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As of 00:53 CST

Weather in Vandalia, IL

30°Current weather

Vandalia, Sunday, 15 November, 00:53

Clear. Feels like 30°. High 51°, low 27°.

Pressure30.39 inHg
Wind2.5 mph NW
Humidity90%
Visibility6.2 mi
Dew point28°
Mon, 1654° / 31°0Clear
54 °Clear

Vandalia, Monday, 16 November

Clear. High 54°, low 31°.

Pressure30.53 inHg
Wind3 mph S
Humidity51%
Visibility6.2 mi
Dew point35°
Tue, 1756° / 33°0Clear
56 °Clear

Vandalia, Tuesday, 17 November

Clear. High 56°, low 33°.

Pressure30.53 inHg
Wind5.5 mph S
Humidity55%
Visibility6.2 mi
Dew point38°
Wed, 1858° / 39°0Overcast
58 °Overcast

Vandalia, Wednesday, 18 November

Overcast. High 58°, low 39°.

Pressure30.39 inHg
Wind10.3 mph S
Humidity51%
Visibility6.2 mi
Dew point39°
Thu, 1964° / 44°0Clear
64 °Clear

Vandalia, Thursday, 19 November

Clear. High 64°, low 44°.

Pressure30.30 inHg
Wind9.3 mph SW
Humidity51%
Visibility—
Dew point41°
Fri, 2068° / 52°0Overcast
68 °Overcast

Vandalia, Friday, 20 November

Overcast. High 68°, low 52°.

Pressure30.24 inHg
Wind7.9 mph S
Humidity61%
Visibility—
Dew point49°
Sat, 2167° / 49°0.02Light rain
67 °Light rain

Vandalia, Saturday, 21 November

Light rain. High 67°, low 49°.

Pressure30.03 inHg
Wind17.8 mph S
Humidity39%
Visibility—
Dew point38°
Sun, 2254° / 39°0.01Light rain
54 °Light rain

Vandalia, Sunday, 22 November

Light rain. High 54°, low 39°.

Pressure30.00 inHg
Wind21.7 mph NW
Humidity61%
Visibility—
Dew point33°
Mon, 2341° / 28°0Mostly clear
41 °Mostly clear

Vandalia, Monday, 23 November

Mostly clear. High 41°, low 28°.

Pressure30.39 inHg
Wind14.3 mph N
Humidity43%
Visibility—
Dew point18°
Tue, 2441° / 24°0Clear
41 °Clear

Vandalia, Tuesday, 24 November

Clear. High 41°, low 24°.

Pressure30.56 inHg
Wind8.2 mph NE
Humidity28%
Visibility—
Dew point7°
Wed, 2542° / 25°0Overcast
42 °Overcast

Vandalia, Wednesday, 25 November

Overcast. High 42°, low 25°.

Pressure30.45 inHg
Wind8.3 mph SE
Humidity36%
Visibility—
Dew point14°
Thu, 2652° / 32°0Overcast
52 °Overcast

Vandalia, Thursday, 26 November

Overcast. High 52°, low 32°.

Pressure30.15 inHg
Wind13.7 mph SE
Humidity31%
Visibility—
Dew point19°
Fri, 2759° / 46°0.88Rain
59 °Rain

Vandalia, Friday, 27 November

Rain. High 59°, low 46°.

Pressure29.35 inHg
Wind26.5 mph SE
Humidity94%
Visibility—
Dew point51°
Sat, 2840° / 37°0.24Light rain
40 °Light rain

Vandalia, Saturday, 28 November

Light rain. High 40°, low 37°.

Pressure29.59 inHg
Wind22 mph W
Humidity95%
Visibility—
Dew point35°
Sun, 2944° / 35°0Partly cloudy
44 °Partly cloudy

Vandalia, Sunday, 29 November

Partly cloudy. High 44°, low 35°.

Pressure30.09 inHg
Wind18.3 mph W
Humidity60%
Visibility—
Dew point29°
Mon, 3046° / 31°0Overcast
46 °Overcast

Vandalia, Monday, 30 November

Overcast. High 46°, low 31°.

Pressure30.30 inHg
Wind7.2 mph S
Humidity53%
Visibility—
Dew point28°

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.