What is the weather in Decatur right now?

Current weather in Decatur is overcast clouds.

Where can I find the hourly weather forecast for Decatur?

This page shows hourly weather forecast for Decatur, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Decatur updated regularly?

Weather data for Decatur is updated regularly with the latest available observations and forecasts.

Now · 5:06 AM

Decatur Weather & Hourly Forecast

United States · Illinois · 62526

60°F

Overcast night

Feels like: 58°F

💧 Humidity 83% 🌡 Pressure 30.24 inHg 💨 Wind 7 mph 👁 Visibility 17.3 mi ☁ Clouds 98% ☀️ UV index 0.0 · Low 🌅 Sunrise 6:43 AM 🌇 Sunset 6:52 PM

Hourly Forecast for Decatur

Today

6:00 AM

Overcast night

60° 💧 0.006 in 💨 8 mph H 84%30.27 inHg

9:00 AM

Partly cloudy

61° 💧 0.001 in 💨 9 mph H 81%30.30 inHg

12:00 PM

Mostly cloudy

67° 💧 None 💨 11 mph H 65%30.30 inHg

3:00 PM

Overcast

69° 💧 None 💨 11 mph H 60%30.24 inHg

6:00 PM

Overcast

66° 💧 None 💨 10 mph H 67%30.24 inHg

9:00 PM

Overcast night

63° 💧 None 💨 8 mph H 76%30.27 inHg

Tomorrow

12:00 AM

Clear night

62° 💧 0.001 in 💨 8 mph H 81%30.27 inHg

3:00 AM

Mostly clear night

59° 💧 None 💨 6 mph H 90%30.27 inHg

6:00 AM

Mostly clear night

57° 💧 None 💨 7 mph H 89%30.27 inHg

9:00 AM

Mostly sunny

61° 💧 None 💨 7 mph H 76%30.30 inHg

12:00 PM

Mostly sunny

69° 💧 None 💨 6 mph H 63%30.27 inHg

3:00 PM

Overcast

74° 💧 None 💨 6 mph H 56%30.21 inHg

6:00 PM

Mostly cloudy

71° 💧 None 💨 4 mph H 66%30.21 inHg

9:00 PM

Mostly cloudy night

65° 💧 None 💨 5 mph H 79%30.21 inHg

Friday

12:00 AM

Clear night

64° 💧 None 💨 6 mph H 84%30.24 inHg

3:00 AM

Mostly cloudy night

60° 💧 None 💨 5 mph H 90%30.24 inHg

Today

6:00 AM

Overcast night

60° 💧 None 💨 8 mph H 84%30.27 inHg

7:00 AM

Overcast

60° 💧 0.001 in 💨 8 mph H 85%30.27 inHg

8:00 AM

Light rain

60° 💧 0.004 in 💨 8 mph H 86%30.30 inHg

9:00 AM

Partly cloudy

61° 💧 0.001 in 💨 9 mph H 81%30.30 inHg

10:00 AM

Mostly cloudy

64° 💧 None 💨 9 mph H 73%30.30 inHg

11:00 AM

Mostly cloudy

66° 💧 None 💨 10 mph H 68%30.30 inHg

12:00 PM

Mostly cloudy

67° 💧 None 💨 11 mph H 65%30.30 inHg

1:00 PM

Overcast

68° 💧 None 💨 11 mph H 62%30.27 inHg

2:00 PM

Overcast

69° 💧 None 💨 11 mph H 60%30.27 inHg

3:00 PM

Overcast

69° 💧 None 💨 11 mph H 60%30.24 inHg

4:00 PM

Overcast

68° 💧 None 💨 11 mph H 61%30.24 inHg

5:00 PM

Overcast

68° 💧 None 💨 11 mph H 64%30.24 inHg

6:00 PM

Overcast

66° 💧 None 💨 10 mph H 67%30.24 inHg

7:00 PM

Overcast night

65° 💧 None 💨 9 mph H 70%30.27 inHg

8:00 PM

Overcast night

64° 💧 None 💨 9 mph H 73%30.27 inHg

9:00 PM

Overcast night

63° 💧 None 💨 8 mph H 76%30.27 inHg

10:00 PM

Overcast night

63° 💧 None 💨 8 mph H 77%30.30 inHg

11:00 PM

Overcast night

63° 💧 None 💨 8 mph H 80%30.27 inHg

Tomorrow

12:00 AM

Clear night

62° 💧 None 💨 8 mph H 81%30.27 inHg

1:00 AM

Clear night

60° 💧 None 💨 7 mph H 87%30.27 inHg

2:00 AM

Mostly clear night

59° 💧 0.001 in 💨 6 mph H 90%30.27 inHg

3:00 AM

Mostly clear night

59° 💧 None 💨 6 mph H 90%30.27 inHg

4:00 AM

Clear night

58° 💧 None 💨 6 mph H 91%30.27 inHg

5:00 AM

Clear night

57° 💧 None 💨 7 mph H 91%30.27 inHg

6:00 AM

Mostly clear night

57° 💧 None 💨 7 mph H 89%30.27 inHg

