Galveston's climate is classified as humid subtropical.
Prevailing winds from the south and southeast bring both heat from the deserts
of Mexico and moisture from the Gulf of Mexico. Summer temperatures regularly
exceed 90 °F (32 °C) and the area's humidity drives the heat index
even higher, while nighttime lows average around 80 °F (27 °C).
Winters in the area are temperate with typical January highs above 60 °F
(16 °C) and lows near 50 °F (10 °C). Snowfall is generally rare.
Annual rainfall averages well over 40 inches (1,000 mm) a year