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Mason, OH 45040 Weather

It is 55°F and clear in Mason, OH 45040, observed at 9:55 AM EDT. Today: Sunny, high 70°F, low 46°F. Hourly and 10-day forecast from the National Weather Service. Times are local (EDT).

Mason, OH 45040 current weather

55°F

Clear

H 70° / L 46°Feels like 55°

4° cooler than yesterday at this time

  • No rain expected in the next 12 hours

Observed at Warren County Airport (8.1 mi away), 10/30/2026, 9:55 AM EDT

Hourly forecast

NWS, updated 10/30/2026, 1:00 AM PT

  1. Now59°
  2. 12 PM63°
  3. 1 PM66°
  4. 2 PM68°
  5. 3 PM68°
  6. 4 PM69°
  7. 5 PM70°
  8. 6 PM67°
  9. 7 PM63°
  10. 8 PM60°
  11. 9 PM54°
  12. 10 PM52°
  13. 11 PM51°
  14. 12 AM50°Sat
  15. 1 AM49°
  16. 2 AM49°
  17. 3 AM48°
  18. 4 AM48°
  19. 5 AM47°
  20. 6 AM47°
  21. 7 AM47°
  22. 8 AM46°
  23. 9 AM48°
  24. 10 AM52°
  25. 11 AM57°
  26. 12 PM61°
  27. 1 PM64°
  28. 2 PM65°
  29. 3 PM66°
  30. 4 PM66°
  31. 5 PM67°
  32. 6 PM65°
  33. 7 PM63°
  34. 8 PM61°
  35. 9 PM57°
  36. 10 PM56°
  37. 11 PM56°
  38. 12 AM56°Sun
  39. 1 AM55°
  40. 1 AM55°
  41. 2 AM55°
  42. 3 AM54°
  43. 4 AM54°
  44. 5 AM53°
  45. 6 AM53°
  46. 7 AM53°15%
  47. 8 AM55°15%
  48. 9 AM58°15%

10-day forecast

Tap a day for details

  • Today10/30Low 46°High 70°

    Today: Sunny, with a high near 70. North wind around 6 mph.

    Tonight: Partly cloudy, with a low around 46. Northeast wind around 7 mph.

    Sunny
  • Sat10/31Low 53°High 67°

    Saturday: Mostly cloudy, with a high near 67. East wind around 9 mph.

    Saturday Night: Cloudy, with a low around 53. East wind 2 to 7 mph.

    Mostly Cloudy
  • Sun11/141% chance of precipitationLow 50°High 67°

    Sunday: A chance of rain after 7am. Mostly cloudy, with a high near 67. Southeast wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

    Sunday Night: A chance of rain. Mostly cloudy, with a low around 50. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.

    Chance Light Rain
  • Mon11/240% chance of precipitationLow 53°High 66°

    Monday: A chance of rain. Mostly cloudy, with a high near 66. Chance of precipitation is 40%.

    Monday Night: A chance of rain before 1am. Mostly cloudy, with a low around 53. Chance of precipitation is 40%.

    Chance Light Rain
  • Tue11/329% chance of precipitationLow 54°High 74°

    Tuesday: A slight chance of rain after 1pm. Partly sunny, with a high near 74.

    Tuesday Night: A chance of rain. Partly cloudy, with a low around 54. Chance of precipitation is 30%.

    Partly Sunny then Slight Chance Light Rain
  • Wed11/456% chance of precipitationLow 51°High 71°

    Wednesday: Rain likely. Partly sunny, with a high near 71. Chance of precipitation is 60%.

    Wednesday Night: Rain likely. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.

    Light Rain Likely
  • Thu11/546% chance of precipitationLow 44°High 67°

    Thursday: A chance of rain. Partly sunny, with a high near 67. Chance of precipitation is 50%.

    Thursday Night: A chance of rain. Mostly cloudy, with a low around 44.

