As of 00:32 CDT

Weather in Herculaneum, MO

60°

Herculaneum, Monday, 26 October, 00:32

Overcast. Feels like 59°. High 78°, low 54°.

Pressure30.33 inHg

Wind4 mph SW

Humidity70%

Visibility6.2 mi

Dew point50°

See detailed hourly forecast

Tue, 2776° / 51°

76 °

Herculaneum, Tuesday, 27 October

Overcast. High 76°, low 51°.

Pressure30.24 inHg

Wind4.5 mph S

Humidity53%

Visibility6.2 mi

Dew point51°

Wed, 2876° / 54°

76 °

Herculaneum, Wednesday, 28 October

Clear. High 76°, low 54°.

Pressure30.21 inHg

Wind5.4 mph S

Humidity48%

Visibility6.2 mi

Dew point52°

Thu, 2980° / 57°

80 °

Herculaneum, Thursday, 29 October

Clear. High 80°, low 57°.

Pressure30.15 inHg

Wind5.2 mph SW

Humidity49%

Visibility6.2 mi

Dew point55°

Fri, 3076° / 58°

76 °

Herculaneum, Friday, 30 October

Overcast. High 76°, low 58°.

Pressure30.12 inHg

Wind7.3 mph SE

Humidity47%

Visibility—

Dew point52°

Sat, 3169° / 61°

69 °

Herculaneum, Saturday, 31 October

Overcast. High 69°, low 61°.

Pressure30.15 inHg

Wind7.3 mph E

Humidity59%

Visibility—

Dew point52°

Sun, 0163° / 58°

0.42

63 °

Herculaneum, Sunday, 1 November

Rain. High 63°, low 58°.

Pressure29.97 inHg

Wind11.7 mph NE

Humidity87%

Visibility—

Dew point57°

Mon, 0265° / 56°

0.03

65 °

Herculaneum, Monday, 2 November

Light rain. High 65°, low 56°.

Pressure29.88 inHg

Wind10.6 mph N

Humidity71%

Visibility—

Dew point52°

Tue, 0368° / 53°

68 °

Herculaneum, Tuesday, 3 November

Mostly clear. High 68°, low 53°.

Pressure30.09 inHg

Wind7.5 mph NW

Humidity50%

Visibility—

Dew point46°

Wed, 0464° / 51°

64 °

Herculaneum, Wednesday, 4 November

Overcast. High 64°, low 51°.

Pressure30.24 inHg

Wind9.8 mph NE

Humidity32%

Visibility—

Dew point32°

Thu, 0555° / 41°

55 °

Herculaneum, Thursday, 5 November

Overcast. High 55°, low 41°.

Pressure30.45 inHg

Wind10.5 mph NE

Humidity43%

Visibility—

Dew point30°

Fri, 0660° / 38°

60 °

Herculaneum, Friday, 6 November

Partly cloudy. High 60°, low 38°.

Pressure30.21 inHg

Wind8.9 mph SE

Humidity27%

Visibility—

Dew point21°

Sat, 0766° / 46°

0.05

66 °

Herculaneum, Saturday, 7 November

Light rain. High 66°, low 46°.

Pressure29.94 inHg

Wind14.7 mph S

Humidity60%

Visibility—

Dew point45°

Sun, 0866° / 48°

66 °

Herculaneum, Sunday, 8 November

Partly cloudy. High 66°, low 48°.

Pressure30.18 inHg

Wind14.7 mph NW

Humidity39%

Visibility—

Dew point37°

Mon, 0960° / 39°

60 °

Herculaneum, Monday, 9 November

Clear. High 60°, low 39°.

Pressure30.33 inHg

Wind6.2 mph SE

Humidity37%

Visibility—

Dew point28°

Tue, 1074° / 46°

74 °

Herculaneum, Tuesday, 10 November

Mostly clear. High 74°, low 46°.

Pressure29.94 inHg

Wind11.7 mph SW

Humidity42%

Visibility—

Dew point46°

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.