Ruby Lake Nwr Weather Records (USC00267123)

Record envelope, standing records and threshold days for Ruby Lake Nwr (USC00267123), Nevada, United States, with 84 years of record.

Key Facts for Ruby Lake Nwr

Ruby Lake Nwr (USC00267123) is a weather station in Nevada, United States at 40.20 latitude and -115.49 longitude, 1,835 m (6,019 ft) above sea level.
The station reports from 1940 to 2023, 84 years of record.
1,464 records set at Ruby Lake Nwr still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Ruby Lake Nwr set a daily record low maximum temperature of 17.2 C (63.0 F) on 20 August 2023.

About the Station

Location: Nevada, United States, 40.20 latitude, -115.49 longitude.
Elevation: 1,835 m (6,019 ft).
Period of record: 1940 to 2023, 84 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Ruby Lake Nwr. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Ruby Lake Nwr, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	16.7 C (62.1 F)	-32.2 C (-26.0 F)	n/a	n/a
Feb	20.6 C (69.1 F)	-30.6 C (-23.1 F)	n/a	n/a
Mar	25.6 C (78.1 F)	-23.3 C (-9.9 F)	n/a	n/a
Apr	28.3 C (82.9 F)	-16.7 C (1.9 F)	n/a	n/a
May	34.4 C (93.9 F)	-11.7 C (10.9 F)	n/a	n/a
Jun	36.7 C (98.1 F)	-10.0 C (14.0 F)	n/a	n/a
Jul	38.9 C (102.0 F)	-1.1 C (30.0 F)	n/a	n/a
Aug	38.9 C (102.0 F)	-3.9 C (25.0 F)	n/a	n/a
Sep	36.7 C (98.1 F)	-12.2 C (10.0 F)	n/a	n/a
Oct	31.1 C (88.0 F)	-18.3 C (-0.9 F)	n/a	n/a
Nov	23.3 C (73.9 F)	-26.1 C (-15.0 F)	n/a	n/a
Dec	20.0 C (68.0 F)	-33.9 C (-29.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Ruby Lake Nwr still stand. 1945 holds the most, with 112.

Standing records at Ruby Lake Nwr by the year they were set
Year set	Standing records
1940	21
1941	14
1942	17
1943	11
1944	34
1945	112
1946	6
1947	9
1948	23
1949	32
1950	27
1951	13
1952	12
1953	14
1954	15
1955	19
1956	13
1957	9
1958	25
1959	14
1960	17
1961	18
1962	24
1963	19
1964	21
1965	15
1966	18
1967	8
1968	15
1969	20
1970	14
1971	27
1972	21
1973	7
1974	10
1975	16
1976	7
1977	12
1978	9
1979	13
1980	12
1981	20
1982	18
1983	5
1984	16
1985	14
1986	21
1987	16
1988	19
1989	23
1990	26
1991	15
1992	18
1993	15
1994	18
1995	14
1996	16
1997	6
1998	7
1999	9
2000	13
2001	21
2002	21
2003	23
2004	17
2005	2
2006	8
2007	16
2008	23
2009	14
2010	22
2011	11
2012	16
2013	20
2014	14
2015	26
2016	15
2017	27
2018	10
2019	14
2020	22
2021	9
2022	20
2023	21

All-Time Record Progression

17 new records

17 all-time records were set at Ruby Lake Nwr between 10 December 1972 and 1 March 2023. Each dot is a new record.

When Ruby Lake Nwr set new all-time records
Date	Kind	Detail
1972-12-10	Record low maximum temperature	Record low maximum temperature -16.1 C (3.0 F)
1975-07-07	Record high minimum temperature	Record high minimum temperature 21.1 C (70.0 F)
1979-01-11	Record daily precipitation	Record daily precipitation 66.0 mm (2.6 in)
1982-01-01	Record snow depth	Record snow depth 50.8 cm (20.0 in)
1982-01-05	Record snow depth	Record snow depth 53.3 cm (21.0 in)
1982-01-07	Record snow depth	Record snow depth 55.9 cm (22.0 in)
1990-12-22	Record low maximum temperature	Record low maximum temperature -21.1 C (-6.0 F)
1990-12-22	Record low minimum temperature	Record low minimum temperature -32.8 C (-27.0 F)
1990-12-23	Record low minimum temperature	Record low minimum temperature -33.9 C (-29.0 F)
1993-02-22	Record snow depth	Record snow depth 58.4 cm (23.0 in)
1993-02-24	Record snow depth	Record snow depth 63.5 cm (25.0 in)
1993-03-03	Record snow depth	Record snow depth 66.0 cm (26.0 in)
1996-01-24	Record daily snowfall	Record daily snowfall 37.6 cm (14.8 in)
1996-01-24	Record snow depth	Record snow depth 68.6 cm (27.0 in)
2022-03-05	Record daily snowfall	Record daily snowfall 45.7 cm (18.0 in)
2023-01-04	Record daily snowfall	Record daily snowfall 62.2 cm (24.5 in)
2023-03-01	Record snow depth	Record snow depth 99.1 cm (39.0 in)