7:00 AM

Mostly sunny

56° 💧 None 💨 7 mph H 87%30.27 inHg

8:00 AM

Sunny

58° 💧 None 💨 6 mph H 83%30.30 inHg

9:00 AM

Mostly sunny

61° 💧 None 💨 7 mph H 76%30.30 inHg

10:00 AM

Partly cloudy

64° 💧 None 💨 7 mph H 70%30.30 inHg

11:00 AM

Partly cloudy

67° 💧 None 💨 6 mph H 66%30.30 inHg

12:00 PM

Mostly sunny

69° 💧 None 💨 6 mph H 63%30.27 inHg

1:00 PM

Sunny

71° 💧 None 💨 6 mph H 61%30.24 inHg

2:00 PM

Partly cloudy

74° 💧 None 💨 6 mph H 57%30.24 inHg

3:00 PM

Overcast

74° 💧 None 💨 6 mph H 56%30.21 inHg

4:00 PM

Overcast

73° 💧 None 💨 6 mph H 58%30.21 inHg

5:00 PM

Mostly cloudy

72° 💧 None 💨 6 mph H 62%30.21 inHg

6:00 PM

Mostly cloudy

71° 💧 None 💨 4 mph H 66%30.21 inHg

7:00 PM

Overcast night

68° 💧 None 💨 4 mph H 74%30.21 inHg

8:00 PM

Partly cloudy night

67° 💧 None 💨 5 mph H 76%30.21 inHg

9:00 PM

Mostly cloudy night

65° 💧 None 💨 5 mph H 79%30.21 inHg

10:00 PM

Overcast night

64° 💧 None 💨 4 mph H 82%30.24 inHg

11:00 PM

Mostly cloudy night

65° 💧 None 💨 5 mph H 81%30.24 inHg

Friday

12:00 AM

Clear night

64° 💧 None 💨 6 mph H 84%30.24 inHg

1:00 AM

Clear night

62° 💧 None 💨 6 mph H 87%30.21 inHg

2:00 AM

Mostly clear night

61° 💧 None 💨 6 mph H 89%30.21 inHg

3:00 AM

Mostly cloudy night

60° 💧 None 💨 5 mph H 90%30.24 inHg

4:00 AM

Partly cloudy night

61° 💧 None 💨 5 mph H 88%30.24 inHg

5:00 AM

Overcast night

59° 💧 None 💨 5 mph H 91%30.24 inHg

6:00 AM

Overcast night

60° 💧 None 💨 6 mph H 88%30.24 inHg

7:00 AM

Overcast

60° 💧 None 💨 6 mph H 86%30.24 inHg

8:00 AM

Overcast

60° 💧 None 💨 5 mph H 84%30.27 inHg

9:00 AM

Overcast

61° 💧 None 💨 6 mph H 80%30.27 inHg

10:00 AM

Overcast

61° 💧 0.001 in 💨 6 mph H 77%30.27 inHg

11:00 AM

Overcast

62° 💧 None 💨 6 mph H 73%30.30 inHg

12:00 PM

Overcast

63° 💧 None 💨 5 mph H 70%30.27 inHg

1:00 PM

Overcast

63° 💧 None 💨 4 mph H 68%30.27 inHg

2:00 PM

Overcast

64° 💧 None 💨 5 mph H 65%30.24 inHg

3:00 PM

Overcast

66° 💧 None 💨 6 mph H 60%30.21 inHg

4:00 PM

Overcast

66° 💧 None 💨 7 mph H 58%30.21 inHg

5:00 PM

Overcast

65° 💧 None 💨 7 mph H 56%30.21 inHg

6:00 PM

Overcast

64° 💧 None 💨 6 mph H 57%30.21 inHg

7:00 PM

Overcast night

61° 💧 None 💨 5 mph H 63%30.21 inHg

10:00 PM

Overcast night

57° 💧 None 💨 6 mph H 73%30.21 inHg

Saturday

1:00 AM

Partly cloudy night

54° 💧 None 💨 6 mph H 80%30.21 inHg

4:00 AM

Overcast night

53° 💧 None 💨 7 mph H 80%30.18 inHg

7:00 AM

Partly cloudy

52° 💧 None 💨 6 mph H 86%30.21 inHg

10:00 AM

Mostly sunny

62° 💧 None 💨 7 mph H 65%30.21 inHg

1:00 PM

Overcast

71° 💧 None 💨 6 mph H 49%30.18 inHg

4:00 PM

Overcast

73° 💧 None 💨 6 mph H 44%30.09 inHg

7:00 PM

Overcast night

65° 💧 None 💨 5 mph H 59%30.09 inHg

10:00 PM

Overcast night

62° 💧 None 💨 7 mph H 67%30.12 inHg

Sunday

1:00 AM

Overcast night

61° 💧 None 💨 3 mph H 74%30.12 inHg

4:00 AM

Overcast night

60° 💧 None 💨 6 mph H 78%30.09 inHg

7:00 AM

Overcast

58° 💧 None 💨 5 mph H 82%30.09 inHg

10:00 AM

Partly cloudy

65° 💧 None 💨 6 mph H 67%30.09 inHg

1:00 PM

Mostly cloudy

72° 💧 None 💨 5 mph H 46%30.06 inHg

4:00 PM

Partly cloudy

75° 💧 None 💨 4 mph H 42%30.00 inHg

7:00 PM

Mostly clear night

67° 💧 None 💨 5 mph H 58%30.00 inHg

10:00 PM

Mostly clear night

