Arcanum, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Arcanum, a village in Darke County, Ohio.
Today
82°F
Sunny
Sunny, with a high near 82. Northeast wind around 2 mph.
7-day forecast for Arcanum
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Sunny | 2 mph NE | 0% |
| Tonight | 60°F | Mostly Clear | 2 mph N | 0% |
| Wednesday | 84°F | Sunny | 1 to 5 mph NE | 3% |
| Wednesday Night | 64°F | Mostly Clear | 5 mph W | 3% |
| Thursday | 84°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 9 mph SW | 50% |
| Thursday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 7 mph SW | 70% |
| Friday | 82°F | Showers And Thunderstorms Likely | 5 to 8 mph SW | 67% |
| Friday Night | 65°F | Showers And Thunderstorms Likely | 6 mph SW | 62% |
| Saturday | 83°F | Chance Showers And Thunderstorms | 5 to 8 mph SW | 26% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms then Partly Cloudy | 6 mph SW | 26% |
| Sunday | 85°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 to 12 mph SW | 16% |
| Sunday Night | 68°F | Slight Chance Showers And Thunderstorms | 7 to 10 mph SW | 17% |
| Monday | 86°F | Slight Chance Showers And Thunderstorms | 13 mph SW | 28% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 10 mph SW | 34% |
Forecast source: National Weather Service (api.weather.gov) for Arcanum (39.992, -84.554). Updated through the day.
Growing snapshot for Arcanum
Last spring frost
Apr 21
First fall frost
Oct 20
Growing season
180 days
Hardiness zone
6a
More local growing data for Arcanum: nearby ZIP 45304 weather · frost dates · planting calendar · Ohio frost dates
Nearby towns & communities
Ansonia
Bradford
Gettysburg
Greenville
Hollansburg
Ithaca
New Madison
New Weston
North Star
Osgood
Palestine
Pitsburg
Rossburg
Union City
Versailles
Wayne Lakes
Yorkshire
Climate data from the nearest NOAA station, Greenville Wtp, Oh (10.7 mi from Arcanum). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.