October weather forecastSaint Clair, PA
October
Weather in October
October, like September, in Saint Clair, Pennsylvania, is another refreshing autumn month, with an average temperature fluctuating between 60.8°F (16°C) and 44.6°F (7°C).Temperature
Saint Clair observes a minor decrease in the average high-temperature with the arrival of October, falling from September's pleasant 73°F (22.8°C) to a comfortable 60.8°F (16°C). Saint Clair, during the month of October, experiences an average low-temperature of 44.6°F (7°C).Humidity
In October, the average relative humidity is 81%.Rainfall
In Saint Clair, in October, it is raining for 13.9 days, with typically 2.95" (75mm) of accumulated precipitation. Throughout the year, there are 172.9 rainfall days, and 34.21" (869mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 0.2 snowfall days, it receives 0.43" (11mm) of snow. Throughout the year, in Saint Clair, there are 39.7 snowfall days, and 20.47" (520mm) of snow is accumulated.Daylight
The average length of the day in October is 11h and 7min.On the first day of October, sunrise is at 7:02 am and sunset at 6:46 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 6:01 pm EDT.
Sunshine
In Saint Clair, the average sunshine in October is 5.2h.UV index
In Saint Clair, the average daily maximum UV index in October is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: A daily high UV index of 3 in October leads to these guidelines:
Guard yourself - An obligation to protect skin and eyes from harm exists. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Saint Clair, PA
- Average high temperature in October: 60.8°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in October: 44.6°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in October
Saint Clair, PA
- Average pressure in October: 30.03"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in October
Saint Clair, PA
- Average wind speed in October: 6.7mph
The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in October
Saint Clair, PA
- Average humidity in October: 81%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (77%).
Average rainfall in October
Saint Clair, PA
- Average rainfall in October: 2.95"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is September (2.09").
Average rainfall days in October
Saint Clair, PA
- Average rainfall days in October: 13.9 days
The month with the highest number of rainy days is May (18.7 days).
The months with the least rainy days are January and November (10.8 days).
Average snowfall in October
Saint Clair, PA
- Average snowfall in October: 0.43"
The month with the highest snowfall is January (5.47").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Saint Clair, PA
- Average snowfall days in October: 0.2 days
The month with the highest number of snowfall days is January (11.8 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 Clair, PA
- Average daylight in October: 11h and 6min
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: 5h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are January, February and December (Average sunshine: 4h and 24min).
Average sunshine days in October
Saint Clair, PA
- Average sunshine days in October: 13.7 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is May (9.6 days).
Average UV index in October
Saint Clair, PA
- Average UV index in October: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in October
Saint Clair, PA
- Average cloud cover in October: 45
The months with the most cloud cover are February and December (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in October
Saint Clair, PA
- Average visibility in October: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
