BOULDER, CO

Maximum of Maximum Temperature (Degrees Fahrenheit)

(050848)

File last updated on April 17, 2024
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.

YEAR(S)	JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC		ANN
1893	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	78.00		66.00	a	66.00	b	-----	z
1894	65.00	h	51.00	g	70.00	a	81.00	b	-----	z	-----	z	89.00	c	87.00		-----	z	-----	z	-----	z	63.00		-----	z
1895	54.00	c	58.00	c	75.00	b	76.00		86.00	b	85.00		85.00	u	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1896	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1897	-----	z	-----	z	-----	z	-----	z	78.00	a	85.00		90.00	a	87.00		85.00	b	77.00	b	73.00	d	65.00	c	-----	z
1898	67.00		63.00	a	62.00	b	78.00		82.00	a	95.00		93.00		93.00		85.00	a	81.00	a	72.00	a	60.00		95.00	g
1899	56.00		55.00		68.00		78.00		82.00		95.00		93.00		92.00		93.00		87.00		76.00		60.00		95.00
1900	63.00		60.00	a	79.00		72.00		83.00		91.00		95.00		93.00		88.00		83.00		76.00		65.00		95.00	a
1901	69.00		68.00		75.00		79.00		81.00		95.00		94.00		95.00		86.00		80.00	a	72.00	a	65.00	a	95.00	c
1902	65.00		65.00		66.00		80.00		82.00		94.00		97.00		96.00		92.00		78.00	a	73.00		68.00	b	97.00	c
1903	67.00	d	54.00		68.00	b	75.00	a	79.00	a	88.00		92.00		94.00		93.00		83.00	a	75.00		67.00		94.00	i
1904	63.00		72.00	a	69.00	b	77.00		83.00		85.00		90.00		91.00		92.00		82.00		72.00		68.00		92.00	c
1905	62.00	d	65.00		71.00		77.00		84.00	a	88.00		90.00		95.00		88.00		83.00		75.00		63.00	b	95.00	g
1906	70.00		68.00		67.00		79.00		82.00		87.00		88.00		89.00	a	85.00		82.00		73.00		68.00		89.00	a
1907	67.00		69.00		78.00		80.00		83.00		89.00		93.00		91.00		86.00		81.00		70.00	c	65.00	g	93.00	j
1908	61.00		70.00		77.00		80.00	c	86.00		88.00		92.00	a	89.00		91.00		80.00		72.00		58.00		92.00	d
1909	70.00	b	57.00		54.00		72.00		81.00		91.00	b	91.00		90.00		90.00		80.00		74.00		62.00		91.00	d
1910	65.00	b	58.00		90.00		85.00		84.00		90.00		-----	z	-----	z	90.00	a	88.00		75.00		63.00	b	-----	z
1911	68.00	b	67.00		70.00		79.00		84.00		94.00		90.00		98.00	a	92.00		83.00		68.00		-----	z	-----	z
1912	-----	z	-----	z	62.00	h	73.00		85.00	d	84.00	b	89.00		91.00		83.00	c	77.00	b	73.00	a	60.00	b	-----	z
1913	58.00	d	63.00		68.00		78.00		87.00	b	92.00		94.00	b	92.00	b	85.00	a	76.00		70.00		52.00		94.00	k
1914	63.00	c	61.00	a	70.00	f	74.00	f	79.00	c	90.00	c	91.00	c	92.00	a	87.00	a	77.00		75.00	a	54.00	a	-----	z
1915	60.00		65.00		64.00		75.00		84.00	a	89.00		92.00		89.00	a	87.00	a	81.00		77.00		70.00	b	92.00	e
1916	64.00	a	66.00		76.00		80.00	a	88.00		94.00	b	95.00		89.00		85.00	a	73.00		73.00	b	57.00		95.00	g
1917	56.00		62.00		72.00	a	75.00		81.00		99.00		97.00	a	98.00		85.00		80.00		72.00		68.00		99.00	b
1918	64.00		68.00		74.00		71.00		82.00		94.00		97.00		96.00		85.00	a	81.00	a	72.00		65.00		97.00	b
