When it comes to talking about hot weather, "stifling hot" is certainly a common phrase. However, there are plenty of other synonyms to choose from if you want to mix up your language a bit. For example, you might describe the weather as oppressive, sweltering, or suffocating. Perhaps it's more apt to say that it's blisteringly hot, searing, or scorching. If you're in the mood for something a bit more creative, you might describe the sun as a fiery beacon or refer to the heat as a punishing onslaught. No matter how you choose to describe the temperature, it's clear that the heat can be a real challenge to endure.