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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, is an icy winter month in Washington, New Jersey, with an average temperature ranging between max 34°F (1.1°C) and min 21.6°F (-5.8°C). The month of January sees the lowest average temperatures, reaching 34°F (1.1°C) at the peak and 21.6°F (-5.8°C) at the low. Weather in January »
Weather in February
The last month of the winter, February, is also a wintry month in Washington, New Jersey, with an average temperature fluctuating between 37.9°F (3.3°C) and 23.4°F (-4.8°C). Washington marks the start of February with an average high-temperature of a still icy 37.9°F (3.3°C), hinting at a slight fluctuation from January's 34°F (1.1°C). Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Washington, New Jersey, with an average temperature varying between 30.2°F (-1°C) and 45.9°F (7.7°C). The beginning of March marks a minor shift in the average high-temperature, moving from February's cold 37.9°F (3.3°C) to a chilly 45.9°F (7.7°C). Weather in March »
Weather in April
April is a mild spring month in Washington, New Jersey, with an average temperature fluctuating between 40.1°F (4.5°C) and 58.1°F (14.5°C). Washington in April experiences an increase in the average high-temperature, moving from March's chilly 45.9°F (7.7°C) to a refreshing 58.1°F (14.5°C). Weather in April »
Weather in May
May, the last month of the spring in Washington, is a pleasant month, with an average temperature ranging between max 69.4°F (20.8°C) and min 50.4°F (10.2°C). As Washington enters May, the average high-temperature increases from the a mild 58.1°F (14.5°C) of April to a pleasant 69.4°F (20.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Washington, New Jersey, with an average temperature ranging between max 77.5°F (25.3°C) and min 57°F (13.9°C). With the onset of June, Washington's average high-temperature experiences a slight rise, moving from May's pleasant 69.4°F (20.8°C) to a warm 77.5°F (25.3°C). Weather in June »
Weather in July
July, like June, in Washington, New Jersey, is a moderately hot summer month, with an average temperature fluctuating between 83.7°F (28.7°C) and 63°F (17.2°C). The warmest period tends to be July, when average temperatures fluctuate between a high of 83.7°F (28.7°C) and a low of 63°F (17.2°C). During July, the heat index is appraised at a tropical 91.4°F (33°C). Weather in July »
Weather in August
August, the last month of the summer in Washington, is also a moderately hot month, with an average temperature ranging between max 81.1°F (27.3°C) and min 61.3°F (16.3°C). The start of August sees the average high-temperature at a still moderately hot 81.1°F (27.3°C), showing little difference from July's 83.7°F (28.7°C). Weather in August »
Weather in September
September, the first month of the autumn in Washington, is still a warm month, with temperature in the range of an average low of 55°F (12.8°C) and an average high of 74.3°F (23.5°C). September's arrival aligns with a minor decrease in average high-temperatures, from August's warm 81.1°F (27.3°C) to a still moderately hot 74.3°F (23.5°C). Weather in September »
Weather in October
October, like September, in Washington, New Jersey, is another comfortable autumn month, with an average temperature varying between 45.7°F (7.6°C) and 62.1°F (16.7°C). Washington's progression into October includes a drop in the average high-temperature, from a moderately hot 74.3°F (23.5°C) in September to an enjoyable 62.1°F (16.7°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Washington, New Jersey, with an average temperature ranging between min 34.9°F (1.6°C) and max 49.8°F (9.9°C). The start of November involves a temperature drop, moving from a comfortable 62.1°F (16.7°C) in October to a frosty 49.8°F (9.9°C). Weather in November »
Weather in December
December, the first month of the winter in Washington, is also a wintry month, with an average temperature fluctuating between 40.1°F (4.5°C) and 28.4°F (-2°C). The arrival of December signals a shift in temperature, down from a chilly 49.8°F (9.9°C) in November to a cold 40.1°F (4.5°C). Weather in December »
Updated: Jun 23, 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
What part of the year is the coldest?
The month of January sees the average lowest temperatures, reaching 34°F (1.1°C) at the peak and 21.6°F (-5.8°C) at the low.
How much does it rain?
Throughout the year, there are 157.6 rainfall days, and 28.7" (729mm) of precipitation is accumulated.
When does it snow?
Months with snowfall in Washington are January through May, October through December.
How much does it snow?
In Washington, during the entire year, snow falls for 30.4 days and aggregates up to 14.76" (375mm) of snow.
What are the months with the lowest UV index?
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.
What is the most humid month?
With an average relative humidity of 81%, February is the most humid month in Washington.
What is the snowiest month?
February is the month with the most snowfall. Snow falls for 8.3 days and accumulates 3.82" (97mm) of snow.
What is the month with the least sunshine?
The month with the least sunshine is February, with an average of 4.6h of sunshine.
When is Daylight Saving Time (DST)?
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.
What is the least humid month?
The least humid month is April, with an average relative humidity of 76%.
When it does not snow in Washington?
June through September are months without snowfall.
When are the longest days?
With an average of 15h and 0min of daylight, June has the longest days of the year.
What are the months with the highest UV index?
June and July, with an average maximum UV index of 6, are months with the highest UV index.
What month is the hottest in Washington?
Washington experiences its highest temperatures in July, with an average peak of 83.7°F (28.7°C) and a low of 63°F (17.2°C).
What is the rainiest month?
July is the month with the most rainfall. Rain falls for 15.6 days and accumulates 2.87" (73mm) of precipitation.
What month has the most sunshine?
With an average of 10.3h of sunshine, July has the most sunshine of the year.
What is the driest month?
September is the month with the least rainfall. Rain falls for 11.5 days and accumulates 1.54" (39mm) of precipitation.
What is the month with the shortest days in Washington?
The month with the shortest days is December, with an average of 9h and 18min of daylight.
Average temperature
Washington, NJ
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (34°F).
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure
Washington, 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:
30.09"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
Washington, 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:
5.7mph
- 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
Washington, NJ
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall
Washington, NJ
- Average rainfall in January:
2.01" - Average rainfall in February:
1.97" - Average rainfall in March:
2.48" - Average rainfall in April:
2.52" - Average rainfall in May:
2.8" - Average rainfall in June:
2.44"
The wettest month (with the highest rainfall) is July (2.87").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days
Washington, NJ
- Average rainfall days in January:
8.1 days - Average rainfall days in February:
10.8 days - Average rainfall days in March:
13 days - Average rainfall days in April:
16.1 days - Average rainfall days in May:
16.5 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
15.6 days - Average rainfall days in August:
15.2 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
13.1 days - Average rainfall days in November:
10.2 days - Average rainfall days in December:
11.7 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is January (8.1 days).
Average snowfall
Washington, NJ
- Average snowfall in January:
3.07" - Average snowfall in February:
3.82" - Average snowfall in March:
3.78" - 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 (3.82").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Washington, NJ
- Average snowfall days in January:
8.4 days - Average snowfall days in February:
8.3 days - Average snowfall days in March:
6.4 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:
4.9 days
The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Washington, NJ
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
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:
4h and 5min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 1min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 3min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 4min - Average sunshine in October:
5h and 2min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 4min
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
Washington, NJ
- Average sunshine days in January:
16.3 days - Average sunshine days in February:
12.8 days - Average sunshine days in March:
13.1 days - Average sunshine days in April:
11.8 days - Average sunshine days in May:
12 days - Average sunshine days in June:
12.8 days
- Average sunshine days in July:
13.5 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
15.8 days - Average sunshine days in October:
15.7 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 April (11.8 days).
Average UV index
Washington, 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
Washington, 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
Washington, NJ
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Washington, New Jersey, USA
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