Climate and monthly weather forecastSouth Valley Stream, NY
Climate and monthly weather forecast
Weather in January
January, the same as December, is an icy winter month in South Valley Stream, New York, with an average temperature ranging between max 37°F (2.8°C) and min 28.2°F (-2.1°C). January is South Valley Stream's coldest month, registering average high temperatures of 37°F (2.8°C) and lows of 28.2°F (-2.1°C). Weather in January »Weather in February
The last month of the winter, February, is also a wintry month in South Valley Stream, New York, with an average temperature varying between 29.8°F (-1.2°C) and 39.4°F (4.1°C). South Valley Stream marks the onset of February with an average high-temperature of a still wintry 39.4°F (4.1°C), subtly divergent from January's 37°F (2.8°C). Weather in February »Weather in March
March, the first month of the spring in South Valley Stream, is a chilly month, with an average temperature varying between 45.1°F (7.3°C) and 36°F (2.2°C). As South Valley Stream welcomes March, the average high-temperature sees a modest rise, transitioning from a wintry 39.4°F (4.1°C) in February to a chilly 45.1°F (7.3°C). Weather in March »Weather in April
April is a cool spring month in South Valley Stream, New York, with an average temperature fluctuating between 54.7°F (12.6°C) and 45.1°F (7.3°C). A shift in the average high-temperature is noticeable in April, changing from a frosty 45.1°F (7.3°C) in March to a cool 54.7°F (12.6°C). Weather in April »Weather in May
May, the last month of the spring in South Valley Stream, is a comfortable month, with an average temperature fluctuating between 64.6°F (18.1°C) and 54.1°F (12.3°C). An escalation in the average high-temperature is seen with the onset of May, moving from a fresh 54.7°F (12.6°C) in April to a refreshing 64.6°F (18.1°C). Weather in May »Weather in June
The first month of the summer, June, is a pleasant month in South Valley Stream, New York, with an average temperature varying between 73.2°F (22.9°C) and 63.9°F (17.7°C). A gentle upsurge in temperatures occurs as May gives way to June, with average highs shifting from a comfortable 64.6°F (18.1°C) to an agreeable 73.2°F (22.9°C). Weather in June »Weather in July
July is a warm summer month in South Valley Stream, New York, with an average temperature varying between 80.6°F (27°C) and 70.9°F (21.6°C). South Valley Stream's July weather, with an average high temperature of 80.6°F (27°C) and an average low temperature of 70.9°F (21.6°C), tends to be the warmest of the year. The average heat index in July is computed to be 84.2°F (29°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in South Valley Stream, New York, with temperature in the range of an average low of 71.1°F (21.7°C) and an average high of 79.9°F (26.6°C). South Valley Stream's August average high-temperature settles at a still moderately hot 79.9°F (26.6°C), showing a near match with the preceding month. Weather in August »Weather in September
The first month of the autumn, September, is also an agreeable month in South Valley Stream, New York, with an average temperature ranging between max 73.2°F (22.9°C) and min 64.2°F (17.9°C). A subtle shift in South Valley Stream's weather is observed as August turns into September, with the average high temperature reducing from a moderately hot 79.9°F (26.6°C) to a pleasant 73.2°F (22.9°C). Weather in September »Weather in October
October, like September, in South Valley Stream, New York, is another comfortable autumn month, with an average temperature fluctuating between 63°F (17.2°C) and 54.1°F (12.3°C). 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). Weather in October »Weather in November
November, the last month of the autumn in South Valley Stream, is also a fresh month, with an average temperature varying between 42.6°F (5.9°C) and 51.6°F (10.9°C). The arrival of November corresponds with a shift in temperature, down from a refreshing 63°F (17.2°C) in October to a fresh 51.6°F (10.9°C). Weather in November »Weather in December
The first month of the winter, December, is still a chilly month in South Valley Stream, New York, with an average temperature varying between 43.5°F (6.4°C) and 36°F (2.2°C). December's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a fresh 51.6°F (10.9°C) in November to a chilly 43.5°F (6.4°C). Weather in December »Updated: Jul 1, 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
South Valley Stream's January weather, marked by an average high temperature of 37°F (2.8°C) and an average low temperature of 28.2°F (-2.1°C), is the coldest in the year.
January is the month with the least rainfall. Rain falls for 7.3 days and accumulates 0.91" (23mm) of precipitation.
