Decatur, OH Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Decatur, OH in one place.
Sunny, with a high near 86. East wind around 3 mph.
Local Weather Overview
This forecast page for Decatur, OH is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Aug 27, 2026 11:29 PM EDT.
The active forecast window currently covers Aug 29 to Sep 3, 2026 for Decatur, OH.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 29 to Sep 3, 2026
- Latest sync
- Aug 27, 2026 11:29 PM EDT
- Forecast office
- ILN
- Source
- NOAA / NWS
Daily Outlook
This Week in Decatur
Tuesday looks like the warmest upcoming period in Decatur at 94 degrees F.
Saturday Night is the coolest period ahead with temperatures near 64 degrees F.
The strongest winds are forecast for Monday at about 2 to 7 mph SW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 27, 2026 11:29 PM EDT
- Coverage
- 6 days
- Time zone
- America/New_York
- Forecast office
- ILN
- Radar station
- KILN
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 64. East wind around 2 mph.
Sunny, with a high near 91.
Mostly clear, with a low around 70.
Sunny, with a high near 93.
Mostly clear, with a low around 72.
Sunny, with a high near 94.
Mostly clear, with a low around 73.
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 93.
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 73.
A slight chance of rain showers before 8am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Aug 29
|
Sunny
|
86°F |
3 mph
E
|
|
Saturday Night
Aug 29
|
Mostly Clear
|
64°F |
2 mph
E
|
|
Sunday
Aug 30
|
Sunny
|
91°F |
1 to 6 mph
S
|
|
Sunday Night
Aug 30
|
Mostly Clear
|
70°F |
3 mph
S
|
|
Monday
Aug 31
|
Sunny
|
93°F |
2 to 7 mph
SW
|
|
Monday Night
Aug 31
|
Mostly Clear
|
72°F |
5 mph
SW
|
|
Tuesday
Sep 1
|
Sunny
|
94°F |
2 to 7 mph
SW
|
|
Tuesday Night
Sep 1
|
Mostly Clear
|
73°F |
1 to 5 mph
SW
|
|
Wednesday
Sep 2
|
Sunny then Slight Chance Showers And Thunderstorms
|
93°F |
2 to 7 mph
SW
|
|
Wednesday Night
Sep 2
|
Slight Chance Showers And Thunderstorms
|
73°F |
5 mph
SW
|
|
Thursday
Sep 3
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
92°F |
2 to 7 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Decatur.