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City of Westerville, OHWesterville, OH Weather Forecast
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| TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
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| Patchy Fog | Clear | Mostly Sunny | Clear | Mostly Sunny | Clear | Sunny | Clear | Mostly Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Hi: 69°FHi: 21°C | Lo: 40°FLo: 4°C | Hi: 69°FHi: 21°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Lo: 39°FLo: 4°C | Hi: 65°FHi: 18°C | Lo: 40°FLo: 4°C | Hi: 70°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 71°FHi: 22°C | Lo: 45°FLo: 7°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 404 AM EDT Wed Oct 21 2026 
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Issued: 649 AM EDT Wed Oct 21 2026
Key Messages
1) Dense fog is occurring across portions of the region this morning.
2) High pressure will persist over the region through the week and into the weekend, bringing dry and seasonable conditions.
Discussion
... Key Message 1)
Increased moisture from Lake Erie is resulting in fog, some of which is dense, across portions of northern/northwest Ohio. The light northeast flow is pushing the fog into Hardin County Ohio, and it will continue to expand over the next few hours into daybreak. Given...