October weather forecast
Saint Marys, OH

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Weather in October

October, like September, in Saint Marys, Ohio, is another enjoyable autumn month, with an average temperature fluctuating between 45.9°F (7.7°C) and 61.7°F (16.5°C).

Temperature

Setting in of October comes with a decrease in the average high-temperature, moving from a moderately hot 73.8°F (23.2°C) in September to a comfortable 61.7°F (16.5°C). Saint Marys's nighttime temperature during October is consistently averaged at a chilly 45.9°F (7.7°C).

Humidity

With an average relative humidity of 75%, October is the least humid month.

Rainfall

In Saint Marys, during October, the rain falls for 13.5 days and regularly aggregates up to 2.01" (51mm) of precipitation. In Saint Marys, during the entire year, the rain falls for 161.4 days and collects up to 29.25" (743mm) of precipitation.

Snowfall

Months with snowfall in Saint Marys are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 0.5 snowfall days, it receives 0.16" (4mm) of snow. In Saint Marys, during the entire year, snow falls for 44.7 days and aggregates up to 12.32" (313mm) of snow.

Daylight

In Saint Marys, the average length of the day in October is 11h and 7min.
On the first day of the month, sunrise is at 7:34 am and sunset at 7:19 pm. On the last day of October, sunrise is at 8:07 am and sunset at 6:35 pm EDT.

Sunshine

In Saint Marys, Ohio, the average sunshine in October is 6h.

UV index

In Saint Marys, the average daily maximum UV index in October is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index, 2 in October, converts into the following recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Saint Marys in October?

The average high-temperature, in October, in Saint Marys, is 61.7°F (16.5°C), while the average low-temperature is 45.9°F (7.7°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in July is appraised at 86°F (30°C).

What is the least humid month in Saint Marys?

The least humid month is October, with an average relative humidity of 75%.

What is the average humidity in October in Saint Marys?

In Saint Marys, Ohio, the average relative humidity in October is 75%.

How much does it rain in Saint Marys in October?

In Saint Marys, during October, the rain falls for 13.5 days and regularly aggregates up to 2.01" (51mm) of precipitation.

When does it start snowing in Saint Marys?

October is the first month it typically snows in Saint Marys. Throughout October, in the average 0.5 snowfall days, it receives 0.16" (4mm) of snow.

How many hours of daylight does Saint Marys have in October?

The average day length in October in Saint Marys, Ohio, is 11h and 7min.

What time are sunrise and sunset in October in Saint Marys?

On the first day of October, sunrise is at 7:34 am and sunset at 7:19 pm. On the last day of the month, sunrise is at 8:07 am and sunset at 6:35 pm EDT.

How many hours of sunshine does Saint Marys have in October?

In October, the average sunshine duration in Saint Marys is 6h.

How high is the UV index in October in Saint Marys?

In Saint Marys, Ohio, the average daily maximum UV index in October is 2. A UV Index reading of 2, and below, represents a low health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Saint Marys, OH

Average temperature in October - Saint Marys, OH
  • Average high temperature in October: 61.7°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.6°F).

  • Average low temperature in October: 45.9°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure in October
Saint Marys, OH

Average pressure in October - Saint Marys, OH
  • Average pressure in October: 30.02"Hg

The months with the highest atmospheric pressure are January and November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in October
Saint Marys, OH

Average wind speed in October - Saint Marys, OH
  • Average wind speed in October: 8.7mph

The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).

Average humidity in October
Saint Marys, OH

Average humidity in October - Saint Marys, OH
  • Average humidity in October: 75%

The months with the highest relative humidity are January, February and December (83%).
The month with the lowest relative humidity is October (75%).

Average rainfall in October
Saint Marys, OH

Average rainfall in October - Saint Marys, OH
  • Average rainfall in October: 2.01"

The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is February (1.85").

Average rainfall days in October
Saint Marys, OH

Average rainfall days in October - Saint Marys, OH
  • Average rainfall days in October: 13.5 days

The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (7.4 days).

Average snowfall in October
Saint Marys, OH

Average snowfall in October - Saint Marys, OH
  • Average snowfall in October: 0.16"

The month with the highest snowfall is February (3.82").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in October
Saint Marys, OH

Average snowfall days in October - Saint Marys, OH
  • Average snowfall days in October: 0.5 days

The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in October /
Average sunshine in October
Saint Marys, OH

Average daylight in October / Average sunshine in October - Saint Marys, OH
  • Average daylight in October: 11h and 1min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in October: 6h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

Average sunshine days in October
Saint Marys, OH

Average sunshine days in October - Saint Marys, OH
  • Average sunshine days in October: 15.5 days

The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is June (9.4 days).

Average UV index in October
Saint Marys, OH

Average UV index in October - Saint Marys, OH
  • Average UV index in October: 2

The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in October
Saint Marys, OH

Average cloud cover in October - Saint Marys, OH
  • Average cloud cover in October: 41

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in October
Saint Marys, OH

Average visibility in October - Saint Marys, OH
  • Average visibility in October: 6mi

The months with the highest visibility are February, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are January, August and September (5mi).

Saint Marys, Ohio, USA

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