Laredo’s weather is typically hot and dry. The hot season reaches an average high of 99°F and low of 78°F in August, while the coolest month is January with a low of 49°F and high of 69°F.4 August is the cloudiest month, and it’s typically overcast around half the time. Rain is less common here than in some other parts of the country, but it’s still common to see an average of 2.5 inches of rainfall in September (the wettest month) and various amounts throughout the year.