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Current weather in Vandalia is broken clouds.

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Is the weather forecast for Vandalia updated regularly?

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

Now · 12:04 PM

Vandalia Weather & Hourly Forecast

United States · Illinois · 62471

69°F

Mostly cloudy

Feels like: 66°F

💧 Humidity 64% 🌡 Pressure 30.18 inHg 💨 Wind 8 mph 👁 Visibility 20.9 mi ☁ Clouds 93% ☀️ UV index 3.1 · Moderate 🌅 Sunrise 6:43 AM 🌇 Sunset 6:55 PM

Hourly Forecast for Vandalia

Today

1:00 PM

Overcast

70° 💧 None 💨 8 mph H 61%30.18 inHg

4:00 PM

Overcast

71° 💧 None 💨 9 mph H 59%30.12 inHg

7:00 PM

Overcast night

68° 💧 None 💨 9 mph H 62%30.15 inHg

10:00 PM

Mostly clear night

65° 💧 None 💨 9 mph H 66%30.21 inHg

Tomorrow

1:00 AM

Overcast night

62° 💧 None 💨 8 mph H 77%30.21 inHg

4:00 AM

Overcast night

63° 💧 0.001 in 💨 7 mph H 79%30.21 inHg

7:00 AM

Overcast

62° 💧 0.001 in 💨 8 mph H 79%30.24 inHg

10:00 AM

Overcast

66° 💧 None 💨 9 mph H 71%30.27 inHg

1:00 PM

Overcast

68° 💧 0.001 in 💨 9 mph H 67%30.24 inHg

4:00 PM

Overcast

70° 💧 0.001 in 💨 9 mph H 64%30.21 inHg

7:00 PM

Overcast night

67° 💧 None 💨 8 mph H 69%30.24 inHg

10:00 PM

Overcast night

65° 💧 None 💨 8 mph H 75%30.24 inHg

Thursday

1:00 AM

Overcast night

63° 💧 None 💨 6 mph H 79%30.24 inHg

4:00 AM

Overcast night

61° 💧 None 💨 6 mph H 84%30.24 inHg

7:00 AM

Mostly cloudy

59° 💧 None 💨 6 mph H 88%30.27 inHg

10:00 AM

Mostly cloudy

66° 💧 None 💨 6 mph H 74%30.27 inHg

Today

1:00 PM

Overcast

70° 💧 None 💨 8 mph H 61%30.18 inHg

2:00 PM

Overcast

71° 💧 None 💨 8 mph H 60%30.15 inHg

3:00 PM

Overcast

71° 💧 None 💨 8 mph H 60%30.15 inHg

4:00 PM

Overcast

71° 💧 None 💨 9 mph H 59%30.12 inHg

5:00 PM

Overcast

70° 💧 None 💨 10 mph H 59%30.12 inHg

6:00 PM

Overcast

69° 💧 None 💨 9 mph H 60%30.12 inHg

7:00 PM

Overcast night

68° 💧 None 💨 9 mph H 62%30.15 inHg

8:00 PM

Overcast night

67° 💧 None 💨 9 mph H 62%30.15 inHg

9:00 PM

Mostly cloudy night

66° 💧 None 💨 9 mph H 63%30.18 inHg

10:00 PM

Mostly clear night

65° 💧 None 💨 9 mph H 66%30.21 inHg

11:00 PM

Partly cloudy night

63° 💧 None 💨 7 mph H 71%30.21 inHg

Tomorrow

12:00 AM

Mostly cloudy night

62° 💧 None 💨 7 mph H 75%30.21 inHg

1:00 AM

Overcast night

62° 💧 None 💨 8 mph H 77%30.21 inHg

2:00 AM

Overcast night

63° 💧 None 💨 8 mph H 78%30.21 inHg

3:00 AM

Overcast night

63° 💧 None 💨 7 mph H 79%30.21 inHg

4:00 AM

Overcast night

63° 💧 None 💨 7 mph H 79%30.21 inHg

5:00 AM

Overcast night

62° 💧 0.001 in 💨 7 mph H 79%30.21 inHg

6:00 AM

Overcast night

62° 💧 None 💨 7 mph H 79%30.21 inHg

7:00 AM

Overcast

62° 💧 None 💨 8 mph H 79%30.24 inHg

8:00 AM

Partly cloudy

62° 💧 None 💨 8 mph H 78%30.24 inHg

9:00 AM

Mostly cloudy

64° 💧 0.001 in 💨 8 mph H 74%30.27 inHg

