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 ushers in a slight temperature change, with average high-temperatures reducing from September's agreeable 73.2°F (22.9°C) to a refreshing 63°F (17.2°C). South Valley Stream registers an average low-temperature of 54.1°F (12.3°C) throughout October, a modest decrease from its daytime highs.Humidity
In October, the average relative humidity is 74%.Rainfall
In South Valley Stream, during October, the rain falls for 11.4 days and regularly aggregates up to 1.61" (41mm) of precipitation. Throughout the year, there are 135.3 rainfall days, and 18.62" (473mm) of precipitation is accumulated.Snowfall
January through March, 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 0.08" (2mm) of snow. In South Valley Stream, during the entire year, snow falls for 15.8 days and aggregates up to 2.95" (75mm) of snow.Daylight
In South Valley Stream, the average length of the day in October is 11h and 7min.On the first day of October, sunrise is at 6:52 am and sunset at 6:36 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:52 pm EDT.
Sunshine
The average sunshine in October is 5.9h.UV index
In October, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In October, a regular UV index of 4 translates into these guidelines:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are October temperatures?
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 South Valley Stream have in October?
What time are sunrise and sunset in October in South Valley Stream?
How many hours of sunshine does South Valley Stream have in October?
How high is the UV index in October?
Average temperature in October
South Valley Stream, NY
- Average high temperature in October: 63°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in October: 54.1°F
The month with the highest average low temperature is August (71.1°F).
The coldest month (with the lowest average low temperature) is January (28.2°F).
Average pressure in October
South Valley Stream, NY
- Average pressure in October: 30.02"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in October
South Valley Stream, NY
- Average wind speed in October: 11.1mph
The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in October
South Valley Stream, NY
- Average humidity in October: 74%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is November (72%).
Average rainfall in October
South Valley Stream, NY
- Average rainfall in October: 1.61"
The wettest months (with the highest rainfall) are July and August (2.32").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in October
South Valley Stream, NY
- Average rainfall days in October: 11.4 days
The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in October
South Valley Stream, NY
- Average snowfall in October: 0.08"
The month with the highest snowfall is March (1.02").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in October
South Valley Stream, NY
- Average snowfall days in October: 0.1 days
The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
South Valley Stream, NY
- 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 5min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in October
South Valley Stream, NY
- Average sunshine days in October: 17.4 days
The month with the most sunshine days is January (19.8 days).
The month with the least sunshine days is July (13.6 days).
Average UV index in October
South Valley Stream, NY
- Average UV index in October: 4
The months with the highest UV index are June, July and August (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
South Valley Stream, NY
- Average cloud cover in October: 39
The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in October
South Valley Stream, NY
- Average visibility in October: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
South Valley Stream, New York, USA
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