Weather for Marcus Hook, Pennsylvania
Current Weather
Five Day Weather Forecast
Fri
H: 44°F
L: 15°F
Sat
H: 17°F
L: 8°F
Sun
H: 27°F
L: 15°F
Mon
H: 32°F
L: 17°F
Tue
H: 20°F
L: 6°F
Air Quality
Nitrogen Dioxide: 7.85 μg/m3
Sulphur Dioxide: 7.15 μg/m3
Ozone: 73 μg/m3
Astronomical
Sun Transit: 12:13 AM
Sunset: 5:10 PM
Daylight: 9 hrs 54 mins
Moon Transit: 9:54 AM
Moonset: 10:31 PM
Moon Phase: Waxing Crescent
Moon Illumination: 24.4%
Best Times for Fishing or Hunting
Major Periods
9:24 AM - 11:54 AM9:24 AM - 11:54 AM
Minor Periods
10:01 PM - 11:31 PM9:13 AM - 10:43 AM
Action Rating: 2 out of 5
Winter Storm Watch issued January 22 at 1:45PM EST until January 26 at 1:00PM EST by NWS Mount Holly NJ
Effective: Thu January 22, 2026, 1:45 PM
Expires: Fri January 23, 2026, 6:00 AM
* WHAT...Heavy snow with sleet and freezing rain possible. Total snow accumulations between 11 and 15 inches and ice accumulations up to two tenths of an inch possible. * WHERE...Portions of Delaware, northeast Maryland, southern New Jersey, and southeast Pennsylvania. * WHEN...From Saturday evening through Monday afternoon. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning commute.
Monitor the latest forecasts for updates on this situation.
Winter Storm Watch issued January 23 at 1:27AM EST until January 26 at 1:00PM EST by NWS Mount Holly NJ
Effective: Fri January 23, 2026, 1:27 AM
Expires: Fri January 23, 2026, 2:30 PM
* WHAT...Heavy mixed precipitation possible. Total snow accumulations between 8 and 15 inches and ice accumulations up to one quarter of an inch possible. * WHERE...Portions of central, northern, and southern Delaware, northeast Maryland, southern New Jersey, and southeast Pennsylvania. * WHEN...From Saturday evening through Monday afternoon. * IMPACTS...Power outages and tree damage are possible due to the ice. Travel could be nearly impossible. The hazardous conditions could impact the Monday morning commute.
Monitor the latest forecasts for updates on this situation.
Cold Weather Advisory issued January 23 at 1:23AM EST until January 24 at 10:00AM EST by NWS Mount Holly NJ
Effective: Fri January 23, 2026, 1:23 AM
Expires: Fri January 23, 2026, 2:30 PM
* WHAT...Very cold wind chills as low as 7 below expected. * WHERE...Portions of central, northern, and southern Delaware, northeast Maryland, central, northern, and southern New Jersey, and southeast Pennsylvania. * WHEN...From midnight tonight to 10 AM EST Saturday. * IMPACTS...The cold wind chills as low as 5 below zero could result in hypothermia if precautions are not taken. Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures. Wind chill values can lead to hypothermia with prolonged exposure.
Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. Keep pets indoors as much as possible. If you do not have heat in your home or lack shelter, you can call 211 for assistance locating appropriate shelter from the cold.
Cold Weather Advisory issued January 23 at 1:23AM EST until January 24 at 10:00AM EST by NWS Mount Holly NJ
Effective: Fri January 23, 2026, 1:23 AM
Expires: Fri January 23, 2026, 2:30 PM
* WHAT...Very cold wind chills as low as 11 below expected. * WHERE...Portions of central, northern, and northwest New Jersey and east central and southeast Pennsylvania. * WHEN...From 10 PM this evening to 10 AM EST Saturday. * IMPACTS...The cold wind chills as low as 10 below zero could result in hypothermia if precautions are not taken. Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures. Wind chill values can lead to hypothermia with prolonged exposure.
Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. Keep pets indoors as much as possible. If you do not have heat in your home or lack shelter, you can call 211 for assistance locating appropriate shelter from the cold.
