Saint Marys climate

Typical historical weather for Saint Marys, 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 Saint Marys.

Annual average

14.4°C

across all months

Warmest month

33°C

Jul average high

Coolest month

-4.6°C

Jan average low

Annual rainfall

843mm

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

41.7°C

19 August 2023

Coldest day

-26.7°C

16 February 2021

Wettest day

71.5mm

25 April 2024

Windiest day

11.6m/s

19 March 2025