Final Answer:
Today, the weather's more beautiful.
Therefore, option 3) more beautiful is correct.
Step-by-step explanation:
The comparative form "more beautiful" is the appropriate choice when describing the current weather compared to the stormy conditions of the previous day. This phrase conveys an improvement in weather conditions without necessarily indicating the extreme superlative or the highest level of beauty.
Using "more beautiful" suggests a positive change in the weather, highlighting a contrast with the stormy conditions experienced yesterday. It communicates a sense of appreciation for the improved and aesthetically pleasing weather conditions observed on the current day.
Therefore, option 3) more beautiful is correct.