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Williamstown climate
Typical historical weather for Williamstown, 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 Williamstown.
Annual average
8.4°C
across all months
Warmest month
26.4°C
Jul average high
Coolest month
-9.1°C
Jan average low
Annual rainfall
1319mm
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
34.3°C
1 July 2018
Coldest day
-29.6°C
4 February 2023
Wettest day
66.2mm
17 October 2019
Windiest day
8.8m/s
25 February 2019
See the detail: Williamstown on 17 October 2019.