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Union, KY Weather
Current conditions
Observed at Cincinnati/Northern Kentucky International Airport · 20 min ago
Forecast
10-day-
Tonight
Mostly clear, with a low around 42. East wind around 3 mph.
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Wednesday
Sunny, with a high near 69. Northeast wind around 3 mph.
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Wednesday Night
Mostly clear, with a low around 44. North wind around 2 mph.
National Weather Service forecast updated 9 hrs ago.
Hourly
Hourly forecast- Now46°
- 2 AM45°
- 3 AM44°
- 4 AM43°
- 5 AM43°
- 6 AM42°
- 7 AM42°
- 8 AM42°
- 9 AM44°
- 10 AM51°
- 11 AM57°
- 12 PM61°
- 1 PM65°
- 2 PM67°
- 3 PM68°
- 4 PM69°
- 5 PM68°
- 6 PM67°
- 7 PM63°
- 8 PM56°
- 9 PM54°
- 10 PM52°
- 11 PM50°
- Thu12 AM49°
10-day forecast
Details- TonightOct 20Mostly Clear42°
- TodayOct 21Sunny44°69°
- ThuOct 22Sunny45°68°
- FriOct 23Sunny41°67°
- SatOct 24Sunny44°69°
- SunOct 25Mostly Sunny46°72°
- MonOct 26Mostly Sunny48°72°
- TueOct 27Mostly Sunny65°
- WedOct 28Cloudy0.02 in44°55°
- ThuOct 29Sunny38°56°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news near Union
More weather news- From Freeze to Ease: Cincinnati Shakes Off Frost, Basks in Sunny 60s All Week
Fog and a sharp early chill greeted Cincinnati on Sunday morning, with a Freeze Warning in effect until 9 a.m. The payoff comes later: sunshine should take over, sending temperatures toward a comfortable high near 64…
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Freeze warning issued through Sunday morning ahead of sunny Tri-State warm-upFOX19 | Cincinnati Freeze warning issued through Sunday morning ahead of sunny Tri-State warm-up Protester removed from President Trump rally in Northern Kentucky Monroe Sheriff: One dead, ‘several’ others hurt during…
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OH WFO CINCINNATI Warnings, Watches, and AdvisoriesWFO CINCINNATI Warnings, Watches and Advisories for Sunday, October 18, 2026 URGENT - WEATHER MESSAGE National Weather Service Wilmington OH 130 PM EDT Fri Oct 16 2026 and northern Kentucky, and central, south central…
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Dangerous Freeze Watch for Parts of Indiana and Michigan as Temperatures DropA Freeze Watch is in effect for northern, east central and southeast Indiana from late Saturday night through Sunday morning, with lows as cold as 31 degrees possible. A Frost Advisory comes first, for parts of northern…
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Trudy strengthens to a hurricane as system nears Mexico’s coast with major storm expectedWDRB Trudy was located about 300 miles (480 kilometers) southwest of Acapulco, Mexico, with maximum sustained winds of 75 mph (120 kph), according to the U.S. National Hurricane Center in Miami. The hurricane was moving…
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Sunny skies return and temps remain coolKMVT Chief Meteorologist Avaionia Smith: October 14, 2026— Good Evening and Happy Wednesday! We start off the work week with rain, snow, and cold weather. Rain is clearing and temps do remain cool, highs area wide are…
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Tri-State ties 1928 heat record before storms bring sharp weekend chillCINCINNATI (WKRC) — Cincinnati tied a 98-year-old temperature record Tuesday as the Tri-State reached 88 degrees at Cincinnati/Northern Kentucky International Airport. The temperature matched the Oct. 13 record set in…
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Near high temperature records for Tuesday, hot temps remain so far in OctoberHazy but wispy gray clouds can been seen on the Dayton horizon. As October goes on, hot temperatures remain in the forecast for the local region, bringing a summer feeling rather than a fall feeling to the month. The…
- Kentucky Winter 2026-27: Louisville, 13.89-Inch Snow History
NOAA's historical El Niño snowfall analysis from 1950–2009 shows mixed snowfall departures across Kentucky and neighboring states, without establishing a consistent statewide increase or decrease. Why El Niño Doesn't…
- Here’s what the Super El Niño has in store for Kentucky this winter
Lexington Herald Leader Forecasters are pointing to a colder-than-normal winter for Kentucky, with a strengthening El Niño potentially sharpening the chill. Here’s a quick look at what Lexington and the broader region…
Air quality
Air quality is satisfactory, and air pollution poses little or no risk.
Northern Kentucky, KY reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyCincinnati Area, records since 1872. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Cincinnati 25 km
- Hamilton 51 km
- Fairfield 46 km
- Covington 21 km
- Mason 56 km
- Florence 8 km
- Independence 12 km
- Norwood 30 km
- White Oak 31 km
- Erlanger 10 km
- Forest Park 41 km
- Fort Thomas 25 km
Forecasters' discussion
From the National Weather Service office in ILN, issued 6 hrs ago
What Has Changed
Added fog in for tonight. Lowered temperatures and added frost into portions of central Ohio for Wednesday night.
Key Messages
1) Fog will be possible across portions of the region overnight.
2) High pressure will persist over the region through the week and into the weekend, bringing dry and seasonable conditions.
Discussion
Key Message 1)
With flow off of the lake, there will be the potential for some stratus and fog across northern and northwestern portions of the region overnight and into the daytime morning hours on Wednesday. In addition there will be the potential for river valley fog as well.
Key Message 2)
Dry conditions are expected through the week. Highs are expected to generally be in the 60s and 70s with lows in the 30s and 40s. Some patchy frost will be possible across central Ohio Wednesday night and Friday night.
Aviation
Calm and clear conditions tonight could lead to some BR/FG formation prior to sunrise. Any visibility restrictions mix out during the morning hours. Light northerly winds develop by Wednesday afternoon.
OUTLOOK...No significant weather expected.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.