62° 💧 None 💨 5 mph H 65%30.03 inHg

Monday

1:00 AM

Clear night

61° 💧 None 💨 5 mph H 76%30.03 inHg

4:00 AM

Clear night

58° 💧 None 💨 5 mph H 81%30.00 inHg

7:00 AM

Sunny

55° 💧 None 💨 5 mph H 87%30.03 inHg

10:00 AM

Sunny

67° 💧 None 💨 7 mph H 62%30.00 inHg

1:00 PM

Sunny

74° 💧 None 💨 5 mph H 43%29.97 inHg

4:00 PM

Sunny

76° 💧 None 💨 6 mph H 40%29.91 inHg

7:00 PM

Overcast night

68° 💧 None 💨 5 mph H 56%29.88 inHg

Tuesday

1:00 AM

Partly cloudy night

65° 💧 None 💨 7 mph H 60%29.88 inHg

7:00 AM

Overcast

61° 💧 None 💨 9 mph H 73%29.85 inHg

1:00 PM

Light rain

73° 💧 None 💨 7 mph H 73%29.80 inHg

7:00 PM

Light rain

69° 💧 None 💨 10 mph H 95%29.71 inHg

Wednesday

1:00 AM

Moderate rain

67° 💧 None 💨 10 mph H 96%29.65 inHg

7:00 AM

Moderate rain

68° 💧 None 💨 9 mph H 95%29.59 inHg

1:00 PM

Overcast

69° 💧 None 💨 9 mph H 87%29.62 inHg

7:00 PM

Overcast night

66° 💧 None 💨 9 mph H 86%29.65 inHg

Thursday

1:00 AM

Overcast night

63° 💧 None 💨 10 mph H 95%29.65 inHg

7:00 AM

Overcast

61° 💧 None 💨 9 mph H 92%29.71 inHg

1:00 PM

Partly cloudy

67° 💧 None 💨 11 mph H 60%29.80 inHg

7:00 PM

Overcast night

63° 💧 None 💨 11 mph H 56%29.85 inHg

Friday

1:00 AM

Clear night

54° 💧 None 💨 9 mph H 72%29.94 inHg

7:00 AM

Sunny

49° 💧 None 💨 8 mph H 82%30.03 inHg

1:00 PM

Sunny

62° 💧 None 💨 9 mph H 48%30.09 inHg

7:00 PM

Partly cloudy night

58° 💧 None 💨 5 mph H 63%30.09 inHg

Saturday

1:00 AM

Clear night

50° 💧 None 💨 3 mph H 87%30.12 inHg

7:00 AM

Overcast

49° 💧 None 💨 1 mph H 93%30.21 inHg

1:00 PM

Overcast

62° 💧 None 💨 4 mph H 50%30.24 inHg

7:00 PM

Partly cloudy night

59° 💧 None 💨 5 mph H 61%30.18 inHg

Sunday

1:00 AM

Partly cloudy night

50° 💧 None 💨 2 mph H 82%30.24 inHg

7:00 AM

Partly cloudy

49° 💧 None 💨 4 mph H 87%30.27 inHg

1:00 PM

Sunny

67° 💧 None 💨 6 mph H 48%30.24 inHg

7:00 PM

Mostly clear night

61° 💧 None 💨 5 mph H 68%30.18 inHg

Monday

1:00 AM

Overcast night

56° 💧 None 💨 9 mph H 73%30.18 inHg

7:00 AM

Partly cloudy

55° 💧 None 💨 10 mph H 79%30.15 inHg

1:00 PM

Overcast

73° 💧 None 💨 11 mph H 57%30.12 inHg

7:00 PM

Clear night

68° 💧 None 💨 9 mph H 72%30.06 inHg

Tuesday

1:00 AM

Clear night

63° 💧 None 💨 11 mph H 80%30.03 inHg

7:00 AM

Sunny

61° 💧 None 💨 10 mph H 83%30.03 inHg

1:00 PM

Sunny

77° 💧 None 💨 11 mph H 62%29.97 inHg

7:00 PM

Clear night

70° 💧 None 💨 12 mph H 68%29.97 inHg

Wednesday

1:00 AM

Clear night

56° 💧 None 💨 10 mph H 65%30.09 inHg

7:00 AM

Sunny

49° 💧 None 💨 8 mph H 67%30.15 inHg

1:00 PM

Sunny

60° 💧 None 💨 12 mph H 39%30.12 inHg

7:00 PM

Clear night

55° 💧 None 💨 11 mph H 48%30.09 inHg

In Decatur and, more broadly, across the state of Illinois: This morning begins with mostly cloudy skies and mild temperatures ranging from 60 to 69 degrees Fahrenheit. Winds will be coming from the northeast at around 11 mph, with gusts reaching up to 21 mph. As the day progresses into the afternoon, the cloud cover is expected to persist, but no precipitation is anticipated. Temperatures are likely to remain steady within the mild range, providing comfortable conditions for outdoor activities. Winds will continue from the northeast, maintaining a moderate breeze throughout the day. Overall, it will be a relatively calm day with partly cloudy skies and no significant weather disruptions.