Wettest Day of Each Month

Jan: 66.0 mm (2.6 in)

The wettest day on record for each calendar month at Ruby Lake Nwr. The most was 66.0 mm (2.6 in) on 11 January 1979.

Record daily precipitation for each month at Ruby Lake Nwr
Month	Record daily precipitation (mm)	Date
Jan	66.0 mm (2.6 in)	11 January 1979
Feb	39.9 mm (1.6 in)	17 February 2011
Mar	37.1 mm (1.5 in)	5 March 2022
Apr	39.1 mm (1.5 in)	27 April 1963
May	41.1 mm (1.6 in)	20 May 1957
Jun	56.4 mm (2.2 in)	1 June 1943
Jul	38.1 mm (1.5 in)	17 July 2015
Aug	40.9 mm (1.6 in)	18 August 1977
Sep	50.0 mm (2.0 in)	6 September 1978
Oct	55.1 mm (2.2 in)	25 October 2010
Nov	53.1 mm (2.1 in)	17 November 2017
Dec	57.9 mm (2.3 in)	30 December 1995

Period of Record Coverage

1940 to 2023

84 years of record at Ruby Lake Nwr, 1940 to 2023. 9 years have data for under 90 percent of days and are left out of rankings: 1974, 1975, 1976, 1977, 1978, 1982, 1988, 2011 and others.

Days with data per year at Ruby Lake Nwr
Year	Days with data	Share of year	Complete
1940	358	98%	Yes
1941	349	96%	Yes
1942	341	93%	Yes
1943	364	100%	Yes
1944	340	93%	Yes
1945	351	96%	Yes
1946	332	91%	Yes
1947	354	97%	Yes
1948	365	100%	Yes
1949	348	95%	Yes
1950	337	92%	Yes
1951	331	91%	Yes
1952	347	95%	Yes
1953	348	95%	Yes
1954	341	93%	Yes
1955	350	96%	Yes
1956	365	100%	Yes
1957	331	91%	Yes
1958	332	91%	Yes
1959	363	99%	Yes
1960	362	99%	Yes
1961	364	100%	Yes
1962	364	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	364	99%	Yes
1969	353	97%	Yes
1970	349	96%	Yes
1971	349	96%	Yes
1972	351	96%	Yes
1973	341	93%	Yes
1974	300	82%	No
1975	247	68%	No
1976	206	56%	No
1977	253	69%	No
1978	243	67%	No
1979	339	93%	Yes
1980	336	92%	Yes
1981	347	95%	Yes
1982	296	81%	No
1983	350	96%	Yes
1984	343	94%	Yes
1985	343	94%	Yes
1986	343	94%	Yes
1987	344	94%	Yes
1988	329	90%	No
1989	361	99%	Yes
1990	359	98%	Yes
1991	358	98%	Yes
1992	354	97%	Yes
1993	365	100%	Yes
1994	365	100%	Yes
1995	365	100%	Yes
1996	366	100%	Yes
1997	365	100%	Yes
1998	333	91%	Yes
1999	365	100%	Yes
2000	366	100%	Yes
2001	365	100%	Yes
2002	334	92%	Yes
2003	365	100%	Yes
2004	335	92%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	364	100%	Yes
2008	366	100%	Yes
2009	365	100%	Yes
2010	365	100%	Yes
2011	327	90%	No
2012	357	98%	Yes
2013	365	100%	Yes
2014	365	100%	Yes
2015	365	100%	Yes
2016	362	99%	Yes
2017	365	100%	Yes
2018	352	96%	Yes
2019	364	100%	Yes
2020	361	99%	Yes
2021	358	98%	Yes
2022	363	99%	Yes
2023	247	68%	No

