Guide Rock Weather Records (USC00253485)

Record envelope, standing records and threshold days for Guide Rock (USC00253485), Nebraska, United States, with 110 years of record.

Key Facts for Guide Rock

Guide Rock (USC00253485) is a weather station in Nebraska, United States at 40.07 latitude and -98.33 longitude, 498 m (1,635 ft) above sea level.
The station reports from 1900 to 2009, 110 years of record.
1,464 records set at Guide Rock still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Guide Rock set a daily record precipitation of 20.6 mm (0.8 in) on 11 November 2008.

About the Station

Location: Nebraska, United States, 40.07 latitude, -98.33 longitude.
Elevation: 498 m (1,635 ft).
Period of record: 1900 to 2009, 110 years.
Eligible elements: 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 Guide Rock. 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 Guide Rock, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	15.6 C (60.1 F)	-26.1 C (-15.0 F)	n/a	n/a
Feb	27.8 C (82.0 F)	-28.9 C (-20.0 F)	n/a	n/a
Mar	26.7 C (80.1 F)	-21.7 C (-7.1 F)	n/a	n/a
Apr	35.6 C (96.1 F)	-13.3 C (8.1 F)	n/a	n/a
May	35.6 C (96.1 F)	-2.2 C (28.0 F)	n/a	n/a
Jun	40.0 C (104.0 F)	6.7 C (44.1 F)	n/a	n/a
Jul	44.4 C (111.9 F)	7.8 C (46.0 F)	n/a	n/a
Aug	41.1 C (106.0 F)	7.2 C (45.0 F)	n/a	n/a
Sep	36.7 C (98.1 F)	-2.2 C (28.0 F)	n/a	n/a
Oct	32.2 C (90.0 F)	-7.8 C (18.0 F)	n/a	n/a
Nov	26.7 C (80.1 F)	-15.0 C (5.0 F)	n/a	n/a
Dec	15.6 C (60.1 F)	-24.4 C (-11.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Guide Rock still stand. 1901 holds the most, with 395.

All-Time Record Progression

2 new records

2 all-time records were set at Guide Rock between 9 July 1950 and 26 October 1997. Each dot is a new record.

When Guide Rock set new all-time records
Date	Kind	Detail
1950-07-09	Record daily precipitation	Record daily precipitation 168.9 mm (6.6 in)
1997-10-26	Record snow depth	Record snow depth 61.0 cm (24.0 in)

Wettest Day of Each Month

Jul: 168.9 mm (6.6 in)

The wettest day on record for each calendar month at Guide Rock. The most was 168.9 mm (6.6 in) on 9 July 1950.

Record daily precipitation for each month at Guide Rock
Month	Record daily precipitation (mm)	Date
Jan	27.2 mm (1.1 in)	23 January 1965
Feb	30.5 mm (1.2 in)	18 February 1971
Mar	54.4 mm (2.1 in)	26 March 1959
Apr	76.5 mm (3.0 in)	2 April 1925
May	147.3 mm (5.8 in)	11 May 1903
Jun	92.2 mm (3.6 in)	17 June 1957
Jul	168.9 mm (6.6 in)	9 July 1950
Aug	108.0 mm (4.3 in)	2 August 1911
Sep	152.4 mm (6.0 in)	29 September 1983
Oct	88.9 mm (3.5 in)	30 October 1979
Nov	64.8 mm (2.6 in)	8 November 1970
Dec	50.8 mm (2.0 in)	15 December 1984

Period of Record Coverage

1900 to 1981

14 years of record at Guide Rock, 1900 to 1981. 12 years have data for under 90 percent of days and are left out of rankings: 1900, 1903, 1907, 1966, 1967, 1972, 1973, 1975 and others.

Days with data per year at Guide Rock
Year	Days with data	Share of year	Complete
1900	87	24%	No
1901	356	98%	Yes
1902	353	97%	Yes
1903	292	80%	No
1907	26	7%	No
1966	31	8%	No
1967	30	8%	No
1972	194	53%	No
1973	29	8%	No
1975	58	16%	No
1976	88	24%	No
1977	31	8%	No
1979	55	15%	No
1981	30	8%	No

