Texas spans 268,596 sq mi—large enough for five Köppen climate zones.
| Zone | Region | Characteristics | Jan Avg | Jul Avg | Annual Precip |
|---|---|---|---|---|---|
| Humid Subtropical (Cfa) | East TX (Houston, Dallas, Tyler) | Hot humid summers, mild winters, no dry season | 45°F (7°C) | 85°F (29°C) | 40–50 in |
| Tropical (Aw/Am) | South TX (Brownsville, McAllen, Coast) | Hot, distinct wet/dry seasons, rare freeze | 55°F (13°C) | 90°F (32°C) | 50+ in |
| Semi-Arid Steppe (BSh/BSk) | Central/West (San Angelo, Midland, Lubbock) | Hot summers, mild winters, low rain, high evaporation | 35°F (2°C) | 95°F (35°C) | 20–25 in |
| Arid Desert (BWh/BWk) | Far West (El Paso, Big Bend) | Very hot summers, mild winters, very low rain | 45°F (7°C) | 100°F (38°C) | <10 in |
| Highland / Mountain (Csb/H) | Guadalupe, Davis, Chisos Mtns | Cool summers, cold winters, orographic precip | 30°F (-1°C) | 75°F (24°C) | 25+ in |
Texas weather isn’t one thing—it’s five climates in one state.