Latest Records

Latest records at Ruby Lake Nwr
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 August 2023	Ruby Lake Nwr, US	daily low max	17.2 C (63.0 F)	1.7 C (3.1 F)	32 years	22 of 100 (Routine)
16 August 2023	Ruby Lake Nwr, US	daily high min	16.7 C (62.1 F)	0.6 C (1.1 F)	16 years	13 of 100 (Routine)
22 July 2023	Ruby Lake Nwr, US	daily high max (Tie)	36.1 C (97.0 F)	tie	34 years	4 of 100 (Routine)
18 July 2023	Ruby Lake Nwr, US	daily high min	20.0 C (68.0 F)	3.3 C (5.9 F)	20 years	25 of 100 (Routine)
17 July 2023	Ruby Lake Nwr, US	daily high max	37.8 C (100.0 F)	0.6 C (1.1 F)	24 years	16 of 100 (Routine)
16 July 2023	Ruby Lake Nwr, US	daily high max	37.8 C (100.0 F)	1.1 C (2.0 F)	77 years	34 of 100 (Routine)
24 May 2023	Ruby Lake Nwr, US	daily rain	20.1 mm (0.8 in)	4.6 mm (0.18 in)	1 year	16 of 100 (Routine)
13 April 2023	Ruby Lake Nwr, US	daily snow depth	27.9 cm (11.0 in)	25.4 cm (10.0 in)	0 years	48 of 100 (Notable)
12 April 2023	Ruby Lake Nwr, US	daily snow depth	33.0 cm (13.0 in)	20.3 cm (8.0 in)	81 years	72 of 100 (Major)
11 April 2023	Ruby Lake Nwr, US	daily snow depth	38.1 cm (15.0 in)	33.0 cm (13.0 in)	44 years	61 of 100 (Major)
10 April 2023	Ruby Lake Nwr, US	daily snow depth	45.7 cm (18.0 in)	38.1 cm (15.0 in)	25 years	55 of 100 (Notable)
7 April 2023	Ruby Lake Nwr, US	daily snow depth	68.6 cm (27.0 in)	61.0 cm (24.0 in)	24 years	55 of 100 (Notable)
6 April 2023	Ruby Lake Nwr, US	daily snow depth	71.1 cm (28.0 in)	53.3 cm (21.0 in)	24 years	55 of 100 (Notable)
6 April 2023	Ruby Lake Nwr, US	daily low min	-10.6 C (12.9 F)	2.3 C (4.1 F)	77 years	36 of 100 (Notable)
6 April 2023	Ruby Lake Nwr, US	daily low max	0.0 C (32.0 F)	0.6 C (1.1 F)	12 years	12 of 100 (Routine)
5 April 2023	Ruby Lake Nwr, US	daily snow depth	73.7 cm (29.0 in)	63.5 cm (25.0 in)	64 years	67 of 100 (Major)
5 April 2023	Ruby Lake Nwr, US	monthly low max	-5.0 C (23.0 F)	1.1 C (2.0 F)	78 years	42 of 100 (Notable)
5 April 2023	Ruby Lake Nwr, US	daily low min (Tie)	-11.1 C (12.0 F)	tie	77 years	7 of 100 (Routine)
4 April 2023	Ruby Lake Nwr, US	monthly snow depth (Tie)	78.7 cm (31.0 in)	tie	0 years	4 of 100 (Routine)
3 April 2023	Ruby Lake Nwr, US	monthly snow depth	78.7 cm (31.0 in)	38.1 cm (15.0 in)	59 years	75 of 100 (Major)

Climate Trend

68 complete years, 1940 to 2022

One stripe for each of 68 complete years at Ruby Lake Nwr, 1940 to 2022. Blue stripes are years cooler than the station's own mean of 8.2 C (46.7 F); red stripes are warmer. The coolest year was 1945, at 4.2 C (39.6 F), and the warmest was 1981, at 9.7 C (49.4 F). The strongest colour marks a difference of 4.0 C (7.2 F).

