Ohio · NWS ILN office

Hamilton, OH weather

It is 46°F and clear at Butler County Regional Airport as of Oct 28, 5:05 AM EDT. Overnight: Mostly Cloudy, low near 46°F. Forecast from the National Weather Service, issued Oct 28, 4:00 AM EDT.

Updated Oct 28, 5:19 AM EDT (snapshot)

Current conditions

Temperature

46°F

Clear

Wind

Calm

Humidity 100% · dew point 46°F

Pressure · visibility

30.27 inHg

Visibility 7 mi

Observed at Butler County Regional Airport (KHAO), Oct 28, 5:05 AM EDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the Hamilton forecast zone right now.

Around the NWS ILN forecast area

No active alerts in zones served by the ILN office near Hamilton.

From the alert snapshot of Oct 28, 2026, 5:12 AM EDT. No alerts are active anywhere in Ohio.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for Hamilton (local time)
TimeTempForecastPrecip. chanceWind
Wed 7 AM50°FPatchy Fog0% 0 mph
Wed 8 AM49°FPatchy Fog1% 0 mph
Wed 9 AM51°FSunny1% 0 mph
Wed 10 AM57°FSunny1% 0 mph
Wed 11 AM63°FSunny1%S 1 mph
Wed 12 PM68°FSunny1%SW 2 mph
Wed 1 PM71°FSunny0%SW 3 mph
Wed 2 PM73°FSunny0%SW 3 mph
Wed 3 PM74°FSunny0%SW 3 mph
Wed 4 PM75°FSunny0%SW 3 mph
Wed 5 PM76°FSunny0%SW 3 mph
Wed 6 PM74°FMostly Clear1%S 2 mph
Wed 7 PM70°FClear1%S 1 mph
Wed 8 PM66°FClear0%SE 1 mph
Wed 9 PM60°FClear0%SE 1 mph
Wed 10 PM58°FClear0% 0 mph
Wed 11 PM57°FClear0% 0 mph
Thu 12 AM55°FClear0% 0 mph
Thu 1 AM54°FClear0% 0 mph
Thu 2 AM52°FClear0%S 1 mph
Thu 3 AM52°FClear0%SW 1 mph
Thu 4 AM51°FClear0%S 1 mph
Thu 5 AM50°FClear0%S 1 mph
Thu 6 AM50°FSunny0%S 1 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Hamilton can differ.

7-day forecast

Overnight

Low 46°F

Mostly cloudy, with a low around 46. Wind around 0 mph.

Wednesday

High 76°F·Low 46°F

Sunny, with a high near 76. Southwest wind 0 to 3 mph.

Wednesday Night: Clear, with a low around 46. South wind around 2 mph.

Thursday

High 78°F·Low 52°F

Sunny, with a high near 78. Southwest wind 1 to 9 mph.

Thursday Night: Mostly clear, with a low around 52. West wind 1 to 7 mph.

Friday

High 74°F·Low 49°F

Sunny, with a high near 74.

Friday Night: Mostly cloudy, with a low around 49.

Saturday

High 71°F·Low 52°F

Mostly cloudy, with a high near 71.

Saturday Night: A slight chance of rain after 1am. Cloudy, with a low around 52.

Sunday

High 70°F·Low 53°F

A chance of rain. Cloudy, with a high near 70. Chance of precipitation is 50%.

Sunday Night: A chance of rain. Mostly cloudy, with a low around 53. Chance of precipitation is 50%.

Monday

High 70°F·Low 55°F

A chance of rain. Mostly cloudy, with a high near 70. Chance of precipitation is 40%.

Monday Night: A chance of rain. Mostly cloudy, with a low around 55. Chance of precipitation is 50%.

Tuesday

High 71°F

Rain likely. Mostly cloudy, with a high near 71.

Nearby cities

Larger cities in the area

Other cities in Butler County

See every city we cover in Ohio, or check all active alerts.

About this forecast

Forecast office
Hamilton is served by the National Weather Service ILN forecast office, forecast zone OHZ070, county zone OHC017.
Location used
The Census Bureau's internal point for Hamilton (39.3943, -84.5655), in Butler County. Population: 63,953 (2024 estimate), number 10 of the 86 Ohio cities on this site.
Radar
Nearest NWS radar: KILN. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/39.3943,-84.5655 (forecast issued Oct 28, 4:00 AM EDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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