Latest Records

Latest records at Guide Rock
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 November 2008	Guide Rock, US	daily rain	20.6 mm (0.8 in)	12.0 mm (0.5 in)	15 years	20 of 100 (Routine)
22 October 2008	Guide Rock, US	daily rain	59.7 mm (2.4 in)	33.0 mm (1.3 in)	76 years	59 of 100 (Notable)
13 October 2008	Guide Rock, US	daily rain	38.1 mm (1.5 in)	19.6 mm (0.8 in)	77 years	49 of 100 (Notable)
7 October 2008	Guide Rock, US	daily rain	36.3 mm (1.4 in)	12.2 mm (0.5 in)	4 years	21 of 100 (Routine)
8 September 2008	Guide Rock, US	daily rain (Tie)	35.1 mm (1.4 in)	tie	73 years	7 of 100 (Routine)
25 July 2008	Guide Rock, US	daily rain	30.5 mm (1.2 in)	6.4 mm (0.25 in)	7 years	15 of 100 (Routine)
16 July 2008	Guide Rock, US	daily rain	32.5 mm (1.3 in)	7.1 mm (0.28 in)	1 year	14 of 100 (Routine)
23 May 2008	Guide Rock, US	daily rain	58.4 mm (2.3 in)	7.6 mm (0.30 in)	36 years	26 of 100 (Routine)
11 December 2007	Guide Rock, US	daily rain	24.1 mm (0.9 in)	14.7 mm (0.6 in)	45 years	20 of 100 (Routine)
8 December 2007	Guide Rock, US	daily snow depth (Tie)	7.6 cm (3.0 in)	tie	64 years	7 of 100 (Routine)
8 October 2007	Guide Rock, US	daily rain	35.6 mm (1.4 in)	1.3 mm (0.05 in)	36 years	22 of 100 (Routine)
5 October 2007	Guide Rock, US	daily rain	53.3 mm (2.1 in)	30.4 mm (1.2 in)	12 years	39 of 100 (Notable)
23 August 2007	Guide Rock, US	daily rain	40.6 mm (1.6 in)	8.8 mm (0.35 in)	24 years	24 of 100 (Routine)
29 July 2007	Guide Rock, US	daily rain	61.0 mm (2.4 in)	25.4 mm (1.0 in)	81 years	49 of 100 (Notable)
16 July 2007	Guide Rock, US	daily rain	25.4 mm (1.0 in)	1.3 mm (0.05 in)	82 years	34 of 100 (Routine)
21 January 2007	Guide Rock, US	daily snowfall	20.3 cm (8.0 in)	15.2 cm (6.0 in)	61 years	64 of 100 (Major)
21 January 2007	Guide Rock, US	daily snow depth (Tie)	20.3 cm (8.0 in)	tie	69 years	7 of 100 (Routine)
21 January 2007	Guide Rock, US	daily rain (Tie)	10.9 mm (0.4 in)	tie	8 years	3 of 100 (Routine)
31 December 2006	Guide Rock, US	daily rain	14.0 mm (0.6 in)	3.6 mm (0.14 in)	75 years	20 of 100 (Routine)
30 December 2006	Guide Rock, US	daily rain	31.8 mm (1.3 in)	20.4 mm (0.8 in)	33 years	52 of 100 (Notable)

Extremes by Year

1900 to 2009

Yearly extremes at Guide Rock: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	44.4 C (111.9 F)	1901	32.5 C (90.5 F)	14
Coldest night (TNn)	-28.9 C (-20.0 F)	1979	-17.0 C (1.5 F)	14
Wettest day (Rx1day)	168.9 mm (6.6 in)	1950	58.4 mm (2.3 in)	108
Wettest five days (Rx5day)	190.8 mm (7.5 in)	1957	83.5 mm (3.3 in)	108
Longest dry spell (CDD)	82 days	1936	34 days	108

Hottest day (TXx)

The hottest day of the year at Guide Rock, 1900 to 2009. The record is 44.4 C (111.9 F) in 1901, marked on the chart; the median year is 32.5 C (90.5 F).

Hottest day (TXx) at Guide Rock by year
Year	Hottest day (TXx)
1900	30.6 C (87.1 F)
1901	44.4 C (111.9 F)
1902	38.9 C (102.0 F)
1903	37.8 C (100.0 F)
1904	n/a
1905	n/a
1906	n/a
1907	13.3 C (55.9 F)
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	31.7 C (89.1 F)
1967	21.1 C (70.0 F)
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	36.7 C (98.1 F)
1973	21.1 C (70.0 F)
1974	n/a
1975	25.6 C (78.1 F)
1976	30.0 C (86.0 F)
1977	33.3 C (91.9 F)
1978	n/a
1979	35.6 C (96.1 F)
1980	n/a
1981	33.3 C (91.9 F)
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a

Coldest night (TNn)

The coldest night of the year at Guide Rock, 1900 to 2009. The record is -28.9 C (-20.0 F) in 1979, marked on the chart; the median year is -17.0 C (1.5 F).

