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As of 16:11 CDT

Weather in Herculaneum, MO

76°Current weather

Herculaneum, Friday, 23 October, 16:11

Clear. Feels like 76°. High 76°, low 48°.

Pressure30.21 inHg
Wind5.7 mph SE
Humidity45%
Visibility6.2 mi
Dew point54°
Sat, 2475° / 48°0Overcast
75 °Overcast

Herculaneum, Saturday, 24 October

Overcast. High 75°, low 48°.

Pressure30.36 inHg
Wind3.8 mph SE
Humidity49%
Visibility6.2 mi
Dew point49°
Sun, 2575° / 48°0Overcast
75 °Overcast

Herculaneum, Sunday, 25 October

Overcast. High 75°, low 48°.

Pressure30.39 inHg
Wind1.6 mph S
Humidity52%
Visibility6.2 mi
Dew point53°
Mon, 2674° / 54°0Overcast
74 °Overcast

Herculaneum, Monday, 26 October

Overcast. High 74°, low 54°.

Pressure30.33 inHg
Wind1.8 mph SW
Humidity47%
Visibility6.2 mi
Dew point51°
Tue, 2771° / 53°0Overcast
71 °Overcast

Herculaneum, Tuesday, 27 October

Overcast. High 71°, low 53°.

Pressure30.24 inHg
Wind3.4 mph S
Humidity57%
Visibility6.2 mi
Dew point52°
Wed, 2876° / 53°0Overcast
76 °Overcast

Herculaneum, Wednesday, 28 October

Overcast. High 76°, low 53°.

Pressure30.15 inHg
Wind7.3 mph SW
Humidity42%
Visibility—
Dew point48°
Thu, 2980° / 55°0Overcast
80 °Overcast

Herculaneum, Thursday, 29 October

Overcast. High 80°, low 55°.

Pressure30.18 inHg
Wind7.9 mph SW
Humidity41%
Visibility—
Dew point51°
Fri, 3076° / 59°0Overcast
76 °Overcast

Herculaneum, Friday, 30 October

Overcast. High 76°, low 59°.

Pressure30.12 inHg
Wind6 mph S
Humidity29%
Visibility—
Dew point40°
Sat, 3161° / 59°0.17Light rain
61 °Light rain

Herculaneum, Saturday, 31 October

Light rain. High 61°, low 59°.

Pressure30.06 inHg
Wind13.5 mph S
Humidity82%
Visibility—
Dew point55°
Sun, 0166° / 60°0.12Light rain
66 °Light rain

Herculaneum, Sunday, 1 November

Light rain. High 66°, low 60°.

Pressure30.15 inHg
Wind8.6 mph SE
Humidity81%
Visibility—
Dew point59°
Mon, 0269° / 62°1.68Heavy rain
69 °Heavy rain

Herculaneum, Monday, 2 November

Heavy rain. High 69°, low 62°.

Pressure29.94 inHg
Wind14.1 mph S
Humidity91%
Visibility—
Dew point64°
Tue, 0371° / 54°0.76Rain
71 °Rain

Herculaneum, Tuesday, 3 November

Rain. High 71°, low 54°.

Pressure29.97 inHg
Wind14.7 mph NW
Humidity66%
Visibility—
Dew point58°
Wed, 0458° / 46°0Clear
58 °Clear

Herculaneum, Wednesday, 4 November

Clear. High 58°, low 46°.

Pressure30.45 inHg
Wind12.3 mph NW
Humidity35%
Visibility—
Dew point28°
Thu, 0566° / 42°0Mostly clear
66 °Mostly clear

Herculaneum, Thursday, 5 November

Mostly clear. High 66°, low 42°.

Pressure30.24 inHg
Wind10.6 mph W
Humidity32%
Visibility—
Dew point31°
Fri, 0670° / 44°0Partly cloudy
70 °Partly cloudy

Herculaneum, Friday, 6 November

Partly cloudy. High 70°, low 44°.

Pressure30.00 inHg
Wind7.3 mph SW
Humidity47%
Visibility—
Dew point45°
Sat, 0770° / 53°0.25Rain
70 °Rain

Herculaneum, Saturday, 7 November

Rain. High 70°, low 53°.

Pressure29.94 inHg
Wind8.9 mph S
Humidity70%
Visibility—
Dew point55°

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.