Decatur, OH
Unincorporated community in Brown County, Ohio
Decatur is a small unincorporated community in Brown County, Ohio. It is 5.8 miles NW of Russellville, the nearest town. Its ZIP code is 45115.
Decatur at a glance
- State
- Ohio
- County
- Brown County
- ZIP code
- 45115
- Nearest town
- Russellville (5.8 mi)
- Time zone
- America/New York
- Coordinates
- 38.8156, -83.7039
Weather in Decatur now
Loading the National Weather Service forecast…
Decatur weather by the hour
Decatur weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Decatur.
This week in Decatur
Sunrise, sunset and moon in Decatur
What is the weather usually like in Decatur?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 86°F average high
- Januarycoldest month · 17°F average low
- 47.8 inprecipitation per year · 1,215 mm
- 17.2 insnowfall per year · 44 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Decatur: May–June and August–September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station RIPLEY EXP FARM, OH US (USC00337120), adjusted for the elevation of Decatur.
Decatur weather month by month
Sunrise and sunset in Decatur through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:49 AM | 5:38 PM | 9 h 48 min |
| February | 7:24 AM | 6:13 PM | 10 h 49 min |
| March | 7:44 AM | 7:43 PM | 11 h 58 min |
| April | 6:56 AM | 8:13 PM | 13 h 16 min |
| May | 6:20 AM | 8:41 PM | 14 h 21 min |
| June | 6:07 AM | 9:03 PM | 14 h 55 min |
| July | 6:20 AM | 9:00 PM | 14 h 40 min |
| August | 6:47 AM | 8:31 PM | 13 h 43 min |
| September | 7:15 AM | 7:44 PM | 12 h 29 min |
| October | 7:43 AM | 6:57 PM | 11 h 14 min |
| November | 7:16 AM | 5:22 PM | 10 h 6 min |
| December | 7:44 AM | 5:15 PM | 9 h 31 min |
Times for the 15th of each month, local time (America/New York).
What is the weather like in Decatur?
Decatur has a hot-summer humid continental climate. The warmest month is July, with an average high of 86°F (30°C), and the coldest is January, with average lows of 17°F (-8°C).
It gets about 47.8 inches (1,215 mm) of precipitation a year. The wettest month is May and the driest is September. Snow is common: about 17 inches fall in an average year.
The best time to visit Decatur is May–June and August–September. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
Webcams near Decatur
The closest live webcam is Maysville: US 68 MP 18 @ Ohio River Brdg, 10.2 miles SW of Decatur.
Webcams: Windy.com. Distances in a straight line from Decatur.
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Map of Decatur, OH
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Decatur Street View
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Open in Google Maps ›Towns near Decatur
Other communities near Decatur
Questions about Decatur
Where is Decatur, OH?
Decatur is an unincorporated community in Brown County, Ohio, 5.8 miles NW of Russellville.
What county is Decatur in?
Decatur is in Brown County, Ohio.
What is the ZIP code of Decatur, OH?
The ZIP code for Decatur is 45115.
What is the nearest town to Decatur?
Russellville, 5.8 miles away.
Are there webcams near Decatur?
Yes. The closest is Maysville: US 68 MP 18 @ Ohio River Brdg, 10.2 miles away.
What is the hottest month in Decatur?
July, with an average high of 86°F (30°C).
What is the coldest month in Decatur?
January, with an average low of 17°F (-8°C).
How much does it rain in Decatur?
About 47.8 inches (1,215 mm) a year; the wettest month is May.
Does it snow in Decatur?
Yes, about 17 inches of snow fall in an average year.
When is the best time to visit Decatur?
May–June and August–September, when temperatures are most pleasant and rainy days are fewer.
What climate does Decatur have?
Hot-summer humid continental (Köppen Dfa).
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