His posts may be brief, but they are an answer to the question at hand.
47 degrees isn't the weather. That's the temperature. "Weather" encompasses many things beyond temperature, such as how dry or wet it is, if it's windy, etc.
The original post describes both temp and precip. I would assume that this is the baseline for a response, as it would be in real life:
"What's the weather, John?" "64 and raining, Mary."
Seattle is entering a dry streak. No rain in the forecast for at least four days (and Thursday looks to be mostly dry with a passing AM shower). Temps relatively steady in the low- to mid-50s. Beyond Thursday, I don't see any rain in the forecast. I'll take it! Especially after a very rainy January.