10:00 AM

Overcast

66° 💧 None 💨 9 mph H 71%30.27 inHg

11:00 AM

Overcast

67° 💧 None 💨 9 mph H 69%30.27 inHg

12:00 PM

Overcast

68° 💧 None 💨 9 mph H 67%30.27 inHg

1:00 PM

Overcast

68° 💧 None 💨 9 mph H 67%30.24 inHg

2:00 PM

Overcast

69° 💧 None 💨 9 mph H 64%30.24 inHg

3:00 PM

Overcast

70° 💧 0.001 in 💨 9 mph H 63%30.21 inHg

4:00 PM

Overcast

70° 💧 0.001 in 💨 9 mph H 64%30.21 inHg

5:00 PM

Overcast

69° 💧 None 💨 9 mph H 65%30.21 inHg

6:00 PM

Overcast

68° 💧 None 💨 9 mph H 67%30.21 inHg

7:00 PM

Overcast night

67° 💧 None 💨 8 mph H 69%30.24 inHg

8:00 PM

Overcast night

66° 💧 None 💨 8 mph H 71%30.24 inHg

9:00 PM

Overcast night

66° 💧 None 💨 9 mph H 72%30.24 inHg

10:00 PM

Overcast night

65° 💧 None 💨 8 mph H 75%30.24 inHg

11:00 PM

Overcast night

64° 💧 None 💨 8 mph H 77%30.24 inHg

Thursday

12:00 AM

Overcast night

64° 💧 None 💨 7 mph H 78%30.24 inHg

1:00 AM

Overcast night

63° 💧 None 💨 6 mph H 79%30.24 inHg

2:00 AM

Overcast night

63° 💧 None 💨 6 mph H 81%30.24 inHg

3:00 AM

Overcast night

62° 💧 None 💨 6 mph H 81%30.24 inHg

4:00 AM

Overcast night

61° 💧 None 💨 6 mph H 84%30.24 inHg

5:00 AM

Overcast night

60° 💧 None 💨 6 mph H 86%30.24 inHg

6:00 AM

Overcast night

60° 💧 None 💨 6 mph H 87%30.24 inHg

7:00 AM

Mostly cloudy

59° 💧 None 💨 6 mph H 88%30.27 inHg

8:00 AM

Overcast

61° 💧 None 💨 6 mph H 85%30.27 inHg

9:00 AM

Overcast

63° 💧 None 💨 6 mph H 79%30.27 inHg

10:00 AM

Mostly cloudy

66° 💧 None 💨 6 mph H 74%30.27 inHg

11:00 AM

Partly cloudy

68° 💧 None 💨 5 mph H 69%30.27 inHg

12:00 PM

Mostly cloudy

71° 💧 None 💨 6 mph H 61%30.24 inHg

1:00 PM

Overcast

73° 💧 None 💨 6 mph H 58%30.21 inHg

2:00 PM

Overcast

73° 💧 None 💨 6 mph H 58%30.21 inHg

3:00 PM

Overcast

74° 💧 None 💨 6 mph H 56%30.18 inHg

4:00 PM

Overcast

73° 💧 None 💨 7 mph H 57%30.18 inHg

5:00 PM

Overcast

73° 💧 None 💨 7 mph H 59%30.18 inHg

6:00 PM

Overcast

72° 💧 None 💨 6 mph H 62%30.18 inHg

7:00 PM

Overcast night

70° 💧 None 💨 4 mph H 66%30.18 inHg

Friday

4:00 AM

Overcast night

62° 💧 None 💨 6 mph H 90%30.21 inHg

7:00 AM

Overcast

63° 💧 None 💨 6 mph H 84%30.24 inHg

10:00 AM

Overcast

65° 💧 None 💨 6 mph H 75%30.27 inHg

1:00 PM

Partly cloudy

72° 💧 None 💨 6 mph H 54%30.24 inHg

4:00 PM

Mostly cloudy

74° 💧 None 💨 6 mph H 50%30.18 inHg

7:00 PM

Partly cloudy night

68° 💧 None 💨 6 mph H 57%30.18 inHg

10:00 PM

Overcast night

62° 💧 None 💨 5 mph H 66%30.21 inHg

Saturday

1:00 AM

Overcast night

62° 💧 None 💨 7 mph H 56%30.18 inHg

4:00 AM

Overcast night

58° 💧 None 💨 7 mph H 66%30.18 inHg

7:00 AM

Overcast

55° 💧 None 💨 6 mph H 75%30.18 inHg

10:00 AM

Partly cloudy

64° 💧 None 💨 6 mph H 60%30.21 inHg

1:00 PM

Overcast

69° 💧 None 💨 5 mph H 47%30.18 inHg

4:00 PM

Overcast

71° 💧 None 💨 3 mph H 45%30.12 inHg

7:00 PM

Overcast night

66° 💧 None 💨 3 mph H 59%30.12 inHg

10:00 PM