1919	62.00		63.00	a	72.00	a	83.00	a	82.00	a	96.00	a	96.00		95.00		87.00	a	78.00	e	68.00	j	67.00	l	-----	z
1920	65.00	b	66.00		69.00	a	67.00		87.00	a	91.00	b	96.00		92.00		89.00		83.00	b	74.00		64.00	a	96.00	i
1921	66.00		72.00		74.00		75.00	a	83.00		91.00		93.00		94.00		90.00	a	86.00		76.00	a	74.00		94.00	c
1922	60.00		64.00		69.00		73.00		83.00		97.00		98.00	a	95.00		92.00	b	88.00	a	63.00		62.00		98.00	d
1923	65.00		62.00		67.00		77.00		85.00		91.00		90.00		92.00		87.00	a	71.00		70.00		63.00		92.00	a
1924	61.00	a	69.00		58.00	a	76.00	a	81.00		96.00		94.00	a	96.00		84.00	a	76.00		73.00		69.00		96.00	e
1925	64.00	a	68.00		73.00		80.00		89.00		91.00		100.00	a	91.00	a	89.00		83.00	a	65.00	c	62.00	b	100.00	i
1926	58.00	b	63.00	b	67.00	a	75.00		86.00		91.00	a	95.00		96.00		90.00		86.00		68.00		71.00	a	96.00	g
1927	68.00		68.00		67.00		82.00		89.00		94.00		93.00		84.00		86.00		80.00		75.00	a	57.00	a	94.00	b
1928	67.00		62.00		72.00		75.00		87.00		90.00		95.00		94.00		90.00		85.00	a	73.00	a	70.00		95.00	b
1929	54.00		52.00		67.00		76.00		81.00	a	96.00		94.00		94.00		91.00		86.00		67.00		65.00		96.00	a
1930	58.00		70.00		68.00		83.00		86.00		95.00		97.00		92.00		88.00		79.00		70.00	a	61.00	a	97.00	b
1931	70.00		65.00	a	66.00		77.00		86.00		96.00		102.00	a	95.00		92.00		79.00		79.00		64.00		102.00	b
1932	58.00		75.00		68.00		82.00		88.00		89.00		95.00		95.00		89.00		84.00		70.00		62.00		95.00
1933	60.00		66.00		73.00		74.00		88.00		95.00		97.00		92.00		93.00		80.00		73.00		71.00	a	97.00	a
1934	63.00		74.00	a	69.00		79.00		88.00	a	97.00		100.00	a	96.00		90.00	b	87.00		75.00		71.00		100.00	e
1935	70.00		73.00		76.00		75.00		73.00		92.00		98.00		99.00		91.00		80.00		64.00		64.00		99.00
1936	64.00		70.00		70.00		77.00		85.00		98.00		97.00		102.00		88.00		80.00		-----	z	62.00		-----	z
1937	46.00		59.00		65.00		82.00		83.00		95.00		94.00		93.00		88.00		79.00		70.00		68.00		95.00
1938	66.00	a	64.00		70.00		84.00		88.00		88.00		95.00		100.00		85.00		81.00		65.00		60.00	a	100.00	b
1939	62.00		61.00	a	70.00	b	82.00		88.00		92.00		97.00		90.00		89.00		75.00		65.00	a	68.00		97.00	d
1940	53.00		71.00	b	77.00		78.00	a	87.00		94.00		96.00		92.00		88.00		78.00		70.00	c	71.00	c	96.00	i
1941	56.00		64.00	a	68.00	c	63.00	a	88.00		90.00		93.00		92.00	a	86.00	c	73.00		73.00		70.00		93.00	i
1942	57.00	a	54.00	a	65.00	b	80.00		90.00		88.00	a	95.00		90.00		86.00	b	81.00	b	75.00	b	58.00	b	95.00	m
1943	67.00	b	71.00	a	79.00	a	82.00	a	86.00		93.00		99.00		93.00		88.00	a	78.00		74.00		59.00	a	99.00	g
1944	67.00	a	64.00	a	62.00	a	67.00		84.00	a	90.00		91.00		95.00		86.00		80.00	a	67.00	a	63.00	a	95.00	g
1945	61.00		68.00	c	74.00	a	78.00	c	84.00	b	88.00		93.00		93.00		93.00	b	78.00	b	73.00	b	57.00	c	93.00	r