Coldest night (TNn) at Guide Rock by year
Year	Coldest night (TNn)
1900	-17.8 C (0.0 F)
1901	-24.4 C (-11.9 F)
1902	-26.1 C (-15.0 F)
1903	-25.0 C (-13.0 F)
1904	n/a
1905	n/a
1906	n/a
1907	-16.1 C (3.0 F)
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	9.4 C (48.9 F)
1967	-9.4 C (15.1 F)
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	-20.0 C (-4.0 F)
1973	-8.9 C (16.0 F)
1974	n/a
1975	-18.9 C (-2.0 F)
1976	11.1 C (52.0 F)
1977	10.0 C (50.0 F)
1978	n/a
1979	-28.9 C (-20.0 F)
1980	n/a
1981	-1.1 C (30.0 F)
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a

Wettest day (Rx1day)

The wettest day of the year at Guide Rock, 1900 to 2009. The record is 168.9 mm (6.6 in) in 1950, marked on the chart; the median year is 58.4 mm (2.3 in).

Wettest day (Rx1day) at Guide Rock by year
Year	Wettest day (Rx1day)
1900	120.7 mm (4.8 in)
1901	34.3 mm (1.4 in)
1902	77.5 mm (3.1 in)
1903	147.3 mm (5.8 in)
1904	48.8 mm (1.9 in)
1905	63.0 mm (2.5 in)
1906	66.5 mm (2.6 in)
1907	74.2 mm (2.9 in)
1908	104.1 mm (4.1 in)
1909	71.1 mm (2.8 in)
1910	50.8 mm (2.0 in)
1911	108.0 mm (4.3 in)
1912	61.5 mm (2.4 in)
1913	45.7 mm (1.8 in)
1914	28.4 mm (1.1 in)
1915	59.7 mm (2.4 in)
1916	57.7 mm (2.3 in)
1917	69.9 mm (2.8 in)
1918	58.4 mm (2.3 in)
1919	122.7 mm (4.8 in)
1920	35.6 mm (1.4 in)
1921	72.9 mm (2.9 in)
1922	33.0 mm (1.3 in)
1923	45.7 mm (1.8 in)
1924	45.7 mm (1.8 in)
1925	76.5 mm (3.0 in)
1926	70.1 mm (2.8 in)
1927	39.4 mm (1.6 in)
1928	63.5 mm (2.5 in)
1929	21.6 mm (0.9 in)
1931	51.6 mm (2.0 in)
1932	49.8 mm (2.0 in)
1933	40.6 mm (1.6 in)
1934	26.2 mm (1.0 in)
1935	38.9 mm (1.5 in)
1936	41.4 mm (1.6 in)
1937	45.2 mm (1.8 in)
1938	44.2 mm (1.7 in)
1939	52.6 mm (2.1 in)
1940	46.7 mm (1.8 in)
1941	78.7 mm (3.1 in)
1942	93.0 mm (3.7 in)
1943	55.9 mm (2.2 in)
1944	82.0 mm (3.2 in)
1945	82.3 mm (3.2 in)
1946	117.3 mm (4.6 in)
1947	41.7 mm (1.6 in)
1948	46.7 mm (1.8 in)
1949	66.3 mm (2.6 in)
1950	168.9 mm (6.6 in)
1951	81.3 mm (3.2 in)
1952	68.8 mm (2.7 in)
1953	86.9 mm (3.4 in)
1954	33.8 mm (1.3 in)
1955	53.6 mm (2.1 in)
1956	61.2 mm (2.4 in)
1957	92.2 mm (3.6 in)
1958	91.2 mm (3.6 in)
1959	54.4 mm (2.1 in)
1960	47.2 mm (1.9 in)
1961	64.8 mm (2.6 in)
1962	84.3 mm (3.3 in)
1963	97.3 mm (3.8 in)
1964	39.6 mm (1.6 in)
1965	58.4 mm (2.3 in)
1966	47.8 mm (1.9 in)
1967	73.7 mm (2.9 in)
1968	40.6 mm (1.6 in)
1969	47.0 mm (1.9 in)
1970	64.8 mm (2.6 in)
1971	78.7 mm (3.1 in)
1972	50.8 mm (2.0 in)
1973	132.1 mm (5.2 in)
1974	34.3 mm (1.4 in)
1975	71.1 mm (2.8 in)
1976	55.9 mm (2.2 in)
1977	58.4 mm (2.3 in)
1978	57.2 mm (2.3 in)
1979	88.9 mm (3.5 in)
1980	31.8 mm (1.3 in)
1981	50.8 mm (2.0 in)
1982	69.9 mm (2.8 in)
1983	152.4 mm (6.0 in)
1984	50.8 mm (2.0 in)
1985	71.1 mm (2.8 in)
1986	50.8 mm (2.0 in)
1988	95.3 mm (3.8 in)
1989	50.8 mm (2.0 in)
1990	50.8 mm (2.0 in)
1991	35.6 mm (1.4 in)
1992	71.9 mm (2.8 in)
1993	64.8 mm (2.6 in)
1994	40.1 mm (1.6 in)
1995	52.1 mm (2.1 in)
1996	64.8 mm (2.6 in)
1997	73.7 mm (2.9 in)
1998	39.4 mm (1.6 in)
1999	47.5 mm (1.9 in)
2000	64.0 mm (2.5 in)
2001	95.3 mm (3.8 in)
2002	57.2 mm (2.3 in)
2003	65.5 mm (2.6 in)
2004	48.3 mm (1.9 in)
2005	63.5 mm (2.5 in)
2006	50.8 mm (2.0 in)
2007	61.0 mm (2.4 in)
2008	59.7 mm (2.4 in)
2009	26.7 mm (1.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Guide Rock, 1900 to 2009. The record is 190.8 mm (7.5 in) in 1957, marked on the chart; the median year is 83.5 mm (3.3 in).

