January weather forecast
Johnsontown, NJ

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Weather in January

January, the same as December, is another cold winter month in Johnsontown, New Jersey, with an average temperature fluctuating between 30.4°F (-0.9°C) and 39.9°F (4.4°C).

Temperature

Johnsontown's January weather, with an average high temperature of 39.9°F (4.4°C) and an average low temperature of 30.4°F (-0.9°C), tends to be the coldest of the year.

Humidity

The months with the lowest humidity in Johnsontown are January, March, April and November, with an average relative humidity of 74%.

Rainfall

In January, in Johnsontown, the rain falls for 4.5 days. Throughout January, 0.39" (10mm) of precipitation is accumulated. Throughout the year, there are 86.1 rainfall days, and 6.69" (170mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Johnsontown are January through March and December. January is the month with the most snowfall. Snow falls for 1.9 days and accumulates 0.2" (5mm) of snow.

Daylight

In January, the average length of the day in Johnsontown is 9h and 46min.
On the first day of the month, sunrise is at 7:18 am and sunset at 4:44 pm. On the last day of January, sunrise is at 7:06 am and sunset at 5:16 pm EST.

Sunshine

In Johnsontown, the average sunshine in January is 5.2h.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.
Note: An average maximum UV index of 2 in January leads to these recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
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Frequently asked questions

What are the coldest months in Johnsontown?

Johnsontown's January weather, marked by an average high temperature of 39.9°F (4.4°C) and an average low temperature of 30.4°F (-0.9°C), is the coldest in the year.

How cold is January in Johnsontown?

An average high-temperature, in January, in Johnsontown, is 39.9°F (4.4°C) and the average low-temperature is 30.4°F (-0.9°C).

What is the least humid month in Johnsontown?

The months with the lowest humidity in Johnsontown, New Jersey, are January, March, April and November, with an average relative humidity of 74%.

What is the average humidity in January in Johnsontown?

In January, the average relative humidity in Johnsontown is 74%.

How many days does it rain in January in Johnsontown?

In Johnsontown, in January, it is raining for 4.5 days, with typically 0.39" (10mm) of accumulated precipitation.

When does it snow the most in Johnsontown?

The month with the most snowfall is January, when snow falls for 1.9 days and typically aggregates up to 0.2" (5mm) of snow.

How many days does it snow in January in Johnsontown?

In January, in Johnsontown, New Jersey, it is snowing for 1.9 days. Throughout January, 0.2" (5mm) of snow is accumulated.

What is the average length of the day in January in Johnsontown?

The average day length in January in Johnsontown is 9h and 46min.

When is the sunrise / sunset in January in Johnsontown?

In January, on the first day of the month, sunrise is at 7:18 am and sunset at 4:44 pm. On the last day of the month, in Johnsontown, New Jersey, sunrise is at 7:06 am and sunset at 5:16 pm EST.

How long on average sun shines in January in Johnsontown?

The average sunshine duration in January in Johnsontown, New Jersey, is 5.2h.

When is the lowest UV index in Johnsontown?

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index.

How high is the UV index in January in Johnsontown?

The average daily maximum UV index in January in Johnsontown, New Jersey, is 2. A UV Index of 2, and less, symbolizes a low health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Johnsontown, NJ

Average temperature in January - Johnsontown, NJ
  • Average high temperature in January: 39.9°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (39.9°F).

  • Average low temperature in January: 30.4°F

The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (30.4°F).

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Average pressure in January
Johnsontown, NJ

Average pressure in January - Johnsontown, NJ
  • Average pressure in January: 30.07"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in January
Johnsontown, NJ

Average wind speed in January - Johnsontown, NJ
  • Average wind speed in January: 11.7mph

The windiest month (with the highest average wind speed) is January (11.7mph).
The calmest month (with the lowest average wind speed) is August (8mph).

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Average humidity in January
Johnsontown, NJ

Average humidity in January - Johnsontown, NJ
  • Average humidity in January: 74%

The months with the highest relative humidity are May and June (80%).
The months with the lowest relative humidity are January, March, April and November (74%).

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Average rainfall in January
Johnsontown, NJ

Average rainfall in January - Johnsontown, NJ
  • Average rainfall in January: 0.39"

The wettest month (with the highest rainfall) is December (0.75").
The driest month (with the least rainfall) is September (0.28").

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Average rainfall days in January
Johnsontown, NJ

Average rainfall days in January - Johnsontown, NJ
  • Average rainfall days in January: 4.5 days

The month with the highest number of rainy days is July (10.3 days).
The month with the least rainy days is January (4.5 days).

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Average snowfall in January
Johnsontown, NJ

Average snowfall in January - Johnsontown, NJ
  • Average snowfall in January: 0.2"

The month with the highest snowfall is January (0.2").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in January
Johnsontown, NJ

Average snowfall days in January - Johnsontown, NJ
  • Average snowfall days in January: 1.9 days

The month with the highest number of snowfall days is January (1.9 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average daylight in January /
Average sunshine in January
Johnsontown, NJ

Average daylight in January / Average sunshine in January - Johnsontown, NJ
  • Average daylight in January: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in January: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

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Average sunshine days in January
Johnsontown, NJ

Average sunshine days in January - Johnsontown, NJ
  • Average sunshine days in January: 24.3 days

The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is August (18.2 days).

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Average UV index in January
Johnsontown, NJ

Average UV index in January - Johnsontown, NJ
  • Average UV index in January: 2

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 and December (UV index 2).

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Average cloud cover in January
Johnsontown, NJ

Average cloud cover in January - Johnsontown, NJ
  • Average cloud cover in January: 42

The month with the most cloud cover is February (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 27).

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Average visibility in January
Johnsontown, NJ

Average visibility in January - Johnsontown, NJ
  • Average visibility in January: 6mi

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).

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Johnsontown, New Jersey, USA

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