Severe thunderstorms are expected to smack 12 states in the Midwest and South over the weekend, with some tornadoes possible.

Heavy, gusty and locally severe thunderstorms are likely to stretch from Maryland and Delaware to northern Florida Sunday.

With massive job cuts, the National Weather Service is eliminating or reducing vital weather balloon launches in eight ...

Night - Scattered showers with a 75% chance of precipitation. Winds from S to SSE at 6 to 7 mph (9.7 to 11.3 kph). The overnight low will be 51 °F (10.6 °C). Cloudy with a high of 59 °F (15 °C ...

(CNN) — High temperatures affect public health across wide swaths of the United States each summer, causing spikes in emergency room visits and hundreds of heat-related deaths. As temperatures rise, ...

Night - Mostly clear. Winds variable at 7 mph (11.3 kph). The overnight low will be 64 °F (17.8 °C). Mostly sunny with a high of 88 °F (31.1 °C). Winds variable at 6 to 9 mph (9.7 to 14.5 kph ...

In South Carolina, an air quality alert is in effect until noon Thursday for the towns and cities of Mountain Rest, Rocky ...

Code yellow and code orange air quality days expected from smoke creating bad air quality at times through Saturday in the ...

CNN is tracking extreme heat conditions for Americans each day. See where the risks are greatest — and where high temperature records might be broken.

A National Weather Service forecast has a 40% chance of snow Tuesday and 30% chance of snow Wednesday for the Lower Hudson Valley. An NWS-issued weather map for the region shows potential for less ...

The National Oceanic and Atmospheric Administration predicted a much stronger northern lights display than usual Saturday ...