Tonight:
A chance of rain. Cloudy, with a low around 46. Southeast wind 10 to 15 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

Thursday:
Rain likely before 5pm, then a chance of rain and a slight chance of thunderstorms. Cloudy, with a high near 76. Southwest wind 10 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.

Thursday Night:
A chance of rain and a slight chance of thunderstorms before 8pm, then showers and thunderstorms. Cloudy, with a low around 55. West wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Friday:
Showers and thunderstorms before 2pm. Cloudy, with a high near 64. Northwest wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Friday Night:
Rain showers likely after 8pm. Cloudy, with a low around 50. Northeast wind 0 to 5 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.

Saturday:
Rain showers likely. Cloudy, with a high near 60. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.

Saturday Night:
Rain showers likely before 2am, then patchy fog and a slight chance of rain showers. Mostly cloudy, with a low around 53. Chance of precipitation is 70%.

Sunday:
A chance of rain showers and patchy fog before 2pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.

Extended Forecast

Sunday Night Showers And Thunderstorms	Monday Chance Rain Showers	Monday Night Mostly Cloudy	Tuesday Slight Chance Rain And Snow Showers	Tuesday Night Slight Chance Rain And Snow Showers then Mostly Clear	Wednesday Sunny
Lo 44 °F	Hi 57 °F	Lo 36 °F	Hi 50 °F	Lo 29 °F	Hi 51 °F
PoP 80%	PoP 40%

AREA FORECAST DISCUSSION
National Weather Service Mount Holly NJ
910 PM EDT Wed Apr 2 2025

Weather Synopsis:
High pressure over eastern Canada moves out to sea tonight. Meanwhile, strong low pressure over the Midwest lifts into the Great Lakes, and a warm front extending out from that low lifts north through the region tonight through Thursday morning. A cold front passes through Thursday night and then gets hung up over the area through the weekend. This front will oscillate back and forth as several waves of low pressure pass through the region. A stronger cold front passes through Sunday night, followed by another cold front Monday night. High pressure returns for the rest of next week.

Near Term:
THROUGH THURSDAY - Into the overnight, temps will remain on the mild side thanks to the abundance of cloud cover and the warm front that will surge northward after midnight. This will cause an increase in overall warm air and moisture advection, so lows in the 40s should occur mostly before or around midnight. We`ll likely see a lull in activity once this initial round moves out before midnight ahead of a second round of shower activity approaches late tonight into early Thursday morning. This second round will be in association with a remnant/decaying MCS tracking out of the Tennessee/Ohio Valley overnight. Fortunately, this MCS should be weakening as it approaches Thursday morning, so not expecting anything severe, however rumbles of thunder and heavy downpours may be possible.

For Thursday, an area of low pressure will track up into Quebec as a frontal boundary trails back to the southwest. With the warm front lifting up well into interior New England, our entire area will be settled well into the warm sector. Despite mostly cloudy to overcast skies, high temps will be mild in the upper 60s to upper 70s with a few spots approaching 80 degrees across the Delmarva. We`ll also have a very moist airmass in place, with dew points rising into the low to mid 60s, so it`ll feel a bit more like early summer than early spring. With the front approaching from the west in the afternoon (and into Thursday night) and the moist airmass in place, there is expected to be at least some shower/storm activity around in the afternoon. Best chances appear to be south of the I-78 corridor where there is more moisture available to tap into. In fact, a few of these storms may be strong to borderline severe, however there is quite a bit of uncertainty even now, as it is one of those low CAPE/high shear environments with limited to no sunshine. This lies with the general thinking by the Storm Prediction Center which has the majority of our forecast area in a MARGINAL Risk (Level 1/5) for severe weather on Thursday with only the western most portion of Berks County in a SLIGHT Risk (Level 2/5). Damaging wind gusts will be the main threat, but with the abundance of shear, an isolated tornado threat cannot be ruled out.

Short Term:
THURSDAY NIGHT THROUGH SATURDAY - The cold front works its way through the region Thursday night through Friday morning. Weak low pressure passes through the region along that front and departs by midday Friday. Showers and scattered thunderstorms develop Thursday evening and become more widespread through the overnight hours, ending Friday morning. With dew points in the 60s, there will be abundant low level moisture over the area for locally heavy rain to develop. There is a lack of forcing and instability due to lack of daytime heating since it will be at night, so the severe threat will be minimal. But there still could be some thunderstorms. SPC has a Marginal Risk (1 out of 5) for severe weather during this time.

Conditions dry out Friday afternoon and a cooler and drier air mass builds down into the region. Surface dew points drop into the 40s and 50s Friday afternoon and night. Highs will generally be in the low to mid 60s, though it will be warmer in Delmarva, as it should be south of the cold front.

Low pressure approaches from the west and passes north of New York State Friday night through Saturday. This will pull the frontal boundary back north as a warm front. Another round of showers will develop Friday night and continue into Saturday morning. Onshore flow will keep the area cloudy. Uncertain as to how far north the warm front will get, so it will be uncertain as to how warm the entire area will get. Based on latest guidance, it should get into the 70s in Delmarva, in the low to mid 60s south of the I-195 corridor, and in the mid and upper 50s in the southern Poconos, northern New Jersey, and the Lehigh Valley. Though those temperatures will be highly dependent on how far north the front gets.

Another low pressure system approaches from the west, and another round of showers is possible A few showers or an isolated thunderstorm will be possible early this evening in association with the thunderstorm activity currently over western PA that will track toward the northern third of our area.late Saturday afternoon.

Long Term:
SATURDAY NIGHT THROUGH WEDNESDAY - Unsettled conditions on tap through the weekend as a frontal boundary will remain over the area and several waves of low pressure will ride along this boundary.

As one wave of low pressure passes north of the region Saturday night, it will pull a warm front through the Northeast and Mid- Atlantic. The region will then be in the warm sector on Sunday. Rain lifts from south to north and tapers off late Saturday night, and then patchy fog develops late Saturday night as southerly winds usher low level moisture in to the region and surface dew points rise well into the 50s. Quite warm and humid for the start of April on Sunday with highs well in the 70s and even low 80s in Delmarva with dew points in the 50s and low 60s.

A deep upper trough will dig through the central U.S. and low pressure will develop at the base of the trough over the Southeast and Mid-Atlantic, and this low lifts north through the region Sunday night. As it departs, the front over the area will move through as a cold front late Sunday night through Monday morning. Showers and isolated thunderstorms develop Sunday afternoon and persist through the night, tapering off from west to east Monday morning. Based on the setup, which includes an airmass with 60 or so degree dew points ahead of the front and 30 to 40 degree dew points behind it, there is the potential for severe weather, but there will be a lack of heating with the frontal passage occurring at night, so instability may be limited.

Turning much cooler and dryer on Monday. Another cold front passes through Monday night through Tuesday morning, resulting in a reinforcing shot of colder and drier air into the region for Tuesday and Wednesday. There may even be some rain and/or snow showers with the passage of this front on Tuesday. High pressure builds in from the west for the mid-week period.

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