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As of 20:19 CST

Weather in Vandalia, IL

56°Current weather

Vandalia, Wednesday, 4 November, 20:19

Partly cloudy. Feels like 55°. High 63°, low 55°.

Pressure29.83 inHg
Wind1 mph E
Humidity79%
Visibility6.2 mi
Dew point50°
Thu, 0565° / 48°0Clear
65 °Clear

Vandalia, Thursday, 5 November

Clear. High 65°, low 48°.

Pressure29.85 inHg
Wind11.6 mph W
Humidity54%
Visibility6.2 mi
Dew point45°
Fri, 0656° / 39°0Light rain
56 °Light rain

Vandalia, Friday, 6 November

Light rain. High 56°, low 39°.

Pressure30.15 inHg
Wind9.9 mph N
Humidity57%
Visibility6.2 mi
Dew point39°
Sat, 0752° / 35°0Overcast
52 °Overcast

Vandalia, Saturday, 7 November

Overcast. High 52°, low 35°.

Pressure30.27 inHg
Wind4.4 mph NW
Humidity48%
Visibility6.2 mi
Dew point32°
Sun, 0861° / 37°0Mostly clear
61 °Mostly clear

Vandalia, Sunday, 8 November

Mostly clear. High 61°, low 37°.

Pressure30.18 inHg
Wind7.8 mph SW
Humidity57%
Visibility6.2 mi
Dew point43°
Mon, 0964° / 41°0Clear
64 °Clear

Vandalia, Monday, 9 November

Clear. High 64°, low 41°.

Pressure30.21 inHg
Wind6.3 mph SW
Humidity64%
Visibility—
Dew point47°
Tue, 1063° / 44°0Clear
63 °Clear

Vandalia, Tuesday, 10 November

Clear. High 63°, low 44°.

Pressure30.09 inHg
Wind7.3 mph W
Humidity52%
Visibility—
Dew point42°
Wed, 1159° / 43°0Mostly clear
59 °Mostly clear

Vandalia, Wednesday, 11 November

Mostly clear. High 59°, low 43°.

Pressure30.15 inHg
Wind9.6 mph N
Humidity28%
Visibility—
Dew point24°
Thu, 1252° / 36°0Clear
52 °Clear

Vandalia, Thursday, 12 November

Clear. High 52°, low 36°.

Pressure30.18 inHg
Wind12.9 mph N
Humidity40%
Visibility—
Dew point26°
Fri, 1357° / 35°0Partly cloudy
57 °Partly cloudy

Vandalia, Friday, 13 November

Partly cloudy. High 57°, low 35°.

Pressure30.12 inHg
Wind8.3 mph W
Humidity38%
Visibility—
Dew point27°
Sat, 1466° / 40°0Clear
66 °Clear

Vandalia, Saturday, 14 November

Clear. High 66°, low 40°.

Pressure30.00 inHg
Wind11.1 mph SW
Humidity31%
Visibility—
Dew point29°
Sun, 1570° / 50°0Overcast
70 °Overcast

Vandalia, Sunday, 15 November

Overcast. High 70°, low 50°.

Pressure30.00 inHg
Wind11.7 mph SW
Humidity46%
Visibility—
Dew point42°
Mon, 1660° / 48°0Overcast
60 °Overcast

Vandalia, Monday, 16 November

Overcast. High 60°, low 48°.

Pressure29.94 inHg
Wind9.2 mph S
Humidity51%
Visibility—
Dew point40°
Tue, 1762° / 48°0Clear
62 °Clear

Vandalia, Tuesday, 17 November

Clear. High 62°, low 48°.

Pressure29.94 inHg
Wind17.6 mph W
Humidity42%
Visibility—
Dew point38°
Wed, 1862° / 43°0Clear
62 °Clear

Vandalia, Wednesday, 18 November

Clear. High 62°, low 43°.

Pressure30.12 inHg
Wind7 mph SE
Humidity55%
Visibility—
Dew point41°
Thu, 1971° / 48°0.09Light rain
71 °Light rain

Vandalia, Thursday, 19 November

Light rain. High 71°, low 48°.

Pressure29.88 inHg
Wind19.5 mph S
Humidity55%
Visibility—
Dew point51°

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.