Climate and monthly weather forecastCentral Islip, NY
Climate and monthly weather forecast
Weather in January
January, like December, in Central Islip, New York, is another cold winter month, with an average temperature fluctuating between 37.9°F (3.3°C) and 30°F (-1.1°C). Central Islip reaches its lowest average temperatures in January, measuring 37.9°F (3.3°C) at the peak and 30°F (-1.1°C) at the lowest. Weather in January »Weather in February
February, the last month of the winter in Central Islip, is also a wintry month, with temperature in the range of an average low of 31.1°F (-0.5°C) and an average high of 39.7°F (4.3°C). In February, Central Islip's weather conditions record an average high-temperature of a still wintry 39.7°F (4.3°C), demonstrating little divergence from the preceding month. Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Central Islip, New York, with an average temperature ranging between min 36.1°F (2.3°C) and max 44.2°F (6.8°C). The arrival of March is marked by an average high-temperature of a chilly 44.2°F (6.8°C), bearing a close resemblance to February. Weather in March »Weather in April
April in Central Islip, New York, is a cool spring month, with temperature in the range of an average high of 52.9°F (11.6°C) and an average low of 45.1°F (7.3°C). A slight uplift in the average high-temperature marks April, adjusting from March's chilly 44.2°F (6.8°C) to a cool 52.9°F (11.6°C). Weather in April »Weather in May
May, the last month of the spring in Central Islip, is an enjoyable month, with an average temperature fluctuating between 54.5°F (12.5°C) and 62.2°F (16.8°C). The shift into May is characterized by a rise in the average high-temperature, transitioning from April's cool 52.9°F (11.6°C) to a refreshing 62.2°F (16.8°C). Weather in May »Weather in June
The first month of the summer, June, is an agreeable month in Central Islip, New York, with an average temperature ranging between max 71.4°F (21.9°C) and min 63.9°F (17.7°C). An escalation in the average high-temperature is seen with the onset of June, moving from a refreshing 62.2°F (16.8°C) in May to a pleasant 71.4°F (21.9°C). Weather in June »Weather in July
July is a moderately hot summer month in Central Islip, New York, with temperature in the range of an average low of 71.8°F (22.1°C) and an average high of 79°F (26.1°C). In Central Islip, New York, temperatures reach their average annual highs in July, measuring 79°F (26.1°C) and a minimum average of 71.8°F (22.1°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Central Islip, New York, with temperature in the range of an average high of 78.4°F (25.8°C) and an average low of 72°F (22.2°C). Transitioning into August, Central Islip records an average high-temperature of a still warm 78.4°F (25.8°C), almost identical to July's 79°F (26.1°C). Weather in August »Weather in September
The first month of the autumn, September, is still a pleasant month in Central Islip, New York, with an average temperature varying between 72.1°F (22.3°C) and 65.3°F (18.5°C). With the arrival of September, Central Islip experiences a modest decline in average high-temperatures, transitioning from a warm 78.4°F (25.8°C) in August to a pleasant 72.1°F (22.3°C). Weather in September »Weather in October
October, the same as September, is another enjoyable autumn month in Central Islip, New York, with temperature in the range of an average low of 55.8°F (13.2°C) and an average high of 62.4°F (16.9°C). The transition into October involves a decrease in the average high-temperature, falling from an agreeable 72.1°F (22.3°C) in September to a refreshing 62.4°F (16.9°C). Weather in October »Weather in November
The last month of the autumn, November, is also a fresh month in Central Islip, New York, with temperature in the range of an average high of 52°F (11.1°C) and an average low of 44.2°F (6.8°C). Start of November brings a shift in the average high-temperature, falling from October's comfortable 62.4°F (16.9°C) to a fresh 52°F (11.1°C). Weather in November »Weather in December
December, the first month of the winter in Central Islip, is also a frosty month, with an average temperature varying between 43.9°F (6.6°C) and 36.9°F (2.7°C). December ushers in a minute temperature change, with average high-temperatures reducing from November's cool 52°F (11.1°C) to a frosty 43.9°F (6.6°C). Weather in December »Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Central Islip experiences its lowest temperatures in January, with an average peak of 37.9°F (3.3°C) and a low of 30°F (-1.1°C).
The month with the least rainfall is January, when the rain falls for 7.6 days and typically collects 2.05" (52mm) of precipitation.
In Central Islip, during the entire year, the rain falls for 153.2 days and collects up to 34.45" (875mm) of precipitation.
January through March, October through December are months with snowfall in Central Islip.
Throughout the year, in Central Islip, there are 13 snowfall days, and 5.87" (149mm) of snow is accumulated.
The months with the lowest UV index are January through March and December, with an average maximum UV index of 2.
