Frost Advisory
Starts in 4 h 29 min
When
From 10 PM this evening to 9 AM EDT Sunday.
Where
In Delaware, Kent and New Castle Counties. In Maryland, Caroline, Kent MD, and Queen Annes Counties. In Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, and Philadelphia Counties.
Issued for this forecast zone · National Weather Service Mount Holly NJ
What, impacts and precautionsHide details
What
Temperatures as low as 33 degrees will result in frost formation.
Impacts
Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Precautionary actions
Take steps now to protect tender plants from the cold.
Areas: New Castle; Kent; Kent; Queen Anne's; Caroline; Delaware; Philadelphia; Eastern Chester; Eastern Montgomery; Lower Bucks
See it on weather.gov (opens in a new tab)

Observed 4:53 PM EDT at KDMH

Tolchester, MD weather

Sunny and 62°17°, jacket by 7 PM.

Forecasts agree

Now 62°17°

Sunny

Wind: 5 mph8 km/h; From the northeast. Up to 5 mph8 km/h through 5 AM
Dew point: 39°4°; Comfortable
UV tomorrow: 4Moderate; Moderate 11 AM–5 PM · peak 4
Air quality: 35Good; Ozone · tomorrow moderate
Pressure: 30.53 inHg1034 hPa; Falling slowly · −0.02 inHg−0.6 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

About the same as this time yesterday (63°17° then, 62°17° now)

Good hours for

Below 50°10° tonight after 9 PM
Low 42°6° tomorrow at 6 AM
Above 50°10° tomorrow by 10 AM
High 63°17° tomorrow at 3 PM

TonightDown to 43°6° by 4 AM · Clear
Tomorrow morningUp to 57°14° by 11 AM · Clear
Tomorrow afternoonUp to 63°17° by 3 PM · Clear
Tomorrow nightDown to 46°8° by 3 AM · Clear
Monday morningUp to 58°14° by 11 AM · Clear
Monday afternoonUp to 68°20° by 4 PM · Clear

