Saint Marys Weather in December

December in Saint Marys brings pleasant temperatures, with daytime highs of 19°C (66°F) and nights around 11°C (52°F). Quite a bit of rainfall is expected, around 76 mm (3 in), so pack an umbrella.

Rainfall in Saint Marys in December

You can expect rain on around 13 days based on historical patterns, with 76 mm (3 in) average for the month. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.

Temperature in Saint Marys in December

December in Saint Marys sees highs of 19°C (66°F) and lows of 11°C (52°F) overnight. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. At 11°C (52°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. January and February typically offer the best weather for Saint Marys.