Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
October is characterized by a reduction in the average high-temperature, from a pleasant 73.2°F (22.9°C) in September to a comfortable 61.3°F (16.3°C). In Williamstown, the average low-temperature during the month of October is a chilly 45.3°F (7.4°C).Humidity
In Williamstown, Pennsylvania, the average relative humidity in October is 81%.Rainfall
In Williamstown, during October, the rain falls for 12.4 days and regularly aggregates up to 2.17" (55mm) of precipitation. In Williamstown, Pennsylvania, during the entire year, the rain falls for 148.4 days and collects up to 25.55" (649mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.28" (7mm) of snow. In Williamstown, during the entire year, snow falls for 26.2 days and aggregates up to 12.32" (313mm) of snow.Daylight
The average length of the day in October is 11h and 7min.On the first day of the month, sunrise is at 7:03 am and sunset at 6:48 pm. On the last day of October, sunrise is at 7:36 am and sunset at 6:03 pm EDT.
Sunshine
In October, the average sunshine is 5.1h.UV index
In October, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In October, the maximum UV index of 3 suggests this advice:
Be vigilant - A duty to shield skin and eyes from injury exists. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Williamstown in October?
What is the average humidity in October?
How much does it rain in Williamstown in October?
When does it start snowing?
How many hours of daylight does Williamstown have in October?
When is the sunrise / sunset in October?
How many hours of sunshine does Williamstown have in October?
How high is the UV index in October?
Average temperature in October
Williamstown, PA
- Average high temperature in October: 61.3°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in October: 45.3°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in October
Williamstown, PA
- Average pressure in October: 30.04"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
Williamstown, PA
- Average wind speed in October: 6.6mph
The windiest months (with the highest average wind speed) are March and April (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in October
Williamstown, PA
- Average humidity in October: 81%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (76%).
Average rainfall in October
Williamstown, PA
- Average rainfall in October: 2.17"
The wettest month (with the highest rainfall) is May (2.95").
The driest month (with the least rainfall) is February (1.54").
Average rainfall days in October
Williamstown, PA
- Average rainfall days in October: 12.4 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (7.2 days).
Average snowfall in October
Williamstown, PA
- Average snowfall in October: 0.28"
The month with the highest snowfall is March (3.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Williamstown, PA
- Average snowfall days in October: 0.1 days
The month with the highest number of snowfall days is January (6.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Williamstown, PA
- 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: 5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in October
Williamstown, PA
- Average sunshine days in October: 16.7 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in October
Williamstown, PA
- Average UV index in October: 3
The months with the highest UV index are June and 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
Williamstown, PA
- Average cloud cover in October: 45
The months with the most cloud cover are February and December (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in October
Williamstown, PA
- Average visibility in October: 5mi
The months with the highest visibility are January, March, April, June, July, November and December (6mi).
The months with the lowest visibility are February, May, August, September and October (5mi).
Williamstown, Pennsylvania, USA
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