Local Forecast

Herculaneum, MO Weather Forecast & Alerts

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

Active Alerts 2 active

Hour-by-Hour  Current Observation

Sunday 8:10 AM CDTSunday 8:10 AM

°F °C
Regional Observations →
82°F

Mostly Cloudy

  • 93° / 75° High / Low
  • 88° Feels Like
  • 0% Chance of Rain

Wind

5 mph

SSW

UV Index

4

Moderate

Humidity

74%

Dew 73°F

Sun

5:40 AM · 8:28 PM

Rise · Set

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

5-Day Outlook

Through Thursday

Local Radar →

Today

93° 75°

Partly Sunny

Overnight: Partly Cloudy

Detailed forecast

Today

Sunny, with a high near 93. Heat index values as high as 109. South wind 1 to 7 mph.

Night

Mostly clear, with a low around 74. Heat index values as high as 107. South wind 2 to 6 mph.

Monday

95° 75°

Mostly Sunny

Overnight: Clear

Detailed forecast

Monday

Sunny, with a high near 95. Heat index values as high as 107. South wind 2 to 7 mph.

Night

Clear, with a low around 75. Heat index values as high as 105. South wind 3 to 7 mph.

Tuesday

98° 75°

Sunny

Overnight: Clear

Detailed forecast

Tuesday

Sunny, with a high near 97. Southwest wind around 5 mph.

Night

Clear, with a low around 75.

Wednesday

95° 75°

Mostly Sunny

Overnight: Mostly Clear

Detailed forecast

Wednesday

Sunny, with a high near 96.

Night

Mostly clear, with a low around 76.

Thursday

95° 75°

Isolated T-storm

Overnight: Mostly Clear

Detailed forecast

Thursday

Sunny, with a high near 95.

Night

Mostly clear, with a low around 75.

Herculaneum, MO Weather Analysis Tools