Herculaneum climate

Typical historical weather for Herculaneum, United States, averaged across 10 years of hourly climate data. Pick a date for a specific day.

Want today's actual conditions instead? See the current forecast for Herculaneum.

Annual average

14.3°C

across all months

Warmest month

31.1°C

Jul average high

Coolest month

-3.3°C

Jan average low

Annual rainfall

1153mm

total per year

Monthly averages

Average daily high/low temperature (band) and monthly rainfall (bars).

● Avg high● Avg low▮ Rainfall

Records on file

Hottest day

38.8°C

24 July 2022

Coldest day

-21.1°C

22 December 2022

Wettest day

127.6mm

8 September 2018

Windiest day

7.9m/s

5 March 2025