Hourly Weather Forecast - Herculaneum, MO

12 AM
49°F
10%
1mph
NNW
Partly Cloudy
Humidity
67%
Feels like
49°F
Dew Point
38°F
1 AM
48°F
10%
2mph
NNW
Mostly Clear
Humidity
68%
Feels like
48°F
Dew Point
38°F
2 AM
47°F
10%
3mph
N
Partly Cloudy
Humidity
71%
Feels like
47°F
Dew Point
38°F
3 AM
46°F
10%
3mph
NNE
Partly Cloudy
Humidity
72%
Feels like
46°F
Dew Point
38°F
4 AM
45°F
10%
3mph
NE
Mostly Cloudy
Humidity
74%
Feels like
45°F
Dew Point
37°F
5 AM
44°F
10%
3mph
NE
Mostly Cloudy
Humidity
78%
Feels like
44°F
Dew Point
37°F
6 AM
43°F
10%
3mph
NE
Mostly Cloudy
Humidity
78%
Feels like
43°F
Dew Point
37°F
6:57 AM
7 AM
44°F
10%
2mph
ENE
Mostly Cloudy
Humidity
77%
Feels like
44°F
Dew Point
37°F
8 AM
46°F
20%
3mph
E
Mostly Cloudy
Humidity
74%
Feels like
46°F
Dew Point
38°F
9 AM
50°F
20%
4mph
ESE
Mostly Cloudy
Humidity
68%
Feels like
49°F
Dew Point
40°F
10 AM
54°F
20%
4mph
ESE
Partly Cloudy
Humidity
63%
Feels like
54°F
Dew Point
41°F
11 AM
57°F
10%
5mph
ESE
Partly Cloudy
Humidity
55%
Feels like
57°F
Dew Point
41°F
12 PM
61°F
10%
5mph
SE
Partly Cloudy
Humidity
48%
Feels like
61°F
Dew Point
41°F
1 PM
64°F
0%
5mph
SE
Mostly Sunny
Humidity
43%
Feels like
64°F
Dew Point
41°F
2 PM
66°F
0%
6mph
SE
Mostly Sunny
Humidity
41%
Feels like
66°F
Dew Point
42°F
3 PM
68°F
0%
6mph
SE
Mostly Sunny
Humidity
40%
Feels like
68°F
Dew Point
42°F
4 PM
68°F
0%
6mph
SE
Sunny
Humidity
39%
Feels like
68°F
Dew Point
42°F
5 PM
68°F
0%
6mph
SE
Sunny
Humidity
40%
Feels like
68°F
Dew Point
43°F
6 PM
66°F
0%
5mph
SE
Sunny
Humidity
45%
Feels like
66°F
Dew Point
44°F
7 PM
65°F
0%
4mph
SE
Sunny
Humidity
49%
Feels like
65°F
Dew Point
45°F
7:18 PM
8 PM
63°F
0%
4mph
SSE
Clear
Humidity
58%
Feels like
63°F
Dew Point
48°F
9 PM
61°F
0%
4mph
SSE
Clear
Humidity
61%
Feels like
61°F
Dew Point
47°F
10 PM
59°F
0%
5mph
SSE
Clear
Humidity
66%
Feels like
59°F
Dew Point
47°F
11 PM
58°F
0%
5mph
SSE
Clear
Humidity
69%
Feels like
58°F
Dew Point
47°F

Today's High Temperature Outlook

Dangerous Heat Continues Across the Southwest

Dozens of record high temperatures will be challenged or shattered across the Southwest today.

Weekend Weather Outlook

Weekend Weather Outlook

Weekly Drought Map for March 19, 2026

Active Weather, Drought Improvements for Eastern Half; Drying Persists Elsewhere

(Image provided by Pixabay.com)

Lightning Safety

A tree knocked over after a storm produced high winds. (provided by PublicDomainPictures via Pixabay.com)

Strong Winds in the Springtime

Story image: WeatherBug user Pat S. captures a plant blooming in Columbia, Md., on February 24, 2017.

When Does Spring Begin?

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