Winter Storm Watch issued January 22 at 1:45PM EST until January 26 at 1:00PM EST by NWS Mount Holly NJ
Effective: Thu January 22, 2026, 1:45 PM
Expires: Fri January 23, 2026, 6:00 AM
* WHAT...Heavy snow with mixed precipitation possible. Total snow accumulations between 12 and 16 inches and ice accumulations around one tenth of an inch possible. * WHERE...Portions of northern New Jersey and southeast Pennsylvania. * WHEN...From late Saturday night through Monday afternoon. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning commute.
Monitor the latest forecasts for updates on this situation.
Winter Storm Watch issued January 23 at 1:27AM EST until January 26 at 1:00PM EST by NWS Mount Holly NJ
Effective: Fri January 23, 2026, 1:27 AM
Expires: Fri January 23, 2026, 2:30 PM
* WHAT...Heavy snow with mixed precipitation possible. Total snow accumulations between 12 and 17 inches and ice accumulations around one tenth of an inch possible. * WHERE...Portions of central, northern, northwest, and southern New Jersey and east central, northeast, and southeast Pennsylvania. * WHEN...From late Saturday night through Monday afternoon. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning commute.
Monitor the latest forecasts for updates on this situation.
Weather Forecast
Air Quality
Nitrogen Dioxide: 13.33 μg/m3
Sulphur Dioxide: 7.04 μg/m3
Ozone: 58.08 μg/m3
Astronomical
Sun Transit: 12:13 AM
Sunset: 5:10 PM
Daylight: 9 hrs 54 mins
Moon Transit: 9:54 AM
Moonset: 10:31 PM
Moon Phase: Waxing Crescent
Moon Illumination: 24.4%
Best Times for Fishing or Hunting
Major Periods
9:24 AM - 11:54 AM9:24 AM - 11:54 AM
Minor Periods
10:01 PM - 11:31 PM9:13 AM - 10:43 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 6.36 μg/m3
Sulphur Dioxide: 4.02 μg/m3
Ozone: 62.92 μg/m3
Astronomical
Sun Transit: 12:13 AM
Sunset: 5:12 PM
Daylight: 9 hrs 56 mins
Moon Transit: 4:47 PM
Moonset: 11:40 PM
Moon Phase: First Quarter
Moon Illumination: 34.7%
Best Times for Fishing or Hunting
Major Periods
5:54 AM - 8:24 AM4:17 PM - 6:47 PM
Minor Periods
12:00 AM - 12:00 AM9:37 AM - 11:07 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 19.11 μg/m3
Sulphur Dioxide: 4.44 μg/m3
Ozone: 51.72 μg/m3
Astronomical
Sun Transit: 12:14 AM
Sunset: 5:13 PM
Daylight: 9 hrs 57 mins
Moon Transit: 5:36 PM
Moonset: 12:40 AM
Moon Phase: First Quarter
Moon Illumination: 45.8%
Best Times for Fishing or Hunting
Major Periods
6:42 AM - 9:12 AM5:06 PM - 7:36 PM
Minor Periods
10:03 AM - 11:33 AM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 19.84 μg/m3
Sulphur Dioxide: 4.22 μg/m3
Ozone: 52.32 μg/m3
Astronomical
Sun Transit: 12:14 AM
Sunset: 5:14 PM
Daylight: 9 hrs 59 mins
Moon Transit: 6:29 PM
Moonset: 12:54 AM
Moon Phase: First Quarter
Moon Illumination: 57.1%
Best Times for Fishing or Hunting
Major Periods
7:33 AM - 10:03 AM5:59 PM - 8:29 PM
Minor Periods
10:33 AM - 12:03 AM12:24 AM - 1:54 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 8.55 μg/m3
Sulphur Dioxide: 3.16 μg/m3
Ozone: 67.15 μg/m3
Astronomical
Sun Transit: 12:14 AM
Sunset: 5:15 PM
Daylight: 10 hrs 1 mins
Moon Transit: 7:27 PM
Moonset: 2:09 AM
Moon Phase: First Quarter
Moon Illumination: 68.0%
Best Times for Fishing or Hunting
Major Periods
8:30 AM - 11:00 AM6:57 PM - 9:27 PM
Minor Periods
11:10 AM - 12:40 AM1:39 AM - 3:09 AM
Action Rating: 2 out of 5