Annual mean 20°C · wettest around May · prevailing wind S
Warmest
34.4 °C
Coldest
12.7 °C
Wettest
84%
Windiest
5.2 m/s
Prevailing
S
4.1 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 Round Rock over the whole year is 20°C. August is the hottest month, with highs of about 34°C; January is the coldest, with lows of about 6°C. Round Rock has no sharply defined rainy season: the chance of rain on a given day runs from 58% in November, the driest month, to 64% in May, the wettest. Winds in Round Rock are highest in February, averaging 3.8 m/s (14 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 Round Rock come in August, when the sky is typically 26% covered; April is the cloudiest month, at 51%.
Month by month Round Rock 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
13°C
6°C
9°C
59%
43%
3.3 m/s
24
1
57
February
15°C
8°C
12°C
59%
49%
3.8 m/s
40
5
55
March
21°C
13°C
18°C
59%
47%
3.8 m/s
63
14
61
April
24°C
16°C
22°C
63%
51%
3.7 m/s
65
31
43
May
28°C
20°C
28°C
64%
49%
3.4 m/s
37
53
16
June
32°C
24°C
33°C
60%
37%
3.1 m/s
5
41
1
July
34°C
25°C
35°C
60%
29%
3.1 m/s
2
26
0
August
34°C
24°C
35°C
63%
26%
2.7 m/s
2
22
0
September
31°C
21°C
31°C
61%
33%
2.5 m/s
18
47
6
October
26°C
16°C
25°C
61%
35%
2.8 m/s
41
50
25
November
19°C
11°C
17°C
58%
46%
2.9 m/s
54
14
57
December
16°C
9°C
13°C
60%
44%
3.1 m/s
39
5
61
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 Round Rock weather by season
Year round, Round Rock has days of about 13°C at their warmest in January, its coolest month, and 34°C in August, its warmest; the coolest hours of the day run from 6°C to 25°C through the year, and the average temperature over the year is 20°C around the clock. Rain is most likely around May and least likely around November. 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.
Round Rock weather in winterDecember to February
High 15°CLow 7°CRain 59%
Winter in Round Rock has typical daily highs of about 15°C and lows of about 7°C, with a 59% chance of rain on a given day.
Round Rock weather in springMarch to May
High 24°CLow 16°CRain 62%
Spring in Round Rock has typical daily highs of about 24°C and lows of about 16°C, with a 62% chance of rain on a given day.
Round Rock weather in summerJune to August
High 33°CLow 24°CRain 61%
Summer in Round Rock has typical daily highs of about 33°C and lows of about 24°C, with a 61% chance of rain on a given day.
Round Rock weather in autumnSeptember to November
High 25°CLow 16°CRain 60%
Autumn in Round Rock has typical daily highs of about 25°C and lows of about 16°C, with a 60% chance of rain on a given day.
When is the rainy season in Round Rock?
Round Rock has no sharply defined rainy season: the chance of rain on a given day runs from 58% in November, the driest month, to 64% in May, the wettest.
What time of year is Round Rock windiest?
Winds in Round Rock are highest in February, averaging 3.8 m/s (14 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 Round Rock year round?
The average temperature in Round Rock over the whole year is 20°C. August is the hottest month, with highs of about 34°C; January is the coldest, with lows of about 6°C.