-04-142006-10-05
20072007-03-262007-10-09
20082008-05-312008-10-13
20092009-04-252009-09-17
20102010-04-032010-10-19
20112011-04-102011-10-08
20122012-03-212012-09-14
20132013-04-112013-10-05
20142014-05-052014-10-03
20152015-05-042015-10-09
20162016-04-192016-11-03
20172017-04-202017-10-04
20182018-05-022018-10-10
20192019-05-012019-10-06
20202020-04-092020-10-23
20212021-04-282021-10-15
20222022-04-232022-09-25
20232023-04-212023-10-05
20242024-04-172024-10-07
20252025-04-192025-06-05

Every Fixed Threshold

Fixed thresholds at Rough Rvr Lake
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days6112820106
35 C (95 F): Days5248201014
40 C (104 F): Days6720127
90 F (32.2 C): Days619720102
100 F (37.8 C): Days181720122
110 F (43.3 C): Days1320123
0 C (32 F): Ice days (max6137197715
0 C (32 F): Frost days (min56136199669
-10 C (14 F): Days with min5644197714
-20 C (-4 F): Days with min261119772
-30 C (-22 F): Days with min1119941
20 C (68 F): Tropical nights (min565720161
25 C (77 F): Days with min3119801
10 mm (0.39 in): Days with 10 mm or more rain6155201121
25 mm (0.98 in): Days with 25 mm or more rain6128201911
50 mm (1.97 in): Days with 50 mm or more rain581020117
100 mm (3.94 in): Days with 100 mm or more rain13219891
10 cm (3.9 in): Days with 10 cm or more snowfall15219771
25 cm (9.8 in): Days with 25 cm or more snowfall2120041

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1965.

Download the Data

  • Data for Rough Rvr Lake 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).