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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, like December, in Rocky Hill, New Jersey, is an icy winter month, with an average temperature fluctuating between 24.3°F (-4.3°C) and 36.9°F (2.7°C). The coldest time of the year is January, with temperatures averaging a high of 36.9°F (2.7°C) and a low of 24.3°F (-4.3°C). Weather in January »
Weather in February
February, the last month of the winter in Rocky Hill, is another cold month, with temperature in the range of an average low of 26.1°F (-3.3°C) and an average high of 39.9°F (4.4°C). As Rocky Hill transitions into February, the average high-temperature stands at a still wintry 39.9°F (4.4°C), offering little variation from the preceding month. Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Rocky Hill, New Jersey, with an average temperature varying between 33.3°F (0.7°C) and 48.6°F (9.2°C). Rocky Hill's transition into March sees a mild rise in the average high-temperature, edging from a wintry 39.9°F (4.4°C) in February to a frosty 48.6°F (9.2°C). Weather in March »
Weather in April
April is a moderate spring month in Rocky Hill, New Jersey, with an average temperature ranging between min 43.3°F (6.3°C) and max 60.4°F (15.8°C). The shift into April is accompanied by a temperature increase, with the average high-temperature rising from a frosty 48.6°F (9.2°C) in March to a refreshing 60.4°F (15.8°C). Weather in April »
Weather in May
May, the last month of the spring in Rocky Hill, is an agreeable month, with an average temperature ranging between min 53.2°F (11.8°C) and max 70.5°F (21.4°C). In May, the meteorological conditions change with the average high-temperature moving from a moderate 60.4°F (15.8°C) in April to a pleasant 70.5°F (21.4°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Rocky Hill, New Jersey, with an average temperature fluctuating between 78.4°F (25.8°C) and 61°F (16.1°C). Observing a slight rise in June, the average high-temperature shifts from May's agreeable 70.5°F (21.4°C) to a moderately hot 78.4°F (25.8°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Rocky Hill, New Jersey, with an average temperature ranging between max 84.7°F (29.3°C) and min 66.9°F (19.4°C). July, characterized by an average high temperature of 84.7°F (29.3°C) and a low temperature of 66.9°F (19.4°C), is generally the warmest month. July's average heat index is estimated at a tropical 93.2°F (34°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Rocky Hill, New Jersey, with temperature in the range of an average low of 65.8°F (18.8°C) and an average high of 82.9°F (28.3°C). The average high-temperature is a still moderately hot 82.9°F (28.3°C) in August, hardly different from the 84.7°F (29.3°C) recorded in July. Weather in August »
Weather in September
September, the first month of the autumn in Rocky Hill, is still a warm month, with temperature in the range of an average low of 59°F (15°C) and an average high of 75.7°F (24.3°C). Rocky Hill's progression into September involves a minor drop in the average high-temperature, slightly receding from a warm 82.9°F (28.3°C) in August to a still moderately hot 75.7°F (24.3°C). Weather in September »
Weather in October
October, the same as September, is another enjoyable autumn month in Rocky Hill, New Jersey, with an average temperature ranging between max 63.9°F (17.7°C) and min 49.1°F (9.5°C). Rocky Hill experiences a temperature shift at the start of October, with average high-temperatures adjusting from a warm 75.7°F (24.3°C) in September to a refreshing 63.9°F (17.7°C). Weather in October »
Weather in November
November, the last month of the autumn in Rocky Hill, is also a fresh month, with an average temperature fluctuating between 51.8°F (11°C) and 37.8°F (3.2°C). The transition into November indicates a reduction in the average high-temperature, down to a fresh 51.8°F (11°C) from October's comfortable 63.9°F (17.7°C). Weather in November »
Weather in December
December, the first month of the winter in Rocky Hill, is also a frosty month, with an average temperature ranging between max 43°F (6.1°C) and min 31.1°F (-0.5°C). The commencement of December indicates a gentle shift in the average high-temperature, receding from November's cool 51.8°F (11°C) to a frosty 43°F (6.1°C). Weather in December »
Updated: Aug 16, 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 month is the coldest?
January, on average, is the coldest month, registering a high temperature of 36.9°F (2.7°C) and a low of 24.3°F (-4.3°C).
How many days does it rain?
Throughout the year, there are 119.3 rainfall days, and 12.72" (323mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through May, November and December.
How many days does it snow?
Throughout the year, there are 16.4 snowfall days, and 4.41" (112mm) of snow is accumulated.
What are the months with the lowest UV index?
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the month with the least sunshine in Rocky Hill?
The month with the least sunshine is February, with an average of 4.8h of sunshine.
What is the snowiest month?
