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

13.6°C

across all months

Warmest month

32°C

Jul average high

Coolest month

-5.8°C

Jan average low

Annual rainfall

962mm

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

40.5°C

19 August 2023

Coldest day

-28.6°C

21 January 2025

Wettest day

87.9mm

25 July 2025

Windiest day

10.2m/s

15 December 2021