EN
English Español

As of 18:52 CDT

Weather in Herculaneum, MO

87°Current weather

Herculaneum, Saturday, 8 August, 18:52

Clear. Feels like 98°. High 90°, low 70°.

Pressure29.97 inHg
Wind7.4 mph E
Humidity71%
Visibility6.2 mi
Dew point76°
Sun, 0998° / 72°0Partly cloudy
98 °Partly cloudy

Herculaneum, Sunday, 9 August

Partly cloudy. High 98°, low 72°.

Pressure29.97 inHg
Wind10.2 mph S
Humidity45%
Visibility6.2 mi
Dew point69°
Mon, 10102° / 77°0Clear
102 °Clear

Herculaneum, Monday, 10 August

Clear. High 102°, low 77°.

Pressure29.94 inHg
Wind11.1 mph SW
Humidity37%
Visibility6.2 mi
Dew point67°
Tue, 11104° / 77°0.01Light rain
104 °Light rain

Herculaneum, Tuesday, 11 August

Light rain. High 104°, low 77°.

Pressure29.88 inHg
Wind10 mph SW
Humidity34%
Visibility6.2 mi
Dew point66°
Wed, 1292° / 72°0.05Light rain
92 °Light rain

Herculaneum, Wednesday, 12 August

Light rain. High 92°, low 72°.

Pressure29.85 inHg
Wind5.6 mph SW
Humidity63%
Visibility6.2 mi
Dew point68°
Thu, 1381° / 72°0.31Light rain
81 °Light rain

Herculaneum, Thursday, 13 August

Light rain. High 81°, low 72°.

Pressure29.85 inHg
Wind8.9 mph E
Humidity75%
Visibility—
Dew point71°
Fri, 1480° / 65°0.04Light rain
80 °Light rain

Herculaneum, Friday, 14 August

Light rain. High 80°, low 65°.

Pressure30.12 inHg
Wind10.1 mph NE
Humidity49%
Visibility—
Dew point58°
Sat, 1583° / 57°0Overcast
83 °Overcast

Herculaneum, Saturday, 15 August

Overcast. High 83°, low 57°.

Pressure30.24 inHg
Wind8.8 mph E
Humidity40%
Visibility—
Dew point51°
Sun, 1683° / 63°0.15Light rain
83 °Light rain

Herculaneum, Sunday, 16 August

Light rain. High 83°, low 63°.

Pressure30.18 inHg
Wind8.6 mph S
Humidity75%
Visibility—
Dew point65°
Mon, 17103° / 73°0.28Rain
103 °Rain

Herculaneum, Monday, 17 August

Rain. High 103°, low 73°.

Pressure29.91 inHg
Wind14 mph SW
Humidity40%
Visibility—
Dew point66°
Tue, 1893° / 75°0.01Light rain
93 °Light rain

Herculaneum, Tuesday, 18 August

Light rain. High 93°, low 75°.

Pressure29.97 inHg
Wind8.1 mph NE
Humidity51%
Visibility—
Dew point69°
Wed, 1995° / 73°0Mostly clear
95 °Mostly clear

Herculaneum, Wednesday, 19 August

Mostly clear. High 95°, low 73°.

Pressure29.88 inHg
Wind7.2 mph SE
Humidity48%
Visibility—
Dew point69°
Thu, 2091° / 74°0.07Light rain
91 °Light rain

Herculaneum, Thursday, 20 August

Light rain. High 91°, low 74°.

Pressure29.85 inHg
Wind8.9 mph NW
Humidity51%
Visibility—
Dew point68°
Fri, 2184° / 71°0.05Light rain
84 °Light rain

Herculaneum, Friday, 21 August

Light rain. High 84°, low 71°.

Pressure29.91 inHg
Wind9 mph NE
Humidity72%
Visibility—
Dew point69°
Sat, 2288° / 67°0Overcast
88 °Overcast

Herculaneum, Saturday, 22 August

Overcast. High 88°, low 67°.

Pressure29.91 inHg
Wind6.6 mph N
Humidity42%
Visibility—
Dew point58°
Sun, 2376° / 62°0Overcast
76 °Overcast

Herculaneum, Sunday, 23 August

Overcast. High 76°, low 62°.

Pressure30.12 inHg
Wind10.4 mph NE
Humidity59%
Visibility—
Dew point57°

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.