The month with the most snowfall is March, when snow falls for 3.7 days and typically aggregates up to 1.42" (36mm) of snow.
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 in Rocky Hill?
April is the least humid month in Rocky Hill, with an average relative humidity of 73%.
When it does not snow?
June through October are months without snowfall in Rocky Hill.
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?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What is the hottest time of year?
Rocky Hill experiences its highest temperatures in July, with an average peak of 84.7°F (29.3°C) and a low of 66.9°F (19.4°C).
What is the rainiest month?
July is the month with the most rainfall. Rain falls for 13.9 days and accumulates 1.69" (43mm) of precipitation.
What month has the most sunshine in Rocky Hill?
The month with the most sunshine is July, with an average of 10.5h of sunshine.
What is the driest month?
The month with the least rainfall is September, when the rain falls for 10 days and typically collects 0.67" (17mm) of precipitation.
What is the most humid month in Rocky Hill?
The most humid month is October, with an average relative humidity of 79%.
What is the month with the shortest days?
With an average of 9h and 18min of daylight, December has the shortest days of the year.
Average temperature
Rocky Hill, NJ
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (36.9°F).
The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure
Rocky Hill, 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:
29.99"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:
30.11"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
Rocky Hill, NJ
- Average wind speed in January:
8.5mph - Average wind speed in February:
8.5mph - Average wind speed in March:
8.8mph - Average wind speed in April:
8.5mph - Average wind speed in May:
6.9mph - Average wind speed in June:
6.3mph
- Average wind speed in July:
5.5mph - Average wind speed in August:
5.4mph - Average wind speed in September:
6mph - Average wind speed in October:
7.1mph - Average wind speed in November:
7.5mph - Average wind speed in December:
7.8mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity
Rocky Hill, NJ
The month with the highest relative humidity is October (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall
Rocky Hill, NJ
- Average rainfall in January:
0.71" - Average rainfall in February:
0.83" - Average rainfall in March:
1.06" - Average rainfall in April:
0.83" - Average rainfall in May:
1.22" - Average rainfall in June:
1.02"
- Average rainfall in July:
1.69" - Average rainfall in August:
1.5" - Average rainfall in September:
0.67" - Average rainfall in October:
1.02" - Average rainfall in November:
0.91" - Average rainfall in December:
1.26"
The wettest month (with the highest rainfall) is July (1.69").
The driest month (with the least rainfall) is September (0.67").
Average rainfall days
Rocky Hill, NJ
- Average rainfall days in January:
6.1 days - Average rainfall days in February:
6.7 days - Average rainfall days in March:
9.8 days - Average rainfall days in April:
11.3 days - Average rainfall days in May:
12.6 days - Average rainfall days in June:
12.3 days
- Average rainfall days in July:
13.9 days - Average rainfall days in August:
12.6 days - Average rainfall days in September:
10 days - Average rainfall days in October:
9.3 days - Average rainfall days in November:
6.5 days - Average rainfall days in December:
8.2 days
The month with the highest number of rainy days is July (13.9 days).
The month with the least rainy days is January (6.1 days).
Average snowfall
Rocky Hill, NJ
- Average snowfall in January:
0.79" - Average snowfall in February:
0.94" - Average snowfall in March:
1.42" - Average snowfall in April:
0.12" - Average snowfall in May:
0.2" - Average snowfall in June:
0"
The month with the highest snowfall is March (1.42").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days
Rocky Hill, NJ
- Average snowfall days in January:
4.6 days - Average snowfall days in February:
4.4 days - Average snowfall days in March:
3.7 days - Average snowfall days in April:
0.3 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 days - Average snowfall days in November:
0.6 days - Average snowfall days in December:
2.7 days
The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight / Average sunshine
Rocky Hill, 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 2min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 0min - 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:
5h and 1min - Average sunshine in February:
4h and 5min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 2min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
10h and 3min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 4min - Average sunshine in December:
5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days
Rocky Hill, NJ
- Average sunshine days in January:
21.8 days - Average sunshine days in February:
18.2 days - Average sunshine days in March:
16.8 days - Average sunshine days in April:
16.8 days - Average sunshine days in May:
15 days - Average sunshine days in June:
15.7 days
- Average sunshine days in July:
13.3 days - Average sunshine days in August:
16.3 days - Average sunshine days in September:
17.2 days - Average sunshine days in October:
19.2 days - Average sunshine days in November:
21.7 days - Average sunshine days in December:
20.5 days
The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is July (13.3 days).
Average UV index
Rocky Hill, 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
Rocky Hill, NJ
The months with the most cloud cover are February, March and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility
Rocky Hill, NJ
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Rocky Hill, New Jersey, USA
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