Overcast night

65° 💧 None 💨 6 mph H 59%30.09 inHg

Sunday

1:00 AM

Overcast night

63° 💧 None 💨 5 mph H 64%30.09 inHg

4:00 AM

Overcast night

62° 💧 None 💨 6 mph H 67%30.09 inHg

7:00 AM

Partly cloudy

60° 💧 None 💨 6 mph H 70%30.09 inHg

10:00 AM

Mostly sunny

68° 💧 None 💨 6 mph H 56%30.09 inHg

1:00 PM

Partly cloudy

76° 💧 None 💨 4 mph H 41%30.06 inHg

4:00 PM

Partly cloudy

76° 💧 None 💨 5 mph H 45%30.00 inHg

7:00 PM

Clear night

69° 💧 None 💨 5 mph H 61%29.97 inHg

10:00 PM

Clear night

64° 💧 None 💨 5 mph H 67%30.00 inHg

Monday

1:00 AM

Partly cloudy night

63° 💧 None 💨 4 mph H 67%30.00 inHg

7:00 AM

Mostly sunny

61° 💧 None 💨 4 mph H 68%30.00 inHg

1:00 PM

Sunny

54° 💧 None 💨 4 mph H 85%30.00 inHg

7:00 PM

Clear night

75° 💧 None 💨 3 mph H 40%29.97 inHg

Tuesday

1:00 AM

Clear night

68° 💧 None 💨 4 mph H 48%29.91 inHg

7:00 AM

Sunny

58° 💧 None 💨 4 mph H 69%29.94 inHg

1:00 PM

Sunny

53° 💧 None 💨 6 mph H 85%29.97 inHg

7:00 PM

Clear night

77° 💧 None 💨 5 mph H 34%29.97 inHg

Wednesday

1:00 AM

Clear night

69° 💧 None 💨 5 mph H 49%29.91 inHg

7:00 AM

Mostly sunny

61° 💧 None 💨 6 mph H 61%29.94 inHg

1:00 PM

Mostly sunny

58° 💧 None 💨 8 mph H 76%29.97 inHg

7:00 PM

Mostly clear night

82° 💧 None 💨 10 mph H 33%29.97 inHg

Thursday

1:00 AM

Partly cloudy night

74° 💧 None 💨 7 mph H 42%29.94 inHg

7:00 AM

Partly cloudy

67° 💧 None 💨 9 mph H 62%30.00 inHg

1:00 PM

Overcast

64° 💧 None 💨 9 mph H 71%30.06 inHg

7:00 PM

Overcast night

86° 💧 None 💨 8 mph H 34%30.06 inHg

Friday

1:00 AM

Overcast night

77° 💧 None 💨 6 mph H 41%30.03 inHg

7:00 AM

Overcast

71° 💧 None 💨 7 mph H 51%30.06 inHg

1:00 PM

Overcast

70° 💧 None 💨 7 mph H 53%30.09 inHg

7:00 PM

Overcast night

87° 💧 None 💨 10 mph H 35%30.09 inHg

Saturday

1:00 AM

Partly cloudy night

78° 💧 None 💨 7 mph H 48%30.03 inHg

7:00 AM

Partly cloudy

74° 💧 None 💨 7 mph H 53%30.03 inHg

1:00 PM

Mostly sunny

71° 💧 None 💨 8 mph H 59%30.06 inHg

7:00 PM

Overcast night

82° 💧 None 💨 9 mph H 48%30.03 inHg

Sunday

1:00 AM

Overcast night

78° 💧 None 💨 9 mph H 49%29.97 inHg

7:00 AM

Light rain

68° 💧 None 💨 8 mph H 95%29.97 inHg

1:00 PM

Light rain

68° 💧 None 💨 6 mph H 98%29.94 inHg

7:00 PM

Light rain

74° 💧 None 💨 6 mph H 92%29.94 inHg

Monday

1:00 AM

Moderate rain

71° 💧 None 💨 3 mph H 98%29.94 inHg

7:00 AM

Overcast

66° 💧 None 💨 11 mph H 86%30.03 inHg

1:00 PM

Overcast

66° 💧 None 💨 9 mph H 81%30.09 inHg

7:00 PM

Mostly cloudy night

70° 💧 None 💨 10 mph H 48%30.12 inHg

Tuesday

1:00 AM

Mostly clear night

65° 💧 None 💨 7 mph H 52%30.09 inHg

7:00 AM

Overcast

60° 💧 None 💨 6 mph H 62%30.09 inHg

1:00 PM

Light rain

55° 💧 None 💨 5 mph H 93%30.09 inHg

7:00 PM

Clear night

68° 💧 None 💨 7 mph H 60%30.03 inHg

Wednesday

1:00 AM

Clear night

63° 💧 None 💨 6 mph H 63%30.03 inHg

