Austin Climate Records and Averages

The climate of Austin, Texas is humid subtropical with hot summers and relatively mild winters. The city is located at the junction of the Colorado River and the Balcones escarpment, separating the Texas Hill Country from the Blackland Prairies to the east. Mild weather prevails during most of the winter. Sub-freezing temperatures occur on average about 25 days each year. North winds with strong cold fronts block any moderating affects from the Gulf of Mexico, and occasionally usher in frigid conditions to central Texas.

Daytime temperatures in summer are hot, with highs over 90 about 80 percent or more of the time. Cool fronts may affect the area and drop overnight lows to the 50s on some occasions. In these cases, warm winds quickly return, pushing lows to the 70s in a few days. In very hot summers, the continental regime of West and North Texas can have an impact of keeping daytime highs near and above 100, especially with hot west and southwest winds. Most of the time, the moderating affects of the Gulf of Mexico limit daytime highs; however, they also add to the discomfort with higher humidity.

Precipitation is fairly evenly distributed throughout the year with heaviest amounts occurring in May, September and sometimes in October and November. This comes from either tropical cyclones that migrate out of the Gulf of Mexico, or stalled out cool fronts. Precipitation from April through September usually results from thunderstorms, with large amounts of rain falling within short periods of time. Rainfall amounts have exceeded 5 inches in several hours, causing flash floods. While thunderstorms and heavy rains may occur in all months of the year, most of the winter precipitation consists of light rain. Although snow is not a significant source of moisture, it does visit the area during some winters.

	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	60.4	39.8	50.1	90	30/1971	-2	31/1949	59.1	1952	38.6	1940	0.0	0.5	7.2	0.0
February	64.5	43.2	54.0	99	21/1996	7	02/1951	62.3	1999	45.0	1978	0.2	0.2	3.9	0.0
March	71.9	49.6	60.8	98	28/1971	18	03/1943	67.3	1967	53.4	1965	0.6	0.0	1.1	0.0
April	79.2	57.9	68.6	99	17/2006	31	13/1940	75.9	1967	62.8	1931	1.7	0.0	0.0	0.0
May	85.6	65.5	75.6	102	07/1998	43	04/1954	80.6	1996	71.4	1979	8.7	0.0	0.0	0.0
June	91.8	71.6	81.7	108	14/1998	53	03/1970	87.4	2008	76.6	1940	22.0	0.0	0.0	0.0
July	95.2	73.9	84.6	109	26/1954	64	16/1967	89.5	2009	80.2	1976	28.1	0.0	0.0	0.0
August	95.9	73.8	84.9	110	08/2003	61	03/1936	89.1	2009	81.2	1971	28.4	0.0	0.0	0.0
September	89.8	68.9	79.3	107	25/2005	41	27/1942	84.4	2005	72.2	1974	18.2	0.0	0.0	0.0
October	81.6	59.5	70.6	98	02/1938	30	31/1993	77.2	1931	61.3	1976	5.0	0.0	0.0	0.0
November	70.4	48.9	59.7	91	13/1951	20	29/1976	65.1	1973	51.6	1976	0.1	0.0	1.4	0.0
December	62.8	41.7	52.2	90	25/1955	4	23/1989	58.9	1933	41.9	1983	0.0	0.2	4.9	0.0

Annual	79.1	57.9	68.5	110	2003/08/08	-2	1949/01/31	71.6	2006	65.4	1940	112.9	0.9	18.6	0.0

Winter	62.6	41.6	52.1	99	1996/02/21	-2	1949/01/31	57.7	2000	46.2	1979	0.2	0.9	16.0	0.0
Spring	78.9	57.7	68.3	102	1998/05/07	18	1943/03/03	72.8	1967	63.4	1931	10.9	0.0	1.2	0.0
Summer	94.3	73.1	83.7	110	2003/08/08	53	1970/06/03	88.4	2009	80.2	1940	78.5	0.0	0.0	0.0
Fall	80.6	59.1	69.8	107	2005/09/25	20	1976/11/29	74.9	1931	63.7	1976	23.3	0.0	1.4	0.0

												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	2.18	9.40	1934	0.04	1971	4.41	09/1991	8	4	1	0	0.4	7.5	1985
February	2.32	6.56	1992	0.03	1999	3.05	21/1958	8	4	2	1	0.3	6.0	1966
March	2.24	7.54	2006	0.00	1972	3.26	28/2006	8	4	1	1	0.0	2.0	1965
April	2.87	9.93	1957	0.06	1984	3.56	18/1976	7	4	2	1	-	-	-
May	4.22	10.06	1935	0.73	1998	5.55	21/1979	8	5	3	1	-	-	-
June	3.55	14.96	1981	0.00	1967	8.00	07/1941	7	5	2	1	-	-	-
July	2.10	11.77	1936	0.00	1962	5.20	16/1936	5	3	1	1	-	-	-
August	2.24	9.48	2001	0.00	1952	5.68	09/1994	5	3	1	1	-	-	-
September	3.40	13.20	2010	0.00	1931	7.04	07/2010	7	4	2	1	-	-	-
October	3.39	12.39	1998	0.00	1952	6.24	17/1998	7	4	2	1	-	-	-
November	2.53	14.10	2004	0.00	1970	7.55	15/2001	7	4	2	1	0.2	10.7	1937
December	2.41	14.16	1991	0.00	1950	4.21	20/1991	8	4	1	1	0.0	0.1	2008

Annual	33.46	52.27	2004	11.42	1954	8.00	1941/06/07	84	50	21	10	0.9	10.7	1937

Winter	6.92	25.55	1992	0.84	1971	4.41	1991/01/09	23	12	4	2	0.7	8.7	1985
Spring	9.33	21.89	1957	1.80	1961	5.55	1979/05/21	23	14	6	3	0.0	2.0	1965
Summer	7.89	20.23	1961	1.16	1934	8.00	1941/06/07	17	11	5	2	-	-	-
Fall	9.32	23.19	1998	1.17	1931	7.55	2001/11/15	20	13	6	3	0.2	10.7	1937

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