Round Rock Climate by Month
Round Rock, Texas, United States
Very hot summers and cool winters, with rain spread through the year.
Very hot summers and cool winters, with rain spread through the year: that's Round Rock's climate in short. Afternoon highs range from 62°F (16°C) in January to 97°F (36°C) in August, and January nights average 39°F (4°C). It gets 34 in (873 mm) of rain a year, spread across the months.
- Warmest month
- 97°F(36°C)
- Average high, August
- Coldest nights
- 39°F(4°C)
- Average low, January
- Rain per year
- 34 in(873 mm)
- No clear rainy season
- Humidity
- 63%
- Sunniest: July
Best and worst months in Round Rock
Best for weatherMarch and April are the best time for weather in Round Rock: highs near 76°F (24°C) and about 2.2 in (57 mm) of rain a month.
Least pleasantJune and August are the least pleasant; August is the hottest, with highs of 97°F (36°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in March.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Round Rock weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 62°F(16°C) | 39°F(4°C) | 2.2 in(55 mm) | 65% | 2.7 |
| FebFebruary | 66°F(19°C) | 43°F(6°C) | 2.4 in(61 mm) | 63% | 3.2 |
| MarMarchBest | 72°F(22°C) | 50°F(10°C) | 2.0 in(52 mm) | 66% | 4.1 |
| AprAprilBest | 80°F(26°C) | 56°F(14°C) | 2.4 in(62 mm) | 64% | 5.4 |
| MayMay | 86°F(30°C) | 65°F(18°C) | 4.4 in(112 mm) | 66% | 5.8 |
| JunJune | 92°F(34°C) | 71°F(22°C) | 4.0 in(102 mm) | 65% | 6.4 |
| JulJuly | 96°F(36°C) | 74°F(23°C) | 2.0 in(50 mm) | 59% | 6.8 |
| AugAugust | 97°F(36°C) | 74°F(23°C) | 2.2 in(55 mm) | 58% | 6.2 |
| SepSeptember | 91°F(33°C) | 68°F(20°C) | 4.0 in(101 mm) | 59% | 5.3 |
| OctOctober | 82°F(28°C) | 58°F(15°C) | 3.6 in(92 mm) | 64% | 4.0 |
| NovNovember | 70°F(21°C) | 48°F(9°C) | 2.8 in(72 mm) | 65% | 2.9 |
| DecDecember | 63°F(17°C) | 40°F(4°C) | 2.3 in(59 mm) | 62% | 2.5 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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