October weather forecastDerry, PA
October
Weather in October
October, like September, is another refreshing autumn month in Derry, Pennsylvania, with an average temperature fluctuating between 60.6°F (15.9°C) and 43.7°F (6.5°C).Temperature
The arrival of October corresponds with a reduction in the average high-temperature, down from September's agreeable 72.9°F (22.7°C) to a refreshing 60.6°F (15.9°C). The temperature in Derry dips to an average of 43.7°F (6.5°C) during October nights.Humidity
The average relative humidity in October is 81%.Rainfall
In October, the rain falls for 13.5 days. Throughout October, 1.61" (41mm) of precipitation is accumulated. In Derry, during the entire year, the rain falls for 156.2 days and collects up to 19.45" (494mm) 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 0.6 snowfall days, it receives 0.47" (12mm) of snow. Throughout the year, there are 49.9 snowfall days, and 18.11" (460mm) of snow is accumulated.Daylight
In October, the average length of the day is 11h and 7min.On the first day of October, sunrise is at 7:14 am and sunset at 6:58 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 6:15 pm EDT.
Sunshine
In October, the average sunshine is 5.2h.UV index
In October, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 2 during October translates into these guidelines:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. 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
Average temperature in October
Derry, PA
- Average high temperature in October: 60.6°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (32.2°F).
- Average low temperature in October: 43.7°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in October
Derry, PA
- Average pressure in October: 30.03"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in October
Derry, PA
- Average wind speed in October: 7mph
The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in October
Derry, PA
- Average humidity in October: 81%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April, July and August (78%).
Average rainfall in October
Derry, PA
- Average rainfall in October: 1.61"
The wettest month (with the highest rainfall) is May (2.32").
The driest month (with the least rainfall) is November (1.02").
Average rainfall days in October
Derry, PA
- Average rainfall days in October: 13.5 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is January (7.6 days).
Average snowfall in October
Derry, PA
- Average snowfall in October: 0.47"
The month with the highest snowfall is January (3.94").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Derry, PA
- Average snowfall days in October: 0.6 days
The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Derry, 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 24min).
- Average sunshine in October: 5h and 12min
The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in October
Derry, PA
- Average sunshine days in October: 14.8 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is May (8.9 days).
Average UV index in October
Derry, PA
- Average UV index in October: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in October
Derry, PA
- Average cloud cover in October: 49
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in October
Derry, PA
- Average visibility in October: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
