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: 10:53 pm EDT Oct 5, 2026

Halethorpe, MD

Tonight Low: 46 °F	Tuesday High: 65 °F	Tuesday Night Low: 44 °F	Wednesday High: 73 °F	Wednesday Night Low: 56 °F	Thursday High: 79 °F	Thursday Night Low: 55 °F	Friday High: 74 °F	Friday Night Low: 54 °F
Clear	Sunny	Clear	Sunny	Mostly Clear	Sunny	Mostly Clear	Sunny	Mostly Clear

Tonight	Clear, with a low around 46. Northwest wind around 7 mph.
Tuesday	Sunny, with a high near 65. North wind 3 to 6 mph.
Tuesday Night	Clear, with a low around 44. Calm wind.
Wednesday	Sunny, with a high near 73. Light southwest wind becoming south 5 to 9 mph in the morning.
Wednesday Night	Mostly clear, with a low around 56. South wind 3 to 6 mph.
Thursday	Sunny, with a high near 79.
Thursday Night	Mostly clear, with a low around 55.
Friday	Sunny, with a high near 74.
Friday Night	Mostly clear, with a low around 54.
Saturday	Mostly sunny, with a high near 71.
Saturday Night	Partly cloudy, with a low around 54.
Sunday	A slight chance of showers. Partly sunny, with a high near 70. Chance of precipitation is 20%.
Sunday Night	A chance of showers. Mostly cloudy, with a low around 57. Chance of precipitation is 30%.
Columbus Day	A chance of showers. Partly sunny, with a high near 72. Chance of precipitation is 30%.

Forecast from NOAA-NWS for Halethorpe MD.

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

Updated: Mon, 05-Oct-2026 7:53pm EDT

Halethorpe, MD

	Tuesday Sunny	Wednesday Sunny	Thursday Sunny	Friday Sunny	Saturday Mostly Sunny	Sunday Partly Sunny then Slight Chance Rain Showers	Columbus Day Chance Rain Showers
	Hi 65 °F	Hi 73 °F	Hi 79 °F	Hi 74 °F	Hi 71 °F	Hi 70 °F	Hi 72 °F

Tonight Clear	Tuesday Night Clear	Wednesday Night Mostly Clear	Thursday Night Mostly Clear	Friday Night Mostly Clear	Saturday Night Partly Cloudy	Sunday Night Chance Rain Showers
Lo 46 °F	Lo 44 °F	Lo 56 °F	Lo 55 °F	Lo 54 °F	Lo 54 °F	Lo 57 °F

Tonight	Clear, with a low around 46. Northwest wind around 7 mph.
Tuesday	Sunny, with a high near 65. Northwest wind 2 to 6 mph.
Tuesday Night	Clear, with a low around 44. Southwest wind around 2 mph.
Wednesday	Sunny, with a high near 73. Southwest wind 2 to 9 mph.
Wednesday Night	Mostly clear, with a low around 56. Southwest wind 3 to 7 mph.
Thursday	Sunny, with a high near 79.
Thursday Night	Mostly clear, with a low around 55.
Friday	Sunny, with a high near 74.
Friday Night	Mostly clear, with a low around 54.
Saturday	Mostly sunny, with a high near 71.
Saturday Night	Partly cloudy, with a low around 54.
Sunday	A slight chance of rain showers after 2pm. Partly sunny, with a high near 70. Chance of precipitation is 20%.
Sunday Night	A chance of rain showers. Mostly cloudy, with a low around 57. Chance of precipitation is 30%.
Columbus Day	A chance of rain showers. Partly sunny, with a high near 72.

Forecast from NOAA-NWS for Arbutus, MD.