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As of 18:17 CDT

Weather in Vandalia, IL

70°Current weather

Vandalia, Monday, 26 October, 18:17

Overcast. Feels like 69°. High 75°, low 50°.

Pressure30.24 inHg
Wind1 mph E
Humidity44%
Visibility6.2 mi
Dew point48°
Tue, 2775° / 50°0Overcast
75 °Overcast

Vandalia, Tuesday, 27 October

Overcast. High 75°, low 50°.

Pressure30.27 inHg
Wind6.3 mph S
Humidity54%
Visibility6.2 mi
Dew point51°
Wed, 2874° / 52°0Clear
74 °Clear

Vandalia, Wednesday, 28 October

Clear. High 74°, low 52°.

Pressure30.21 inHg
Wind7.4 mph S
Humidity53%
Visibility6.2 mi
Dew point53°
Thu, 2978° / 56°0.01Light rain
78 °Light rain

Vandalia, Thursday, 29 October

Light rain. High 78°, low 56°.

Pressure30.15 inHg
Wind8.3 mph SW
Humidity55%
Visibility6.2 mi
Dew point56°
Fri, 3076° / 58°0Overcast
76 °Overcast

Vandalia, Friday, 30 October

Overcast. High 76°, low 58°.

Pressure30.21 inHg
Wind5.6 mph E
Humidity72%
Visibility6.2 mi
Dew point62°
Sat, 3169° / 60°0Overcast
69 °Overcast

Vandalia, Saturday, 31 October

Overcast. High 69°, low 60°.

Pressure30.15 inHg
Wind7.9 mph SE
Humidity69%
Visibility—
Dew point57°
Sun, 0170° / 59°0.41Rain
70 °Rain

Vandalia, Sunday, 1 November

Rain. High 70°, low 59°.

Pressure29.94 inHg
Wind9.9 mph SE
Humidity84%
Visibility—
Dew point58°
Mon, 0264° / 55°0.44Rain
64 °Rain

Vandalia, Monday, 2 November

Rain. High 64°, low 55°.

Pressure29.85 inHg
Wind15 mph E
Humidity66%
Visibility—
Dew point52°
Tue, 0362° / 49°0.96Rain
62 °Rain

Vandalia, Tuesday, 3 November

Rain. High 62°, low 49°.

Pressure29.56 inHg
Wind16.5 mph W
Humidity75%
Visibility—
Dew point46°
Wed, 0454° / 44°0.01Light rain
54 °Light rain

Vandalia, Wednesday, 4 November

Light rain. High 54°, low 44°.

Pressure29.83 inHg
Wind15.1 mph NW
Humidity71%
Visibility—
Dew point43°
Thu, 0549° / 46°0.02Light rain
49 °Light rain

Vandalia, Thursday, 5 November

Light rain. High 49°, low 46°.

Pressure30.00 inHg
Wind13.6 mph NW
Humidity75%
Visibility—
Dew point41°
Fri, 0657° / 39°0Clear
57 °Clear

Vandalia, Friday, 6 November

Clear. High 57°, low 39°.

Pressure30.18 inHg
Wind8.1 mph N
Humidity48%
Visibility—
Dew point33°
Sat, 0760° / 41°0Overcast
60 °Overcast

Vandalia, Saturday, 7 November

Overcast. High 60°, low 41°.

Pressure30.15 inHg
Wind12.8 mph S
Humidity45%
Visibility—
Dew point35°
Sun, 0865° / 51°0Overcast
65 °Overcast

Vandalia, Sunday, 8 November

Overcast. High 65°, low 51°.

Pressure29.94 inHg
Wind20 mph S
Humidity49%
Visibility—
Dew point42°
Mon, 0961° / 51°0.33Rain
61 °Rain

Vandalia, Monday, 9 November

Rain. High 61°, low 51°.

Pressure29.80 inHg
Wind12.3 mph SW
Humidity74%
Visibility—
Dew point52°
Tue, 1057° / 45°0.01Light rain
57 °Light rain

Vandalia, Tuesday, 10 November

Light rain. High 57°, low 45°.

Pressure29.80 inHg
Wind15.5 mph NW
Humidity69%
Visibility—
Dew point42°

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.