
The weather information given below was recorded at the National Oceanic and Atmospheric Administration's official weather station in Mount Vernon for the 24-hour period ending at 7 a.m. on the day listed for the period of Sunday, Sept. 20, through Saturday, Sept. 26, 2026. Temperatures are recorded to the nearest Fahrenheit degree, while precipitation is recorded to one-hundredth of an inch; “T” indicates a trace of rain too little to measure.
