September weather forecast
Johnsontown, NJ

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Weather in September

The first month of the autumn, September, is still a warm month in Johnsontown, New Jersey, with an average temperature varying between 65.3°F (18.5°C) and 74.3°F (23.5°C).

Temperature

A subtle shift in Johnsontown's weather is observed as August turns into September, with the average high temperature reducing from 80.2°F (26.8°C) to a still moderately hot 74.3°F (23.5°C). An average nighttime temperature of 65.3°F (18.5°C) marks September.

Humidity

In September, the average relative humidity in Johnsontown is 77%.

Rainfall

The month with the least rainfall in Johnsontown is September, when the rain falls for 6.1 days and typically collects 0.28" (7mm) of precipitation.

Snowfall

April through November are months without snowfall.

Daylight

In Johnsontown, the average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 6:26 am and sunset at 7:28 pm. On the last day of September, in Johnsontown, sunrise is at 6:53 am and sunset at 6:41 pm EDT.

Sunshine

In September, the average sunshine is 9.2h.

UV index

The average daily maximum UV index in September in Johnsontown is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 5 in September interprets into the following advice:
Make use of precautions - Suggestions to resist sunburn are communicated. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
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Frequently asked questions

What is the average September temperature in Johnsontown?

September temperatures in Johnsontown vary between a high-temperature of 74.3°F (23.5°C) and a low-temperature of 65.3°F (18.5°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, in July is estimated at 86°F (30°C).

What is the average humidity in September in Johnsontown?

In Johnsontown, New Jersey, the average relative humidity in September is 77%.

What is the driest month in Johnsontown?

The month with the least rainfall in Johnsontown is September, when the rain falls for 6.1 days and typically collects 0.28" (7mm) of precipitation.

How many days does it rain in September in Johnsontown?

In September, in Johnsontown, the rain falls for 6.1 days. Throughout September, 0.28" (7mm) of precipitation is accumulated.

When it does not snow in Johnsontown?

April through November are months without snowfall in Johnsontown, New Jersey.

How many hours of daylight does Johnsontown have in September?

In September, the average day length in Johnsontown is 12h and 26min.

When is the sunrise / sunset in September in Johnsontown?

On the first day of September in Johnsontown, sunrise is at 6:26 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:41 pm EDT.

How long on average sun shines in September in Johnsontown?

In Johnsontown, New Jersey, the average sunshine duration in September is 9.2h.

What is the UV index reading in September in Johnsontown?

In September, the average daily maximum UV index in Johnsontown is 5. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Johnsontown, NJ

Average temperature in September - Johnsontown, NJ
  • Average high temperature in September: 74.3°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 September: 65.3°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 September
Johnsontown, NJ

Average pressure in September - Johnsontown, NJ
  • Average pressure in September: 30.04"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 September
Johnsontown, NJ

Average wind speed in September - Johnsontown, NJ
  • Average wind speed in September: 9.2mph

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 September
Johnsontown, NJ

Average humidity in September - Johnsontown, NJ
  • Average humidity in September: 77%

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 September
Johnsontown, NJ

Average rainfall in September - Johnsontown, NJ
  • Average rainfall in September: 0.28"

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 September
Johnsontown, NJ

Average rainfall days in September - Johnsontown, NJ
  • Average rainfall days in September: 6.1 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 September
Johnsontown, NJ

Average snowfall in September - Johnsontown, NJ
  • Average snowfall in September: 0"

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 September
Johnsontown, NJ

Average snowfall days in September - Johnsontown, NJ
  • Average snowfall days in September: 0 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 September /
Average sunshine in September
Johnsontown, NJ

Average daylight in September / Average sunshine in September - Johnsontown, NJ
  • Average daylight in September: 12h and 2min

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 September: 9h 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 September
Johnsontown, NJ

Average sunshine days in September - Johnsontown, NJ
  • Average sunshine days in September: 21.7 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 September
Johnsontown, NJ

Average UV index in September - Johnsontown, NJ
  • Average UV index in September: 5

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 September
Johnsontown, NJ

Average cloud cover in September - Johnsontown, NJ
  • Average cloud cover in September: 32

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 September
Johnsontown, NJ

Average visibility in September - Johnsontown, NJ
  • Average visibility in September: 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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