On July 7, 2015, NWS implemented changes to the icons depicted on all of its point-forecast pages. Changes include new icon images with increased clarity, 6-hour increments for rapidly changing weather and new color blocks to highlight forecast hazards.

A page depicting all of the new icon images can be accessed here: www.weather.gov/forecast-icons

Changes to the icons were based on analysis of 6,700 public comments collected in 2014. Also, many of these changes are based on the results of a research project led by the National Center for Atmospheric Research.

Users are encouraged to continue to provide comments regarding these changes via email at icons@noaa.gov. NWS will continue to analyze incoming feedback and refine the icons as necessary. Any substantial change to the icons will be facilitated through the NWS public comment/review process.

Heat Wave in Central U.S.

Dangerous heat will continue in the Nation's mid-section on Tuesday. Combined with high humidity, this will lead to Heat Index temperatures ranging from 100 to 110 degrees Fahrenheit across parts of the Plains and mid-South. Heat Advisories and Excessive Heat Warnings are in effect. If you must be outside, slow down and drink plenty of water.
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Hazardous Weather Conditions

Current conditions at

Johnstown, Johnstown-Cambria County Airport (KJST)

Lat: 40.32°NLon: 78.83°WElev: 2283ft.

Fog/Mist

67°F

19°C

Humidity 93%
Wind Speed E 3 mph
Barometer 30.08 in (1016.8 mb)
Dewpoint 65°F (18°C)
Visibility 0.75 mi
Last update 28 Jul 3:54 am EDT

Detailed Forecast

Today
Mostly sunny. Very warm with highs in the lower 80s. East winds around 5 mph.
Tonight
Partly cloudy. Humid with lows in the mid 60s. Southeast winds around 5 mph.
Wednesday
Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Hot. Humid with highs in the mid 80s. South winds around 5 mph. Chance of rain 20 percent.
Wednesday Night
Partly cloudy in the evening...then mostly cloudy with a chance of showers and thunderstorms after midnight. Humid with lows in the upper 60s. Southwest winds around 5 mph. Chance of rain 30 percent.
Thursday
Showers and thunderstorms likely. Very warm. Humid with highs in the lower 80s. West winds 5 to 10 mph. Chance of rain 60 percent.
Thursday Night
Partly cloudy with a chance of showers and thunderstorms in the evening...then mostly clear after midnight. Lows around 60. Chance of rain 50 percent.
Friday
Sunny. Highs around 80.
Friday Night
Mostly clear. Lows around 60.
Saturday
Mostly sunny. Highs in the lower 80s.
Saturday Night
Mostly clear. Lows in the lower 60s.
Sunday
Mostly sunny. Highs in the lower 80s.
Sunday Night
Partly cloudy. Lows in the lower 60s.
Monday
Mostly sunny. Very warm with highs in the lower 80s.



  Click Map For Detailed Forecast
238 AM EDT TUE JUL 28 2015
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Graph

National Digital Forecast Database