The Weather Network
Weather
Maps
News
Video
|
Welcome
Monthly
⋮
Current
Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Downtown, San Marcos, TX
Content continues below
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
32°
11
27°
12
29°
13
31°
14
32°
15
32°
16
31°
17
31°
18
31°
19
29°
20
29°
21
29°
22
29°
23
28°
24
28°
25
26
27
28
29
30
31
Forecast
Sunday, May 10, 2026
Day
32°
Feels 34
Wind
18 km/h SE
Gust
27 km/h
Humidity
48%
P.O.P
10%
Night
20°
Feels 20
Wind
17 km/h NE
Gust
26 km/h
Humidity
95%
P.O.P
90%
Rain
20-25 mm
Historical Averages
May 10
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.
May
Average Temperature
High
30°
Feels 31
Low
19°
Feels 19
Average Precipitation
10 Days
Rain amount
114.7mm
Snow amount
0cm