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As of 03:27 CST

Weather in Herculaneum, MO

48°Current weather

Herculaneum, Thursday, 5 November, 03:27

Clear. Feels like 45°. High 65°, low 47°.

Pressure29.83 inHg
Wind6.2 mph W
Humidity91%
Visibility6.2 mi
Dew point45°
Fri, 0654° / 42°0Overcast
54 °Overcast

Herculaneum, Friday, 6 November

Overcast. High 54°, low 42°.

Pressure30.18 inHg
Wind8.1 mph N
Humidity61%
Visibility6.2 mi
Dew point41°
Sat, 0753° / 37°0Overcast
53 °Overcast

Herculaneum, Saturday, 7 November

Overcast. High 53°, low 37°.

Pressure30.27 inHg
Wind3.4 mph N
Humidity49%
Visibility6.2 mi
Dew point33°
Sun, 0862° / 37°0Clear
62 °Clear

Herculaneum, Sunday, 8 November

Clear. High 62°, low 37°.

Pressure30.21 inHg
Wind4.7 mph NW
Humidity49%
Visibility6.2 mi
Dew point41°
Mon, 0969° / 42°0Clear
69 °Clear

Herculaneum, Monday, 9 November

Clear. High 69°, low 42°.

Pressure30.18 inHg
Wind6.2 mph SW
Humidity48%
Visibility—
Dew point42°
Tue, 1068° / 46°0Clear
68 °Clear

Herculaneum, Tuesday, 10 November

Clear. High 68°, low 46°.

Pressure30.09 inHg
Wind6 mph W
Humidity57%
Visibility—
Dew point47°
Wed, 1163° / 49°0Clear
63 °Clear

Herculaneum, Wednesday, 11 November

Clear. High 63°, low 49°.

Pressure30.06 inHg
Wind10.9 mph N
Humidity32%
Visibility—
Dew point30°
Thu, 1253° / 38°0Clear
53 °Clear

Herculaneum, Thursday, 12 November

Clear. High 53°, low 38°.

Pressure30.18 inHg
Wind9.9 mph N
Humidity39%
Visibility—
Dew point26°
Fri, 1363° / 36°0Clear
63 °Clear

Herculaneum, Friday, 13 November

Clear. High 63°, low 36°.

Pressure29.94 inHg
Wind6 mph W
Humidity34%
Visibility—
Dew point28°
Sat, 1470° / 45°0Mostly clear
70 °Mostly clear

Herculaneum, Saturday, 14 November

Mostly clear. High 70°, low 45°.

Pressure29.94 inHg
Wind7.1 mph W
Humidity45%
Visibility—
Dew point42°
Sun, 1575° / 49°0Clear
75 °Clear

Herculaneum, Sunday, 15 November

Clear. High 75°, low 49°.

Pressure30.00 inHg
Wind8.9 mph S
Humidity49%
Visibility—
Dew point50°
Mon, 1678° / 62°0.05Light rain
78 °Light rain

Herculaneum, Monday, 16 November

Light rain. High 78°, low 62°.

Pressure29.91 inHg
Wind15.4 mph SW
Humidity51%
Visibility—
Dew point56°
Tue, 1778° / 66°0.06Light rain
78 °Light rain

Herculaneum, Tuesday, 17 November

Light rain. High 78°, low 66°.

Pressure29.94 inHg
Wind14.2 mph SW
Humidity50%
Visibility—
Dew point56°
Wed, 1866° / 61°1.34Heavy rain
66 °Heavy rain

Herculaneum, Wednesday, 18 November

Heavy rain. High 66°, low 61°.

Pressure30.03 inHg
Wind7.6 mph SW
Humidity95%
Visibility—
Dew point60°
Thu, 1955° / 48°0.81Rain
55 °Rain

Herculaneum, Thursday, 19 November

Rain. High 55°, low 48°.

Pressure30.12 inHg
Wind11.9 mph N
Humidity46%
Visibility—
Dew point34°
Fri, 2053° / 42°0Overcast
53 °Overcast

Herculaneum, Friday, 20 November

Overcast. High 53°, low 42°.

Pressure30.12 inHg
Wind11.8 mph NW
Humidity45%
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.