Annual mean temperature at Ruby Lake Nwr as warming stripes, 1940 to 2022
Year	Annual mean temperature	Difference from the station mean
1940	8.5 C	+0.32 C
1943	8.9 C	+0.72 C
1945	4.2 C	-3.94 C
1947	8.2 C	+0.01 C
1948	7.2 C	-0.95 C
1949	6.9 C	-1.33 C
1950	8.8 C	+0.60 C
1952	7.3 C	-0.86 C
1953	8.8 C	+0.64 C
1954	8.6 C	+0.41 C
1955	7.0 C	-1.15 C
1956	8.0 C	-0.15 C
1959	8.8 C	+0.63 C
1960	8.3 C	+0.09 C
1961	8.3 C	+0.08 C
1962	8.1 C	-0.11 C
1963	8.4 C	+0.26 C
1964	7.0 C	-1.15 C
1965	7.9 C	-0.30 C
1966	8.2 C	-0.03 C
1967	8.4 C	+0.20 C
1968	8.2 C	+0.03 C
1969	8.0 C	-0.15 C
1970	8.0 C	-0.18 C
1971	7.7 C	-0.51 C
1972	8.1 C	-0.05 C
1973	7.8 C	-0.43 C
1974	9.0 C	+0.77 C
1979	8.4 C	+0.26 C
1980	8.8 C	+0.59 C
1981	9.7 C	+1.51 C
1983	8.0 C	-0.14 C
1984	7.3 C	-0.88 C
1985	7.9 C	-0.33 C
1986	9.6 C	+1.40 C
1987	8.8 C	+0.65 C
1988	8.5 C	+0.32 C
1989	8.2 C	+0.03 C
1990	8.7 C	+0.48 C
1991	8.3 C	+0.12 C
1992	8.6 C	+0.37 C
1993	6.0 C	-2.14 C
1994	8.1 C	-0.08 C
1995	8.2 C	+0.02 C
1996	8.7 C	+0.48 C
1997	8.2 C	+0.03 C
1999	8.6 C	+0.39 C
2000	8.9 C	+0.75 C
2001	8.4 C	+0.18 C
2003	9.1 C	+0.93 C
2005	8.2 C	+0.00 C
2006	8.4 C	+0.24 C
2007	8.7 C	+0.55 C
2008	7.4 C	-0.82 C
2009	7.5 C	-0.68 C
2010	7.3 C	-0.90 C
2011	7.4 C	-0.79 C
2012	9.2 C	+1.05 C
2013	7.6 C	-0.63 C
2014	9.3 C	+1.07 C
2015	9.4 C	+1.17 C
2016	8.2 C	-0.03 C
2017	8.7 C	+0.52 C
2018	8.5 C	+0.31 C
2019	7.5 C	-0.64 C
2020	9.0 C	+0.81 C
2021	8.7 C	+0.48 C
2022	7.8 C	-0.40 C

The fitted trend in annual mean temperature here over 1940 to 2022 is 0.08 C (-0.01 to 0.16) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.14 F (-0.01 to 0.29) per decade. The slope is a straight line fitted to 68 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Ruby Lake Nwr
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.08 C (-0.01 to 0.16) per decade	0.14 F (-0.01 to 0.29) per decade	1940 to 2022	68	Not clearly different from zero
Mean daily maximum	0.05 C (-0.04 to 0.14) per decade	0.1 F (-0.1 to 0.3) per decade	1940 to 2022	68	Not clearly different from zero
Mean daily minimum	0.11 C (0.01 to 0.20) per decade	0.19 F (0.02 to 0.36) per decade	1940 to 2022	68	Rise

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1940 to 2023

Yearly extremes at Ruby Lake Nwr: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	38.9 C (102.0 F)	1969	35.6 C (96.1 F)	84
Coldest night (TNn)	-33.9 C (-29.0 F)	1990	-25.0 C (-13.0 F)	84
Wettest day (Rx1day)	66.0 mm (2.6 in)	1979	28.5 mm (1.1 in)	84
Wettest five days (Rx5day)	127.0 mm (5.0 in)	2023	44.2 mm (1.7 in)	84
Longest dry spell (CDD)	147 days	1944	39 days	84

Hottest day (TXx)

The hottest day of the year at Ruby Lake Nwr, 1940 to 2023. The record is 38.9 C (102.0 F) in 1969, marked on the chart; the median year is 35.6 C (96.1 F).

