October weather forecastMertztown, PA
October
Weather in October
October, like September, in Mertztown, Pennsylvania, is another comfortable autumn month, with an average temperature ranging between max 62.1°F (16.7°C) and min 46°F (7.8°C).Temperature
October comes with a decrease in the average high-temperature, falling from a moderately hot 74.5°F (23.6°C) in September to an enjoyable 62.1°F (16.7°C). In Mertztown, an average nighttime temperature of 46°F (7.8°C) is expected during October.Humidity
In October, the average relative humidity is 80%.Rainfall
In Mertztown, in October, during 13.3 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. In Mertztown, Pennsylvania, during the entire year, the rain falls for 155.8 days and collects up to 30.75" (781mm) 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 0.39" (10mm) of snow. Throughout the year, there are 29.4 snowfall days, and 15.87" (403mm) of snow is accumulated.Daylight
The average length of the day in October is 11h and 7min.On the first day of the month, sunrise is at 6:59 am and sunset at 6:44 pm. On the last day of October, in Mertztown, sunrise is at 7:32 am and sunset at 6:00 pm EDT.
Sunshine
In Mertztown, the average sunshine in October is 5.3h.UV index
In Mertztown, the average daily maximum UV index in October is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 3 during October translates into the following directions:
Be vigilant - A duty to shield skin and eyes from injury exists. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Mertztown, PA
- Average high temperature in October: 62.1°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in October: 46°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in October
Mertztown, PA
- Average pressure in October: 30.03"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in October
Mertztown, PA
- Average wind speed in October: 6.6mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in October
Mertztown, PA
- Average humidity in October: 80%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April and July (76%).
Average rainfall in October
Mertztown, PA
- Average rainfall in October: 2.68"
The wettest month (with the highest rainfall) is April (2.99").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in October
Mertztown, PA
- Average rainfall days in October: 13.3 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (8.5 days).
Average snowfall in October
Mertztown, PA
- Average snowfall in October: 0.39"
The month with the highest snowfall is March (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Mertztown, PA
- Average snowfall days in October: 0.1 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Mertztown, 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 18min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in October
Mertztown, PA
- Average sunshine days in October: 15.8 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is April (11.2 days).
Average UV index in October
Mertztown, 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
Mertztown, PA
- Average cloud cover in October: 44
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in October
Mertztown, PA
- Average visibility in October: 5mi
The months with the highest visibility are April, June, July and November (6mi).
The months with the lowest visibility are January, February, March, May, August, September, October and December (5mi).