1946	60.00	b	65.00	b	79.00	a	85.00	b	76.00	e	98.00		94.00	a	92.00	d	87.00	b	81.00	c	71.00	c	66.00		98.00	y
1947	60.00	a	64.00	c	69.00	c	76.00	a	86.00	e	90.00	b	101.00	g	101.00	b	97.00	c	90.00	b	65.00	h	72.00	d	-----	z
1948	66.00	g	67.00	e	74.00	c	84.00	c	88.00	b	92.00	a	95.00	a	97.00		96.00		86.00		70.00		68.00		97.00	v
1949	58.00		70.00		72.00		85.00		87.00	a	94.00		96.00		98.00		92.00		83.00		75.00		67.00		98.00	a
1950	67.00		71.00		72.00		82.00		87.00		96.00		92.00		94.00		94.00		89.00		74.00	a	67.00		96.00	a
1951	65.00		69.00		70.00	a	77.00		91.00		92.00		100.00		95.00		91.00		82.00		67.00		67.00	a	100.00	b
1952	61.00		68.00		65.00		79.00		85.00		100.00		98.00		96.00	a	95.00		84.00		79.00		68.00		100.00	a
1953	72.00		66.00		76.00		81.00		84.00		99.00		101.00		96.00		93.00		90.00		76.00	a	59.00		101.00	a
1954	70.00		79.00		71.00	a	82.00		93.00		104.00		104.00		98.00		91.00		84.00	c	74.00		70.00		104.00	d
1955	59.00		59.00		70.00		83.00		88.00	a	97.00	a	99.00		94.00		97.00		83.00		73.00		71.00		99.00	b
1956	69.00		63.00		76.00		77.00		86.00		98.00		95.00		95.00		93.00		88.00		75.00		68.00		98.00
1957	58.00		68.00		68.00		72.00		79.00		96.00		98.00		96.00		91.00		83.00		68.00		74.00		98.00
1958	64.00		71.00		65.00		81.00		89.00		97.00		98.00		99.00		93.00		85.00		72.00		64.00		99.00
1959	63.00		60.00		67.00		83.00		84.00		92.00		95.00		97.00		97.00		82.00		68.00		66.00		97.00
1960	65.00		63.00		75.00		83.00		87.00		95.00		96.00		97.00		96.00		84.00		74.00		69.00		97.00
1961	70.00		71.00		69.00		79.00		88.00		93.00		93.00		96.00		85.00		82.00		68.00		62.00		96.00
1962	65.00		75.00		73.00		82.00		88.00		92.00		94.00		98.00		88.00		86.00		71.00		68.00		98.00
1963	62.00		75.00		78.00		80.00		88.00		95.00	a	98.00		96.00		89.00		86.00		72.00		65.00		98.00	a
1964	64.00		62.00		74.00		80.00		92.00		94.00		98.00		95.00		90.00		86.00		73.00		67.00	a	98.00	a
1965	65.00		69.00		71.00		81.00	a	84.00		89.00		94.00		97.00		83.00		86.00		73.00		75.00		97.00	a
1966	69.00		57.00		77.00		80.00		88.00	b	95.00		97.00	a	96.00		88.00		81.00		71.00		66.00		97.00	c
1967	65.00		70.00		78.00		81.00		90.00		88.00		96.00		94.00		87.00		88.00		74.00		58.00		96.00
1968	70.00		61.00		75.00		77.00		84.00		96.00		95.00		91.00		90.00		83.00		74.00		66.00		96.00
1969	67.00		67.00		76.00		78.00		91.00		94.00		97.00		101.00		91.00	a	82.00		69.00		67.00		101.00	a
1970	65.00		69.00		68.00		78.00		87.00	a	92.00	a	92.00	a	94.00	a	86.00		80.00		69.00		66.00		94.00	d
1971	68.00		65.00		79.00		76.00	a	80.00		97.00		100.00		93.00		91.00		82.00		73.00		64.00		100.00	a
1972	61.00		71.00		76.00		76.00		83.00		91.00		96.00		95.00		87.00		81.00		57.00		67.00		96.00
1973	64.00		57.00		63.00		74.00		83.00		94.00		100.00		96.00		84.00		82.00		75.00		65.00		100.00
