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7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Tomball, TX
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Content continues below
Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
18°
2
23°
3
24°
4
26°
5
29°
6
28°
7
25°
8
27°
9
27°
10
29°
11
30°
12
30°
13
30°
14
31°
15
30°
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Forecast
Friday, May 1, 2026
Day
18°
Feels 18
Wind
22 km/h NE
Gust
34 km/h
Humidity
92%
P.O.P
100%
Rain
50-75 mm
Night
11°
Feels 9
Wind
24 km/h N
Gust
36 km/h
Humidity
96%
P.O.P
100%
Rain
~5 mm
Historical Averages
May 1
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 32
Low
19°
Feels 20
Average Precipitation
9 Days
Rain amount
119.3mm
Snow amount
0cm