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The precipitation outlook for September 2024, showing where the average precipitation (rain and snow) is favored to be much higher than average (greens) or much lower than average (browns). Darker colors mean higher chances, not more extreme precipitation departures. White areas mean that there are equal chances for a wet, dry, or near-average September. Much higher or much lower than average means "in the upper or lower third" of total September precipitation amounts from 1991-2020. Text-only forecast for Hawaii available from NOAA Climate Prediction Center.