Wettest five days (Rx5day) at Guide Rock by year
Year	Wettest five days (Rx5day)
1900	122.0 mm (4.8 in)
1901	50.8 mm (2.0 in)
1902	132.1 mm (5.2 in)
1903	149.1 mm (5.9 in)
1904	63.6 mm (2.5 in)
1905	103.6 mm (4.1 in)
1906	97.7 mm (3.8 in)
1907	96.8 mm (3.8 in)
1908	87.1 mm (3.4 in)
1909	80.8 mm (3.2 in)
1910	66.0 mm (2.6 in)
1911	118.4 mm (4.7 in)
1912	124.9 mm (4.9 in)
1913	83.9 mm (3.3 in)
1914	41.7 mm (1.6 in)
1915	83.9 mm (3.3 in)
1916	76.0 mm (3.0 in)
1917	99.8 mm (3.9 in)
1918	71.1 mm (2.8 in)
1919	150.1 mm (5.9 in)
1920	63.5 mm (2.5 in)
1921	81.3 mm (3.2 in)
1922	68.6 mm (2.7 in)
1923	69.9 mm (2.8 in)
1924	55.9 mm (2.2 in)
1925	85.9 mm (3.4 in)
1926	71.9 mm (2.8 in)
1927	77.5 mm (3.1 in)
1928	134.3 mm (5.3 in)
1929	35.4 mm (1.4 in)
1931	67.1 mm (2.6 in)
1932	71.2 mm (2.8 in)
1933	62.2 mm (2.4 in)
1934	45.3 mm (1.8 in)
1935	87.2 mm (3.4 in)
1936	65.3 mm (2.6 in)
1937	45.2 mm (1.8 in)
1938	84.3 mm (3.3 in)
1939	82.8 mm (3.3 in)
1940	69.8 mm (2.7 in)
1941	123.2 mm (4.9 in)
1942	96.8 mm (3.8 in)
1943	126.8 mm (5.0 in)
1944	117.8 mm (4.6 in)
1945	91.4 mm (3.6 in)
1946	147.0 mm (5.8 in)
1947	55.2 mm (2.2 in)
1948	47.0 mm (1.9 in)
1949	157.6 mm (6.2 in)
1950	185.2 mm (7.3 in)
1951	120.6 mm (4.7 in)
1952	89.6 mm (3.5 in)
1953	90.2 mm (3.6 in)
1954	45.1 mm (1.8 in)
1955	98.8 mm (3.9 in)
1956	102.5 mm (4.0 in)
1957	190.8 mm (7.5 in)
1958	100.8 mm (4.0 in)
1959	77.0 mm (3.0 in)
1960	83.1 mm (3.3 in)
1961	104.1 mm (4.1 in)
1962	116.0 mm (4.6 in)
1963	112.0 mm (4.4 in)
1964	89.4 mm (3.5 in)
1965	102.6 mm (4.0 in)
1966	62.3 mm (2.5 in)
1967	92.8 mm (3.7 in)
1968	59.7 mm (2.4 in)
1969	77.5 mm (3.1 in)
1970	70.7 mm (2.8 in)
1971	121.8 mm (4.8 in)
1972	77.5 mm (3.1 in)
1973	135.9 mm (5.4 in)
1974	49.8 mm (2.0 in)
1975	100.3 mm (3.9 in)
1976	74.9 mm (2.9 in)
1977	71.2 mm (2.8 in)
1978	83.9 mm (3.3 in)
1979	105.5 mm (4.2 in)
1980	72.4 mm (2.9 in)
1981	95.3 mm (3.8 in)
1982	82.5 mm (3.2 in)
1983	153.7 mm (6.1 in)
1984	80.5 mm (3.2 in)
1985	97.8 mm (3.9 in)
1986	60.2 mm (2.4 in)
1988	125.8 mm (5.0 in)
1989	77.9 mm (3.1 in)
1990	79.8 mm (3.1 in)
1991	41.4 mm (1.6 in)
1992	136.1 mm (5.4 in)
1993	104.7 mm (4.1 in)
1994	60.5 mm (2.4 in)
1995	68.9 mm (2.7 in)
1996	98.0 mm (3.9 in)
1997	115.6 mm (4.6 in)
1998	53.3 mm (2.1 in)
1999	61.5 mm (2.4 in)
2000	69.1 mm (2.7 in)
2001	142.5 mm (5.6 in)
2002	63.6 mm (2.5 in)
2003	85.1 mm (3.4 in)
2004	76.4 mm (3.0 in)
2005	63.5 mm (2.5 in)
2006	61.5 mm (2.4 in)
2007	88.9 mm (3.5 in)
2008	82.7 mm (3.3 in)
2009	38.1 mm (1.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Guide Rock, 1900 to 2009. The record is 82 days in 1936, marked on the chart; the median year is 34 days.

