Climate and monthly weather forecast
Jamesburg, NJ

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Weather in January

January, the same as December, is another cold winter month in Jamesburg, New Jersey, with an average temperature varying between 37°F (2.8°C) and 25°F (-3.9°C). Jamesburg's temperature records reveal January as the coldest month, marked by average highs of 37°F (2.8°C) and lows of 25°F (-3.9°C). Weather in January »

Weather in February

The last month of the winter, February, is also an icy month in Jamesburg, New Jersey, with temperature in the range of an average high of 39.9°F (4.4°C) and an average low of 26.6°F (-3°C). February's onset brings an average high-temperature of a still wintry 39.9°F (4.4°C), showing a minute difference from January's 37°F (2.8°C). Weather in February »

Weather in March

March, the first month of the spring in Jamesburg, is a frosty month, with an average temperature ranging between max 47.8°F (8.8°C) and min 34.2°F (1.2°C). Jamesburg's transition into March sees a mild rise in the average high-temperature, edging from a cold 39.9°F (4.4°C) in February to a frosty 47.8°F (8.8°C). Weather in March »

Weather in April

April in Jamesburg, New Jersey, is a moderate spring month, with temperature in the range of an average low of 43.9°F (6.6°C) and an average high of 59.4°F (15.2°C). Jamesburg's transition into April is marked by a rise in the average high-temperature, advancing from a frosty 47.8°F (8.8°C) in March to a mild 59.4°F (15.2°C). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Jamesburg, New Jersey, with an average temperature fluctuating between 69.4°F (20.8°C) and 54°F (12.2°C). An escalation in the average high-temperature is seen with the onset of May, moving from a refreshing 59.4°F (15.2°C) in 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 Jamesburg, New Jersey, with an average temperature fluctuating between 61.5°F (16.4°C) and 77.9°F (25.5°C). The arrival of June introduces a minor uplift in high-temperatures, adjusting from a pleasant 69.4°F (20.8°C) in May to a moderately hot 77.9°F (25.5°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Jamesburg, New Jersey, with an average temperature fluctuating between 84.2°F (29°C) and 68°F (20°C). July, characterized by an average high temperature of 84.2°F (29°C) and a low temperature of 68°F (20°C), is generally the warmest month. Throughout 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 Jamesburg, is another warm month, with an average temperature ranging between max 82.4°F (28°C) and min 67.3°F (19.6°C). At the onset of August, Jamesburg records an average high-temperature of a still warm 82.4°F (28°C), showing little deviation from the preceding month. Weather in August »

Weather in September

September, the first month of the autumn in Jamesburg, is still a warm month, with an average temperature varying between 75.7°F (24.3°C) and 60.6°F (15.9°C). As September arrives, Jamesburg's weather displays a minor decrease in high-temperatures, transitioning from August's moderately hot 82.4°F (28°C) to a still warm 75.7°F (24.3°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in Jamesburg, New Jersey, with temperature in the range of an average low of 50.4°F (10.2°C) and an average high of 63.9°F (17.7°C). The start of October comes with a reduction in the average high-temperature, receding from a moderately hot 75.7°F (24.3°C) in September to a comfortable 63.9°F (17.7°C). Weather in October »

Weather in November

November, the last month of the autumn in Jamesburg, is also a fresh month, with an average temperature fluctuating between 52°F (11.1°C) and 38.8°F (3.8°C). During Jamesburg's transition into November, the average high-temperature lessens, moving from a refreshing 63.9°F (17.7°C) in October to a cool 52°F (11.1°C). Weather in November »

Weather in December

The first month of the winter, December, is also a frosty month in Jamesburg, New Jersey, with temperature in the range of an average high of 43.2°F (6.2°C) and an average low of 32.7°F (0.4°C). With the arrival of December, Jamesburg experiences a modest decline in average high-temperatures, transitioning from a fresh 52°F (11.1°C) in November to a frosty 43.2°F (6.2°C). Weather in December »

Frequently asked questions

What month is the coldest?

January is the coldest month of the year, registering average temperatures as high as 37°F (2.8°C) and as low as 25°F (-3.9°C).

How many days does it rain?

In Jamesburg, during the entire year, the rain falls for 92.9 days and collects up to 7.32" (186mm) of precipitation.

When does it snow?

Months with snowfall are January through March, November and December.

How much does it snow?

Throughout the year, there are 12.7 snowfall days, and 1.5" (38mm) of snow is accumulated.

When is 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 are the most humid months?

The months with the highest humidity are February, May, October and December, with an average relative humidity of 77%.

What is the month with the least sunshine?

With an average of 4.7h of sunshine, February has the least sunshine of the year.

What is the snowiest month?

March is the month with the most snowfall. Snow falls for 3 days and accumulates 0.51" (13mm) 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 are the least humid months?

April and August, with an average relative humidity of 73%, are the least humid months.

When it does not snow?

April through October are months without snowfall.

What is the month with the highest UV index?

The months with the highest UV index are May through August, with an average maximum UV index of 6.

When are the longest days?

June has the longest days of the year, with an average of 15h and 0min of daylight.

What is the hottest time of year?

Jamesburg's warmest month, July, registers temperatures that range from a high of 84.2°F (29°C) to a low of 68°F (20°C).

What is the rainiest month in Jamesburg?

July is the month with the most rainfall. Rain falls for 10.7 days and accumulates 0.94" (24mm) of precipitation.

What month has the most sunshine?

July has the most sunshine of the year in Jamesburg, with an average of 10.5h of sunshine.

What is the driest month?

September is the month with the least rainfall. Rain falls for 7.5 days and accumulates 0.28" (7mm) of precipitation.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 24min of daylight.

Average temperature
Jamesburg, NJ

Average temperature - Jamesburg, NJ

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (37°F).

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (25°F).

Average pressure
Jamesburg, NJ

Average pressure - Jamesburg, NJ

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
Jamesburg, NJ

Average wind speed - Jamesburg, NJ

The windiest month (with the highest average wind speed) is March (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).

Average humidity
Jamesburg, NJ

Average humidity - Jamesburg, NJ

The months with the highest relative humidity are February, May, October and December (77%).
The months with the lowest relative humidity are April and August (73%).

Average rainfall
Jamesburg, NJ

Average rainfall - Jamesburg, NJ

The wettest month (with the highest rainfall) is July (0.94").
The driest month (with the least rainfall) is September (0.28").

Average rainfall days
Jamesburg, NJ

Average rainfall days - Jamesburg, NJ

The month with the highest number of rainy days is July (10.7 days).
The months with the least rainy days are January and November (4.8 days).

Average snowfall
Jamesburg, NJ

Average snowfall - Jamesburg, NJ

The month with the highest snowfall is March (0.51").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days
Jamesburg, NJ

Average snowfall days - Jamesburg, NJ

The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight / Average sunshine
Jamesburg, NJ

Average daylight / Average sunshine - Jamesburg, NJ

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 24min).

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 42min).

Average sunshine days
Jamesburg, NJ

Average sunshine days - Jamesburg, NJ

The month with the most sunshine days is January (24.2 days).
The month with the least sunshine days is July (15.7 days).

Average UV index
Jamesburg, NJ

Average UV index - Jamesburg, NJ

The months with the highest UV index are May, 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
Jamesburg, NJ

Average cloud cover - Jamesburg, NJ

The months with the most cloud cover are February, March and December (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 32).

Average visibility
Jamesburg, NJ

Average visibility - Jamesburg, NJ

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).

Jamesburg, New Jersey, USA

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