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As of 06:09 CDT

Weather in Herculaneum, MO

54°Current weather

Herculaneum, Saturday, 24 October, 06:09

Overcast. Feels like 53°. High 76°, low 51°.

Pressure30.30 inHg
Wind1.8 mph SE
Humidity90%
Visibility6.2 mi
Dew point50°
Sun, 2579° / 47°0Overcast
79 °Overcast

Herculaneum, Sunday, 25 October

Overcast. High 79°, low 47°.

Pressure30.39 inHg
Wind1.4 mph S
Humidity48%
Visibility6.2 mi
Dew point51°
Mon, 2675° / 55°0Overcast
75 °Overcast

Herculaneum, Monday, 26 October

Overcast. High 75°, low 55°.

Pressure30.30 inHg
Wind3.2 mph SW
Humidity47%
Visibility6.2 mi
Dew point51°
Tue, 2772° / 53°0Overcast
72 °Overcast

Herculaneum, Tuesday, 27 October

Overcast. High 72°, low 53°.

Pressure30.24 inHg
Wind5.1 mph S
Humidity53%
Visibility6.2 mi
Dew point52°
Wed, 2876° / 53°0Clear
76 °Clear

Herculaneum, Wednesday, 28 October

Clear. High 76°, low 53°.

Pressure30.18 inHg
Wind6.8 mph S
Humidity41%
Visibility—
Dew point47°
Thu, 2978° / 56°0Overcast
78 °Overcast

Herculaneum, Thursday, 29 October

Overcast. High 78°, low 56°.

Pressure30.18 inHg
Wind6 mph S
Humidity42%
Visibility—
Dew point50°
Fri, 3080° / 60°0Overcast
80 °Overcast

Herculaneum, Friday, 30 October

Overcast. High 80°, low 60°.

Pressure30.18 inHg
Wind5.8 mph SW
Humidity28%
Visibility—
Dew point42°
Sat, 3171° / 61°0.22Rain
71 °Rain

Herculaneum, Saturday, 31 October

Rain. High 71°, low 61°.

Pressure30.09 inHg
Wind9.8 mph S
Humidity40%
Visibility—
Dew point44°
Sun, 0170° / 61°0.09Light rain
70 °Light rain

Herculaneum, Sunday, 1 November

Light rain. High 70°, low 61°.

Pressure30.06 inHg
Wind12.6 mph S
Humidity68%
Visibility—
Dew point58°
Mon, 0272° / 60°0Overcast
72 °Overcast

Herculaneum, Monday, 2 November

Overcast. High 72°, low 60°.

Pressure29.97 inHg
Wind8.6 mph SE
Humidity56%
Visibility—
Dew point54°
Tue, 0361° / 48°0.28Rain
61 °Rain

Herculaneum, Tuesday, 3 November

Rain. High 61°, low 48°.

Pressure29.88 inHg
Wind13 mph NW
Humidity49%
Visibility—
Dew point35°
Wed, 0453° / 44°0.12Light rain
53 °Light rain

Herculaneum, Wednesday, 4 November

Light rain. High 53°, low 44°.

Pressure29.85 inHg
Wind12.5 mph N
Humidity86%
Visibility—
Dew point46°
Thu, 0555° / 42°0Light rain
55 °Light rain

Herculaneum, Thursday, 5 November

Light rain. High 55°, low 42°.

Pressure30.03 inHg
Wind14.2 mph NW
Humidity39%
Visibility—
Dew point29°
Fri, 0642° / 32°0Partly cloudy
42 °Partly cloudy

Herculaneum, Friday, 6 November

Partly cloudy. High 42°, low 32°.

Pressure30.42 inHg
Wind12.6 mph NW
Humidity30%
Visibility—
Dew point12°
Sat, 0748° / 27°0Overcast
48 °Overcast

Herculaneum, Saturday, 7 November

Overcast. High 48°, low 27°.

Pressure30.50 inHg
Wind10.2 mph S
Humidity29%
Visibility—
Dew point13°
Sun, 0848° / 42°0.01Light rain
48 °Light rain

Herculaneum, Sunday, 8 November

Light rain. High 48°, low 42°.

Pressure30.15 inHg
Wind12.4 mph S
Humidity44%
Visibility—
Dew point27°

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 Herculaneum, MO 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 Herculaneum, MO 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.