In South Valley Stream, during the entire year, the rain falls for 135.3 days and collects up to 18.62" (473mm) of precipitation.
Months with snowfall are January through March, October through December.
Throughout the year, there are 15.8 snowfall days, and 2.95" (75mm) of snow is accumulated.
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.
February has the least sunshine of the year, with an average of 4.8h of sunshine.
March is the month with the most snowfall. Snow falls for 3.3 days and accumulates 1.02" (26mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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.
In South Valley Stream, snow does not fall in April through September.
With an average relative humidity of 77%, May is the most humid month.
The month with the longest days is June, with an average of 15h and 0min of daylight.
June through August, with an average maximum UV index of 6, are months with the highest UV index in South Valley Stream.
South Valley Stream's warmest month, July, registers temperatures that range from a high of 80.6°F (27°C) to a low of 70.9°F (21.6°C).
The wettest months are July and August, with an average 2.32" (59mm) of rainfall.
The month with the most sunshine in South Valley Stream is July, with an average of 10.8h of sunshine.
The least humid month is November, with an average relative humidity of 72%.
With an average of 9h and 18min of daylight, December has the shortest days of the year.
Average temperature
South Valley Stream, NY
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).
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
South Valley Stream, NY
- Average pressure in January:
30.06"Hg - Average pressure in February:
30.03"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:
30.02"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.07"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
South Valley Stream, NY
- Average wind speed in January:
12.4mph - Average wind speed in February:
12mph - Average wind speed in March:
11.7mph - Average wind speed in April:
10.7mph - Average wind speed in May:
9.1mph - Average wind speed in June:
8.4mph
- Average wind speed in July:
8mph - Average wind speed in August:
8.2mph - Average wind speed in September:
9.1mph - Average wind speed in October:
11.1mph - Average wind speed in November:
11.6mph - Average wind speed in December:
11.9mph
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
South Valley Stream, NY
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is November (72%).
Average rainfall
South Valley Stream, NY
- Average rainfall in January:
0.91" - Average rainfall in February:
0.98" - Average rainfall in March:
1.3" - Average rainfall in April:
1.46" - Average rainfall in May:
1.65" - Average rainfall in June:
1.61"
- Average rainfall in July:
2.32" - Average rainfall in August:
2.32" - Average rainfall in September:
1.38" - Average rainfall in October:
1.61" - Average rainfall in November:
1.42" - Average rainfall in December:
1.65"
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
South Valley Stream, NY
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
7.8 days - Average rainfall days in March:
10.1 days - Average rainfall days in April:
12.8 days - Average rainfall days in May:
14.3 days - Average rainfall days in June:
12.4 days
- Average rainfall days in July:
15.1 days - Average rainfall days in August:
13.6 days - Average rainfall days in September:
12.4 days - Average rainfall days in October:
11.4 days - Average rainfall days in November:
7.4 days - Average rainfall days in December:
10.7 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
South Valley Stream, NY
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
South Valley Stream, NY
- Average snowfall days in January:
4.6 days - Average snowfall days in February:
4.3 days - Average snowfall days in March:
3.3 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:
0.6 days - Average snowfall days in December:
2.8 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 / Average sunshine
South Valley Stream, NY
- Average daylight in January:
9h and 42min - 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 0min
- Average daylight in July:
14h and 42min - 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 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
5h and 6min - 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:
8h and 54min - Average sunshine in June:
10h and 6min
- Average sunshine in July:
10h and 48min - Average sunshine in August:
10h and 36min - Average sunshine in September:
9h and 6min - Average sunshine in October:
5h and 54min - Average sunshine in November:
5h and 36min - Average sunshine in December:
5h 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
South Valley Stream, NY
- Average sunshine days in January:
19.8 days - Average sunshine days in February:
17 days - Average sunshine days in March:
17.6 days - Average sunshine days in April:
15.8 days - Average sunshine days in May:
14.5 days - Average sunshine days in June:
15.4 days
- Average sunshine days in July:
13.6 days - Average sunshine days in August:
15.4 days - Average sunshine days in September:
15.6 days - Average sunshine days in October:
17.4 days - Average sunshine days in November:
19.3 days - Average sunshine days in December:
16.9 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
South Valley Stream, 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, November and December (UV index 2).
Average cloud cover
South Valley Stream, NY
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
South Valley Stream, 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).