15-Day Weather Outlook for Decatur

TomorrowTomorrow

Mostly sunny 74°/56° 💧 None 💨 8 mph

Friday, Sep 25Fri Sep 25

Mostly sunny 66°/57° 💧 0.004 in 💨 7 mph

Saturday, Sep 26Sat Sep 26

Partly cloudy 73°/52° 💧 0.008 in 💨 7 mph

Sunday, Sep 27Sun Sep 27

Overcast 75°/58° 💧 0.014 in 💨 6 mph

Monday, Sep 28Mon Sep 28

Overcast 76°/55° 💧 None 💨 7 mph

Tuesday, Sep 29Tue Sep 29

Light rain 73°/61° 💧 0.632 in 💨 10 mph

Wednesday, Sep 30Wed Sep 30

Moderate rain 69°/66° 💧 1.682 in 💨 10 mph

Thursday, Oct 1Thu Oct 1

Overcast 67°/61° 💧 0.066 in 💨 11 mph

Friday, Oct 2Fri Oct 2

Partly cloudy 62°/49° 💧 None 💨 9 mph

Saturday, Oct 3Sat Oct 3

Overcast 62°/49° 💧 None 💨 5 mph

Sunday, Oct 4Sun Oct 4

Partly cloudy 67°/49° 💧 None 💨 6 mph

Monday, Oct 5Mon Oct 5

Overcast 73°/55° 💧 None 💨 11 mph

Tuesday, Oct 6Tue Oct 6

Sunny 77°/61° 💧 0.002 in 💨 12 mph

Wednesday, Oct 7Wed Oct 7

Sunny 60°/49° 💧 None 💨 12 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Decatur

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Decatur

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 6:00 AM

PM2.5 Fine particles Good 3,2µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 3,7µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Good 52,1µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 3,6µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is favorable for outdoor activities.

UV & HEALTH

UV, Sun & Health Outlook in Decatur

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 5,2Moderate 😊Good

Tomorrow UV 5,6Moderate 🙂Fair

Friday UV 3,5Moderate 🙂Fair

Saturday UV 0,6Low 😐Moderate

Sunday UV 4,0Moderate 🙂Fair

Monday UV 5,0Moderate —Unavailable

Tuesday UV 5,0Moderate —Unavailable

Hourly UV index today

7:00 AMUV 0,0 8:00 AMUV 0,1 9:00 AMUV 0,4 10:00 AMUV 1,2 11:00 AMUV 2,9 12:00 PMUV 3,9 1:00 PMUV 5,2 2:00 PMUV 3,5 3:00 PMUV 2,3 4:00 PMUV 1,6 5:00 PMUV 0,7 6:00 PMUV 0,1

Today's weather health advice Open today's recommendations.

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Decatur

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · DECATUR, ILLINOIS

Tonight's Stargazing & Shooting Stars

Fair observing conditions. Best local viewing window: 9:00 AM–10:00 AM.

59/100Best-hour score

BEST TIME TONIGHT 9:00 AM–10:00 AM Astronomical darkness: 8:23 PM–5:14 AM

☁ Cloud cover 56% Real hourly forecast for the best viewing hour.

☾ Moonlight 90% Waxing Gibbous · Moon below the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 24° high at the best hour.

✦ Estimated visible meteors 0–1/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min29%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

ACTIVE NOW

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

NOV 6–NOV 30

LeonidsStart NOV 6 · Peak NOV 17 · End NOV 30 · ZHR 15 · 52% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

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Forecast data for Decatur were last refreshed today at 5:06 AM. The current forecast period extends through 25/09/2026 at 3:00 AM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.