Annual mean 19°C · wettest around May · prevailing wind S
Warmest
33.5 °C
Coldest
10.4 °C
Wettest
70%
Windiest
5.6 m/s
Prevailing
S
4.4 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 Rockwall over the whole year is 19°C. August is the hottest month, with highs of about 33°C; January is the coldest, with lows of about 4°C. Rockwall has no sharply defined rainy season: the chance of rain on a given day runs from 45% in July, the driest month, to 57% in May, the wettest. Winds in Rockwall are highest in March, averaging 4.1 m/s (15 km/h), and lightest in September, at 2.5 m/s (9 km/h). The prevailing wind is from the S. The clearest skies in Rockwall come in August, when the sky is typically 23% covered; February is the cloudiest month, at 47%.
Month by month Rockwall 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
11°C
4°C
6°C
50%
39%
3.5 m/s
11
0
46
February
13°C
7°C
9°C
49%
47%
3.9 m/s
27
1
51
March
19°C
11°C
15°C
51%
41%
4.1 m/s
50
5
67
April
22°C
15°C
19°C
54%
45%
4.0 m/s
67
15
60
May
26°C
20°C
26°C
57%
43%
3.6 m/s
52
50
24
June
31°C
24°C
32°C
48%
31%
3.3 m/s
11
50
2
July
33°C
25°C
35°C
45%
24%
3.3 m/s
2
31
0
August
33°C
25°C
35°C
48%
23%
2.9 m/s
3
30
0
September
30°C
21°C
31°C
48%
28%
2.5 m/s
23
51
8
October
24°C
15°C
22°C
51%
29%
3.1 m/s
53
41
37
November
18°C
10°C
15°C
46%
37%
3.1 m/s
49
5
67
December
14°C
7°C
10°C
49%
42%
3.3 m/s
25
1
57
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 Rockwall weather by season
Year round, Rockwall has days of about 11°C at their warmest in January, its coolest month, and 33°C in August, its warmest; the coolest hours of the day run from 4°C to 25°C through the year, and the average temperature over the year is 19°C around the clock. Rain is most likely around May and least likely around July. 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.
Rockwall weather in winterDecember to February
High 13°CLow 6°CRain 49%
Winter in Rockwall has typical daily highs of about 13°C and lows of about 6°C, with a 49% chance of rain on a given day.
Rockwall weather in springMarch to May
High 22°CLow 15°CRain 54%
Spring in Rockwall has typical daily highs of about 22°C and lows of about 15°C, with a 54% chance of rain on a given day.
Rockwall weather in summerJune to August
High 32°CLow 25°CRain 47%
Summer in Rockwall has typical daily highs of about 32°C and lows of about 25°C, with a 47% chance of rain on a given day.
Rockwall weather in autumnSeptember to November
High 24°CLow 16°CRain 49%
Autumn in Rockwall has typical daily highs of about 24°C and lows of about 16°C, with a 49% chance of rain on a given day.
When is the rainy season in Rockwall?
Rockwall has no sharply defined rainy season: the chance of rain on a given day runs from 45% in July, the driest month, to 57% in May, the wettest.
What time of year is Rockwall windiest?
Winds in Rockwall are highest in March, averaging 4.1 m/s (15 km/h), and lightest in September, at 2.5 m/s (9 km/h). The prevailing wind is from the S.
What is the average temperature in Rockwall year round?
The average temperature in Rockwall over the whole year is 19°C. August is the hottest month, with highs of about 33°C; January is the coldest, with lows of about 4°C.