Weatheo

Round Rock Weather by Month

Average temperatures, rainfall and humidity for Round Rock, United States, month by month, built from OpenWeather’s historical records. Use it to see what a typical Round Rock month looks like before you travel — then check the live Round Rock forecast for the days ahead.

Warmest month

August

36°C average high

Coolest month

January

6°C average low

Wettest month

May

126 mm of rain

Driest month

July

32 mm of rain

Average temperature and rainfall in Round Rock by month

Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.

MonthAvg highAvg lowRecord low / highRainfallHumidityWind
January17°C6°C-9°C / 31°C
42 mm
65%11 km/h
February20°C8°C-14°C / 32°C
36 mm
67%13 km/h
March24°C12°C-6°C / 36°C
66 mm
65%14 km/h
April27°C16°C2°C / 35°C
70 mm
68%14 km/h
May30°C20°C6°C / 39°C
126 mm
72%13 km/h
June34°C23°C16°C / 41°C
57 mm
69%12 km/h
July35°C24°C17°C / 42°C
32 mm
65%11 km/h
August36°C24°C19°C / 42°C
50 mm
62%11 km/h
September33°C22°C12°C / 42°C
71 mm
67%10 km/h
October28°C17°C0°C / 38°C
91 mm
65%11 km/h
November22°C11°C-4°C / 33°C
54 mm
69%11 km/h
December19°C8°C-10°C / 31°C
46 mm
69%10 km/h

Best time to visit Round Rock

The most comfortable time to visit Round Rock is generally March to April and November, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around May, totalling about 741 mm a year.

Travellers who prefer heat should aim for August, when highs average 36°C. May is the month to avoid if rain would spoil your plans — it averages 126 mm, roughly 4× the rainfall of the driest month (July).

Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Round Rock forecast for what is happening now.

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