Annual mean 21°C · wettest around May · prevailing wind SE
Warmest
33.2 °C
Coldest
14.3 °C
Wettest
24%
Windiest
4.8 m/s
Prevailing
SE
3.8 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Tomball over the whole year is 21°C. August is the hottest month, with highs of about 33°C; January is the coldest, with lows of about 8°C. Tomball has no sharply defined rainy season: the chance of rain on a given day runs from 19% in March, the driest month, to 24% in May, the wettest. Winds in Tomball are highest in February, averaging 3.5 m/s (13 km/h), and lightest in September, at 2.2 m/s (8 km/h). The prevailing wind is from the SE. The clearest skies in Tomball come in August, when the sky is typically 33% covered; February is the cloudiest month, at 60%.
Month by month Tomball climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
15°C
8°C
11°C
23%
51%
3.1 m/s
35
3
64
February
18°C
11°C
15°C
21%
60%
3.5 m/s
53
12
59
March
22°C
15°C
20°C
19%
55%
3.5 m/s
70
24
59
April
25°C
17°C
23°C
20%
54%
3.5 m/s
68
40
41
May
29°C
22°C
29°C
24%
52%
3.2 m/s
32
62
10
June
31°C
24°C
34°C
23%
39%
2.7 m/s
5
34
1
July
32°C
25°C
35°C
22%
35%
2.4 m/s
3
17
1
August
33°C
25°C
36°C
22%
33%
2.3 m/s
3
15
0
September
31°C
23°C
33°C
22%
34%
2.2 m/s
14
41
3
October
27°C
18°C
26°C
20%
36%
2.5 m/s
39
53
25
November
21°C
13°C
19°C
21%
49%
2.5 m/s
59
25
56
December
17°C
11°C
15°C
22%
55%
2.8 m/s
48
11
65
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Tomball weather by season
Year round, Tomball has days of about 15°C at their warmest in January, its coolest month, and 33°C in August, its warmest; the coolest hours of the day run from 8°C to 25°C through the year, and the average temperature over the year is 21°C around the clock. Rain is most likely around May and least likely around March. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Tomball weather in winterDecember to February
High 17°CLow 10°CRain 22%
Winter in Tomball has typical daily highs of about 17°C and lows of about 10°C, with a 22% chance of rain on a given day.
Tomball weather in springMarch to May
High 25°CLow 18°CRain 21%
Spring in Tomball has typical daily highs of about 25°C and lows of about 18°C, with a 21% chance of rain on a given day.
Tomball weather in summerJune to August
High 32°CLow 25°CRain 22%
Summer in Tomball has typical daily highs of about 32°C and lows of about 25°C, with a 22% chance of rain on a given day.
Tomball weather in autumnSeptember to November
High 26°CLow 18°CRain 21%
Autumn in Tomball has typical daily highs of about 26°C and lows of about 18°C, with a 21% chance of rain on a given day.
When is the rainy season in Tomball?
Tomball has no sharply defined rainy season: the chance of rain on a given day runs from 19% in March, the driest month, to 24% in May, the wettest.
What time of year is Tomball windiest?
Winds in Tomball are highest in February, averaging 3.5 m/s (13 km/h), and lightest in September, at 2.2 m/s (8 km/h). The prevailing wind is from the SE.
What is the average temperature in Tomball year round?
The average temperature in Tomball over the whole year is 21°C. August is the hottest month, with highs of about 33°C; January is the coldest, with lows of about 8°C.