Hottest day (TXx) at Ruby Lake Nwr by year
Year	Hottest day (TXx)
1940	37.8 C (100.0 F)
1941	35.6 C (96.1 F)
1942	35.0 C (95.0 F)
1943	36.1 C (97.0 F)
1944	33.3 C (91.9 F)
1945	36.7 C (98.1 F)
1946	34.4 C (93.9 F)
1947	35.6 C (96.1 F)
1948	33.3 C (91.9 F)
1949	34.4 C (93.9 F)
1950	35.0 C (95.0 F)
1951	33.9 C (93.0 F)
1952	33.9 C (93.0 F)
1953	36.1 C (97.0 F)
1954	35.6 C (96.1 F)
1955	35.0 C (95.0 F)
1956	33.9 C (93.0 F)
1957	33.9 C (93.0 F)
1958	34.4 C (93.9 F)
1959	35.6 C (96.1 F)
1960	36.7 C (98.1 F)
1961	35.6 C (96.1 F)
1962	35.6 C (96.1 F)
1963	33.9 C (93.0 F)
1964	35.6 C (96.1 F)
1965	32.8 C (91.0 F)
1966	35.0 C (95.0 F)
1967	34.4 C (93.9 F)
1968	33.9 C (93.0 F)
1969	38.9 C (102.0 F)
1970	35.6 C (96.1 F)
1971	36.7 C (98.1 F)
1972	35.6 C (96.1 F)
1973	36.7 C (98.1 F)
1974	33.9 C (93.0 F)
1975	35.6 C (96.1 F)
1976	35.6 C (96.1 F)
1977	36.1 C (97.0 F)
1978	36.7 C (98.1 F)
1979	35.6 C (96.1 F)
1980	35.0 C (95.0 F)
1981	35.0 C (95.0 F)
1982	32.2 C (90.0 F)
1983	35.6 C (96.1 F)
1984	35.0 C (95.0 F)
1985	37.2 C (99.0 F)
1986	35.0 C (95.0 F)
1987	36.1 C (97.0 F)
1988	36.1 C (97.0 F)
1989	35.6 C (96.1 F)
1990	35.0 C (95.0 F)
1991	36.1 C (97.0 F)
1992	34.4 C (93.9 F)
1993	32.8 C (91.0 F)
1994	36.1 C (97.0 F)
1995	34.4 C (93.9 F)
1996	35.0 C (95.0 F)
1997	34.4 C (93.9 F)
1998	37.8 C (100.0 F)
1999	33.9 C (93.0 F)
2000	37.2 C (99.0 F)
2001	36.1 C (97.0 F)
2002	38.9 C (102.0 F)
2003	37.2 C (99.0 F)
2004	34.4 C (93.9 F)
2005	36.7 C (98.1 F)
2006	36.1 C (97.0 F)
2007	37.2 C (99.0 F)
2008	35.0 C (95.0 F)
2009	35.6 C (96.1 F)
2010	35.0 C (95.0 F)
2011	35.0 C (95.0 F)
2012	36.7 C (98.1 F)
2013	37.8 C (100.0 F)
2014	36.7 C (98.1 F)
2015	36.7 C (98.1 F)
2016	36.1 C (97.0 F)
2017	35.6 C (96.1 F)
2018	36.1 C (97.0 F)
2019	34.4 C (93.9 F)
2020	36.7 C (98.1 F)
2021	37.2 C (99.0 F)
2022	36.1 C (97.0 F)
2023	37.8 C (100.0 F)

Coldest night (TNn)

The coldest night of the year at Ruby Lake Nwr, 1940 to 2023. The record is -33.9 C (-29.0 F) in 1990, marked on the chart; the median year is -25.0 C (-13.0 F).

Coldest night (TNn) at Ruby Lake Nwr by year
Year	Coldest night (TNn)
1940	-22.8 C (-9.0 F)
1941	-18.3 C (-0.9 F)
1942	-25.0 C (-13.0 F)
1943	-19.4 C (-2.9 F)
1944	-30.6 C (-23.1 F)
1945	-28.9 C (-20.0 F)
1946	-23.3 C (-9.9 F)
1947	-28.9 C (-20.0 F)
1948	-27.2 C (-17.0 F)
1949	-32.2 C (-26.0 F)
1950	-27.8 C (-18.0 F)
1951	-31.1 C (-24.0 F)
1952	-32.2 C (-26.0 F)
1953	-17.8 C (0.0 F)
1954	-23.3 C (-9.9 F)
1955	-26.7 C (-16.1 F)
1956	-25.6 C (-14.1 F)
1957	-32.2 C (-26.0 F)
1958	-21.7 C (-7.1 F)
1959	-22.2 C (-8.0 F)
1960	-23.3 C (-9.9 F)
1961	-25.0 C (-13.0 F)
1962	-29.4 C (-20.9 F)
1963	-30.6 C (-23.1 F)
1964	-28.9 C (-20.0 F)
1965	-25.0 C (-13.0 F)
1966	-27.2 C (-17.0 F)
1967	-24.4 C (-11.9 F)
1968	-24.4 C (-11.9 F)
1969	-25.6 C (-14.1 F)
1970	-28.9 C (-20.0 F)
1971	-28.9 C (-20.0 F)
1972	-29.4 C (-20.9 F)
1973	-24.4 C (-11.9 F)
1974	-24.4 C (-11.9 F)
1975	-26.1 C (-15.0 F)
1976	-18.3 C (-0.9 F)
1977	-27.2 C (-17.0 F)
1978	-27.8 C (-18.0 F)
1979	-30.6 C (-23.1 F)
1980	-27.8 C (-18.0 F)
1981	-18.3 C (-0.9 F)
1982	-27.8 C (-18.0 F)
1983	-25.0 C (-13.0 F)
1984	-25.6 C (-14.1 F)
1985	-24.4 C (-11.9 F)
1986	-17.8 C (0.0 F)
1987	-25.0 C (-13.0 F)
1988	-28.9 C (-20.0 F)
1989	-30.6 C (-23.1 F)
1990	-33.9 C (-29.0 F)
1991	-20.6 C (-5.1 F)
1992	-23.3 C (-9.9 F)
1993	-30.0 C (-22.0 F)
1994	-23.3 C (-9.9 F)
1995	-20.0 C (-4.0 F)
1996	-22.2 C (-8.0 F)
1997	-26.1 C (-15.0 F)
1998	-23.3 C (-9.9 F)
1999	-18.9 C (-2.0 F)
2000	-18.3 C (-0.9 F)
2001	-25.0 C (-13.0 F)
2002	-29.4 C (-20.9 F)
2003	-17.8 C (0.0 F)
2004	-23.9 C (-11.0 F)
2005	-16.7 C (1.9 F)
2006	-21.1 C (-6.0 F)
2007	-21.7 C (-7.1 F)
2008	-26.7 C (-16.1 F)
2009	-25.6 C (-14.1 F)
2010	-26.1 C (-15.0 F)
2011	-27.8 C (-18.0 F)
2012	-20.6 C (-5.1 F)
2013	-27.2 C (-17.0 F)
2014	-23.9 C (-11.0 F)
2015	-30.6 C (-23.1 F)
2016	-27.2 C (-17.0 F)
2017	-31.1 C (-24.0 F)
2018	-21.1 C (-6.0 F)
2019	-21.7 C (-7.1 F)
2020	-21.1 C (-6.0 F)
2021	-22.2 C (-8.0 F)
2022	-23.9 C (-11.0 F)
2023	-25.0 C (-13.0 F)

