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As of 07:59 CDT

Weather in Vandalia, IL

50°Current weather

Vandalia, Friday, 23 October, 07:59

Clear. Feels like 49°. High 74°, low 49°.

Pressure30.27 inHg
Wind4.6 mph E
Humidity87%
Visibility6.2 mi
Dew point46°
Sat, 2474° / 47°0Partly cloudy
74 °Partly cloudy

Vandalia, Saturday, 24 October

Partly cloudy. High 74°, low 47°.

Pressure30.36 inHg
Wind4.8 mph SE
Humidity51%
Visibility6.2 mi
Dew point49°
Sun, 2574° / 49°0Overcast
74 °Overcast

Vandalia, Sunday, 25 October

Overcast. High 74°, low 49°.

Pressure30.39 inHg
Wind3.6 mph S
Humidity48%
Visibility6.2 mi
Dew point50°
Mon, 2673° / 53°0Overcast
73 °Overcast

Vandalia, Monday, 26 October

Overcast. High 73°, low 53°.

Pressure30.33 inHg
Wind2.3 mph S
Humidity51%
Visibility6.2 mi
Dew point52°
Tue, 2772° / 51°0Overcast
72 °Overcast

Vandalia, Tuesday, 27 October

Overcast. High 72°, low 51°.

Pressure30.24 inHg
Wind5.5 mph S
Humidity44%
Visibility—
Dew point46°
Wed, 2874° / 55°0Clear
74 °Clear

Vandalia, Wednesday, 28 October

Clear. High 74°, low 55°.

Pressure30.06 inHg
Wind11.7 mph S
Humidity41%
Visibility—
Dew point46°
Thu, 2976° / 56°0Overcast
76 °Overcast

Vandalia, Thursday, 29 October

Overcast. High 76°, low 56°.

Pressure30.15 inHg
Wind15.1 mph S
Humidity28%
Visibility—
Dew point38°
Fri, 3066° / 60°0.08Light rain
66 °Light rain

Vandalia, Friday, 30 October

Light rain. High 66°, low 60°.

Pressure30.09 inHg
Wind12.9 mph S
Humidity46%
Visibility—
Dew point44°
Sat, 3162° / 61°0.91Rain
62 °Rain

Vandalia, Saturday, 31 October

Rain. High 62°, low 61°.

Pressure29.91 inHg
Wind10.4 mph S
Humidity98%
Visibility—
Dew point61°
Sun, 0158° / 49°0.02Light rain
58 °Light rain

Vandalia, Sunday, 1 November

Light rain. High 58°, low 49°.

Pressure30.06 inHg
Wind14.7 mph W
Humidity68%
Visibility—
Dew point46°
Mon, 0250° / 43°0Overcast
50 °Overcast

Vandalia, Monday, 2 November

Overcast. High 50°, low 43°.

Pressure30.21 inHg
Wind17 mph NW
Humidity55%
Visibility—
Dew point34°
Tue, 0356° / 37°0Clear
56 °Clear

Vandalia, Tuesday, 3 November

Clear. High 56°, low 37°.

Pressure30.30 inHg
Wind9 mph NW
Humidity36%
Visibility—
Dew point26°
Wed, 0460° / 39°0Clear
60 °Clear

Vandalia, Wednesday, 4 November

Clear. High 60°, low 39°.

Pressure30.27 inHg
Wind8.4 mph NW
Humidity36%
Visibility—
Dew point29°
Thu, 0562° / 42°0Clear
62 °Clear

Vandalia, Thursday, 5 November

Clear. High 62°, low 42°.

Pressure30.27 inHg
Wind6.6 mph SW
Humidity35%
Visibility—
Dew point30°
Fri, 0662° / 43°0Overcast
62 °Overcast

Vandalia, Friday, 6 November

Overcast. High 62°, low 43°.

Pressure30.15 inHg
Wind7 mph S
Humidity35%
Visibility—
Dew point31°
Sat, 0762° / 45°0Overcast
62 °Overcast

Vandalia, Saturday, 7 November

Overcast. High 62°, low 45°.

Pressure30.06 inHg
Wind5.4 mph N
Humidity38%
Visibility—
Dew point33°

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.