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As of 16:10 CDT

Weather in Vandalia, IL

77°Current weather

Vandalia, Sunday, 25 October, 16:10

Overcast. Feels like 76°. High 77°, low 47°.

Pressure30.33 inHg
Wind1 mph E
Humidity35%
Visibility6.2 mi
Dew point49°
Mon, 2676° / 53°0Overcast
76 °Overcast

Vandalia, Monday, 26 October

Overcast. High 76°, low 53°.

Pressure30.33 inHg
Wind4.5 mph SW
Humidity51%
Visibility6.2 mi
Dew point52°
Tue, 2771° / 50°0Overcast
71 °Overcast

Vandalia, Tuesday, 27 October

Overcast. High 71°, low 50°.

Pressure30.27 inHg
Wind6 mph S
Humidity57%
Visibility6.2 mi
Dew point52°
Wed, 2872° / 51°0Overcast
72 °Overcast

Vandalia, Wednesday, 28 October

Overcast. High 72°, low 51°.

Pressure30.21 inHg
Wind6 mph S
Humidity59%
Visibility6.2 mi
Dew point52°
Thu, 2977° / 56°0.01Light rain
77 °Light rain

Vandalia, Thursday, 29 October

Light rain. High 77°, low 56°.

Pressure30.12 inHg
Wind9 mph SW
Humidity53%
Visibility6.2 mi
Dew point54°
Fri, 3075° / 57°0.01Light rain
75 °Light rain

Vandalia, Friday, 30 October

Light rain. High 75°, low 57°.

Pressure30.15 inHg
Wind6.2 mph SW
Humidity67%
Visibility—
Dew point60°
Sat, 3166° / 59°0.09Light rain
66 °Light rain

Vandalia, Saturday, 31 October

Light rain. High 66°, low 59°.

Pressure30.21 inHg
Wind7.5 mph E
Humidity68%
Visibility—
Dew point53°
Sun, 0163° / 58°0.12Light rain
63 °Light rain

Vandalia, Sunday, 1 November

Light rain. High 63°, low 58°.

Pressure30.15 inHg
Wind7.5 mph SE
Humidity88%
Visibility—
Dew point56°
Mon, 0263° / 58°0Overcast
63 °Overcast

Vandalia, Monday, 2 November

Overcast. High 63°, low 58°.

Pressure30.09 inHg
Wind8.5 mph E
Humidity75%
Visibility—
Dew point54°
Tue, 0369° / 52°0Overcast
69 °Overcast

Vandalia, Tuesday, 3 November

Overcast. High 69°, low 52°.

Pressure30.03 inHg
Wind13.1 mph E
Humidity56%
Visibility—
Dew point49°
Wed, 0469° / 51°0Overcast
69 °Overcast

Vandalia, Wednesday, 4 November

Overcast. High 69°, low 51°.

Pressure30.03 inHg
Wind8.6 mph SE
Humidity45%
Visibility—
Dew point43°
Thu, 0567° / 53°0.01Light rain
67 °Light rain

Vandalia, Thursday, 5 November

Light rain. High 67°, low 53°.

Pressure29.94 inHg
Wind4.9 mph SE
Humidity53%
Visibility—
Dew point46°
Fri, 0668° / 52°0Overcast
68 °Overcast

Vandalia, Friday, 6 November

Overcast. High 68°, low 52°.

Pressure29.91 inHg
Wind5.7 mph E
Humidity52%
Visibility—
Dew point47°
Sat, 0772° / 53°0Overcast
72 °Overcast

Vandalia, Saturday, 7 November

Overcast. High 72°, low 53°.

Pressure29.83 inHg
Wind12.9 mph SW
Humidity38%
Visibility—
Dew point42°
Sun, 0867° / 52°0.04Light rain
67 °Light rain

Vandalia, Sunday, 8 November

Light rain. High 67°, low 52°.

Pressure29.77 inHg
Wind12.1 mph W
Humidity30%
Visibility—
Dew point32°
Mon, 0957° / 46°0Clear
57 °Clear

Vandalia, Monday, 9 November

Clear. High 57°, low 46°.

Pressure29.62 inHg
Wind22 mph W
Humidity27%
Visibility—
Dew point22°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Vandalia, IL are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Vandalia, IL since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.