Union, Ohio Weather
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Weather Forecast for Union, Ohio : Montgomery County
Issued: 6:09 am EDT Jul 5, 2025 Latitude: 39.8978327 Longitude: -84.3063343 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Sunday Monday Tuesday Wednesday Thursday Friday
Sunny on Today Mostly Clear on Tonight 30% chance of thunderstorms on Sunday 60% chance of thunderstorms on Monday Partly Sunny on Tuesday 40% chance of thunderstorms on Wednesday 50% chance of thunderstorms on Thursday 50% chance of thunderstorms on Friday
High: 92°F Low: 71°F High: 92°F High: 88°F High: 88°F High: 89°F High: 87°F High: 89°F
Low: 71°F Low: 69°F Low: 69°F Low: 69°F Low: 68°F  
Sunny Mostly Clear Thunderstorms Thunderstorms Partly Sunny Thunderstorms Thunderstorms Thunderstorms
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Current Conditions at
DAYTON - (KDAY)
73°
Mostly Clear
Haze
as of 6:56 AM EDST
Rel. Humidity: 78%
Dew Point: 66°F
Visibility: 3 Miles
Pressure: 30.13 in.
Flight Rule: MVFR
Wind Data
3 MPH
160° South
Cloud Level(s): Few at 25000ft
Current Conditions at
WRIGHT-PATTERSON - (KFFO)
72°
Clear
as of 6:55 AM EDST
Rel. Humidity: 83%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
DAYTON-WRIGHT BROS - (KMGY)
72°
Clear
as of 6:53 AM EDST
Rel. Humidity: 83%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
HAMILTON - (KHAO)
66°
Clear
Fog
as of 6:53 AM EDST
Rel. Humidity: 100%
Dew Point: 66°F
Visibility: 1/2 Miles
Pressure: 30.13 in.
Flight Rule: IFR
Wind Data
Calm
Cloud Level(s): Clear
Sunny on Today Today... Sunny, with a high near 92. Calm wind becoming south 5 to 7 mph in the morning.
Mostly Clear on Tonight Tonight... Mostly clear, with a low around 71. South wind 3 to 5 mph.
30% chance of thunderstorms Sunday Sunday... A chance of showers and thunderstorms after 2pm. Sunny, with a high near 92. Southwest wind 6 to 11 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
30% chance of thunderstorms Sunday Night Sunday Night... A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 5am, then a slight chance of showers and thunderstorms after 5am. Mostly clear, with a low around 71. West wind 3 to 8 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
60% chance of thunderstorms Monday Monday... Showers and thunderstorms likely, mainly after 2pm. Partly sunny, with a high near 88. Southwest wind 3 to 8 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
60% chance of thunderstorms Monday Night Monday Night... Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 69. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 88.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 69.
40% chance of thunderstorms Wednesday Wednesday... A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 40%.
30% chance of thunderstorms Wednesday Night Wednesday Night... A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 30%.
50% chance of thunderstorms Thursday Thursday... A chance of showers and thunderstorms. Mostly cloudy, with a high near 87. Chance of precipitation is 50%.
30% chance of rain Thursday Night Thursday Night... A chance of showers. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.
50% chance of thunderstorms Friday Friday... A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 50%.
Current Radar Image


Sun Almanac for Union, Ohio
Sunrise: 06:15 AM
Sunset: 9:09 PM
Civil Sunrise:05:43 AM
Civil Sunset: 9:41 PM
Nautical Sunrise: 05:02 AM
Nautical Sunset: 10:22 PM
Astro Sunrise: 04:15 AM
Astro Sunset: 11:09 PM
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