1974	71.00		62.00		73.00		83.00		90.00		95.00		95.00		91.00		92.00		83.00		70.00		62.00		95.00
1975	64.00		63.00		69.00		82.00		83.00		94.00		95.00		99.00		90.00		83.00		72.00		69.00		99.00
1976	65.00		69.00		69.00		74.00		83.00		92.00		99.00		92.00		91.00		80.00		70.00		63.00		99.00
1977	56.00		68.00		69.00		78.00		86.00		95.00		97.00		88.00		92.00	a	78.00		69.00		66.00		97.00	a
1978	55.00		60.00		76.00		76.00		93.00	b	95.00	a	98.00	a	93.00		93.00	a	86.00		78.00		-----	z	-----	z
1979	52.00		74.00		68.00		81.00		-----	z	-----	z	98.00	a	101.00	a	-----	z	87.00	a	66.00	a	70.00		-----	z
1980	63.00		72.00		67.00		83.00		84.00		99.00		100.00		98.00		92.00		83.00		78.00		76.00		100.00
1981	71.00		74.00		70.00		84.00		86.00		96.00		97.00		94.00		86.00		77.00		75.00		69.00		97.00
1982	72.00		77.00		70.00		81.00		82.00		93.00		98.00	a	93.00		89.00	a	76.00		-----	z	69.00	a	-----	z
1983	-----	z	69.00	k	69.00		74.00	b	88.00	e	93.00	d	96.00	b	96.00		100.00	b	80.00	c	74.00	d	54.00	d	-----	z
1984	71.00	a	66.00		69.00	c	79.00		91.00	a	92.00		98.00		95.00		93.00	a	77.00		74.00		68.00		98.00	f
1985	59.00		64.00		78.00		85.00		86.00	b	98.00	g	97.00	b	96.00	e	87.00	e	77.00	d	71.00	e	64.00		-----	z
1986	71.00		75.00		79.00		83.00		85.00		94.00		95.00		97.00		84.00		76.00		69.00	a	56.00		97.00	a
1987	65.00		74.00		71.00	a	84.00		84.00		92.00		95.00		95.00		90.00		84.00		69.00		65.00		95.00	a
1988	67.00		66.00		75.00		86.00		89.00		98.00		96.00		97.00		93.00		80.00		75.00		65.00		98.00
1989	69.00		68.00		79.00		88.00		91.00		94.00		100.00		-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1990	-----	z	-----	z	-----	z	74.00		85.00		100.00		99.00		94.00		95.00		83.00	a	77.00		67.00		-----	z
1991	58.00		65.00		69.00		80.00		84.00		95.00		96.00		91.00		85.00		87.00	a	69.00		63.00		96.00	a
1992	63.00		69.00		65.00	a	87.00		87.00		90.00		98.00		94.00		89.00		84.00		67.00	a	61.00	a	98.00	c
1993	61.00		57.00		72.00	a	75.00		83.00		94.00		96.00		-----	z	90.00		85.00		66.00		63.00		-----	z
1994	61.00	b	62.00	a	76.00		87.00		91.00		101.00		98.00		96.00		90.00		77.00		73.00		67.00		101.00	c
1995	66.00		71.00	a	76.00		74.00		82.00		90.00		97.00		99.00		95.00		83.00		71.00		69.00		99.00	a
1996	69.00	a	70.00		70.00	a	82.00		93.00		89.00		94.00		99.00		91.00		87.00		73.00		68.00		99.00	b
1997	70.00		65.00		80.00		76.00		85.00	a	90.00		96.00		89.00		85.00		84.00		69.00		63.00		96.00	a
1998	66.00		62.00		76.00		79.00		85.00		93.00		100.00		93.00		94.00		78.00		72.00		68.00		100.00
1999	62.00		70.00		76.00		76.00		80.00		90.00		96.00		90.00		85.00		83.00		75.00	a	66.00		96.00	a
2000	64.00	c	66.00		73.00	a	79.00	b	95.00	a	96.00	a	98.00	a	97.00		93.00	a	84.00	a	56.00		58.00		98.00	k
2001	65.00		59.00		67.00		79.00	a	84.00		97.00	b	99.00		95.00		93.00		84.00		74.00		66.00		99.00	c
