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As of 13:46 CDT

Weather in Vandalia, IL

76°Current weather

Vandalia, Wednesday, 21 October, 13:46

Clear. Feels like 75°. High 76°, low 44°.

Pressure30.24 inHg
Wind0.7 mph NW
Humidity36%
Visibility6.2 mi
Dew point47°
Thu, 2275° / 49°0Clear
75 °Clear

Vandalia, Thursday, 22 October

Clear. High 75°, low 49°.

Pressure30.27 inHg
Wind2.6 mph NE
Humidity47%
Visibility6.2 mi
Dew point49°
Fri, 2371° / 50°0Clear
71 °Clear

Vandalia, Friday, 23 October

Clear. High 71°, low 50°.

Pressure30.33 inHg
Wind5 mph SE
Humidity49%
Visibility6.2 mi
Dew point49°
Sat, 2469° / 49°0Overcast
69 °Overcast

Vandalia, Saturday, 24 October

Overcast. High 69°, low 49°.

Pressure30.39 inHg
Wind4.5 mph SE
Humidity51%
Visibility6.2 mi
Dew point48°
Sun, 2573° / 49°0Overcast
73 °Overcast

Vandalia, Sunday, 25 October

Overcast. High 73°, low 49°.

Pressure30.39 inHg
Wind3.4 mph S
Humidity51%
Visibility6.2 mi
Dew point50°
Mon, 2671° / 51°0Overcast
71 °Overcast

Vandalia, Monday, 26 October

Overcast. High 71°, low 51°.

Pressure30.27 inHg
Wind6.9 mph S
Humidity47%
Visibility—
Dew point47°
Tue, 2772° / 54°0Overcast
72 °Overcast

Vandalia, Tuesday, 27 October

Overcast. High 72°, low 54°.

Pressure30.24 inHg
Wind7.8 mph SE
Humidity41%
Visibility—
Dew point43°
Wed, 2876° / 61°0Partly cloudy
76 °Partly cloudy

Vandalia, Wednesday, 28 October

Partly cloudy. High 76°, low 61°.

Pressure30.12 inHg
Wind12.8 mph SW
Humidity34%
Visibility—
Dew point43°
Thu, 2967° / 56°0.18Light rain
67 °Light rain

Vandalia, Thursday, 29 October

Light rain. High 67°, low 56°.

Pressure30.12 inHg
Wind12.1 mph NE
Humidity88%
Visibility—
Dew point59°
Fri, 3065° / 50°0.07Light rain
65 °Light rain

Vandalia, Friday, 30 October

Light rain. High 65°, low 50°.

Pressure30.18 inHg
Wind10.6 mph NE
Humidity59%
Visibility—
Dew point46°
Sat, 3176° / 55°0Overcast
76 °Overcast

Vandalia, Saturday, 31 October

Overcast. High 76°, low 55°.

Pressure29.94 inHg
Wind20.3 mph S
Humidity46%
Visibility—
Dew point50°
Sun, 0168° / 60°0.96Rain
68 °Rain

Vandalia, Sunday, 1 November

Rain. High 68°, low 60°.

Pressure29.91 inHg
Wind20.4 mph S
Humidity92%
Visibility—
Dew point57°
Mon, 0264° / 57°0.35Rain
64 °Rain

Vandalia, Monday, 2 November

Rain. High 64°, low 57°.

Pressure29.77 inHg
Wind12.7 mph NW
Humidity94%
Visibility—
Dew point58°
Tue, 0358° / 55°0.35Rain
58 °Rain

Vandalia, Tuesday, 3 November

Rain. High 58°, low 55°.

Pressure29.62 inHg
Wind15.5 mph NW
Humidity92%
Visibility—
Dew point55°
Wed, 0459° / 48°1.37Rain
59 °Rain

Vandalia, Wednesday, 4 November

Rain. High 59°, low 48°.

Pressure29.38 inHg
Wind14.9 mph SW
Humidity96%
Visibility—
Dew point52°
Thu, 0550° / 47°0.06Light rain
50 °Light rain

Vandalia, Thursday, 5 November

Light rain. High 50°, low 47°.

Pressure29.65 inHg
Wind13.8 mph SW
Humidity86%
Visibility—
Dew point45°

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.