Wettest day (Rx1day)

The wettest day of the year at Ruby Lake Nwr, 1940 to 2023. The record is 66.0 mm (2.6 in) in 1979, marked on the chart; the median year is 28.5 mm (1.1 in).

Wettest day (Rx1day) at Ruby Lake Nwr by year
Year	Wettest day (Rx1day)
1940	20.8 mm (0.8 in)
1941	26.4 mm (1.0 in)
1942	33.0 mm (1.3 in)
1943	56.4 mm (2.2 in)
1944	40.6 mm (1.6 in)
1945	25.4 mm (1.0 in)
1946	21.1 mm (0.8 in)
1947	19.3 mm (0.8 in)
1948	16.5 mm (0.6 in)
1949	19.1 mm (0.8 in)
1950	36.8 mm (1.4 in)
1951	27.9 mm (1.1 in)
1952	22.4 mm (0.9 in)
1953	33.0 mm (1.3 in)
1954	17.8 mm (0.7 in)
1955	25.7 mm (1.0 in)
1956	44.2 mm (1.7 in)
1957	41.1 mm (1.6 in)
1958	25.4 mm (1.0 in)
1959	22.9 mm (0.9 in)
1960	31.2 mm (1.2 in)
1961	21.1 mm (0.8 in)
1962	21.6 mm (0.9 in)
1963	39.1 mm (1.5 in)
1964	46.5 mm (1.8 in)
1965	28.2 mm (1.1 in)
1966	28.7 mm (1.1 in)
1967	29.0 mm (1.1 in)
1968	16.0 mm (0.6 in)
1969	30.5 mm (1.2 in)
1970	34.5 mm (1.4 in)
1971	33.5 mm (1.3 in)
1972	26.2 mm (1.0 in)
1973	19.8 mm (0.8 in)
1974	21.6 mm (0.9 in)
1975	29.2 mm (1.1 in)
1976	37.3 mm (1.5 in)
1977	40.9 mm (1.6 in)
1978	50.0 mm (2.0 in)
1979	66.0 mm (2.6 in)
1980	34.8 mm (1.4 in)
1981	20.1 mm (0.8 in)
1982	37.8 mm (1.5 in)
1983	47.5 mm (1.9 in)
1984	41.1 mm (1.6 in)
1985	19.1 mm (0.8 in)
1986	23.1 mm (0.9 in)
1987	20.3 mm (0.8 in)
1988	27.2 mm (1.1 in)
1989	21.8 mm (0.9 in)
1990	22.9 mm (0.9 in)
1991	24.6 mm (1.0 in)
1992	29.0 mm (1.1 in)
1993	24.4 mm (1.0 in)
1994	21.3 mm (0.8 in)
1995	57.9 mm (2.3 in)
1996	37.1 mm (1.5 in)
1997	26.4 mm (1.0 in)
1998	23.6 mm (0.9 in)
1999	16.0 mm (0.6 in)
2000	19.6 mm (0.8 in)
2001	24.6 mm (1.0 in)
2002	42.9 mm (1.7 in)
2003	34.3 mm (1.4 in)
2004	20.3 mm (0.8 in)
2005	35.6 mm (1.4 in)
2006	40.1 mm (1.6 in)
2007	17.8 mm (0.7 in)
2008	12.7 mm (0.5 in)
2009	17.8 mm (0.7 in)
2010	55.1 mm (2.2 in)
2011	39.9 mm (1.6 in)
2012	38.1 mm (1.5 in)
2013	19.8 mm (0.8 in)
2014	31.8 mm (1.3 in)
2015	42.7 mm (1.7 in)
2016	31.5 mm (1.2 in)
2017	53.1 mm (2.1 in)
2018	30.5 mm (1.2 in)
2019	25.4 mm (1.0 in)
2020	17.5 mm (0.7 in)
2021	32.3 mm (1.3 in)
2022	37.1 mm (1.5 in)
2023	50.8 mm (2.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ruby Lake Nwr, 1940 to 2023. The record is 127.0 mm (5.0 in) in 2023, marked on the chart; the median year is 44.2 mm (1.7 in).

