Rockwall Climate by Month
Rockwall, Texas, United States
Very hot summers and cool winters, with rain spread through the year.
Rockwall has very hot summers and cool winters, with rain spread through the year. August is the warmest month, with highs around 96°F (36°C); January is the coolest at 56°F (13°C), and nights dip to 35°F (2°C). It gets 39 in (1000 mm) of rain a year, spread across the months.
- Warmest month
- 96°F(36°C)
- Average high, August
- Coldest nights
- 35°F(2°C)
- Average low, January
- Rain per year
- 39 in(1000 mm)
- No clear rainy season
- Humidity
- 65%
- Sunniest: July
Best and worst months in Rockwall
Best for weatherThe most comfortable weather comes in April and October, with highs around 78°F (25°C) and about 3.9 in (100 mm) of rain a month.
Least pleasantJuly and August are the least pleasant; August is the hottest, with highs of 96°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 April.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Rockwall weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 56°F(13°C) | 35°F(2°C) | 2.2 in(57 mm) | 68% | 2.5 |
| FebFebruary | 60°F(16°C) | 39°F(4°C) | 3.1 in(78 mm) | 66% | 3.2 |
| MarMarch | 68°F(20°C) | 46°F(8°C) | 3.5 in(89 mm) | 69% | 4.1 |
| AprAprilBest | 76°F(25°C) | 54°F(12°C) | 4.1 in(104 mm) | 66% | 5.3 |
| MayMay | 83°F(29°C) | 63°F(17°C) | 5.2 in(132 mm) | 71% | 5.6 |
| JunJune | 91°F(33°C) | 71°F(22°C) | 3.9 in(99 mm) | 67% | 6.4 |
| JulJuly | 96°F(35°C) | 74°F(24°C) | 2.3 in(58 mm) | 61% | 7.0 |
| AugAugust | 96°F(36°C) | 74°F(23°C) | 2.1 in(54 mm) | 59% | 6.3 |
| SepSeptember | 89°F(32°C) | 67°F(19°C) | 3.4 in(86 mm) | 61% | 5.1 |
| OctOctoberBest | 79°F(26°C) | 55°F(13°C) | 3.8 in(96 mm) | 61% | 3.8 |
| NovNovember | 67°F(19°C) | 45°F(7°C) | 2.8 in(71 mm) | 65% | 2.7 |
| DecDecember | 58°F(14°C) | 37°F(3°C) | 3.0 in(76 mm) | 63% | 2.4 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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