2002	69.00		74.00		70.00	a	80.00		90.00		97.00		101.00		100.00		92.00		77.00		70.00		65.00		101.00	a
2003	69.00		69.00		74.00		79.00		95.00		86.00		101.00		94.00		87.00		87.00		72.00		64.00		101.00
2004	61.00		67.00	a	77.00	a	78.00		87.00		95.00		96.00		92.00		90.00		75.00		74.00		63.00		96.00	b
2005	73.00		63.00		71.00		75.00		90.00		89.00		101.00		96.00		91.00		89.00		78.00		68.00	a	101.00	a
2006	69.00		74.00		71.00		83.00		92.00		100.00		100.00		94.00		86.00		84.00		77.00		70.00		100.00
2007	62.00		67.00		76.00		82.00		82.00		97.00		98.00		97.00		91.00		83.00		76.00		70.00		98.00
2008	64.00		65.00		73.00	a	80.00		82.00		90.00		98.00		99.00		86.00		81.00		78.00		67.00		99.00	a
2009	71.00		69.00		76.00		80.00		87.00		89.00		95.00		96.00		89.00		83.00		77.00		57.00		96.00
2010	61.00		49.00		79.00		76.00		91.00		94.00		98.00		95.00		94.00		81.00		76.00		66.00		98.00
2011	68.00		66.00		75.00		82.00	a	86.00		95.00		98.00		98.00		94.00		86.00		69.00		61.00		98.00	a
2012	69.00		62.00		81.00		87.00		89.00		102.00		100.00		96.00		94.00		85.00		73.00		71.00		102.00
2013	65.00		61.00		76.00		77.00		87.00		98.00		98.00		97.00		95.00		77.00		70.00		68.00		98.00
2014	63.00		65.00		72.00		76.00		85.00		94.00		97.00		92.00		93.00		83.00		73.00		65.00		97.00
2015	72.00		72.00		80.00		79.00		86.00		93.00		93.00		96.00		92.00		86.00		77.00		68.00		96.00
2016	63.00		73.00		72.00		78.00		80.00		99.00		99.00		95.00		92.00		84.00		80.00		67.00		99.00
2017	63.00		76.00		80.00		77.00		85.00		98.00		100.00		94.00		97.00		85.00		76.00		68.00		100.00
2018	69.00		66.00		72.00		81.00		87.00		98.00		97.00		94.00		94.00		85.00		65.00		63.00		98.00
2019	61.00		63.00		74.00		79.00		82.00		94.00		98.00		98.00		100.00		80.00		79.00		64.00		100.00
2020	65.00		75.00		69.00		83.00		87.00		93.00		100.00		98.00		99.00		86.00		79.00		65.00		100.00
2021	64.00		65.00		71.00		80.00		84.00		99.00		98.00		95.00		99.00		83.00		78.00		72.00		99.00
2022	63.00		66.00		78.00		85.00		87.00		99.00		100.00		95.00		97.00		82.00		71.00		62.00		100.00
2023	62.00		62.00		69.00		84.00		81.00		90.00		98.00		98.00		96.00		87.00		78.00		65.00		98.00
2024	63.00		66.00		68.00		80.00	o	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
Period of Record Statistics
MEAN	63.96		66.14		71.82		78.93		85.54		93.43		96.12		94.54		90.20		82.04		72.15		65.23		97.56
S.D.	4.87		5.53		5.10		4.19		3.76		3.86		3.09		3.21		3.89		3.81		4.18		4.47		2.58
SKEW	-0.61		-0.31		-0.07		-0.59		-0.08		-0.04		-0.36		-0.34		0.31		-0.28		-0.91		-0.42		-0.57
MAX	73.00		79.00		90.00		88.00		95.00		104.00		104.00		102.00		100.00		90.00		80.00		76.00		104.00
MIN	46.00		49.00		54.00		63.00		73.00		84.00		88.00		84.00		83.00		71.00		56.00		52.00		89.00
YRS	124		125		126		127		127		126		126		125		125		127		123		124		89