With an average of 4.8h of sunshine, February has the least sunshine of the year in Central Islip, New York.
March is the month with the most snowfall. Snow falls for 2.6 days and accumulates 1.97" (50mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Central Islip, New York, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
April through September are months without snowfall in Central Islip.
The months with the highest humidity in Central Islip are May and June, with an average relative humidity of 77%.
The month with the longest days in Central Islip, New York, is June, with an average of 15h and 6min of daylight.
June through August, with an average maximum UV index of 6, are months with the highest UV index in Central Islip.
July is the warmest month in Central Islip, New York, with the temperature often reaching an average high of 79°F (26.1°C) and an average low of 71.8°F (22.1°C).
The month with the most rainfall in Central Islip is July, when the rain falls for 17.9 days and typically aggregates up to 3.86" (98mm) of precipitation.
July has the most sunshine of the year, with an average of 10.8h of sunshine.
November is the least humid month in Central Islip, New York, with an average relative humidity of 71%.
December has the shortest days of the year, with an average of 9h and 18min of daylight.
Average temperature
Central Islip, NY
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (37.9°F).
The month with the highest average low temperature is August (72°F).
The coldest month (with the lowest average low temperature) is January (30°F).
Average pressure
Central Islip, NY
- Average pressure in January:
30.05"Hg - Average pressure in February:
30.02"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.06"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
Central Islip, NY
- Average wind speed in January:
13.4mph - Average wind speed in February:
12.9mph - Average wind speed in March:
12.5mph - Average wind speed in April:
11.5mph - Average wind speed in May:
9.8mph - Average wind speed in June:
8.9mph
- Average wind speed in July:
8.6mph - Average wind speed in August:
8.8mph - Average wind speed in September:
10.1mph - Average wind speed in October:
11.9mph - Average wind speed in November:
12.6mph - Average wind speed in December:
12.9mph
The windiest month (with the highest average wind speed) is January (13.4mph).
The calmest month (with the lowest average wind speed) is July (8.6mph).
Average humidity
Central Islip, NY
The months with the highest relative humidity are May and June (77%).
The month with the lowest relative humidity is November (71%).
Average rainfall
Central Islip, NY
- Average rainfall in January:
2.05" - Average rainfall in February:
2.17" - Average rainfall in March:
2.56" - Average rainfall in April:
2.83" - Average rainfall in May:
2.95" - Average rainfall in June:
2.91"
- Average rainfall in July:
3.86" - Average rainfall in August:
3.35" - Average rainfall in September:
2.56" - Average rainfall in October:
3.23" - Average rainfall in November:
2.4" - Average rainfall in December:
3.58"
The wettest month (with the highest rainfall) is July (3.86").
The driest month (with the least rainfall) is January (2.05").
Average rainfall days
Central Islip, NY
- Average rainfall days in January:
7.6 days - Average rainfall days in February:
8.5 days - Average rainfall days in March:
10.8 days - Average rainfall days in April:
13.7 days - Average rainfall days in May:
15.8 days - Average rainfall days in June:
15.9 days
- Average rainfall days in July:
17.9 days - Average rainfall days in August:
16.3 days - Average rainfall days in September:
13.5 days - Average rainfall days in October:
13.1 days - Average rainfall days in November:
8.5 days - Average rainfall days in December:
11.6 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is January (7.6 days).
Average snowfall
Central Islip, NY
The month with the highest snowfall is March (1.97").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days
Central Islip, NY
- Average snowfall days in January:
3.8 days - Average snowfall days in February:
4.2 days - Average snowfall days in March:
2.6 days - Average snowfall days in April:
0.1 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.1 days - Average snowfall days in November:
0.5 days - Average snowfall days in December:
1.7 days
The month with the highest number of snowfall days is February (4.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Central Islip, NY
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 18min
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 January:
5h and 12min - Average sunshine in February:
4h and 48min - Average sunshine in March:
6h and 30min - Average sunshine in April:
8h and 36min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
10h and 48min - Average sunshine in August:
10h and 42min - Average sunshine in September:
9h and 6min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 54min
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
Central Islip, NY
- Average sunshine days in January:
19.4 days - Average sunshine days in February:
15.5 days - Average sunshine days in March:
17.3 days - Average sunshine days in April:
14.9 days - Average sunshine days in May:
13.9 days - Average sunshine days in June:
12.7 days
- Average sunshine days in July:
11.2 days - Average sunshine days in August:
12.5 days - Average sunshine days in September:
14.7 days - Average sunshine days in October:
16.8 days - Average sunshine days in November:
19.7 days - Average sunshine days in December:
17.4 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11.2 days).
Average UV index
Central Islip, NY
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
Central Islip, NY
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
Central Islip, NY
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).
