August Weather in Johnstown

Last updated: March 2, 2024

The weather in Johnstown, United States, during August is characterized by an average temperature of 23°C (73°F). Highs can soar to 31°C (89°F), while lows may dip to 13°C (55°F). Typically, the humidity level in Johnstown throughout August hovers around 78%.

13°C (55°F)

Minimum temperature

23°C (73°F)

Average temperature

31°C (89°F)

Maximum temperature

78%

Humidity

Precipitation and Sunshine hours

In August, Johnstown averages 76 mm (3.0 inches) of rainfall, typically over the course of 12 rainy days. The month enjoys an average of 13 hours 40 minutes of daylight, with the sun shining for approximately 10 hours 26 minutes each day. Additionally, there is a 42% probability of sunny days during this period.

76 mm (3.0 inches)

Precipitation

12 rainy days

Rainy days

10 hours 26 minutes

Sunshine hours

42%

Chance of sun

UV Index

In August, the UV Index in Johnstown reaches a maximum of 9, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 15 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
UVI 1 1 2 4 6 8 9 9 8 6 4 2 1
Exposure Low Moderate High VeryHigh High Moderate Low
Time to burn 45 min 30 min 25 min 15 min 25 min 30 min 45 min

Compare Johnstown's Climate with Cities Worldwide