Local Forecast

Herculaneum, MO Weather Forecast & Alerts

Current conditions, 5-day forecast, active weather alerts for Herculaneum, MO

Active Alerts 1 active

Hour-by-Hour  Current Observation

Sunday 12:15 PM CDTSunday 12:15 PM

°F °C
Regional Observations →
87°F

Mostly Cloudy

  • 91° / 71° High / Low
  • 97° Feels Like
  • 0% Chance of Rain

Wind

6 mph

N

UV Index

8

Very High

Humidity

66%

Dew 75°F

Sun

5:52 AM · 8:22 PM

Rise · Set

Source: ST LOUIS/SPIRIT (KSUS). Slider scrubs the next 12 hours.

5-Day Outlook

Through Thursday

Local Radar →

This Afternoon

91° 71°

Chance of Thunderstorms

Overnight: Chance of Scattered Thunderstorms

Detailed forecast

This Afternoon

A chance of showers and thunderstorms. Partly sunny. High near 91, with temperatures falling to around 87 in the afternoon. Heat index values as high as 106. Northeast wind around 3 mph. Chance of precipitation is 50%.

Night

A chance of showers and thunderstorms before 10pm, then patchy fog. Partly cloudy, with a low around 71. Heat index values as high as 100. Northeast wind 0 to 3 mph. Chance of precipitation is 40%.

Monday

93° 75°

Partly Sunny

Overnight: Partly Cloudy

Detailed forecast

Monday

Patchy fog before 8am. Mostly sunny, with a high near 93. Heat index values as high as 106. Southeast wind around 1 mph.

Night

Mostly clear, with a low around 75. Heat index values as high as 106. Southwest wind around 3 mph.

Tuesday

98° 71°

Mostly Sunny

Overnight: Mostly Clear

Detailed forecast

Tuesday

Sunny, with a high near 97. West wind around 6 mph.

Night

Mostly clear, with a low around 70.

Wednesday

87° 64°

Partly Sunny

Overnight: Partly Cloudy

Detailed forecast

Wednesday

Sunny, with a high near 85.

Night

Partly cloudy, with a low around 62.

Thursday

84° 64°

Partly Sunny

Overnight: Partly Cloudy

Detailed forecast

Thursday

Mostly sunny, with a high near 83.

Night

A slight chance of rain showers after 1am. Partly cloudy, with a low around 63. Chance of precipitation is 20%.

Herculaneum, MO Weather Analysis Tools