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Severe Weather Summary - June 18, 2026

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Dayton, Cox Dayton International Airport (KDAY)

Lat: 39.91°NLon: 84.22°WElev: 1007ft.

Overcast

66°F

19°C

Humidity	73%
Wind Speed	W 8 mph
Barometer	30.00 in (1015.4 mb)
Dewpoint	57°F (14°C)
Visibility	10.00 mi
Last update	20 Jun 8:56 am EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Vandalia OH

Today
High: 79 °F
Slight Chance
Showers
Tonight
Low: 58 °F
Mostly Clear
Sunday
High: 80 °F
Mostly Sunny
then Chance
Showers
Sunday Night
Low: 64 °F
Heavy Rain
Monday
High: 76 °F
Showers
Monday Night
Low: 58 °F
Chance
Showers then
Partly Cloudy
Tuesday
High: 77 °F
Sunny
Tuesday Night
Low: 58 °F
Mostly Clear
Wednesday
High: 78 °F
Mostly Sunny
then Chance
T-storms

Detailed Forecast

Today

A slight chance of showers before 1pm. Mostly sunny, with a high near 79. West wind 8 to 14 mph. Chance of precipitation is 20%.

Tonight

Mostly clear, with a low around 58. West wind 5 to 8 mph becoming calm after midnight.

Sunday

A slight chance of showers between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 80. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday Night

A chance of showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 5am, then showers after 5am. Some of the storms could produce heavy rainfall. Low around 64. East wind 11 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

Monday

Showers before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. High near 76. Southwest wind around 13 mph becoming north in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Monday Night

A chance of showers before 8pm. Partly cloudy, with a low around 58. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Tuesday

Sunny, with a high near 77.

Tuesday Night

Mostly clear, with a low around 58.

Wednesday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 78. Chance of precipitation is 30%.

Wednesday Night

A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 60. Chance of precipitation is 30%.

Thursday

A chance of showers. Mostly sunny, with a high near 78. Chance of precipitation is 30%.

Thursday Night

A chance of showers. Partly cloudy, with a low around 60. Chance of precipitation is 30%.