August Weather in Lewiston

Last updated: March 2, 2024

The weather in Lewiston, United States, during August is characterized by an average temperature of 20°C (69°F). Highs can soar to 33°C (91°F), while lows may dip to 7°C (45°F). Typically, the humidity level in Lewiston throughout August hovers around 37%.

7°C (45°F)

Minimum temperature

20°C (69°F)

Average temperature

33°C (91°F)

Maximum temperature

37%

Humidity

Precipitation and Sunshine hours

In August, Lewiston averages 23 mm (0.9 inches) of rainfall, typically over the course of 4 rainy days. The month enjoys an average of 13 hours 46 minutes of daylight, with the sun shining for approximately 11 hours 35 minutes each day. Additionally, there is a 72% probability of sunny days during this period.

23 mm (0.9 inches)

Precipitation

4 rainy days

Rainy days

11 hours 35 minutes

Sunshine hours

72%

Chance of sun

UV Index

In August, the UV Index in Lewiston reaches a maximum of 11, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 10 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 3 5 7 9 11 10 9 7 4 2 1
Exposure Low Moderate High VeryHigh Extreme VeryHigh High Moderate Low
Time to burn 45 min 30 min 25 min 15 min 10 min 15 min 25 min 30 min 45 min

Compare Lewiston's Climate with Cities Worldwide