Herculaneum, MO Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Herculaneum, MO in one place.
Sunny, with a high near 89. Southeast wind 0 to 5 mph.
Local Weather Overview
This forecast page for Herculaneum, MO is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Aug 27, 2026 9:12 PM CDT.
The active forecast window currently covers Aug 29 to Sep 3, 2026 for Herculaneum, MO.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 29 to Sep 3, 2026
- Latest sync
- Aug 27, 2026 9:12 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Herculaneum
Wednesday looks like the warmest upcoming period in Herculaneum at 98 degrees F.
Saturday Night is the coolest period ahead with temperatures near 66 degrees F.
The strongest winds are forecast for Sunday at about 3 to 7 mph S.
The forecast from Aug 29 through Sep 3 stays mostly dry.
Forecast Details
- Last updated
- Aug 27, 2026 9:12 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KLSX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 66. South wind around 3 mph.
Sunny, with a high near 95.
Mostly clear, with a low around 71.
Sunny, with a high near 97.
Mostly clear, with a low around 74.
Sunny, with a high near 97.
Mostly clear, with a low around 75.
Sunny, with a high near 98.
Mostly clear, with a low around 75.
Sunny, with a high near 97.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Aug 29
|
Sunny
|
89°F |
0 to 5 mph
SE
|
|
Saturday Night
Aug 29
|
Mostly Clear
|
66°F |
3 mph
S
|
|
Sunday
Aug 30
|
Sunny
|
95°F |
3 to 7 mph
S
|
|
Sunday Night
Aug 30
|
Mostly Clear
|
71°F |
6 mph
S
|
|
Monday
Aug 31
|
Sunny
|
97°F |
7 mph
S
|
|
Monday Night
Aug 31
|
Mostly Clear
|
74°F |
6 mph
S
|
|
Tuesday
Sep 1
|
Sunny
|
97°F |
5 mph
SW
|
|
Tuesday Night
Sep 1
|
Mostly Clear
|
75°F |
5 mph
S
|
|
Wednesday
Sep 2
|
Sunny
|
98°F |
5 mph
SW
|
|
Wednesday Night
Sep 2
|
Mostly Clear
|
75°F |
3 mph
S
|
|
Thursday
Sep 3
|
Sunny
|
97°F |
5 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Herculaneum.
