The correct spelling of "wether rate" is actually "weather rate." This refers to the measurement of how much precipitation or other weather conditions occur within a certain period of time. The IPA phonetic transcription of "weather rate" would be /ˈwɛðər reɪt/. The first syllable, "weath," is pronounced with a short "e" sound followed by the "th" sound. The second syllable, "er," is pronounced with a neutral vowel sound followed by the "r" sound. Finally, "rate" is pronounced with a long "a" sound followed by the "t" sound.