Climate and monthly weather forecastLong Valley, NJ
Climate and monthly weather forecast
Weather in January
January, the same as December, is an icy winter month in Long Valley, New Jersey, with an average temperature fluctuating between 21.6°F (-5.8°C) and 34°F (1.1°C). January, with average temperatures reaching a high of 34°F (1.1°C) and a low of 21.6°F (-5.8°C), is the coldest month. Weather in January »Weather in February
February, the last month of the winter in Long Valley, is another cold month, with an average temperature varying between 37.9°F (3.3°C) and 23.2°F (-4.9°C). The introduction of February notes a subtle temperature variation to a still icy 37.9°F (3.3°C) from January's 34°F (1.1°C). Weather in February »Weather in March
March, the first month of the spring in Long Valley, is a chilly month, with an average temperature ranging between min 30.4°F (-0.9°C) and max 45.5°F (7.5°C). The coming of March brings a minor shift in Long Valley's weather, with average high-temperatures adjusting from February's icy 37.9°F (3.3°C) to a frosty 45.5°F (7.5°C). Weather in March »Weather in April
April in Long Valley, New Jersey, is a moderate spring month, with temperature in the range of an average high of 57.9°F (14.4°C) and an average low of 40.1°F (4.5°C). The shift from March to April sees an increase in the average high-temperature, transitioning from a chilly 45.5°F (7.5°C) to a mild 57.9°F (14.4°C). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Long Valley, New Jersey, with temperature in the range of an average high of 69.3°F (20.7°C) and an average low of 50.2°F (10.1°C). As April gives way to May, the average high-temperature displays an increase, moving from a moderate 57.9°F (14.4°C) to a pleasant 69.3°F (20.7°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Long Valley, New Jersey, with an average temperature ranging between max 77.4°F (25.2°C) and min 57.6°F (14.2°C). The shift from May to June is marked by a slight increase in the average high-temperature, moving from an agreeable 69.3°F (20.7°C) to a warm 77.4°F (25.2°C). Weather in June »Weather in July
July, like June, in Long Valley, New Jersey, is a moderately hot summer month, with an average temperature varying between 83.1°F (28.4°C) and 63.3°F (17.4°C). July temperatures tend to peak at an average high of 83.1°F (28.4°C) and dip to a low of 63.3°F (17.4°C). The heat index for July is estimated at a hot 91.4°F (33°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Long Valley, New Jersey, with an average temperature fluctuating between 61.3°F (16.3°C) and 81.5°F (27.5°C). August's onset sees an average high-temperature of a still warm 81.5°F (27.5°C), exhibiting a slight fluctuation from the previous month. Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Long Valley, New Jersey, with an average temperature ranging between min 55.2°F (12.9°C) and max 74.3°F (23.5°C). Long Valley records a mild change in average high-temperature during September, easing from 81.5°F (27.5°C) in August to a still moderately hot 74.3°F (23.5°C). Weather in September »Weather in October
October, the same as September, is another enjoyable autumn month in Long Valley, New Jersey, with an average temperature fluctuating between 61.9°F (16.6°C) and 46°F (7.8°C). In October, the meteorological conditions alter, with the average high-temperature shifting from a moderately hot 74.3°F (23.5°C) in September to a refreshing 61.9°F (16.6°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Long Valley, New Jersey, with temperature in the range of an average high of 49.6°F (9.8°C) and an average low of 34.9°F (1.6°C). As November begins, there is a decrease in the average high-temperature, falling from an enjoyable 61.9°F (16.6°C) in October to a chilly 49.6°F (9.8°C). Weather in November »Weather in December
December, the first month of the winter in Long Valley, is still a cold month, with an average temperature ranging between max 40.1°F (4.5°C) and min 28.6°F (-1.9°C). December weather is marked by a drop in the average high-temperature, falling from a frosty 49.6°F (9.8°C) in November to a wintry 40.1°F (4.5°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Long Valley, NJ
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (34°F).
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure
Long Valley, NJ
- Average pressure in January:
30.07"Hg - Average pressure in February:
30.05"Hg - Average pressure in March:
30.06"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:
29.99"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.08"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Long Valley, NJ
- Average wind speed in January:
7.9mph - Average wind speed in February:
7.8mph - Average wind speed in March:
8.1mph - Average wind speed in April:
7.8mph - Average wind speed in May:
6.2mph - Average wind speed in June:
5.8mph
- Average wind speed in July:
5mph - Average wind speed in August:
4.8mph - Average wind speed in September:
5.5mph - Average wind speed in October:
6.5mph - Average wind speed in November:
6.8mph - Average wind speed in December:
7.3mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity
Long Valley, NJ
The months with the highest relative humidity are February and October (81%).
The month with the lowest relative humidity is April (75%).
Average rainfall
Long Valley, NJ
- Average rainfall in January:
1.89" - Average rainfall in February:
1.93" - Average rainfall in March:
2.44" - Average rainfall in April:
2.52" - Average rainfall in May:
2.83" - Average rainfall in June:
2.52"
- Average rainfall in July:
2.95" - Average rainfall in August:
2.44" - Average rainfall in September:
1.54" - Average rainfall in October:
2.76" - Average rainfall in November:
2.2" - Average rainfall in December:
2.76"
The wettest month (with the highest rainfall) is July (2.95").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days
Long Valley, NJ
- Average rainfall days in January:
8.3 days - Average rainfall days in February:
10.7 days - Average rainfall days in March:
13.3 days - Average rainfall days in April:
16.4 days - Average rainfall days in May:
16.9 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
16.6 days - Average rainfall days in August:
15.8 days - Average rainfall days in September:
12.2 days - Average rainfall days in October:
13.3 days - Average rainfall days in November:
10.6 days - Average rainfall days in December:
12 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (8.3 days).
Average snowfall
Long Valley, NJ
- Average snowfall in January:
2.99" - Average snowfall in February:
3.78" - Average snowfall in March:
3.62" - Average snowfall in April:
0.28" - Average snowfall in May:
0.51" - Average snowfall in June:
0"
The month with the highest snowfall is February (3.78").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Long Valley, NJ
- Average snowfall days in January:
8.8 days - Average snowfall days in February:
8.3 days - Average snowfall days in March:
6.3 days - Average snowfall days in April:
0.8 days - Average snowfall days in May:
0.2 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:
1.3 days - Average snowfall days in December:
5 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Long Valley, NJ
- 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 0min - Average sunshine in February:
4h and 36min - Average sunshine in March:
6h and 18min - Average sunshine in April:
8h and 6min - Average sunshine in May:
8h and 24min - Average sunshine in June:
9h and 36min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
10h and 0min - Average sunshine in September:
8h and 42min - Average sunshine in October:
5h and 30min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days
Long Valley, NJ
- Average sunshine days in January:
16.7 days - Average sunshine days in February:
12.8 days - Average sunshine days in March:
12.9 days - Average sunshine days in April:
11.7 days - Average sunshine days in May:
11.7 days - Average sunshine days in June:
11.5 days
- Average sunshine days in July:
12.3 days - Average sunshine days in August:
12.8 days - Average sunshine days in September:
15.3 days - Average sunshine days in October:
15.3 days - Average sunshine days in November:
17.5 days - Average sunshine days in December:
16 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (11.5 days).
Average UV index
Long Valley, NJ
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Long Valley, NJ
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility
Long Valley, NJ
The months with the highest visibility are April, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September and October (5mi).





