San Antonio is currently experiencing a mini heat wave, with temperatures soaring into the 70s and 80s this week, according to the Houston Chronicle. This unseasonably warm weather is a result of an upper-atmospheric ridge of high pressure. This ridge compresses air closer to the ground, leading to increased surface temperatures across the region. Forecasts from the National Blend of Models indicate that temperatures at San Antonio International Airport will be significantly higher than typical February averages, with Monday expected to reach a high of 81°F (27°C).