Monthly Historical AveragesMcKinney, TX
Average Temperature
High
28°
Feels 29
Low
17°
Feels 17
Average Precipitation
10 Days
114.3mm
0cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastMonday, May 18, 2026
Day
31°Feels 33
Wind
36 km/h S
Gust
54 km/h
Humidity
48%
P.O.P
40%
Rain
<1 mm
Night
24°Feels 25
Wind
31 km/h S
Gust
47 km/h
Humidity
93%
P.O.P
60%
Rain
~5 mm
Historical AveragesMay 18
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity