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As of 01:47 CST

Weather in Herculaneum, MO

35°Current weather

Herculaneum, Sunday, 8 November, 01:47

Overcast. Feels like 31°. High 65°, low 37°.

Pressure30.21 inHg
Wind4.5 mph W
Humidity97%
Visibility3.8 mi
Dew point37°
Mon, 0968° / 42°0Clear
68 °Clear

Herculaneum, Monday, 9 November

Clear. High 68°, low 42°.

Pressure30.18 inHg
Wind2.3 mph SW
Humidity52%
Visibility6.2 mi
Dew point47°
Tue, 1069° / 46°0Clear
69 °Clear

Herculaneum, Tuesday, 10 November

Clear. High 69°, low 46°.

Pressure30.09 inHg
Wind4.9 mph W
Humidity56%
Visibility6.2 mi
Dew point50°
Wed, 1170° / 47°0.03Light rain
70 °Light rain

Herculaneum, Wednesday, 11 November

Light rain. High 70°, low 47°.

Pressure29.85 inHg
Wind10.2 mph W
Humidity63%
Visibility6.2 mi
Dew point57°
Thu, 1253° / 44°0Overcast
53 °Overcast

Herculaneum, Thursday, 12 November

Overcast. High 53°, low 44°.

Pressure29.94 inHg
Wind13.1 mph NW
Humidity54%
Visibility—
Dew point36°
Fri, 1346° / 35°0Overcast
46 °Overcast

Herculaneum, Friday, 13 November

Overcast. High 46°, low 35°.

Pressure30.12 inHg
Wind10.7 mph NW
Humidity54%
Visibility—
Dew point28°
Sat, 1448° / 29°0Clear
48 °Clear

Herculaneum, Saturday, 14 November

Clear. High 48°, low 29°.

Pressure30.15 inHg
Wind7.8 mph NW
Humidity38%
Visibility—
Dew point20°
Sun, 1563° / 34°0Clear
63 °Clear

Herculaneum, Sunday, 15 November

Clear. High 63°, low 34°.

Pressure30.12 inHg
Wind8.2 mph SW
Humidity37%
Visibility—
Dew point30°
Mon, 1669° / 46°0Overcast
69 °Overcast

Herculaneum, Monday, 16 November

Overcast. High 69°, low 46°.

Pressure30.09 inHg
Wind9.3 mph S
Humidity35%
Visibility—
Dew point37°
Tue, 1767° / 53°0.3Rain
67 °Rain

Herculaneum, Tuesday, 17 November

Rain. High 67°, low 53°.

Pressure30.03 inHg
Wind15.2 mph S
Humidity71%
Visibility—
Dew point54°
Wed, 1864° / 52°0.67Rain
64 °Rain

Herculaneum, Wednesday, 18 November

Rain. High 64°, low 52°.

Pressure29.97 inHg
Wind13.4 mph SW
Humidity45%
Visibility—
Dew point42°
Thu, 1963° / 50°0.13Light rain
63 °Light rain

Herculaneum, Thursday, 19 November

Light rain. High 63°, low 50°.

Pressure29.97 inHg
Wind11.8 mph S
Humidity96%
Visibility—
Dew point58°
Fri, 2069° / 58°0.01Light rain
69 °Light rain

Herculaneum, Friday, 20 November

Light rain. High 69°, low 58°.

Pressure29.85 inHg
Wind15.1 mph S
Humidity65%
Visibility—
Dew point56°
Sat, 2170° / 53°0Overcast
70 °Overcast

Herculaneum, Saturday, 21 November

Overcast. High 70°, low 53°.

Pressure29.85 inHg
Wind11.1 mph NW
Humidity42%
Visibility—
Dew point43°
Sun, 2254° / 43°0Clear
54 °Clear

Herculaneum, Sunday, 22 November

Clear. High 54°, low 43°.

Pressure29.94 inHg
Wind14.9 mph NW
Humidity37%
Visibility—
Dew point26°
Mon, 2351° / 38°0Clear
51 °Clear

Herculaneum, Monday, 23 November

Clear. High 51°, low 38°.

Pressure30.09 inHg
Wind11.5 mph NW
Humidity50%
Visibility—
Dew point31°

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.