Tropical Moisture Producing Heavy Rain in Portions of the Western U.S., Southeast Florida, and Puerto Rico and the U.S. Virgin Islands

Heavy rain and flash flooding will continue across portions of California, the Southwest, and parts of the Southern Rockies. Strong to locally severe thunderstorms and heavy rain will impact portions of the Plains and Mississippi Valley. Tropical moisture is causing heavy rainfall in southeast Florida, Puerto Rico and the Virgin Islands, Read More >

Jump to Memorial Day climatology for Cincinnati | Columbus

Here is a look at some Memorial Day weather statistics for Dayton, with data going back to 1894. Memorial Day was originally observed each year on May 30th, until federal law moved the holiday to the last Monday of May beginning in 1971. As can be seen in the data below, there has been a fairly wide spectrum of temperatures and precipitation amounts on Memorial Day in Dayton, but high temperatures have generally been in the 70s and low temperatures in the 50s/60s. It is also not uncommon for Dayton to see some rain on Memorial Day.

Memorial Day Climate Extremes (1894-2025):
Warmest High Temperature: 95 degrees (1895)
Coldest High Temperature: 55 degrees (1996)
Coldest Low Temperature: 40 degrees (1947)
Warmest Low Temperature: 72 degrees (1942)
Most Precipitation: 1.98 inches (1905)

Memorial Day Climate Averages (1894-2025):
Average High Temperature: 77 degrees
Average Low Temperature: 57 degrees
Average Precipitation: 0.11 inches

Below are graphs showing the frequency distribution of Memorial Day high/low temperatures and precipitation for Dayton. Click here for a full listing of Dayton's Memorial Day climate records.