Rialto Weather in August

August in Rialto averages 35°C (95°F) during the day and 18°C (64°F) at night. With only 3.9 mm (0.2 in) of rainfall expected on average, it's a largely dry month.

Rainfall in Rialto in August

Climate statistics over the past 30 years suggest around a single day of rain, with 3.9 mm (0.2 in) average for the month. On the rare occasion it rains this month, it usually amounts to very little.

Temperature in Rialto in August

Daytime highs in Rialto in August reach 35°C (95°F), with nights around 18°C (64°F). Mornings and evenings are often more comfortable than the peak afternoon hours. With overnight lows of 18°C (64°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep. Remember, these are typical temperatures, and certain days could be even hotter. Ensure you wear appropriate clothing to handle the warmth.

Sunshine in Rialto in August

The month enjoys around 351 hours of sunshine, creating mostly sunny days with good weather conditions.

August in Rialto can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.