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Herculaneum MO Weather - Clear - 74°F
Clear
74°F
Updated 8:59 am
Feels Like 80°F
Humidity 78%
Wind VRB 3 mph
Barometer  30.06 in
Dew Point 67°F
Herculaneum MO Weather - Clear - 23°C
Clear
23°C
Updated 8:59 am
Feels Like 27°C
Humidity 78%
Wind VRB 5 km/h
Barometer  101.8 kPa
Dew Point 19°C
Herculaneum, MO Weather and Current Conditionsherculaneum mo weather forecast

Herculaneum, MO Weather Forecast

Herculaneum Missouri WeatherHerculaneum, Missouri Weather Weather Forecast
14 day API forecast for Herculaneum, Missouri. Note. The 7-day weather forecast for Herculaneum, MO is the most reliable and accurate forecast. This model should only be used as a likely scenario. It is difficult to predict weather more than 7 days in advance.
Herculaneum, MO Weather Forecast Dated: 859 AM Tue Sep 15 2026
Expect a hot stretch with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.

Tuesday, September 15, 2026

Mid-Morning
Herculaneum Weather - 2026-09-15 - Morning - Sunny
81°F 27°C
Sunny
Mid-Afternoon
Herculaneum Weather - 2026-09-15 - Afternoon - Overcast
98°F 37°C
Overcast
Early-Evening
Herculaneum Weather - 2026-09-15 - Evening - Sunny
83°F 28°C
Sunny
Sizzling hot near 98°F 37°C with a heat index reaching 101°F 38°C, sunny in the morning, overcast in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds turning from the SSW to the NNW at 4 mph 6 km/h.

Wednesday, September 16, 2026

Mid-Morning
Herculaneum Weather - 2026-09-16 - Morning - Sunny
76°F 25°C
Sunny
Mid-Afternoon
Herculaneum Weather - 2026-09-16 - Afternoon - Sunny
98°F 37°C
Sunny
Early-Evening
Herculaneum Weather - 2026-09-16 - Evening - Partly Cloudy
87°F 31°C
Partly Cloudy
Hot and sweltering around 98°F 37°C (heat index 102°F 39°C), sunny through the afternoon, turning cloudy this evening, with lower humidity and steady pressure.

Thursday, September 17, 2026

Mid-Morning
Herculaneum Weather - 2026-09-17 - Morning - Sunny
81°F 27°C
Sunny
Mid-Afternoon
Herculaneum Weather - 2026-09-17 - Afternoon - Cloudy
98°F 37°C
Cloudy
Early-Evening
Herculaneum Weather - 2026-09-17 - Evening - Scattered Showers
83°F 28°C
Scattered Showers
Very hot with a high of 98°F 37°C, feeling closer to 101°F 39°C in the humidity, locally heavy downpours at times, with steady humidity and steady pressure. Winds switching from the WSW to the NNW at 9 mph 13 km/h.

Friday, September 18, 2026

Mid-Morning
Herculaneum Weather - 2026-09-18 - Morning - Sunny
79°F 26°C
Sunny
Mid-Afternoon
Herculaneum Weather - 2026-09-18 - Afternoon - Partly Cloudy
99°F 37°C
Partly Cloudy
Early-Evening
Herculaneum Weather - 2026-09-18 - Evening - Scattered Showers
84°F 29°C
Scattered Showers
Hot temperatures near 99°F 37°C, periods of heavy rain and gusty conditions, with lower humidity and barometric pressure falling.

Saturday, September 19, 2026

Mid-Morning
Herculaneum Weather - 2026-09-19 - Morning - Overcast
82°F 28°C
Overcast
Mid-Afternoon
Herculaneum Weather - 2026-09-19 - Afternoon - Overcast
99°F 37°C
Overcast
Early-Evening
Herculaneum Weather - 2026-09-19 - Evening - Overcast
87°F 31°C
Overcast
Very hot with a high of 99°F 37°C, overcast throughout the day, with lower humidity and barometric pressure falling.

Sunday, September 20, 2026

Mid-Morning
Herculaneum Weather - 2026-09-20 - Morning - Sunny
82°F 28°C
Sunny
Mid-Afternoon
Herculaneum Weather - 2026-09-20 - Afternoon - Overcast
95°F 35°C
Overcast
Early-Evening
Herculaneum Weather - 2026-09-20 - Evening - Overcast
87°F 31°C
Overcast
Very hot with temperatures reaching 95°F 35°C, cloudy in the morning, overcast in the afternoon, and cloudy this evening, with steady humidity and barometric pressure falling.

Monday, September 21, 2026

Mid-Morning
Herculaneum Weather - 2026-09-21 - Morning - Fog
74°F 24°C
Fog
Mid-Afternoon
Herculaneum Weather - 2026-09-21 - Afternoon - Overcast
82°F 28°C
Overcast
Early-Evening
Herculaneum Weather - 2026-09-21 - Evening - Partly Cloudy
75°F 24°C
Partly Cloudy
Balmy with temperatures reaching 82°F 28°C, overcast in the morning, cloudy in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure. Winds moving from the WNW to the NW at 7 mph 11 km/h.