Wettest five days (Rx5day) at Ruby Lake Nwr by year
Year	Wettest five days (Rx5day)
1940	30.4 mm (1.2 in)
1941	39.8 mm (1.6 in)
1942	45.7 mm (1.8 in)
1943	75.7 mm (3.0 in)
1944	42.4 mm (1.7 in)
1945	59.7 mm (2.4 in)
1946	31.3 mm (1.2 in)
1947	31.0 mm (1.2 in)
1948	33.3 mm (1.3 in)
1949	24.2 mm (1.0 in)
1950	106.7 mm (4.2 in)
1951	56.4 mm (2.2 in)
1952	24.7 mm (1.0 in)
1953	55.1 mm (2.2 in)
1954	23.1 mm (0.9 in)
1955	34.3 mm (1.4 in)
1956	54.6 mm (2.1 in)
1957	71.6 mm (2.8 in)
1958	57.2 mm (2.3 in)
1959	35.9 mm (1.4 in)
1960	42.7 mm (1.7 in)
1961	27.9 mm (1.1 in)
1962	40.5 mm (1.6 in)
1963	58.2 mm (2.3 in)
1964	92.5 mm (3.6 in)
1965	36.0 mm (1.4 in)
1966	59.6 mm (2.3 in)
1967	29.0 mm (1.1 in)
1968	34.6 mm (1.4 in)
1969	67.1 mm (2.6 in)
1970	60.4 mm (2.4 in)
1971	69.3 mm (2.7 in)
1972	36.9 mm (1.5 in)
1973	35.8 mm (1.4 in)
1974	30.2 mm (1.2 in)
1975	57.9 mm (2.3 in)
1976	53.9 mm (2.1 in)
1977	50.3 mm (2.0 in)
1978	67.9 mm (2.7 in)
1979	86.1 mm (3.4 in)
1980	51.8 mm (2.0 in)
1981	54.6 mm (2.1 in)
1982	77.5 mm (3.1 in)
1983	51.6 mm (2.0 in)
1984	66.0 mm (2.6 in)
1985	30.0 mm (1.2 in)
1986	54.5 mm (2.1 in)
1987	29.5 mm (1.2 in)
1988	42.1 mm (1.7 in)
1989	32.3 mm (1.3 in)
1990	23.4 mm (0.9 in)
1991	36.8 mm (1.4 in)
1992	66.1 mm (2.6 in)
1993	44.2 mm (1.7 in)
1994	36.4 mm (1.4 in)
1995	65.9 mm (2.6 in)
1996	65.6 mm (2.6 in)
1997	58.4 mm (2.3 in)
1998	44.2 mm (1.7 in)
1999	35.0 mm (1.4 in)
2000	20.4 mm (0.8 in)
2001	36.9 mm (1.5 in)
2002	58.5 mm (2.3 in)
2003	35.3 mm (1.4 in)
2004	64.5 mm (2.5 in)
2005	72.3 mm (2.8 in)
2006	60.7 mm (2.4 in)
2007	25.7 mm (1.0 in)
2008	30.2 mm (1.2 in)
2009	27.0 mm (1.1 in)
2010	73.4 mm (2.9 in)
2011	42.9 mm (1.7 in)
2012	38.1 mm (1.5 in)
2013	25.9 mm (1.0 in)
2014	60.2 mm (2.4 in)
2015	68.4 mm (2.7 in)
2016	49.3 mm (1.9 in)
2017	58.9 mm (2.3 in)
2018	37.6 mm (1.5 in)
2019	36.6 mm (1.4 in)
2020	23.0 mm (0.9 in)
2021	54.8 mm (2.2 in)
2022	40.7 mm (1.6 in)
2023	127.0 mm (5.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ruby Lake Nwr, 1940 to 2023. The record is 147 days in 1944, marked on the chart; the median year is 39 days.

