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
As September transitions to October, the average high-temperature falls from a moderately hot 74.7°F (23.7°C) to an enjoyable 62.8°F (17.1°C). In October, Grantham experiences an average nighttime temperature of 46.6°F (8.1°C).Humidity
In Grantham, the average relative humidity in October is 79%.Rainfall
In Grantham, in October, it is raining for 10.8 days, with typically 1.69" (43mm) of accumulated precipitation. In Grantham, Pennsylvania, during the entire year, the rain falls for 137.7 days and collects up to 18.43" (468mm) of precipitation.Snowfall
Months with snowfall are January through April, 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 Grantham, during the entire year, snow falls for 23.7 days and aggregates up to 8.62" (219mm) of snow.Daylight
In October, the average length of the day in Grantham is 11h and 8min.On the first day of the month, sunrise is at 7:05 am and sunset at 6:49 pm. On the last day of October, in Grantham, Pennsylvania, sunrise is at 7:36 am and sunset at 6:06 pm EDT.
Sunshine
In October, the average sunshine is 5.4h.UV index
In October, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 3 in October converts into the following recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in October?
What is the average humidity in October?
How much does it rain in October?
When does it start to snow?
How many hours of daylight does Grantham have in October?
What time are sunrise and sunset in October?
How long on average sun shines in October?
What is the UV index reading in October?
Average temperature in October
Grantham, PA
- Average high temperature in October: 62.8°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in October: 46.6°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in October
Grantham, PA
- Average pressure in October: 30.04"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
Grantham, PA
- Average wind speed in October: 6.8mph
The windiest months (with the highest average wind speed) are February, March and April (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in October
Grantham, PA
- Average humidity in October: 79%
The months with the highest relative humidity are February and May (80%).
The month with the lowest relative humidity is April (75%).
Average rainfall in October
Grantham, PA
- Average rainfall in October: 1.69"
The wettest months (with the highest rainfall) are May and July (2.05").
The driest month (with the least rainfall) is January (1.14").
Average rainfall days in October
Grantham, PA
- Average rainfall days in October: 10.8 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in October
Grantham, PA
- Average snowfall in October: 0.16"
The month with the highest snowfall is January (2.52").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in October
Grantham, PA
- Average snowfall days in October: 0.1 days
The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Grantham, 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 36min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in October
Grantham, PA
- Average sunshine days in October: 17.5 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (12.2 days).
Average UV index in October
Grantham, 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
Grantham, PA
- Average cloud cover in October: 41
The months with the most cloud cover are February and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in October
Grantham, PA
- Average visibility in October: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Grantham, Pennsylvania, USA
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