August weather forecast
Horsham, PA

Share

Weather in August

The last month of the summer, August, is another warm month in Horsham, Pennsylvania, with an average temperature fluctuating between 83.3°F (28.5°C) and 66.2°F (19°C).

Temperature

The average high-temperature for August is a still moderately hot 83.3°F (28.5°C), closely aligning with the temperature of the preceding month. August brings Horsham a consistent average low-temperature of 66.2°F (19°C).

Heat index

Throughout August, the heat index is computed to be a tropical 89.6°F (32°C). Fatigue might occur with continuous exposure and activity, potentially causing heat cramps.
Understand that the heat index values take into account shaded locations and mild winds. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'feels like' or 'apparent temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.

Humidity

April, July and August, with an average relative humidity of 72%, are the least humid months in Horsham.

Rainfall

In Horsham, in August, it is raining for 8.5 days, with typically 0.59" (15mm) of accumulated precipitation. In Horsham, during the entire year, the rain falls for 83.7 days and collects up to 6.22" (158mm) of precipitation.

Snowfall

June through October are months without snowfall.

Daylight

The average length of the day in August in Horsham is 13h and 43min.
On the first day of August in Horsham, sunrise is at 5:59 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:33 pm EDT.

Sunshine

In Horsham, the average sunshine in August is 10.2h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Horsham. 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: The maximum daily UV index of 6 in August converts into the following recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
[Resources]

Frequently asked questions

How hot is August in Horsham?

An average high-temperature, in August, in Horsham, is 83.3°F (28.5°C) and the average low-temperature is 66.2°F (19°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in August is computed to be 89.6°F (32°C).

What are the least humid months in Horsham?

April, July and August, with an average relative humidity of 72%, are the least humid months.

What is the average humidity in August in Horsham?

The average relative humidity in August in Horsham is 72%.

How much does it rain in Horsham in August?

In Horsham, during August, the rain falls for 8.5 days and regularly aggregates up to 0.59" (15mm) of precipitation.

When it does not snow in Horsham?

June through October are months without snowfall in Horsham, Pennsylvania.

How many hours of daylight does Horsham have in August?

In Horsham, Pennsylvania, the average day length in August is 13h and 43min.

What time are sunrise and sunset in August in Horsham?

On the first day of August in Horsham, Pennsylvania, sunrise is at 5:59 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:33 pm EDT.

How many hours of sunshine does Horsham have in August?

In Horsham, the average sunshine duration in August is 10.2h.

What is the month with the highest UV index in Horsham?

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

What is the UV index reading in August in Horsham?

In August, the average daily maximum UV index in Horsham is 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.
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 August
Horsham, PA

Average temperature in August - Horsham, PA
  • Average high temperature in August: 83.3°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in August: 66.2°F

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

[Resources]

Average pressure in August
Horsham, PA

Average pressure in August - Horsham, PA
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

[Resources]

Average wind speed in August
Horsham, PA

Average wind speed in August - Horsham, PA
  • Average wind speed in August: 5.3mph

The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

[Resources]

Average humidity in August
Horsham, PA

Average humidity in August - Horsham, PA
  • Average humidity in August: 72%

The months with the highest relative humidity are February, October and December (78%).
The months with the lowest relative humidity are April, July and August (72%).

[Resources]

Average rainfall in August
Horsham, PA

Average rainfall in August - Horsham, PA
  • Average rainfall in August: 0.59"

The wettest month (with the highest rainfall) is December (0.75").
The driest month (with the least rainfall) is September (0.2").

[Resources]

Average rainfall days in August
Horsham, PA

Average rainfall days in August - Horsham, PA
  • Average rainfall days in August: 8.5 days

The month with the highest number of rainy days is July (10.3 days).
The month with the least rainy days is January (4.3 days).

[Resources]

Average snowfall in August
Horsham, PA

Average snowfall in August - Horsham, PA
  • Average snowfall in August: 0"

The month with the highest snowfall is February (0.43").
The months with the least snowfall are June, July, August, September and October (0").

[Resources]

Average snowfall days in August
Horsham, PA

Average snowfall days in August - Horsham, PA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (3.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

[Resources]

Average daylight in August /
Average sunshine in August
Horsham, PA

Average daylight in August / Average sunshine in August - Horsham, PA
  • Average daylight in August: 13h and 4min

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).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

[Resources]

Average sunshine days in August
Horsham, PA

Average sunshine days in August - Horsham, PA
  • Average sunshine days in August: 20.3 days

The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is July (17.4 days).

[Resources]

Average UV index in August
Horsham, PA

Average UV index in August - Horsham, PA
  • Average UV index in August: 6

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).

[Resources]

Average cloud cover in August
Horsham, PA

Average cloud cover in August - Horsham, PA
  • Average cloud cover in August: 33

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).

[Resources]

Average visibility in August
Horsham, PA

Average visibility in August - Horsham, PA
  • Average visibility in August: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).

[Resources]

Horsham, Pennsylvania, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location