Longest dry spell (CDD) at Guide Rock by year
Year	Longest dry spell (CDD)
1900	33 days
1901	59 days
1902	25 days
1903	22 days
1904	50 days
1905	30 days
1906	56 days
1907	24 days
1908	30 days
1909	27 days
1910	52 days
1911	42 days
1912	49 days
1913	44 days
1914	54 days
1915	26 days
1916	23 days
1917	29 days
1918	26 days
1919	31 days
1920	20 days
1921	47 days
1922	30 days
1923	35 days
1924	30 days
1925	25 days
1926	21 days
1927	34 days
1928	32 days
1929	37 days
1931	20 days
1932	35 days
1933	38 days
1934	43 days
1935	39 days
1936	82 days
1937	48 days
1938	57 days
1939	52 days
1940	22 days
1941	22 days
1942	38 days
1943	26 days
1944	22 days
1945	37 days
1946	45 days
1947	24 days
1948	22 days
1949	59 days
1950	52 days
1951	28 days
1952	63 days
1953	27 days
1954	39 days
1955	30 days
1956	49 days
1957	31 days
1958	56 days
1959	56 days
1960	28 days
1961	25 days
1962	26 days
1963	42 days
1964	34 days
1965	52 days
1966	63 days
1967	46 days
1968	32 days
1969	34 days
1970	50 days
1971	27 days
1972	36 days
1973	30 days
1974	57 days
1975	23 days
1976	34 days
1977	39 days
1978	23 days
1979	38 days
1980	22 days
1981	30 days
1982	24 days
1983	17 days
1984	33 days
1985	23 days
1986	33 days
1988	44 days
1989	48 days
1990	29 days
1991	33 days
1992	29 days
1993	26 days
1994	43 days
1995	36 days
1996	58 days
1997	34 days
1998	51 days
1999	55 days
2000	28 days
2001	39 days
2002	47 days
2003	21 days
2004	30 days
2005	35 days
2006	56 days
2007	34 days
2008	52 days
2009	55 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.

Rainfall Return Levels

95 years, 1901 to 2008

A day with at least 57.4 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 162.9 mm (6.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Guide Rock: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	57.4 mm (2.3 in)
5 years	79.5 mm (3.1 in)
10 years	96.3 mm (3.8 in)
25 years	120.4 mm (4.7 in)
50 years	140.6 mm (5.5 in)
100 years	162.9 mm (6.4 in)	Longer than the 95 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, 95 years of values from 1901 to 2008.

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: 168.9 mm (6.6 in) in 1950; 152.4 mm (6.0 in) in 1983; 147.3 mm (5.8 in) in 1903.

Download the Data

Data for Guide Rock standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Guide Rock 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).