Ruby Lake Nwr Threshold Days by Year (USC00267123)

15 fixed thresholds counted per year at Ruby Lake Nwr (USC00267123): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ruby Lake Nwr Thresholds

Ruby Lake Nwr: days with a maximum temperature at or above 30 C (86 F) in 76 years, most in 2007 with 76.
Ruby Lake Nwr: days with a maximum temperature at or above 90 F (32.2 C) in 76 years, most in 1940 with 50.
Ruby Lake Nwr: days with 10 mm (0.39 in) or more of precipitation in 76 years, most in 1945 with 20.
Ruby Lake Nwr: days with a maximum temperature at or below 0 C (32 F) in 75 years, most in 1944 with 47.
15 fixed thresholds have at least one qualifying day at Ruby Lake Nwr.

Days at or above 30 C (86 F)

76 years with a qualifying day

Days per year at Ruby Lake Nwr with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 76 in 2007.

Days at or above 30 C (86 F) per year at Ruby Lake Nwr
Year	Days	Decade average
1940	73	40
1941	17	40
1942	56	40
1943	44	40
1944	37	40
1945	19	40
1946	48	40
1947	36	40
1948	38	40
1949	32	40
1950	34	41.4
1951	25	41.4
1952	40	41.4
1953	45	41.4
1954	34	41.4
1955	46	41.4
1956	46	41.4
1957	43	41.4
1958	41	41.4
1959	60	41.4
1960	51	48
1961	53	48
1962	48	48
1963	42	48
1964	51	48
1965	19	48
1966	50	48
1967	58	48
1968	50	48
1969	58	48
1970	46	46.8
1971	52	46.8
1972	42	46.8
1973	45	46.8
1979	49	46.8
1980	35	51
1981	67	51
1983	32	51
1984	42	51
1985	61	51
1986	60	51
1987	46	51
1988	65	51
1989	51	51
1990	64	43.4
1991	55	43.4
1992	39	43.4
1993	22	43.4
1994	63	43.4
1995	35	43.4
1996	57	43.4
1997	33	43.4
1998	25	43.4
1999	41	43.4
2000	66	61.3
2001	73	61.3
2002	61	61.3
2003	70	61.3
2004	43	61.3
2005	50	61.3
2006	60	61.3
2007	76	61.3
2008	69	61.3
2009	45	61.3
2010	56	58.3
2012	61	58.3
2013	59	58.3
2014	50	58.3
2015	60	58.3
2016	65	58.3
2017	62	58.3
2018	63	58.3
2019	49	58.3
2020	75	71.3
2021	69	71.3
2022	70	71.3

For each year, a bar from the first to the last day at Ruby Lake Nwr meeting 30 C (86 F).

First to last qualifying date each year at Ruby Lake Nwr
Year	First date	Last date
1940	1940-06-11	1940-08-31
1941	1941-06-25	1941-08-13
1942	1942-06-27	1942-09-03
1943	1943-07-06	1943-09-16
1944	1944-05-13	1944-08-22
1945	1945-07-07	1945-09-11
1946	1946-07-01	1946-08-29
1947	1947-06-20	1947-09-07
1948	1948-07-10	1948-09-15
1949	1949-07-02	1949-09-26
1950	1950-06-28	1950-09-05
1951	1951-06-16	1951-09-17
1952	1952-07-03	1952-09-19
1953	1953-06-30	1953-09-13
1954	1954-05-19	1954-09-01
1955	1955-06-07	1955-09-11
1956	1956-06-11	1956-09-19
1957	1957-06-04	1957-09-07
1958	1958-05-20	1958-09-06
1959	1959-06-11	1959-09-10
1960	1960-06-13	1960-09-12
1961	1961-06-16	1961-08-24
1962	1962-06-24	1962-09-18
1963	1963-07-08	1963-09-27
1964	1964-06-25	1964-08-26
1965	1965-07-03	1965-08-27
1966	1966-06-14	1966-09-23
1967	1967-05-23	1967-09-03
1968	1968-06-17	1968-09-12
1969	1969-06-04	1969-09-07
1970	1970-06-03	1970-08-25
1971	1971-06-16	1971-09-14
1972	1972-05-30	1972-08-22
1973	1973-06-08	1973-09-05
1979	1979-06-11	1979-09-20
1980	1980-06-29	1980-09-05
1981	1981-05-01	1981-09-17
1983	1983-05-29	1983-09-13
1984	1984-05-29	1984-09-11
1985	1985-06-06	1985-09-02
1986	1986-05-26	1986-09-07
1987	1987-06-13	1987-09-23
1988	1988-06-03	1988-09-09
1989	1989-06-14	1989-09-04
1990	1990-06-21	1990-09-15
1991	1991-06-11	1991-09-03
1992	1992-06-21	1992-09-10
1993	1993-06-26	1993-09-11
1994	1994-05-30	1994-09-07
1995	1995-07-06	1995-09-16
1996	1996-06-07	1996-10-09
1997	1997-05-31	1997-09-08
1998	1998-06-29	1998-09-03
1999	1999-06-15	1999-09-10
2000	2000-06-04	2000-09-17
2001	2001-05-24	2001-09-25
2002	2002-06-01	2002-09-06
2003	2003-05-24	2003-09-28
2004	2004-06-04	2004-09-12
2005	2005-06-21	2005-09-03
2006	2006-05-19	2006-09-14
2007	2007-06-04	2007-09-14
2008	2008-05-19	2008-09-09
2009	2009-05-19	2009-09-13
2010	2010-06-07	2010-10-02
2012	2012-05-22	2012-09-06
2013	2013-06-03	2013-09-02
2014	2014-05-28	2014-09-18
2015	2015-06-16	2015-09-14
2016	2016-06-05	2016-09-02
2017	2017-06-05	2017-09-08
2018	2018-06-05	2018-09-11
2019	2019-07-02	2019-09-06
2020	2020-05-29	2020-09-17
2021	2021-06-04	2021-09-12
2022	2022-05-27	2022-09-12

Every Fixed Threshold

Fixed thresholds at Ruby Lake Nwr
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	76	76	2007	70
35 C (95 F): Days	56	13	1940	13
90 F (32.2 C): Days	76	50	1940	46
100 F (37.8 C): Days	5	3	1940	1
0 C (32 F): Ice days (max	75	47	1944	30
0 C (32 F): Frost days (min	75	244	1945	201
-10 C (14 F): Days with min	75	104	1945	73
-20 C (-4 F): Days with min	66	33	1944	2
-30 C (-22 F): Days with min	12	7	1949	2
20 C (68 F): Tropical nights (min	4	1	1961	1
10 mm (0.39 in): Days with 10 mm or more rain	76	20	1945	10
25 mm (0.98 in): Days with 25 mm or more rain	46	5	1996	2
50 mm (1.97 in): Days with 50 mm or more rain	4	1	1943	1
10 cm (3.9 in): Days with 10 cm or more snowfall	54	11	1983	5
25 cm (9.8 in): Days with 25 cm or more snowfall	6	2	2022	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1940.

Download the Data

Data for Ruby Lake Nwr 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Ruby Lake Nwr Threshold Days by Year (USC00267123)

Key Facts for Ruby Lake Nwr Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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