Final answer:
The underlined word 'uncomfortable' is an adjective that describes the graduation day and gives more information about it.
Step-by-step explanation:
The underlined word 'uncomfortable' is an adjective in the sentence. Adjectives are words that describe or modify nouns or pronouns. In this sentence, 'uncomfortable' describes the graduation day, explaining how the weather made it feel. It gives the reader more information about the day in question.
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