Live Weather & Forecast

Weather in Decatur

Q: What is the current weather in Decatur?

Current conditions in Decatur: Partly cloudy, temperature 22°C, humidity 65%.

Q: What is the best time to visit Decatur?

The best time to visit Decatur is typically June – September. Warm, dry summers — ideal for outdoor activities.

Q: What are the GPS coordinates used for the weather forecast in Decatur?

The weather forecast for Decatur uses coordinates 40.8306, -84.9291.

Indiana, United States · Real-time conditions & 3-day outlook

22^°C

Feels like 25°C

72°F / Feels 76°F

Partly cloudy

Decatur, Indiana

🌞 Daytime

Updated: 2026-04-16 13:15

💧

Humidity

65%

💨

Wind

27.4 km/h SW

🌬️

Wind Gust

32.3 km/h

🌡️

Pressure

1012 mb

👁️

Visibility

16 km

☀️

UV Index

6.5 (High)

🌧️

Precipitation

0 mm

☁️

Cloud Cover

75%

💦

Dew Point

15.1°C

🌐

Wind Degree

235°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)

145.9 μg/m³

NO₂

1.9 μg/m³

O₃

109 μg/m³

SO₂

1.5 μg/m³

PM 2.5

6 μg/m³

PM 10

7.4 μg/m³

Weather Alerts 3

Met · Severe · Immediate

Flood Warning issued April 15 at 10:59PM EDT by NWS Northern Indiana

...The Flood Warning is extended for the following rivers in Indiana...Ohio... Tippecanoe River near Ora affecting Pulaski County. Saint Joseph River Ohio near Newville affecting Allen IN, Defiance and De Kalb Counties. Saint Joseph River Ohio below Montpelier affecting Williams County. Tiffin River at Stryker affecting Fulton OH, Defiance and Williams Counties. ...The Flood Warning continues...

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Caution is urged when walking near riverbanks. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Detailed river forecasts and additional information can be f...

Effective: 2026-04-15T22:59:00-04:00 · Expires: 2026-04-16T17:00:00-04:00

Met · Severe · Immediate

Flood Warning issued April 15 at 10:35PM EDT until April 19 at 12:48AM EDT by NWS Northern Indiana

...The Flood Warning continues for the following rivers in Indiana... Eel River at North Manchester affecting Whitley, Miami, Wabash, Kosciusko and Cass IN Counties. .Excessive runoff from recent heavy rainfall continues to cause Minor to Moderate flooding on many rivers across the area. Additional heavy rain in the coming days could exacerbate the flooding. For the Eel River...including North...

Effective: 2026-04-15T22:35:00-04:00 · Expires: 2026-04-16T16:45:00-04:00

Met · Severe · Immediate

Flood Warning issued April 15 at 10:59PM EDT by NWS Northern Indiana

Effective: 2026-04-15T22:59:00-04:00 · Expires: 2026-04-16T17:00:00-04:00

Today's Hourly Forecast

24-hour breakdown for Decatur, Indiana

12 AM

20°

Clear

💧 77% 💨 23.8 km/h

1 AM

20°

Clear

💧 72% 💨 23 km/h

2 AM

19°

Clear

💧 74% 💨 20.9 km/h

3 AM

19°

Clear

💧 75% 💨 21.2 km/h

4 AM

19°

Patchy rain nearby

💧 78% 💨 21.6 km/h 🌧️ 100%

5 AM

18°

Clear

💧 80% 💨 10.4 km/h

6 AM

18°

Patchy rain nearby

💧 84% 💨 10.4 km/h 🌧️ 81%

7 AM

18°

Patchy rain nearby

💧 86% 💨 14.8 km/h 🌧️ 81%

8 AM

18°

Overcast

💧 89% 💨 15.5 km/h

9 AM

19°

Patchy rain nearby

💧 88% 💨 15.5 km/h 🌧️ 77%

10 AM

20°

Sunny

💧 78% 💨 18.7 km/h

11 AM

20°

Sunny

💧 79% 💨 20.5 km/h

12 PM

21°

Partly Cloudy

💧 73% 💨 20.9 km/h

1 PM

22°

Partly cloudy

💧 65% 💨 27.4 km/h

2 PM

23°

Partly Cloudy

💧 60% 💨 30.2 km/h

3 PM

24°

Sunny

💧 54% 💨 32.4 km/h

4 PM

24°

Sunny

💧 45% 💨 29.9 km/h

5 PM

25°

Sunny

💧 47% 💨 26.3 km/h

6 PM

24°

Sunny

💧 48% 💨 26.3 km/h

7 PM

22°

Sunny

💧 58% 💨 24.8 km/h

8 PM

20°

Sunny

💧 63% 💨 18.7 km/h

9 PM

19°

Clear

💧 70% 💨 14 km/h

10 PM

17°

Clear

💧 81% 💨 10.1 km/h

11 PM

16°

Clear

💧 88% 💨 9 km/h

3-Day Forecast

Daily overview for Decatur, Indiana

Today

Patchy rain nearby

25° / 16°

🌧️ 81% chance of rain

💧 Avg. humidity: 71%

💨 Max wind: 32.4 km/h

🌧️ Total precip: 0.16 mm

☀️ UV Index: 1.6

🌅 Sunrise: 06:59 AM

🌇 Sunset: 08:20 PM

🌙 Waning Crescent

🌑 Moon: 3% lit

Fri, Apr 17

Mist

26° / 11°

🌧️ 0% chance of rain

💧 Avg. humidity: 79%

💨 Max wind: 22.3 km/h

🌧️ Total precip: 0.01 mm

☀️ UV Index: 1.7

🌅 Sunrise: 06:58 AM

🌇 Sunset: 08:21 PM

🌙 New Moon

🌑 Moon: 0% lit

Sat, Apr 18

Moderate rain

19° / 7°

🌧️ 89% chance of rain

💧 Avg. humidity: 79%

💨 Max wind: 34.9 km/h

🌧️ Total precip: 19.91 mm

☀️ UV Index: 0.6

🌅 Sunrise: 06:56 AM

🌇 Sunset: 08:22 PM

🌙 Waxing Crescent

🌑 Moon: 1% lit

Best Time to Visit Decatur

Plan your trip to Decatur, United States around the most favorable weather conditions.

Peak Season

June – September

Warm, dry summers — ideal for outdoor activities.

Shoulder Season

April – May, October

Fewer crowds, moderate prices, mild weather.

Off Season

November – March

Cooler temperatures; some regions may experience rain or snow.

← Back to Decatur 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in Decatur?

Current conditions in Decatur: Partly cloudy, temperature 22°C, humidity 65%.

What is the best time to visit Decatur?

The best time to visit Decatur is typically June – September. Warm, dry summers — ideal for outdoor activities.

What is the climate like in Decatur?

Decatur is located at approximately 40.8° latitude. It has a temperate climate with warm summers and cold winters.

Does it rain a lot in Decatur?

The wettest period in Decatur is typically during November – March. Cooler temperatures; some regions may experience rain or snow.

What should I pack for a trip to Decatur?

For visits to Decatur during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.

What country is Decatur in?

Decatur is located in United States, in the state of Indiana.

What are the public holidays in Decatur in 2026?

View the 2026 public holidays for Decatur on our Holidays page.

What are the GPS coordinates used for the weather forecast in Decatur?

The weather forecast for Decatur uses coordinates 40.8306, -84.9291.