In Vandalia 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 Vandalia

TomorrowTomorrow

Mostly cloudy 70°/62° 💧 None 💨 9 mph

Thursday, Sep 24Thu Sep 24

Overcast 74°/59° 💧 None 💨 7 mph

Friday, Sep 25Fri Sep 25

Overcast 74°/62° 💧 0.005 in 💨 6 mph

Saturday, Sep 26Sat Sep 26

Overcast 71°/55° 💧 None 💨 7 mph

Sunday, Sep 27Sun Sep 27

Overcast 76°/60° 💧 None 💨 6 mph

Monday, Sep 28Mon Sep 28

Partly cloudy 75°/54° 💧 0.034 in 💨 4 mph

Tuesday, Sep 29Tue Sep 29

Sunny 77°/53° 💧 None 💨 6 mph

Wednesday, Sep 30Wed Sep 30

Mostly sunny 82°/58° 💧 None 💨 10 mph

Thursday, Oct 1Thu Oct 1

Partly cloudy 86°/64° 💧 None 💨 9 mph

Friday, Oct 2Fri Oct 2

Overcast 87°/70° 💧 None 💨 10 mph

Saturday, Oct 3Sat Oct 3

Partly cloudy 82°/71° 💧 None 💨 9 mph

Sunday, Oct 4Sun Oct 4

Light rain 78°/68° 💧 0.384 in 💨 9 mph

Monday, Oct 5Mon Oct 5

Moderate rain 71°/66° 💧 0.310 in 💨 11 mph

Tuesday, Oct 6Tue Oct 6

Light rain 68°/55° 💧 0.310 in 💨 7 mph

Wednesday, Oct 7Wed Oct 7

Sunny 63°/63° 💧 None 💨 6 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Vandalia

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Vandalia

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 1:00 PM

PM2.5 Fine particles Good 3,8µg/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 4,7µg/m³

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

O₃ Ozone Fair 61,6µg/m³

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

NO₂ Nitrogen dioxide Good 3,0µg/m³

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

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Vandalia

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 3,7Moderate 🙂Fair

Tomorrow UV 4,9Moderate 🙂Fair

Thursday UV 4,7Moderate 🙂Fair

Friday UV 6,0High 🙂Fair

Saturday UV 4,0Moderate 🙂Fair

Sunday UV 5,0Moderate —Unavailable

Monday UV 6,0High —Unavailable

Hourly UV index today

1:00 PMUV 3,7 2:00 PMUV 3,2 3:00 PMUV 1,6 4:00 PMUV 0,8 5:00 PMUV 0,3 6:00 PMUV 0,1 7:00 PMUV 0,0

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

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

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 Vandalia

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · VANDALIA, ILLINOIS

Tonight's Stargazing & Shooting Stars

Good observing conditions. Best local viewing window: 10:00 PM–11:00 PM.

72/100Best-hour score

BEST TIME TONIGHT 10:00 PM–11:00 PM Astronomical darkness: 8:23 PM–5:16 AM

☁ Cloud cover 26% Real hourly forecast for the best viewing hour.

☾ Moonlight 87% Waxing Gibbous · Moon about 34° above the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 6° 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 min6%

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 Vandalia were last refreshed today at 12:04 PM. The current forecast period extends through 24/09/2026 at 10:00 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.