    Chance Light Rain
  • Fri11/6Model blend33% chance of precipitationLow 44°High 63°

    Friday: Chance of rain. High near 63°. Low that night near 44°.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Sat11/7Model blend16% chance of precipitationLow 41°High 60°

    Saturday: Mostly cloudy, slight chance of rain. High near 60°. Low that night near 41°.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Sun11/8Model blend18% chance of precipitationLow 40°High 62°

    Sunday: Partly cloudy, slight chance of rain. High near 62°. Low that night near 40°. About 0.02 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

Forecast for 39.352, -84.303 from the NWS ILN office, updated 10/30/2026, 1:00 AM PT · Official forecast on weather.gov

Days 8 to 10: NOAA National Blend of Models, station KI68 (Lebanon/Warren Cnty, 8 mi), model run 10/30/2026, 4:00 AM EDT

From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.

Next 6 hours

NWS hourly forecast

  1. Now59°Sunny0%6 mph
  2. 12 PM63°Sunny0%6 mph
  3. 1 PM66°Sunny0%5 mph
  4. 2 PM68°Sunny0%5 mph
  5. 3 PM68°Sunny0%5 mph
  6. 4 PM69°Sunny0%5 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShow

Observed today

Since midnight, vs yesterday and normal

Today's high so far is 1° above the normal of 61° and 14° cooler than yesterday's high.

High so far
63°
1° above normal
Low so far
50°
Normal low 38°
Precipitation
0.00 in
Since midnight
Yesterday
High 77° · Low 50° · Precip 0.00 in
Normal for today
High 61° · Low 38°

Observed at Warren County Airport (KI68) since midnight local time, through 9:55 AM. Station reports are preliminary and not quality controlled. Normals are estimated from 1991 to 2020 monthly normals at Milford.

Radar and satellite

National radar

NEXRAD (up to 24 hours) and GOES

Latest

Frequently asked questions

What is the weather in Mason, OH 45040 right now?
The latest observation from Warren County Airport was 55°F and clear, reported at 10/30/2026, 9:55 AM EDT.
What is the high temperature today in Mason, OH 45040?
The National Weather Service forecast for today calls for a high near 70°F. Sunny.
Will it rain in Mason, OH 45040 in the next 24 hours?
The NWS hourly forecast does not show any hour with a 50% or higher chance of precipitation in the next 24 hours.
What is the 10-day forecast for Mason, OH 45040?
The first 7 days come from the National Weather Service forecast. Days 8 to 10 (Nov 6 to Nov 8) come from the NOAA National Blend of Models, with highs of 60°F to 63°F and up to a 33% chance of precipitation. Model guidance this far out often changes.
What time is sunrise and sunset in Mason, OH 45040 today?
Sunrise is about 8:03 AM EDT and sunset is about 6:38 PM EDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Mason, OH 45040?
At Milford, the 1991 to 2020 normal high in October is 68°F and the normal low is 42°F.

Rain and snow totals

Next 3 days, NWS forecast grid

Rain (liquid)
0.11 in
Snow
0.00 in
Ice
0.00 in

Nearby hazards

Ohio hazards

Severe storm and flash flood outlooks, expected rain, river flooding and wildfires near this area

  • Severe storm outlook today:No thunderstorm risk area over this locationOutlook map
  • Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
  • River gauges within 40 miles at or above flood stage: None reported
  • Active wildfires within 50 miles: None reported

UV and air quality forecast

EPA and AirNow

AQI forecast today (Cincinnati)
60ModeratePM2.5

UV index guide · Air quality

Drought

By county

Warren County, week of 10/27/2026

No drought or abnormal dryness in this county.

Sun and moon

Local time, center of the area

Sunrise
8:03 AM
Sunset
6:38 PM
Daylight
10 hr 35 min
Moon
Waning Gibbous 79% lit
First light (civil dawn)
7:35 AM
Last light (civil dusk)
7:06 PM
Moonrise
10:19 PM
Moonset
1:14 PM

Normal October weather

Climate

Normal October high 68°, low 42°. 1991 to 2020 normals at Milford, 12 mi away.

Other places nearby

Data sources

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About this data

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