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
The decrease of average high-temperatures is mild in October, with a decline from a moderately hot 73.8°F (23.2°C) in September to a refreshing 61.7°F (16.5°C). An average low-temperature of 46°F (7.8°C) is observed during the October nights.Humidity
The months with the highest humidity in Mount Gretna are February, May and October, with an average relative humidity of 81%.Rainfall
In Mount Gretna, during October, the rain falls for 11.4 days and regularly aggregates up to 1.42" (36mm) of precipitation. Throughout the year, in Mount Gretna, there are 137.4 rainfall days, and 16.26" (413mm) 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 0.1 snowfall days, it receives 0.16" (4mm) of snow. In Mount Gretna, during the entire year, snow falls for 19.5 days and aggregates up to 6.69" (170mm) of snow.Daylight
In Mount Gretna, the average length of the day in October is 11h and 7min.On the first day of the month, sunrise is at 7:02 am and sunset at 6:47 pm. On the last day of October, sunrise is at 7:35 am and sunset at 6:03 pm EDT.
Sunshine
In October, the average sunshine is 5.3h.UV index
The average daily maximum UV index in October in Mount Gretna is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: An average maximum UV index of 3 in October leads to these recommendations:
Take precautions - Protection against sunburn is recommended. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Frequently asked questions
What are the temperatures in Mount Gretna in October?
What is the most humid month in Mount Gretna?
What is the average humidity in October in Mount Gretna?
How much does it rain in Mount Gretna in October?
When does it start to snow in Mount Gretna?
How many hours of daylight does Mount Gretna have in October?
What time are sunrise and sunset in October in Mount Gretna?
How long on average sun shines in October in Mount Gretna?
What is the UV index reading in October in Mount Gretna?
Average temperature in October
Mount Gretna, PA
- Average high temperature in October: 61.7°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.8°F).
- Average low temperature in October: 46°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in October
Mount Gretna, 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
Mount Gretna, PA
- Average wind speed in October: 7mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in October
Mount Gretna, PA
- Average humidity in October: 81%
The months with the highest relative humidity are February, May and October (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall in October
Mount Gretna, PA
- Average rainfall in October: 1.42"
The wettest month (with the highest rainfall) is August (2.13").
The driest month (with the least rainfall) is February (0.94").
Average rainfall days in October
Mount Gretna, PA
- Average rainfall days in October: 11.4 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (6.7 days).
Average snowfall in October
Mount Gretna, PA
- Average snowfall in October: 0.16"
The month with the highest snowfall is January (1.97").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Mount Gretna, PA
- Average snowfall days in October: 0.1 days
The month with the highest number of snowfall days is January (5.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Mount Gretna, 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 24min).
- Average sunshine in October: 5h and 2min
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 30min).
Average sunshine days in October
Mount Gretna, PA
- Average sunshine days in October: 17.5 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is May (11.5 days).
Average UV index in October
Mount Gretna, PA
- Average UV index in October: 3
The months with the highest UV index are May, 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
Mount Gretna, PA
- Average cloud cover in October: 44
The months with the most cloud cover are February and December (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in October
Mount Gretna, PA
- Average visibility in October: 5mi
The months with the highest visibility are January, February, March, April, June, July, November and December (6mi).
The months with the lowest visibility are May, August, September and October (5mi).
Mount Gretna, Pennsylvania, USA
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