As summer peaks, the U.S. weather on August 19, 2025, brings a mix of cooler-than-average temperatures, widespread rainfall, and regional variations driven by a shifting cold front. From stormy conditions in the Southeast to dry, warm weather in the West, here’s a comprehensive forecast to help you plan your day, whether you’re commuting, traveling, or preparing for outdoor activities. Stay informed with this detailed breakdown from Click USA News.

National Weather Snapshot

August 2025 is slightly cooler than typical, with an average temperature around 25.5°C (78°F) on August 19, about 0.8°F below the historical average for the month. A cold front sweeping south from Canada is cooling parts of the central and eastern U.S., while the West remains warm and dry. Expect a wet month, with over 20 rainy days and 124.5 mm (4.9 inches) of precipitation nationwide, especially in the Southeast and Midwest. Tropical Storm Erin, active in the Atlantic, may bring coastal impacts but is likely to veer offshore.

Regional Forecast Breakdown

Here’s what to expect in major U.S. regions, with details for key cities:

Northeast

• New York City: Highs of 29°C (84°F), lows of 21°C (70°F). Moderate humidity with 9 hours of sunshine (62% of daylight). August sees 9 rainy days with 100 mm (3.94 inches) of rainfall, so expect possible showers.
• Boston: Highs of 27°C (81°F), lows of 18°C (64°F). Comfortable but with a chance of thunderstorms.
• Washington, D.C.: Highs of 30°C (86°F), lows of 20°C (68°F). Humid with 8 hours of sunshine and 9 rainy days averaging 103 mm (4.06 inches).
• Impact: Great for urban exploration, but keep rain gear handy for sudden showers. Commuters should monitor transit alerts for potential weather delays.

Midwest

• Chicago: Highs of 26°C (79°F), lows of 20°C (68°F). Warm with a risk of thunderstorms and a Level 2/4 flooding threat due to heavy rain potential.
• Minneapolis: Similar to Chicago, with cooler evenings. Wildfire smoke from the West may create hazy skies, impacting air quality.
• Impact: Plan for indoor backups for outdoor events, as storms are likely in the afternoon. Check air quality if you have respiratory issues.

South

• Atlanta: Highs of 32°C (90°F), lows of 22°C (72°F). Very warm with 9 rainy days, totaling 5.1 inches of rainfall, often as brief showers.
• Houston: Highs of 35°C (95°F), lows of 26°C (79°F). Hot, humid, with rare rainfall but high flood risk in low-lying areas.
• Miami: Highs of 31°C (88°F), lows of 27°C (81°F). Warm, humid, with occasional rain.
• Dallas: Highs of 37°C (99°F), lows of 27°C (81°F). Extremely hot with minimal rainfall.
• Orlando: Highs of 33°C (91°F), lows of 25°C (77°F). Hot with frequent, brief showers.
• Impact: High humidity will make temperatures feel hotter (upper 90s heat index). Stay hydrated and schedule outdoor activities for early morning or evening. Watch for flash flood warnings, especially in the Gulf Coast and Appalachians.

West

• Los Angeles: Highs of 31°C (88°F), lows of 20°C (68°F). Warm, dry, and sunny, but with elevated wildfire risks.
• Seattle: Highs in the mid-20s°C (mid-70s°F), cooler evenings. Mostly dry with occasional light showers.
• Impact: Ideal for outdoor plans, but stay vigilant for wildfire alerts in California and the Rockies. Smoke may affect air quality in surrounding areas.

Alaska

• Juneau: Highs of 14°C (57°F), lows of 6°C (43°F). Cool with 7 rainy days, totaling 5.4 inches of precipitation.
• Ketchikan: Highs of 17°C (63°F), lows of 11°C (52°F). Mild with frequent rain.
• Impact: Dress in layers and bring waterproof gear for outdoor activities like cruises or sightseeing.

Key Weather Factors

• Wind: Average speeds of 18 km/h (11 mph), with stronger gusts possible along coasts, especially if Tropical Storm Erin impacts the Southeast or Northeast.
• UV Levels: Moderate to high UV index, so use sunscreen and protective clothing for outdoor activities.
• Tropical Storm Erin: Moving west at 21 mph with 45 mph winds, Erin may intensify into a major hurricane but is expected to stay offshore. Coastal residents should monitor updates for potential rain or wind.
• Wildfire Risk: High in the West, particularly California, Arizona, and the Rockies, due to dry conditions and possible lightning. Smoke may drift to the Midwest and Northeast, affecting air quality.

Practical Tips for August 19

1. Travel: Expect potential flight delays in the Midwest and Southeast due to storms. Check airline updates and use apps like Weather Underground for real-time forecasts.
2. Outdoor Activities: The West and parts of the Northeast offer great conditions for outdoor plans, but the South and Midwest require rain contingency plans. Avoid midday heat in southern cities.
3. Safety: Stay hydrated in high-humidity areas like Houston and Miami. In wildfire-prone regions, follow local fire advisories and monitor air quality.
4. Flood Preparedness: Residents in the Southeast, Ohio Valley, and Appalachians should stay alert for flash flooding risks. Keep emergency kits ready and avoid low-lying areas during heavy rain.
5. Stay Updated: For precise, city-specific forecasts, visit www.weather.gov or check local news for real-time updates closer to August 19.

Final Thoughts

On August 19, 2025, the U.S. will see diverse weather patterns, from sunny and warm conditions in the West to wet and stormy weather in the Southeast and Midwest. Whether you’re navigating daily commutes or planning a trip, understanding these conditions will help you stay prepared. Keep checking Click USA News for the latest weather updates and insights to make the most of your day!

For real-time weather updates, visit www.weather.gov or follow Click USA News for breaking news and forecasts.