July weather forecastWilliamsport, PA

July

Weather in July

July brings forth the hottest weather conditions for Williamsport in the year. Fluctuations in temperature are minimal, with an average recorded high of 81.7°F (27.6°C), the highest for the year. Despite the consistent sunshine, the air clings to a high humidity level making conditions feel hotter than recorded. Coupled with a UV index of 6, it’s advised to take necessary precautions while venturing outdoors. The heatwave persists throughout the month, underlining the peak of the Pennsylvania summer.

Temperature

Williamsport experiences its highest temperatures in July, with an average peak of 81.7°F (27.6°C) and a low of 59.2°F (15.1°C).

Heat index

In July, the heat index is evaluated at a tropical 87.8°F (31°C). With ongoing exposure and activity, one might experience weariness, and heat cramps could ensue.
Note that heat index values are valued for light wind and location in the shade. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is achieved by amalgamating air temperature with the relative humidity readings. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.

Humidity

The months with the lowest humidity are April and July, with an average relative humidity of 77%.

Rainfall

In Williamsport, in July, it is raining for 15.8 days, with typically 1.69" (43mm) of accumulated precipitation. In Williamsport, during the entire year, the rain falls for 145.2 days and collects up to 16.57" (421mm) of precipitation.

Snowfall

In Williamsport, snow does not fall in May through September.

Daylight

The average length of the day in July is 14h and 48min.
On the first day of July, sunrise is at 5:39 am and sunset at 8:44 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 8:25 pm EDT.

Sunshine

July has the most sunshine of the year, with an average of 10.1h of sunshine.

UV index

The month with the highest UV index is July, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: In July, the maximum UV index of 6 transforms into these recommendations:
Guard oneself from overexposure. Defence against sun injury is vital. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.

Updated: Jun 3, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Williamsport's July weather, marked by an average high temperature of 81.7°F (27.6°C) and an average low temperature of 59.2°F (15.1°C), is the warmest in the year.

The high-temperature, in July, in Williamsport, is 81.7°F (27.6°C), while the low-temperature averages to 59.2°F (15.1°C). In July, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is evaluated at 87.8°F (31°C).

The months with the lowest humidity are April and July, with an average relative humidity of 77%.

In Williamsport, the average relative humidity in July is 77%.

In July, the rain falls for 15.8 days. Throughout July, 1.69" (43mm) of precipitation is accumulated.

In Williamsport, snow does not fall in May through September.

In Williamsport, the average day length in July is 14h and 48min.

On the first day of July, sunrise is at 5:39 am and sunset at 8:44 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 8:25 pm EDT.

The month with the most sunshine is July, with an average of 10.1h of sunshine.

In July, the average sunshine duration is 10.1h.

The month with the highest UV index is July, with an average maximum UV index of 6.

The average daily maximum UV index in July is 6. A UV Index reading of 6 to 7 represents a high hazard to health from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J July A S O N D

Jun

July

Aug

Average high temperature

76.1°F

81.7°F

79.2°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

6.4mph

5.5mph

5.2mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

14.7

15.8

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

12.9

14.8

Average UV index

Average cloud cover

Average visibility

Average temperature in July
Williamsport, PA

Average high temperature in July: 81.7°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (30.6°F).

Average low temperature in July: 59.2°F

The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

Average pressure in July
Williamsport, PA

Average pressure in July: 29.98"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in July
Williamsport, PA

Average wind speed in July: 5mph

The windiest months (with the highest average wind speed) are January, March and April (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in July
Williamsport, PA

Average humidity in July: 77%

The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are April and July (77%).

Average rainfall in July
Williamsport, PA

Average rainfall in July: 1.69"

The wettest month (with the highest rainfall) is April (1.93").
The driest month (with the least rainfall) is November (0.94").

Average rainfall days in July
Williamsport, PA

Average rainfall days in July: 15.8 days

The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is February (7.5 days).

Average snowfall in July
Williamsport, PA

Average snowfall in July: 0"

The month with the highest snowfall is February (2.28").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in July
Williamsport, PA

Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in July /
Average sunshine in July
Williamsport, PA

Average daylight in July: 14h and 48min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

Average sunshine in July: 10h and 6min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The months with the least sunshine are January and February (Average sunshine: 3h and 42min).

Average sunshine days in July
Williamsport, PA

Average sunshine days in July: 12.9 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (11.8 days).

Average UV index in July
Williamsport, PA

Average UV index in July: 6

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).