Compare old:new forecasts

The National Weather Service is in the process of changing over the forecast system to a new method, known as API (Application Programming Interface). In the mean time both are available and sometimes the new one (API) comes up with errors. So this is a side-by-side comparison of the two methods.

https://www.halethorpeweather.com/advforecast2-V4.05.php?inc=y&z=0 output

https://www.halethorpeweather.com/advforecast2-V5.20.php?inc=y&z=0 output

National Weather Service Forecast for: Halethorpe MD
Issued by: National Weather Service Baltimore, MD/Washington, D.C.

Updated: 10:54 am EDT Apr 20, 2026

Halethorpe, MD

This Afternoon High: 55 °F	Tonight Low: 32 °F	Tuesday High: 60 °F	Tuesday Night Low: 48 °F	Wednesday High: 72 °F	Wednesday Night Low: 51 °F	Thursday High: 76 °F	Thursday Night Low: 53 °F	Friday High: 77 °F
Scattered Sprinkles	Mostly Clear then Frost	Frost then Sunny	Partly Cloudy then Chance Showers	Showers Likely	Showers Likely then Mostly Clear	Sunny	Mostly Clear	Mostly Sunny

Freeze Warning
Hazardous Weather Outlook

This Afternoon	Scattered sprinkles. Partly sunny, with a high near 55. Northwest wind around 16 mph, with gusts as high as 28 mph.
Tonight	Widespread frost after 2am. Otherwise, mostly clear, with a low around 32. North wind 3 to 8 mph.
Tuesday	Widespread frost before 10am. Otherwise, sunny, with a high near 60. Calm wind becoming south around 6 mph in the afternoon.
Tuesday Night	A chance of showers after 2am. Increasing clouds, with a low around 48. Southeast wind around 7 mph. Chance of precipitation is 30%.
Wednesday	Showers likely, mainly after 2pm. Mostly cloudy, with a high near 72. Southwest wind 5 to 7 mph. Chance of precipitation is 60%.
Wednesday Night	Showers likely before 8pm. Partly cloudy, with a low around 51. Chance of precipitation is 60%.
Thursday	Sunny, with a high near 76.
Thursday Night	Mostly clear, with a low around 53.
Friday	Mostly sunny, with a high near 77.
Friday Night	A chance of showers after 8pm. Partly cloudy, with a low around 55. Chance of precipitation is 30%.
Saturday	Showers likely. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.
Saturday Night	Showers likely. Mostly cloudy, with a low around 51. Chance of precipitation is 70%.
Sunday	A chance of showers. Mostly cloudy, with a high near 66. Chance of precipitation is 50%.

Forecast from NOAA-NWS for Halethorpe MD.

National Weather Service Forecast for: Arbutus, MD
Issued by: National Weather Service Baltimore/Washington

Updated: Mon, 20-Apr-2026 10:54am EDT

Halethorpe, MD

Today Scattered Rain Showers	Tuesday Widespread Frost then Sunny	Wednesday Rain Showers Likely	Thursday Sunny	Friday Mostly Sunny then Slight Chance Showers And T-Storms	Saturday Rain Showers Likely	Sunday Chance Rain Showers
Hi 55 °F	Hi 60 °F	Hi 72 °F	Hi 76 °F	Hi 77 °F	Hi 65 °F	Hi 66 °F

Tonight Mostly Clear then Widespread Frost	Tuesday Night Partly Cloudy then Chance Rain Showers	Wednesday Night Rain Showers Likely then Mostly Clear	Thursday Night Mostly Clear	Friday Night Chance Showers And T-Storms	Saturday Night Rain Showers Likely	Sunday Night Chance Rain Showers
Lo 32 °F	Lo 48 °F	Lo 51 °F	Lo 53 °F	Lo 55 °F	Lo 51 °F	Lo 49 °F

Freeze Warning

Today	Scattered rain showers. Partly sunny, with a high near 55. Northwest wind 12 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Tonight	Widespread frost after 2am. Mostly clear, with a low around 32. North wind 2 to 13 mph, with gusts as high as 22 mph.
Tuesday	Widespread frost before 10am. Sunny, with a high near 60. Southeast wind 1 to 6 mph.
Tuesday Night	A chance of rain showers after 2am. Partly cloudy, with a low around 48. South wind around 7 mph. Chance of precipitation is 30%.
Wednesday	Rain showers likely. Mostly cloudy, with a high near 72. West wind around 7 mph. Chance of precipitation is 60%.
Wednesday Night	Rain showers likely before 8pm. Mostly clear, with a low around 51. Chance of precipitation is 60%.
Thursday	Sunny, with a high near 76.
Thursday Night	Mostly clear, with a low around 53.
Friday	A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 77.
Friday Night	A chance of showers and thunderstorms. Partly cloudy, with a low around 55. Chance of precipitation is 30%.
Saturday	Rain showers likely. Partly sunny, with a high near 65. Chance of precipitation is 60%.
Saturday Night	Rain showers likely. Mostly cloudy, with a low around 51. Chance of precipitation is 70%.
Sunday	A chance of rain showers. Mostly cloudy, with a high near 66. Chance of precipitation is 50%.
Sunday Night	A chance of rain showers. Mostly cloudy, with a low around 49.

Forecast from NOAA-NWS for Arbutus, MD.