Longest dry spell (CDD) at Ruby Lake Nwr by year
Year	Longest dry spell (CDD)
1940	31 days
1941	29 days
1942	39 days
1943	55 days
1944	147 days
1945	32 days
1946	29 days
1947	44 days
1948	42 days
1949	35 days
1950	43 days
1951	31 days
1952	63 days
1953	44 days
1954	37 days
1955	37 days
1956	53 days
1957	68 days
1958	57 days
1959	44 days
1960	26 days
1961	28 days
1962	46 days
1963	46 days
1964	58 days
1965	28 days
1966	46 days
1967	33 days
1968	46 days
1969	46 days
1970	31 days
1971	24 days
1972	42 days
1973	27 days
1974	128 days
1975	24 days
1976	74 days
1977	46 days
1978	39 days
1979	35 days
1980	44 days
1981	86 days
1982	24 days
1983	26 days
1984	28 days
1985	36 days
1986	40 days
1987	48 days
1988	36 days
1989	41 days
1990	27 days
1991	34 days
1992	34 days
1993	31 days
1994	54 days
1995	50 days
1996	61 days
1997	20 days
1998	19 days
1999	85 days
2000	38 days
2001	51 days
2002	44 days
2003	37 days
2004	26 days
2005	37 days
2006	40 days
2007	38 days
2008	63 days
2009	49 days
2010	41 days
2011	28 days
2012	29 days
2013	26 days
2014	39 days
2015	36 days
2016	66 days
2017	33 days
2018	55 days
2019	40 days
2020	41 days
2021	37 days
2022	43 days
2023	8 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

68 years with a frost

Across 68 years with a frost, the median last spring frost at Ruby Lake Nwr falls on 2 June and the median first autumn frost on 17 September, which leaves a median of 113 days between them.

In 1990 to 2022 the median growing season was 116 days. That is 5 days more than in 1940 to 1980.

Fitted over all years, the growing season changes by +1.6 days per decade at this station.

Frost dates and growing season at Ruby Lake Nwr
Measure	Median, all years	Earliest period (1940 to 1980)	Recent period (1990 to 2022)	Recent against earliest	Fitted trend
Last spring frost	2 June	3 June	30 May	4 days earlier	-0.4 days per decade
First autumn frost	17 September	17 September	19 September	2 days later	+1.2 days per decade
Growing days	113 days	111 days	116 days	5 days more	+1.6 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

76 years, 1940 to 2022

A day with at least 27.8 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 65.0 mm (2.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Ruby Lake Nwr: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	27.8 mm (1.1 in)
5 years	37.4 mm (1.5 in)
10 years	43.9 mm (1.7 in)
25 years	52.3 mm (2.1 in)
50 years	58.6 mm (2.3 in)
100 years	65.0 mm (2.6 in)	Longer than the 76 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 76 years of values from 1940 to 2022.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 66.0 mm (2.6 in) in 1979; 56.4 mm (2.2 in) in 1943; 55.1 mm (2.2 in) in 2010.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Climate Twins

2008 to 2022 against 1961 to 1990

Over 2008 to 2022, Ruby Lake Nwr had a mean temperature of 8.2 C (46.8 F) and 325.4 mm (12.8 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Metropolis (United States, 127 km away), Vernon (United States, 256 km away) and Carpenter 3N (United States, 942 km away).

Climate twins of Ruby Lake Nwr: stations whose 1961 to 1990 climate is closest to its 2008 to 2022 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Metropolis	United States	127 km (79 mi)	8.4 C (47.1 F)	353.1 mm (13.9 in)	0.63
Vernon	United States	256 km (159 mi)	8.2 C (46.8 F)	256.4 mm (10.1 in)	0.66
Carpenter 3N	United States	942 km (585 mi)	8.3 C (46.9 F)	348.3 mm (13.7 in)	0.72

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

Data for Ruby Lake Nwr standing records by year: CSV or JSON. Field meanings are on the data page.
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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).