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 beginning of October marks a decrease in the average high-temperature, transitioning from an agreeable 72.1°F (22.3°C) in September to a refreshing 62.4°F (16.9°C). Holtsville maintains a minor drop in temperature during October nights, with averages of 55.8°F (13.2°C).Humidity
The average relative humidity in October in Holtsville is 73%.Rainfall
In Holtsville, in October, it is raining for 14 days, with typically 3.39" (86mm) of accumulated precipitation. Throughout the year, in Holtsville, New York, there are 155.3 rainfall days, and 34.84" (885mm) of precipitation is accumulated.Snowfall
Months with snowfall in Holtsville are January through March, May, October and December. October is the first month it typically snows in Holtsville. Throughout October, in the average 0.1 snowfall days, it receives 0.2" (5mm) of snow. Throughout the year, there are 14.7 snowfall days, and 6.14" (156mm) of snow is accumulated.Daylight
In Holtsville, the average length of the day in October is 11h and 6min.On the first day of the month, sunrise is at 6:49 am and sunset at 6:33 pm. On the last day of October, sunrise is at 7:22 am and sunset at 5:49 pm EDT.
Sunshine
The average sunshine in October is 6h.UV index
In Holtsville, the average daily maximum UV index in October is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 4 in October interprets into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Always opt for UVA and UVB-resistant sunglasses on radiant days. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Frequently asked questions
What are October temperatures in Holtsville?
What is the average humidity in October in Holtsville?
How much does it rain in Holtsville in October?
When does it start to snow in Holtsville?
How many hours of daylight does Holtsville have in October?
When is the sunrise / sunset in October in Holtsville?
How many hours of sunshine does Holtsville have in October?
How high is the UV index in October in Holtsville?
Average temperature in October
Holtsville, NY
- Average high temperature in October: 62.4°F
The warmest month (with the highest average high temperature) is August (78.1°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in October: 55.8°F
The month with the highest average low temperature is August (71.8°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).
Average pressure in October
Holtsville, NY
- Average pressure in October: 30.01"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in October
Holtsville, NY
- Average wind speed in October: 12.4mph
The windiest month (with the highest average wind speed) is January (13.8mph).
The calmest months (with the lowest average wind speed) are July and August (9mph).
Average humidity in October
Holtsville, NY
- Average humidity in October: 73%
The months with the highest relative humidity are May and June (78%).
The month with the lowest relative humidity is November (71%).
Average rainfall in October
Holtsville, NY
- Average rainfall in October: 3.39"
The wettest month (with the highest rainfall) is December (3.74").
The driest month (with the least rainfall) is January (2.17").
Average rainfall days in October
Holtsville, NY
- Average rainfall days in October: 14 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in October
Holtsville, NY
- Average snowfall in October: 0.2"
The month with the highest snowfall is March (2.13").
The months with the least snowfall are April, June, July, August, September and November (0").
Average snowfall days in October
Holtsville, NY
- Average snowfall days in October: 0.1 days
The month with the highest number of snowfall days is February (4.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Holtsville, NY
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in October: 6h and 0min
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
Holtsville, NY
- Average sunshine days in October: 15.8 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in October
Holtsville, 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 and December (UV index 2).
Average cloud cover in October
Holtsville, NY
- Average cloud cover in October: 40
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in October
Holtsville, 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).
Holtsville, New York, USA
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