Baltimore is typically warm in August.

Maximum temperatures go down compared to the previous month from +88°F to +86°F. The minimum temperature also goes down from +72°F to +70°F.

It’s generally warm, but pack a long-sleeve shirt for evenings.

August is one of the warmest months in Baltimore, here is the comparison with other months:

August weather is still as good as in July. It’s getting colder in August. From +88°F in the day, the average maximum temperature lowers to +86°F. As August arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 114 mm to 111 mm. Humidity levels don’t change as the month goes on, averaging around 73%. The average wind speed doesn’t change much during August, staying around 2 m/s. The good news is there are likely to be more sunny days in August, from 4 to 6.

September brings much the same weather, it remains good.

The climate in Baltimore in August has not changed that much over the last 43 years.

The average temperature was the lowest in 1996 (+62°F) and the highest in 2012 (+69°F). The driest year was 1987 with only 818 mm of rainfall, and the wettest year was 2018 with 1993 mm.

For this page, we’ve looked at the typical weather in Baltimore, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.