Tuesday, September 22, 2026

Mid-Morning
Herculaneum Weather - 2026-09-22 - Morning - Light Fog
68°F 20°C
Light Fog
Mid-Afternoon
Herculaneum Weather - 2026-09-22 - Afternoon - Sunny
86°F 30°C
Sunny
Early-Evening
Herculaneum Weather - 2026-09-22 - Evening - Overcast
76°F 24°C
Overcast
Quite warm around 86°F 30°C, sunny in the morning, becoming cloudy through the afternoon and evening, with lower humidity and steady pressure.

Wednesday, September 23, 2026

Mid-Morning
Herculaneum Weather - 2026-09-23 - Morning - Sunny
73°F 23°C
Sunny
Mid-Afternoon
Herculaneum Weather - 2026-09-23 - Afternoon - Partly Cloudy
90°F 32°C
Partly Cloudy
Early-Evening
Herculaneum Weather - 2026-09-23 - Evening - Overcast
79°F 26°C
Overcast
Hot temperatures near 90°F 32°C, cloudy throughout the day, with steady humidity and barometric pressure falling.

Thursday, September 24, 2026

Mid-Morning
Herculaneum Weather - 2026-09-24 - Morning - Sunny
62°F 17°C
Sunny
Mid-Afternoon
Herculaneum Weather - 2026-09-24 - Afternoon - Sunny
77°F 25°C
Sunny
Early-Evening
Herculaneum Weather - 2026-09-24 - Evening - Sunny
66°F 19°C
Sunny
Mild with a high of 77°F 25°C, sunny throughout the day, with lower humidity and steady pressure. Winds swinging from the NW to the NNW at 6 mph 10 km/h.

Friday, September 25, 2026

Mid-Morning
Herculaneum Weather - 2026-09-25 - Morning - Sunny
60°F 16°C
Sunny
Mid-Afternoon
Herculaneum Weather - 2026-09-25 - Afternoon - Overcast
79°F 26°C
Overcast
Early-Evening
Herculaneum Weather - 2026-09-25 - Evening - Partly Cloudy
68°F 20°C
Partly Cloudy
Pleasant near 79°F 26°C, sunny in the morning, cloudy in the afternoon, and sunny this evening, with lower humidity and steady pressure.

Saturday, September 26, 2026

Mid-Morning
Herculaneum Weather - 2026-09-26 - Morning - Cloudy
67°F 19°C
Cloudy
Mid-Afternoon
Herculaneum Weather - 2026-09-26 - Afternoon - Overcast
85°F 29°C
Overcast
Early-Evening
Herculaneum Weather - 2026-09-26 - Evening - Cloudy
74°F 24°C
Cloudy
Balmy with temperatures reaching 85°F 29°C, partly cloudy in the morning, overcast in the afternoon, and sunny this evening, with steady humidity and steady pressure.

Sunday, September 27, 2026

Mid-Morning
Herculaneum Weather - 2026-09-27 - Morning - Sunny
71°F 22°C
Sunny
Mid-Afternoon
Herculaneum Weather - 2026-09-27 - Afternoon - Sunny
89°F 32°C
Sunny
Early-Evening
Herculaneum Weather - 2026-09-27 - Evening - Sunny
80°F 26°C
Sunny
Quite warm around 89°F 32°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and barometric pressure falling. Winds shifting from the S to the SSE at 6 mph 10 km/h.

Monday, September 28, 2026

Mid-Morning
Herculaneum Weather - 2026-09-28 - Morning - Sunny
77°F 25°C
Sunny
Mid-Afternoon
Herculaneum Weather - 2026-09-28 - Afternoon - Sunny
94°F 34°C
Sunny
Early-Evening
Herculaneum Weather - 2026-09-28 - Evening - Sunny
82°F 28°C
Sunny
Hot temperatures near 94°F 34°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds turning from the SSW to the ENE at 7 mph 11 km/h.

