🔥 Trending Tomorrow's Weather Forecast: Heavy Rain and Strong Winds Expected

Tomorrow, August 21, 2026, various weather conditions are expected across different regions, with a general trend of showers, thunderstorms, and moderate temperatures.

United States Weather Overview

Northeast and Mid-Atlantic

The Mid-Atlantic coast, including areas like New York, is expected to experience showers and possibly thunderstorms. In New York City, there's a chance of showers and thunderstorms after 2 PM, with a high near 79°F. North winds around 6 mph will become southeast in the afternoon ². Some forecasts indicate showers and possibly a thunderstorm before 11 PM, with a slight chance of showers between 11 PM and 2 AM, and a low around 70°F with northeast winds of 5 to 7 mph ⁴. Patchy fog is also possible, with lows in the mid-60s and north winds around 5 mph ¹.

Midwest and Ohio Valley

Heavy rain and flash flooding threats are expected to continue across the Midwest and Ohio Valley ⁵.

Southern Arizona

Southern Arizona is also facing threats of heavy rain and flash flooding ⁵.

Detailed Forecast by Region

New York City, NY

• Daytime: A chance of showers, then showers and possibly a thunderstorm after 2 PM. High near 79°F. North wind around 6 mph becoming southeast in the afternoon ².
• Nighttime: Showers and possibly a thunderstorm before 11 PM, then a slight chance of showers between 11 PM and 2 AM. Low around 70°F. Northeast wind 5 to 7 mph ⁴. Partly cloudy with numerous showers and scattered thunderstorms in the evening, then mostly cloudy after midnight. Patchy fog. Some thunderstorms may produce gusty winds and heavy rainfall in the evening. Lows in the mid-60s. North winds around 5 mph ¹.

General Conditions

The National Weather Service (NWS) provides quantitative precipitation forecasts and maps showing highs, lows, fronts, troughs, and expected weather across North America ³. The Weather Prediction Center (WPC) also issues short-range forecast discussions that highlight areas of heavy rain and flash flooding ⁵.

For specific hourly forecasts, precipitation timing, and recommendations on what to wear, resources like Weather Tomorrow, which uses NOAA data, can be consulted by city or ZIP code ⁶. The Storm Prediction Center (SPC) provides outlooks for severe weather, including tornadoes and severe thunderstorms ⁷.