Climate and monthly weather forecastMiddlesex, NJ
Climate and monthly weather forecast
Weather in January
January, like December, in Middlesex, New Jersey, is another cold winter month, with an average temperature fluctuating between 23.2°F (-4.9°C) and 35.6°F (2°C). In Middlesex, the lowest temperatures are generally noted in January, averaging a high of 35.6°F (2°C) and a low of 23.2°F (-4.9°C). Weather in January »Weather in February
The last month of the winter, February, is another cold month in Middlesex, New Jersey, with an average temperature varying between 39°F (3.9°C) and 25.2°F (-3.8°C). February ushers in an average high-temperature of a still cold 39°F (3.9°C), aligning closely with the preceding month. Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Middlesex, New Jersey, with an average temperature ranging between min 32.5°F (0.3°C) and max 47.1°F (8.4°C). A gentle upsurge in temperatures occurs as February gives way to March, with average highs shifting from a cold 39°F (3.9°C) to a frosty 47.1°F (8.4°C). Weather in March »Weather in April
April is a refreshing spring month in Middlesex, New Jersey, with an average temperature varying between 59.5°F (15.3°C) and 42.8°F (6°C). With the onset of April, Middlesex sees a temperature rise, with the average high-temperature moving from March's chilly 47.1°F (8.4°C) to a mild 59.5°F (15.3°C). Weather in April »Weather in May
May, the last month of the spring in Middlesex, is an agreeable month, with temperature in the range of an average high of 70.2°F (21.2°C) and an average low of 52.5°F (11.4°C). With the onset of May, Middlesex's weather sees a temperature rise, transitioning from a refreshing 59.5°F (15.3°C) in April to a pleasant 70.2°F (21.2°C). Weather in May »Weather in June
June, the first month of the summer in Middlesex, is a moderately hot month, with an average temperature fluctuating between 60.4°F (15.8°C) and 78.1°F (25.6°C). June sees a marginal temperature increase, moving from a pleasant 70.2°F (21.2°C) in May to a warm 78.1°F (25.6°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Middlesex, New Jersey, with an average temperature varying between 84.4°F (29.1°C) and 66.6°F (19.2°C). Temperature records mark July as the warmest month, with highs averaging 84.4°F (29.1°C) and lows at 66.6°F (19.2°C). July's average heat index is computed to be a hot 93.2°F (34°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Middlesex, New Jersey, with an average temperature fluctuating between 65.3°F (18.5°C) and 82.6°F (28.1°C). With the arrival of August, Middlesex's average high-temperature registers at a still warm 82.6°F (28.1°C), indicating a subtle variation from the previous month. Weather in August »Weather in September
September, the first month of the autumn in Middlesex, is still a warm month, with temperature in the range of an average low of 58.5°F (14.7°C) and an average high of 75.4°F (24.1°C). September brings a slight decrease in temperature, down from 82.6°F (28.1°C) in August to a still moderately hot 75.4°F (24.1°C). Weather in September »Weather in October
October, like September, in Middlesex, New Jersey, is another enjoyable autumn month, with an average temperature fluctuating between 63°F (17.2°C) and 48.6°F (9.2°C). As Middlesex enters October, the average high-temperature decreases from the a warm 75.4°F (24.1°C) of September to a refreshing 63°F (17.2°C). Weather in October »Weather in November
November, the last month of the autumn in Middlesex, is another cool month, with an average temperature varying between 37.4°F (3°C) and 50.9°F (10.5°C). November suggests a modest reduction in the average high-temperature, shifting from an enjoyable 63°F (17.2°C) in October to a cool 50.9°F (10.5°C). Weather in November »Weather in December
December, the first month of the winter in Middlesex, is also an icy month, with an average temperature fluctuating between 30.7°F (-0.7°C) and 41.9°F (5.5°C). Start of December brings a shift in the average high-temperature, falling from November's cool 50.9°F (10.5°C) to a cold 41.9°F (5.5°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Middlesex, NJ
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (35.6°F).
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure
Middlesex, NJ
- Average pressure in January:
30.07"Hg - Average pressure in February:
30.04"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:
29.98"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.02"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
Middlesex, NJ
- Average wind speed in January:
8.4mph - Average wind speed in February:
8.4mph - Average wind speed in March:
8.6mph - Average wind speed in April:
8.3mph - Average wind speed in May:
6.8mph - Average wind speed in June:
6.3mph
- Average wind speed in July:
5.5mph - Average wind speed in August:
5.5mph - Average wind speed in September:
6mph - Average wind speed in October:
7mph - Average wind speed in November:
7.3mph - Average wind speed in December:
7.8mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity
Middlesex, NJ
The month with the highest relative humidity is February (79%).
The months with the lowest relative humidity are April and August (73%).
Average rainfall
Middlesex, NJ
- Average rainfall in January:
2.17" - Average rainfall in February:
2.17" - Average rainfall in March:
2.83" - Average rainfall in April:
2.72" - Average rainfall in May:
2.99" - Average rainfall in June:
2.52"
- Average rainfall in July:
3.03" - Average rainfall in August:
2.52" - Average rainfall in September:
1.57" - Average rainfall in October:
2.95" - Average rainfall in November:
2.4" - Average rainfall in December:
3.31"
The wettest month (with the highest rainfall) is December (3.31").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days
Middlesex, NJ
- Average rainfall days in January:
8.4 days - Average rainfall days in February:
10.1 days - Average rainfall days in March:
12 days - Average rainfall days in April:
15.9 days - Average rainfall days in May:
17.5 days - Average rainfall days in June:
15.7 days
- Average rainfall days in July:
16.4 days - Average rainfall days in August:
14.4 days - Average rainfall days in September:
12 days - Average rainfall days in October:
13 days - Average rainfall days in November:
9.5 days - Average rainfall days in December:
10.5 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (8.4 days).
Average snowfall
Middlesex, NJ
- Average snowfall in January:
2.48" - Average snowfall in February:
2.91" - Average snowfall in March:
4.06" - Average snowfall in April:
0.28" - Average snowfall in May:
0.24" - Average snowfall in June:
0"
The month with the highest snowfall is March (4.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Middlesex, NJ
- Average snowfall days in January:
7.8 days - Average snowfall days in February:
7 days - Average snowfall days in March:
5.6 days - Average snowfall days in April:
0.7 days - Average snowfall days in May:
0.1 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:
1.1 days - Average snowfall days in December:
4.3 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Middlesex, NJ
- 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 0min - Average sunshine in February:
4h and 36min - Average sunshine in March:
6h and 12min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 18min - Average sunshine in June:
9h and 30min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
9h and 54min - Average sunshine in September:
8h and 30min - Average sunshine in October:
5h and 36min - 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
Middlesex, NJ
- Average sunshine days in January:
17.8 days - Average sunshine days in February:
13.3 days - Average sunshine days in March:
14.1 days - Average sunshine days in April:
12.1 days - Average sunshine days in May:
11.6 days - Average sunshine days in June:
12.4 days
- Average sunshine days in July:
13.1 days - Average sunshine days in August:
14.1 days - Average sunshine days in September:
16.3 days - Average sunshine days in October:
16.3 days - Average sunshine days in November:
18.4 days - Average sunshine days in December:
16.8 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is May (11.6 days).
Average UV index
Middlesex, NJ
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
Middlesex, NJ
The months with the most cloud cover are February, March and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility
Middlesex, NJ
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).





