What is today's weather forecast for Herculaneum, MO?

Today's forecast for Herculaneum shows a low of 50 degrees Fahrenheit. Rain, mainly before 3am.

What is the 7-day weather forecast for Herculaneum, MO?

The 7-day forecast for Herculaneum shows highs from 41 to 59 degrees and lows from 21 to 50 degrees Fahrenheit. Expect precipitation on 6 days with chances of 20% or higher.

Will it rain in Herculaneum, MO this week?

Yes, rain is possible in Herculaneum this week. Precipitation chances: Monday (100% chance), Tuesday (20% chance), Friday (60% chance), Saturday (70% chance), Sunday (50% chance), Monday (40% chance).

How accurate is the Herculaneum weather forecast?

WeatherForYou provides highly accurate Herculaneum forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Herculaneum, MO Weather Forecast and Current Conditions

Current Conditions From Nearby Station

Switch to Metric Units

56°F
Feels Like 56°F

Humidity N/A Dew Point N/A Wind WSW 10 MPH Gusts 15 Barometer N/A

Report from a MADIS/MESONET weather station 6.3 mi. ESE of central Herculaneum
at 7:37 PM Mon, Nov 24, 2025

Point Forecast at a Glance

MonNov 24

100%

TueNov 25

WedNov 26

ThuNov 27

FriNov 28

SatNov 29

70%

SunNov 30

50%

7-Day Temperature Trend

Week Ahead Summary

Variable high temperatures through the week, ranging from 41°F to 59°F. Unsettled weather expected with rain on most days, including one day with wintry mix.

Climate Context

This week's forecast shows temperatures running 4°F below the historical average for November-December. Normal highs for this period are around 50°F with lows around 32°F.

This Date in Weather History

1982 - Hurricane Iwa lashed the Hawaiian Islands of Niihau, Kauai, and Oahu with high winds and surf. Winds gusting to 120 mph caused extensive shoreline damage. Damage totalled 150 million dollars on Kauai, and fifty million dollars on Oahu. The peak storm surge on the south shore was six to eight feet. It marked the first time in 25 years that Hawaii had been affected by a hurricane.

Herculaneum, MO 7 Day Weather Forecast Details

Monday Nov 24

Night: Rain, mainly before 3am. Patchy fog after 9pm. Low around 50. Southeast wind around 5 mph becoming calm after midnight. Chance of precipitation is 100%.

Tuesday Nov 25

Day: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 59. Calm wind becoming west 5 to 8 mph in the morning.

Night: A slight chance of rain between 7pm and 8pm. Partly cloudy, with a low around 34. West wind 7 to 14 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.

Wednesday Nov 26

Day: Mostly sunny, with a high near 47. West wind 9 to 15 mph, with gusts as high as 26 mph.

Night: Partly cloudy, with a low around 27. West wind 3 to 6 mph.

Thursday Nov 27

Day: Sunny, with a high near 43.

Night: Mostly clear, with a low around 21.

Friday Nov 28

Day: Partly sunny, with a high near 42.

Night: Rain and snow likely, mainly after midnight. Cloudy, with a low around 31. Chance of precipitation is 60%.

Saturday Nov 29

Day: Rain likely, possibly mixed with snow, becoming all rain after noon. Cloudy, with a high near 41. Chance of precipitation is 70%.

Night: Rain likely. Cloudy, with a low around 31. Chance of precipitation is 60%.

Sunday Nov 30

Day: A 50 percent chance of rain. Mostly cloudy, with a high near 45.

Night: A 50 percent chance of rain. Cloudy, with a low around 32.

Monday Dec 1

Day: A 40 percent chance of rain. Mostly cloudy, with a high near 47.

About Herculaneum, MO

Herculaneum is a city in Jefferson County, Missouri, and is a suburb of St. Louis. The population was 4,273 at the 2020 United States census. The City of Herculaneum was the first county seat of Jefferson County from January 1, 1819, to 1839. The city celebrated its bicentennial throughout 2008. The city received the "Tree City USA" designation by the Arbor Day Foundation for 11 consecutive years, 2007 through 2017. The city is the honorary hometown of the 40th Airlift Squadron, "The Screaming Eagles," from Dyess Air Force Base in Texas.

Content from Wikipedia, licensed under CC BY-SA 3.0.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.

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