Denver Climate Records and Averages

Denver, Colorado possesses a semi-arid, continental climate with four distinct seasons. Denver is located on the western edge of the High Plains, just east of the foothills of the Southern Rocky Mountains. The weather of the city and surrounding area is influenced by the proximity of the Rocky Mountains to the west. While generally mild compared to the mountains to the west and plains further east, Denver's weather can be very unpredictable.

The season's first snowfall generally occurs around October 19, and the last snowfall is about April 27, averaging 58.6 inches per year. Denver records an annual average of sunshine during 69 percent of all possible daylight hours. Denver receives over 3,100 hours of sunshine a year, with over 300 days of sunshine.

Winters in Denver can vary from mild to cold, and although large amounts of snow can fall on the mountains just west of the city, the effects of the Rocky Mountains shield the city from precipitation for much of the season.

Summers in Denver are hot and dry, with little precipitation. The normal temperatures during the day are in the low to upper 90s, sometimes lower into the upper 80s on cool days. Approximately 50% of all days in July reach or exceed 90 F, but nighttime temperatures are usually significantly lower. Starting in mid-July, the monsoon brings tropical moisture into the city and with it come frequent short (and occasionally severe) late-afternoon thunderstorms. Despite this tropical moisture, humidity levels during the day generally remain low.

	Monthly Averages			Daily Extremes				Monthly Extremes				Max. Temp.		Min. Temp.
Temperatures in F	Max.	Min.	Avg	High	Date of daily extreme high	Low	Date of daily extreme low	Highest Avg	Year	Lowest Avg	Year	# Days >= 90 F	# Days <= 32 F	# Days <= 32 F	# Days <= 0 F
January	43.8	17.0	30.4	74	02/1997	-25	11/1963	40.3	1986	16.3	1949	0.0	6.3	29.5	3.0
February	46.9	20.4	33.6	76	05/1963	-25	01/1951	43.7	1954	22.3	1989	0.0	4.2	26.1	1.6
March	52.7	26.2	39.4	84	26/1971	-8	03/1960	47.1	1986	29.0	1965	0.0	2.8	24.2	0.4
April	61.3	34.3	47.8	90	30/1992	-2	02/1975	56.3	1981	41.0	1983	0.0	0.5	12.0	0.0
May	70.8	44.0	57.4	96	30/2003	22	02/1954	63.2	1994	50.0	1995	0.5	0.0	1.7	0.0
June	81.6	52.8	67.2	104	26/1994	30	02/1951	73.5	1994	60.6	1967	6.7	0.0	0.0	0.0
July	88.2	59.0	73.6	104	21/2005	43	07/1952	77.9	2003	68.9	1950	15.1	0.0	0.0	0.0
August	85.9	57.3	71.6	102	01/2002	41	23/1964	75.3	1995	67.2	2004	10.0	0.0	0.0	0.0
September	77.5	48.1	62.8	97	04/1960	17	29/1985	68.2	1981	55.6	1965	2.6	0.0	0.7	0.0
October	66.1	36.7	51.4	89	16/1991	3	13/1969	59.9	1950	38.9	1969	0.0	0.3	8.5	0.0
November	52.7	25.5	39.1	81	09/2006	-8	09/1950	48.6	1949	29.7	1985	0.0	2.4	23.8	0.4
December	45.0	18.3	31.6	75	27/1980	-25	22/1990	41.2	1980	17.4	1983	0.0	5.0	29.2	2.1

Annual	64.4	36.6	50.5	104	19940626	-25	19510201	54.0	1981	48.3	1951	34.9	21.5	155.7	7.5

Winter	45.2	18.5	31.9	76	19630205	-25	19510201	38.2	1981	25.5	1949	0.0	15.5	84.8	6.6
Spring	61.6	34.8	48.2	96	20030530	-8	19600303	52.8	1992	42.9	1983	0.5	3.3	37.9	0.5
Summer	85.2	56.4	70.8	104	19940626	30	19510602	74.1	1994	66.0	1967	31.8	0.0	0.0	0.0
Fall	65.5	36.8	51.1	97	19600904	-8	19501109	55.5	1981	46.4	1985	2.6	2.8	33.0	0.4

												Total Snowfall
	Avg.	High	Year	Low	Year	1 Day Max.		>= 0.01 in.	>= 0.10 in.	>= 0.50 in.	>= 1.00 in.	Mean	High	Year
	in.	in.	-	in.	-	in.	dd/yyyy or yyyymmdd	# Days	# Days	# Days	# Days	in.	in.	-
January	0.50	1.33	1962	0.00	2003	0.92	08/1962	6	1	0	0	7.3	24.3	1992
February	0.56	1.66	1960	0.01	1970	1.01	19/1953	6	2	0	0	7.0	18.3	1960
March	1.25	4.81	2003	0.18	2004	3.10	19/2003	8	4	0	0	12.2	35.2	2003
April	1.79	5.35	1999	0.03	1963	3.25	13/1967	9	4	1	0	8.3	25.5	1957
May	2.40	7.31	1957	0.06	1974	3.27	06/1973	10	5	1	1	1.7	13.7	1950
June	1.70	4.69	1967	0.03	2006	3.16	11/1970	9	4	1	0	0.0	0.8	1951
July	1.96	6.99	1998	0.15	2008	3.83	19/1997	9	4	1	0	-	-	-
August	1.73	5.85	1979	0.06	1960	3.81	19/2004	9	4	1	0	0.0	1.3	1951
September	1.12	4.67	1961	0.01	1956	1.44	28/1973	6	3	1	0	1.5	17.2	1971
October	1.01	4.17	1969	0.05	1962	1.58	18/1960	5	3	1	0	4.1	31.2	1969
November	0.81	2.67	1991	0.01	1949	0.95	20/1979	6	3	0	0	8.6	29.6	1991
December	0.58	2.84	1973	0.00	2002	2.00	24/1982	5	2	0	0	7.8	30.8	1973

Annual	15.40	23.84	1997	7.51	1954	3.83	1997/07/19	87	38	7	2	58.6	112.0	1959

Winter	1.64	4.69	1974	0.43	1970	2.00	1982/12/24	17	5	0	0	22.2	50.8	2007
Spring	5.44	12.53	1957	1.97	1954	3.27	1973/05/06	27	13	3	1	22.2	49.4	1983
Summer	5.38	12.78	1997	1.52	1959	3.83	1997/07/19	26	12	3	1	0.0	2.1	1951
Fall	2.94	6.46	1969	0.63	2003	1.58	1960/10/18	17	8	1	0	14.2	36.9	1991

Winter = Dec, Jan, and Feb		Spring = Mar, Apr, and May
Summer = Jun, Jul, and Aug.		Fall = Sep, Oct, and Nov