October Weather in Saint Marys, United States

Last updated: June 24, 2025

In October, the average temperature in Saint Marys, United States is a comfortable 15°C (59°F). However, temperatures can vary significantly, with minimums dipping to 0°C (31°F) and maximums soaring to 35°C (95°F). Expect around 117 mm (4.6 in) of precipitation spread across 11 days, contributing to an average humidity of 81%. Embrace the mix of warmth and occasional rain in this charming locale!

October Temperature in Saint Marys

In October in Saint Marys, the average temperature is 15°C (59°F). Maximums can reach 35°C (95°F), and minimums can be as low as 0°C (31°F). This range makes it essential for travelers to pack accordingly, with layers for cooler evenings and lighter clothing for warmer daytime activities.

October Weather in Saint Marys: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Saint Marys, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Marys, October typically has an average temperature of 15°C (59°F), with highs reaching up to 35°C (95°F) and lows dropping to around 0°C (31°F).

Data source: Temperature data for Saint Marys generated using information from the Copernicus Climate Change Service.

October Precipitation in Saint Marys

In Saint Marys in October, the total precipitation amount reaches 117 mm (4.6 in) over the course of 11 days.

October Precipitation Trends in Saint Marys

The chart displays monthly precipitation patterns in Saint Marys, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Saint Marys, October typically receives around 117 mm (4.6 inches) of precipitation spread over approximately 11 days.

Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

October Humidity in Saint Marys

In Saint Marys in October humidity is 81%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket draped over you, making traveling quite uncomfortable as you constantly wipe away beads of sweat and feel the stickiness clinging to your clothes.

October Average Humidity in Saint Marys

This chart illustrates the average monthly humidity levels in Saint Marys, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Saint Marys is approximately 81%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Saint Marys

In Saint Marys in October, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Saint Marys, you can refer to this Hourly UV Index in Saint Marys.

Maximum UV Index Levels in Saint Marys for October

The chart shows the monthly maximum UV Index (UVI) for Saint Marys in October, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In October, the maximum UV index in Saint Marys typically reaches 6, which falls under the high exposure category.

Data source: Saint Marys October UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How October Weather in Saint Marys Compares to Other Months

Weather in Saint Marys varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Saint Marys, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Saint Marys, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (34°F)	95 mm (3.7 inches)	88%	moderate
February Weather	3°C (38°F)	127 mm (5.0 inches)	88%	moderate
March Weather	7°C (45°F)	117 mm (4.6 inches)	88%	high
April Weather	12°C (54°F)	151 mm (6.0 inches)	86%	very high
May Weather	18°C (65°F)	150 mm (5.9 inches)	82%	very high
June Weather	22°C (72°F)	180 mm (7.1 inches)	84%	very high
July Weather	24°C (76°F)	134 mm (5.3 inches)	82%	very high
August Weather	23°C (74°F)	110 mm (4.3 inches)	73%	very high
September Weather	21°C (70°F)	111 mm (4.4 inches)	73%	very high
October Weather	15°C (59°F)	117 mm (4.6 inches)	81%	high
November Weather	7°C (44°F)	88 mm (3.5 inches)	89%	moderate
December Weather	4°C (39°F)	119 mm (4.7 inches)	86%	moderate