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Weather by the Numbers

Tue, 15th
Herculaneum MO Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 98°F 37°C
Lo: 72°F 22°C
Sunrise 06:43 AM
Sunset 07:10 PM
Wind SW 10 mph15 km/h
Dew Point 65°F19°C
uv Index 7
Barometric Pressure 30.06 in1018 mb
POP 1% *
Humidity 39%
Wed, 16th
Herculaneum MO Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 98°F 37°C
Lo: 73°F 23°C
Sunrise 06:44 AM
Sunset 07:08 PM
Wind WNW 4 mph6 km/h
Dew Point 68°F20°C
uv Index 7
Barometric Pressure 30.21 in1023 mb
POP 1% *
Humidity 46%
Thu, 17th
Herculaneum MO Weather - Thursday, Sep 17, 2026 - Sunny
Hi: 98°F 37°C
Lo: 75°F 24°C
Sunrise 06:45 AM
Sunset 07:06 PM
Wind WNW 5 mph8 km/h
Dew Point 64°F18°C
uv Index 9
Barometric Pressure 30.18 in1022 mb
POP 1% *
Humidity 36%
Fri, 18th
Herculaneum MO Weather - Friday, Sep 18, 2026 - Sunny
Hi: 99°F 37°C
Lo: 73°F 23°C
Sunrise 06:46 AM
Sunset 07:05 PM
Wind WNW 3 mph5 km/h
Dew Point 64°F18°C
uv Index 8
Barometric Pressure 30.09 in1019 mb
POP 1% *
Humidity 37%
Sat, 19th
Herculaneum MO Weather - Saturday, Sep 19, 2026 - Cloudy
Hi: 99°F 37°C
Lo: 76°F 24°C
Sunrise 06:47 AM
Sunset 07:03 PM
Wind W 9 mph15 km/h
Dew Point 58°F14°C
uv Index 7
Barometric Pressure 29.91 in1013 mb
POP 6% *
Humidity 29%
Sun, 20th
Herculaneum MO Weather - Sunday, Sep 20, 2026 - Overcast
Hi: 96°F 35°C
Lo: 74°F 24°C
Sunrise 06:48 AM
Sunset 07:02 PM
Wind W 6 mph10 km/h
Dew Point 56°F13°C
uv Index 7
Barometric Pressure 29.85 in1011 mb
POP 9% *
Humidity 31%
Mon, 21st
Herculaneum MO Weather - Monday, Sep 21, 2026 - Overcast
Hi: 82°F 28°C
Lo: 69°F 20°C
Sunrise 06:49 AM
Sunset 07:00 PM
Wind WNW 7 mph11 km/h
Dew Point 64°F18°C
uv Index 6
Barometric Pressure 29.88 in1012 mb
POP 13% *
Humidity 58%
Tue, 22nd
Herculaneum MO Weather - Tuesday, Sep 22, 2026 - Sunny
Hi: 87°F 30°C
Lo: 59°F 15°C
Sunrise 06:49 AM
Sunset 06:58 PM
Wind NE 4 mph6 km/h
Dew Point 53°F11°C
uv Index 7
Barometric Pressure 30.06 in1018 mb
POP 1% *
Humidity 40%
Wed, 23rd
Herculaneum MO Weather - Wednesday, Sep 23, 2026 - Overcast
Hi: 91°F 33°C
Lo: 64°F 18°C
Sunrise 06:50 AM
Sunset 06:57 PM
Wind S 5 mph8 km/h
Dew Point 49°F10°C
uv Index 6
Barometric Pressure 30.03 in1017 mb
POP 4% *
Humidity 30%
Thu, 24th
Herculaneum MO Weather - Thursday, Sep 24, 2026 - Sunny
Hi: 78°F 25°C
Lo: 54°F 12°C
Sunrise 06:51 AM
Sunset 06:55 PM
Wind NW 11 mph17 km/h
Dew Point 34°F1°C
uv Index 6
Barometric Pressure 30.09 in1019 mb
POP 0% *
Humidity 25%
Fri, 25th
Herculaneum MO Weather - Friday, Sep 25, 2026 - Sunny
Hi: 80°F 27°C
Lo: 51°F 10°C
Sunrise 06:52 AM
Sunset 06:54 PM
Wind NE 2 mph3 km/h
Dew Point 39°F4°C
uv Index 6
Barometric Pressure 30.15 in1021 mb
POP 5% *
Humidity 30%
Sat, 26th
Herculaneum MO Weather - Saturday, Sep 26, 2026 - Sunny
Hi: 86°F 30°C
Lo: 57°F 14°C
Sunrise 06:53 AM
Sunset 06:52 PM
Wind S 6 mph9 km/h
Dew Point 42°F6°C
uv Index 7
Barometric Pressure 30.12 in1020 mb
POP 6% *
Humidity 27%
Sun, 27th
Herculaneum MO Weather - Sunday, Sep 27, 2026 - Sunny
Hi: 90°F 32°C
Lo: 61°F 16°C
Sunrise 06:54 AM
Sunset 06:50 PM
Wind S 9 mph14 km/h
Dew Point 46°F8°C
uv Index 7
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 27%
Mon, 28th
Herculaneum MO Weather - Monday, Sep 28, 2026 - Partly Cloudy
Hi: 94°F 35°C
Lo: 68°F 20°C
Sunrise 06:55 AM
Sunset 06:49 PM
Wind SSW 8 mph12 km/h
Dew Point 51°F11°C
uv Index 8
Barometric Pressure 30 in1016 mb
POP 2% *
Humidity 29%
* POP = Probability of Precipitation. Data for 12:00 PM.