September weather forecastLake Grove, NY
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Lake Grove, New York, with an average temperature ranging between min 65.3°F (18.5°C) and max 72.1°F (22.3°C).Temperature
With the onset of September, Lake Grove's climate undergoes a slight change as the average high-temperature moves from a warm 78.1°F (25.6°C) in August to a pleasant 72.1°F (22.3°C). Lake Grove's temperature during September nights registers a minor decrease to an average low of 65.3°F (18.5°C).Humidity
In Lake Grove, the average relative humidity in September is 74%.Rainfall
In September, in Lake Grove, the rain falls for 12.8 days. Throughout September, 2.48" (63mm) of precipitation is accumulated. In Lake Grove, during the entire year, the rain falls for 155.3 days and collects up to 34.84" (885mm) of precipitation.Snowfall
In Lake Grove, snow does not fall in April, June through September and November.Daylight
In September, the average length of the day is 12h and 27min.On the first day of the month, sunrise is at 6:20 am and sunset at 7:24 pm. On the last day of September, sunrise is at 6:48 am and sunset at 6:35 pm EDT.
Sunshine
The average sunshine in September is 9.2h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the maximum UV index of 5 transforms into these recommendations:
Guard yourself - Avoiding sunburn is suggested. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lake Grove, NY
- Average high temperature in September: 72.1°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 September: 65.3°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 September
Lake Grove, NY
- Average pressure in September: 30.05"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 September
Lake Grove, NY
- Average wind speed in September: 10.4mph
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 September
Lake Grove, NY
- Average humidity in September: 74%
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 September
Lake Grove, NY
- Average rainfall in September: 2.48"
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 September
Lake Grove, NY
- Average rainfall days in September: 12.8 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 September
Lake Grove, NY
- Average snowfall in September: 0"
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 September
Lake Grove, NY
- Average snowfall days in September: 0 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 September /
Average sunshine in September
Lake Grove, NY
- Average daylight in September: 12h and 30min
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 September: 9h and 12min
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 September
Lake Grove, NY
- Average sunshine days in September: 15.1 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 September
Lake Grove, NY
- Average UV index in September: 5
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 September
Lake Grove, NY
- Average cloud cover in September: 31
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 September
Lake Grove, NY
- Average visibility in September: 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).
