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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Mount Vernon, TX
Content continues below
May
Average Temperature
High
27°
Feels 28
Low
17°
Feels 17
Average Precipitation
10 Days
Rain amount
104.2mm
Snow amount
0cm
Content continues below
Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
31°
19
29°
20
26°
21
26°
22
27°
23
27°
24
24°
25
26°
26
27°
27
26°
28
26°
29
26°
30
28°
31
30°
Forecast
Monday, May 18, 2026
Day
31°
Feels 33
Wind
32 km/h S
Gust
48 km/h
Humidity
55%
P.O.P
30%
Night
22°
Feels 22
Wind
30 km/h S
Gust
45 km/h
Humidity
94%
P.O.P
60%
Rain
~1 mm
Historical Averages
May 18
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.