As of 00:43 CDT

Richardson, TX weather in September

80°

Richardson, Sunday, 9 August, 00:43

Partly cloudy. Feels like 83°. High 100°, low 79°.

Pressure30.00 inHg

Wind5 mph SE

Humidity66%

Visibility6.2 mi

Dew point68°

See detailed hourly forecast

In September, Richardson, TX averages a high of 86.1° and a low of 69.8°. About 3.2 inches of precipitation fall over the month (7 wet days). The record high is 106.5° (2000) and the record low 46.6° (1984). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	90.1°	74.5°	28%	102.9° (2000)	66.7° (1967)
2	89.6°	74.1°	37%	104° (2000)	64.2° (1987)
3	89.4°	73.8°	32%	104° (2000)	60.3° (1974)
4	89.6°	73.9°	28%	106.5° (2000)	57.4° (1974)
5	89.2°	73.2°	20%	101.5° (2023)	54.7° (1974)
6	89.1°	72.5°	18%	102° (2023)	55° (1974)
7	89.2°	72.5°	18%	106.3° (2023)	60.1° (1974)
8	88.3°	72.5°	23%	104.7° (2023)	60.4° (2017)
9	87.6°	71.8°	27%	95.9° (1984)	60.3° (2004)
10	86.9°	70.7°	25%	99.3° (2014)	58.5° (2020)
11	87.1°	71.1°	25%	98.2° (2000)	59.5° (1968)
12	86.7°	70.5°	28%	99° (2011)	60.4° (1968)
13	86.5°	70.9°	27%	105.6° (2011)	59.4° (2014)
14	85.6°	70.9°	27%	99.3° (1965)	58.1° (1961)
15	85.5°	70.3°	33%	97.9° (1965)	55.6° (1993)
16	85.6°	70.3°	33%	100.4° (1980)	53.4° (1993)
17	86.2°	70°	18%	95.5° (2025)	55.4° (1961)
18	86.5°	70.5°	20%	96.1° (2005)	52.7° (1981)
19	85.3°	69.8°	23%	96.3° (1960)	51.8° (1981)
20	85.6°	69.1°	22%	99.7° (2021)	52.2° (1971)
21	84.4°	68.7°	27%	96.3° (2005)	52° (1983)
22	84°	67.8°	20%	97.3° (2005)	50° (1983)
23	83.5°	67.1°	22%	96.8° (2005)	49.6° (1995)
24	82.9°	66.4°	25%	96.3° (2022)	51.1° (1989)
25	82.8°	65.8°	27%	99° (2005)	48.7° (1989)
26	82.8°	65.3°	20%	98.2° (1977)	50° (2000)
27	83.3°	65.3°	12%	99.7° (1977)	54.3° (2000)
28	83.3°	65.5°	17%	99° (2005)	50° (1967)
29	82.2°	64.2°	17%	98.6° (2011)	48.7° (1967)
30	82.6°	64°	8%	96.4° (1977)	46.6° (1984)