September weather stats for Hermiston, Oregon
Min temp - 2.6ºC (28th)
Mean temp - 17.3ºC
Max temp - 33.0ºC (10th)
Min dew point - -2.9ºC (26th)
Mean dew point - 8.4ºC
Max dew point - 14.4ºC (21st)
Min relative humidity - 20% (26th)
Mean relative humidity - 59%
Max relative humidity - 94% […]
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