As of 17:10 CDT

McKinney, TX weather in May

101°

McKinney, Saturday, 8 August, 17:10

Partly cloudy. Feels like 110°. High 101°, low 76°.

Pressure29.94 inHg

Wind7 mph SE

Humidity37%

Visibility6.2 mi

Dew point70°

See detailed hourly forecast

In May, McKinney, TX averages a high of 80.9° and a low of 64.4°. About 6.2 inches of precipitation fall over the month (11 wet days). The record high is 98.6° (2025) and the record low 42.8° (2013). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	76.5°	59.9°	40%	90° (2003)	45.7° (2017)
2	76.5°	59.4°	50%	88.2° (1987)	44.8° (2013)
3	75.2°	58.8°	43%	89.6° (2012)	42.8° (2013)
4	77.4°	59°	33%	92.8° (2014)	43.2° (2013)
5	78.4°	61°	38%	92.3° (2023)	49.1° (2013)
6	79.9°	62.4°	35%	93° (1998)	48.2° (2013)
7	80.1°	62.6°	38%	89.2° (2018)	48.6° (1992)
8	80.2°	63.5°	42%	90.9° (2022)	50.9° (1960)
9	79.5°	63.3°	43%	92.3° (2022)	50.2° (1969)
10	79.5°	63°	32%	93° (1963)	49.3° (2019)
11	79.3°	63.3°	33%	96.6° (1967)	47.7° (1981)
12	79.9°	63.9°	43%	92.7° (1978)	45.5° (1960)
13	80.2°	63.7°	30%	94.3° (2025)	48.9° (1979)
14	80.2°	63.5°	35%	98.6° (2025)	51.6° (2002)
15	80.8°	63.7°	42%	95.5° (2022)	49.8° (2014)
16	80.8°	64.2°	33%	89.8° (1996)	50.9° (1983)
17	81.5°	64.6°	30%	94.6° (2022)	53.8° (2011)
18	81.9°	64.9°	25%	93.6° (2022)	51.4° (1976)
19	82°	65.1°	28%	95.4° (2022)	51.3° (2002)
20	81.7°	65.3°	40%	95.5° (2022)	51.4° (1968)
21	81.5°	65.3°	38%	93.6° (2005)	55° (1967)
22	82°	66°	27%	95.5° (2005)	52.2° (2001)
23	83.3°	67.8°	33%	94.5° (1996)	53.1° (1963)
24	83.3°	67.8°	40%	93.7° (2025)	54.3° (2017)
25	83.7°	67.6°	47%	94.3° (2025)	54° (1979)
26	84°	67.6°	32%	94.6° (2024)	56.8° (1966)
27	83.5°	67.6°	45%	95° (2018)	53.8° (1961)
28	83.5°	67.5°	38%	94.8° (2011)	55.8° (1976)
29	84°	68°	38%	94.5° (2018)	54.9° (1984)
30	84.4°	68.4°	40%	98.6° (1985)	53.4° (1984)
31	84.4°	68.4°	33%	97.2° (2018)	55.4° (1983)