As of 05:17 CDT

Round Rock, TX weather in September

78°

Round Rock, Sunday, 9 August, 05:17

Partly cloudy. Feels like 80°. High 98°, low 77°.

Pressure30.00 inHg

Wind4 mph S

Humidity83%

Visibility6.2 mi

Dew point72°

See detailed hourly forecast

In September, Round Rock, TX averages a high of 87.7° and a low of 70.5°. About 2.9 inches of precipitation fall over the month (8 wet days). The record high is 106.9° (2000) and the record low 50.4° (1984). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	91.6°	74.3°	25%	103.1° (2000)	67.3° (2004)
2	91.4°	74.5°	32%	102.9° (2000)	65.5° (1987)
3	91°	74.3°	33%	103.1° (2000)	62.1° (1974)
4	91°	74.1°	30%	106.9° (2000)	61.7° (1974)
5	90.7°	73°	25%	106.5° (2000)	55.9° (1974)
6	90°	72.9°	27%	101.1° (2023)	55.6° (1974)
7	89.8°	72.5°	25%	102.7° (2023)	59.7° (2017)
8	89.6°	72.5°	25%	104.9° (2023)	59° (2017)
9	88.9°	72.1°	35%	100.6° (2023)	59° (2024)
10	88.3°	71.6°	37%	97.5° (2023)	57.2° (2020)
11	88°	71.4°	32%	99.7° (2011)	59.2° (1968)
12	88.3°	71.4°	22%	101.1° (2011)	59.4° (1968)
13	87.4°	71.6°	38%	102° (2011)	61.9° (1969)
14	87.1°	71.8°	30%	99.5° (2011)	61.3° (1961)
15	87.4°	71.2°	33%	96.8° (1965)	57.7° (1989)
16	87.3°	71.2°	32%	98.2° (1965)	58.3° (1989)
17	87.8°	70.7°	23%	96.3° (1997)	56.8° (1961)
18	88°	71.2°	28%	95.7° (2022)	53.8° (1981)
19	87.4°	70.7°	28%	95.5° (2016)	52.3° (1981)
20	86.9°	70°	30%	98.4° (2021)	54.7° (1971)
21	86.2°	70°	37%	96.6° (2005)	55.2° (1983)
22	85.6°	68.5°	25%	97.7° (2005)	50.5° (1983)
23	85.5°	68.4°	20%	97.2° (2022)	52° (1995)
24	85.5°	67.6°	23%	99.1° (2023)	55.2° (1989)
25	85.5°	67.5°	22%	103.8° (2005)	53.1° (1989)
26	85.5°	67.1°	20%	104.9° (2005)	52.3° (2000)
27	85.1°	66.6°	23%	99.9° (2005)	52.7° (2000)
28	85.1°	66.9°	22%	104° (2005)	51.8° (1967)
29	84.6°	65.1°	20%	97.9° (2011)	50.7° (1967)
30	84.2°	64.4°	17%	95.4° (1977)	50.4° (1984)