As of 09:08 CDT

McKinney, TX weather in September

83°

McKinney, Sunday, 9 August, 09:08

Clear. Feels like 89°. High 99°, low 77°.

Pressure30.03 inHg

Wind3 mph S

Humidity73%

Visibility6.2 mi

Dew point73°

See detailed hourly forecast

In September, McKinney, TX averages a high of 86° and a low of 69.6°. About 3.2 inches of precipitation fall over the month (7 wet days). The record high is 107.1° (2000) and the record low 46.4° (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%	103.6° (2000)	65.8° (1986)
2	89.8°	74.1°	33%	104.5° (2000)	63.9° (1974)
3	89.6°	73.8°	32%	104.7° (2000)	60.1° (1974)
4	89.8°	73.8°	27%	107.1° (2000)	57.6° (1974)
5	89.2°	73°	22%	101.3° (2012)	54° (1974)
6	89.2°	72.5°	22%	101.5° (2023)	54.7° (1974)
7	89.2°	72.7°	20%	106.2° (2023)	59.9° (1974)
8	88.3°	72.5°	22%	104.5° (2023)	61° (2017)
9	87.6°	71.6°	28%	96.4° (1985)	59.7° (2024)
10	86.9°	70.5°	25%	99.7° (2014)	58.8° (2020)
11	87.1°	70.9°	28%	98.8° (2000)	59.5° (1968)
12	86.7°	70.3°	30%	99° (2011)	60.1° (1968)
13	86.5°	70.7°	27%	106° (2011)	59.2° (2014)
14	85.5°	70.7°	25%	99.7° (1965)	57.9° (1961)
15	85.3°	70°	33%	98.4° (1965)	55.4° (1993)
16	85.6°	70.2°	35%	100.9° (1980)	52.5° (1993)
17	86.2°	69.8°	18%	95.4° (1997)	55° (1961)
18	86.4°	70.3°	25%	95.4° (2005)	52.3° (1981)
19	85.3°	69.8°	23%	96.8° (1960)	51.8° (1981)
20	85.6°	68.9°	22%	98.8° (2021)	51.4° (1971)
21	84.6°	68.5°	25%	95.7° (2005)	52° (1983)
22	83.8°	67.6°	17%	96.8° (2005)	50° (1983)
23	83.3°	66.9°	23%	96.4° (2000)	48.9° (1995)
24	82.8°	66.2°	27%	95.7° (1977)	50.4° (1989)
25	82.6°	65.7°	23%	98.6° (1977)	48.4° (1989)
26	82.6°	65.1°	18%	98.8° (1977)	49.5° (2000)
27	83.3°	65.1°	15%	100° (1977)	54.1° (2000)
28	83.1°	65.3°	12%	98.8° (2005)	49.6° (1996)
29	82.2°	64°	13%	98.4° (2011)	48.4° (1967)
30	82.8°	63.9°	7%	96.8° (1977)	46.4° (1984)