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As of 02:34 CDT

Weather in Vandalia, IL

58°Current weather

Vandalia, Monday, 26 October, 02:34

Overcast. Feels like 57°. High 77°, low 54°.

Pressure30.33 inHg
Wind1 mph E
Humidity68%
Visibility6.2 mi
Dew point48°
Tue, 2774° / 51°0Overcast
74 °Overcast

Vandalia, Tuesday, 27 October

Overcast. High 74°, low 51°.

Pressure30.27 inHg
Wind4.9 mph S
Humidity58%
Visibility6.2 mi
Dew point53°
Wed, 2873° / 54°0Clear
73 °Clear

Vandalia, Wednesday, 28 October

Clear. High 73°, low 54°.

Pressure30.21 inHg
Wind6.8 mph S
Humidity51%
Visibility6.2 mi
Dew point52°
Thu, 2977° / 54°0Clear
77 °Clear

Vandalia, Thursday, 29 October

Clear. High 77°, low 54°.

Pressure30.15 inHg
Wind7.4 mph SW
Humidity53%
Visibility6.2 mi
Dew point53°
Fri, 3076° / 56°0Overcast
76 °Overcast

Vandalia, Friday, 30 October

Overcast. High 76°, low 56°.

Pressure30.15 inHg
Wind6.3 mph SE
Humidity53%
Visibility—
Dew point54°
Sat, 3172° / 59°0Overcast
72 °Overcast

Vandalia, Saturday, 31 October

Overcast. High 72°, low 59°.

Pressure30.15 inHg
Wind8.2 mph E
Humidity56%
Visibility—
Dew point51°
Sun, 0166° / 58°0.3Rain
66 °Rain

Vandalia, Sunday, 1 November

Rain. High 66°, low 58°.

Pressure30.00 inHg
Wind13.8 mph NE
Humidity57%
Visibility—
Dew point49°
Mon, 0261° / 56°0.24Rain
61 °Rain

Vandalia, Monday, 2 November

Rain. High 61°, low 56°.

Pressure29.85 inHg
Wind14 mph N
Humidity82%
Visibility—
Dew point53°
Tue, 0367° / 51°0Mostly clear
67 °Mostly clear

Vandalia, Tuesday, 3 November

Mostly clear. High 67°, low 51°.

Pressure30.06 inHg
Wind6.8 mph N
Humidity37%
Visibility—
Dew point37°
Wed, 0461° / 47°0Overcast
61 °Overcast

Vandalia, Wednesday, 4 November

Overcast. High 61°, low 47°.

Pressure30.21 inHg
Wind15.5 mph NE
Humidity35%
Visibility—
Dew point32°
Thu, 0553° / 39°0Overcast
53 °Overcast

Vandalia, Thursday, 5 November

Overcast. High 53°, low 39°.

Pressure30.45 inHg
Wind11.4 mph NE
Humidity37%
Visibility—
Dew point25°
Fri, 0656° / 35°0Clear
56 °Clear

Vandalia, Friday, 6 November

Clear. High 56°, low 35°.

Pressure30.24 inHg
Wind10.7 mph S
Humidity30%
Visibility—
Dew point21°
Sat, 0761° / 45°0.09Light rain
61 °Light rain

Vandalia, Saturday, 7 November

Light rain. High 61°, low 45°.

Pressure29.94 inHg
Wind18.6 mph S
Humidity50%
Visibility—
Dew point40°
Sun, 0862° / 45°0.03Light rain
62 °Light rain

Vandalia, Sunday, 8 November

Light rain. High 62°, low 45°.

Pressure30.12 inHg
Wind18.4 mph NW
Humidity47%
Visibility—
Dew point39°
Mon, 0956° / 37°0Clear
56 °Clear

Vandalia, Monday, 9 November

Clear. High 56°, low 37°.

Pressure30.33 inHg
Wind7.9 mph S
Humidity41%
Visibility—
Dew point28°
Tue, 1069° / 45°0Overcast
69 °Overcast

Vandalia, Tuesday, 10 November

Overcast. High 69°, low 45°.

Pressure29.94 inHg
Wind15.3 mph SW
Humidity41%
Visibility—
Dew point41°

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.