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 5p	Sunny	61°16° (likely 59°15° to 61°16°)	61°16°	0%	5 mph8 km/h from NE, gusts 5 mph9 km/h	50%	4%	1
Sat 6p	Clear	59°15° (likely 56°13° to 59°15°)	59°15°	0%	0 mph0 km/h, gusts 6 mph9 km/h	53%	0%	0
Sat 7p	Clear	55°13° (likely 52°11° to 56°13°)	55°13°	0%	5 mph8 km/h from E, gusts 8 mph12 km/h	59%	0%	0
Sat 8p	Clear	50°10° (likely 49°9° to 54°12°)	49°9°	0%	5 mph8 km/h from E, gusts 7 mph12 km/h	74%	0%	0
Sat 9p	Clear	49°9° (likely 47°8° to 52°11°)	49°9°	0%	0 mph0 km/h, gusts 9 mph14 km/h	77%	0%	0
Sat 10p	Clear	47°8° (likely 46°8° to 51°11°)	47°8°	0%	0 mph0 km/h, gusts 8 mph12 km/h	83%	0%	0
Sat 11p	Clear	46°8° (likely 45°7° to 50°10°)	46°8°	0%	0 mph0 km/h, gusts 8 mph12 km/h	89%	0%	0
Sun 12a	Clear	45°7° (likely 44°7° to 49°9°)	45°7°	0%	0 mph0 km/h, gusts 8 mph12 km/h	93%	0%	0
Sun 1a	Clear	45°7° (likely 43°6° to 49°9°)	45°7°	0%	0 mph0 km/h, gusts 5 mph9 km/h	93%	0%	0
Sun 2a	Clear	44°7° (likely 42°6° to 48°9°)	44°7°	0%	0 mph0 km/h, gusts 5 mph8 km/h	96%	0%	0
Sun 3a	Clear	44°7° (likely 41°5° to 47°8°)	44°7°	0%	0 mph0 km/h, gusts 5 mph8 km/h	93%	1%	0
Sun 4a	Clear	43°6° (likely 41°5° to 47°8°)	43°6°	0%	0 mph0 km/h, gusts 6 mph10 km/h	96%	1%	0
Sun 5a	Clear	43°6° (likely 41°5° to 47°8°)	41°5°	0%	5 mph8 km/h from NE, gusts 6 mph9 km/h	96%	6%	0
Sun 6a	Clear	42°6° (likely 40°4° to 46°8°)	40°4°	0%	5 mph8 km/h from NE, gusts 5 mph9 km/h	100%	1%	0
Sun 7a	Sunny	42°6° (likely 40°4° to 46°8°)	40°4°	0%	5 mph8 km/h from NE, gusts 6 mph10 km/h	100%	2%	0
Sun 8a	Sunny	44°7° (likely 42°6° to 46°8°)	42°6°	0%	5 mph8 km/h from NE, gusts 7 mph11 km/h	93%	2%	0
Sun 9a	Sunny	49°9° (likely 46°8° to 49°9°)	48°9°	0%	5 mph8 km/h from NE, gusts 7 mph11 km/h	83%	2%	1
Sun 10a	Sunny	54°12° (likely 53°12° to 54°12°)	54°12°	0%	5 mph8 km/h from NE, gusts 6 mph10 km/h	71%	4%	2
Sun 11a	Sunny	57°14° (likely 57°14° to 59°15°)	57°14°	0%	5 mph8 km/h from NE, gusts 4 mph7 km/h	64%	2%	3
Sun 12p	Sunny	59°15° (likely 58°14° to 62°17°)	59°15°	0%	5 mph8 km/h from N, gusts 4 mph6 km/h	57%	2%	4
Sun 1p	Sunny	61°16° (likely 59°15° to 63°17°)	61°16°	0%	5 mph8 km/h from N, gusts 4 mph7 km/h	53%	2%	4
Sun 2p	Sunny	62°17° (likely 60°16° to 63°17°)	62°17°	0%	0 mph0 km/h, gusts 5 mph8 km/h	52%	3%	4
Sun 3p	Sunny	63°17° (likely 61°16° to 64°18°)	63°17°	0%	0 mph0 km/h, gusts 5 mph8 km/h	50%	3%	4
Sun 4p	Sunny	63°17° (likely 61°16° to 64°18°)	63°17°	0%	0 mph0 km/h, gusts 5 mph8 km/h	48%	1%	3
Sun 5p	Sunny	63°17° (likely 61°16° to 63°17°)	63°17°	0%	0 mph0 km/h, gusts 4 mph6 km/h	50%	0%	1
Sun 6p	Clear	60°16° (likely 58°14° to 60°16°)	60°16°	0%	0 mph0 km/h, gusts 4 mph6 km/h	55%	0%	0
Sun 7p	Clear	56°13° (likely 54°12° to 57°14°)	56°13°	0%	0 mph0 km/h, gusts 4 mph7 km/h	62%	0%	0
Sun 8p	Clear	52°11° (likely 52°11° to 55°13°)	52°11°	0%	0 mph0 km/h, gusts 4 mph7 km/h	71%	0%	0
Sun 9p	Clear	50°10° (likely 50°10° to 54°12°)	50°10°	0%	0 mph0 km/h, gusts 4 mph6 km/h	77%	0%	0
Sun 10p	Clear	49°9° (likely 47°8° to 53°12°)	49°9°	0%	0 mph0 km/h, gusts 5 mph7 km/h	83%	0%	0
Sun 11p	Clear	49°9° (likely 45°7° to 51°11°)	49°9°	0%	0 mph0 km/h, gusts 8 mph13 km/h	83%	0%	0
Mon 12a	Clear	49°9° (likely 46°8° to 51°11°)	49°9°	0%	0 mph0 km/h, gusts 8 mph12 km/h	83%	1%	0
Mon 1a	Clear	47°8° (likely 45°7° to 50°10°)	47°8°	0%	0 mph0 km/h, gusts 5 mph9 km/h	89%	1%	0
Mon 2a	Clear	47°8° (likely 46°8° to 50°10°)	47°8°	0%	0 mph0 km/h, gusts 4 mph7 km/h	93%	1%	0
Mon 3a	Clear	46°8° (likely 45°7° to 50°10°)	46°8°	0%	0 mph0 km/h, gusts 5 mph8 km/h	96%	3%	0
Mon 4a	Clear	46°8° (likely 45°7° to 50°10°)	46°8°	0%	0 mph0 km/h, gusts 5 mph8 km/h	100%	39%	0
Mon 5a	Mostly clear	46°8° (likely 46°8° to 50°10°)	46°8°	0%	0 mph0 km/h, gusts 7 mph11 km/h	100%	20%	0
Mon 6a	Clear	46°8° (likely 46°8° to 49°9°)	46°8°	0%	0 mph0 km/h, gusts 7 mph11 km/h	100%	4%	0
Mon 7a	Sunny	46°8° (likely 46°8° to 49°9°)	46°8°	0%	0 mph0 km/h, gusts 7 mph11 km/h	100%	3%	0
Mon 8a	Sunny	46°8° (likely 46°8° to 48°9°)	46°8°	0%	0 mph0 km/h, gusts 6 mph10 km/h	96%	3%	0
Mon 9a	Sunny	52°11° (likely 49°9° to 53°12°)	52°11°	0%	5 mph8 km/h from W, gusts 7 mph11 km/h	83%	3%	1
Mon 10a	Sunny	56°13° (likely 55°13° to 56°13°)	56°13°	0%	5 mph8 km/h from W, gusts 9 mph14 km/h	74%	7%	2
Mon 11a	Sunny	58°14° (likely 58°14° to 59°15°)	58°14°	0%	5 mph8 km/h from W, gusts 10 mph15 km/h	75%	3%	3
Mon 12p	Sunny	60°16° (likely 60°16° to 62°17°)	60°16°	0%	5 mph8 km/h from W, gusts 9 mph15 km/h	67%	0%	4
Mon 1p	Sunny	63°17° (likely 62°17° to 64°18°)	63°17°	0%	5 mph8 km/h from W, gusts 9 mph15 km/h	60%	0%	4
Mon 2p	Sunny	65°18° (likely 64°18° to 65°18°)	65°18°	0%	5 mph8 km/h from W, gusts 9 mph15 km/h	58%	0%	4
Mon 3p	Sunny	67°19° (likely 65°18° to 67°19°)	67°19°	0%	5 mph8 km/h from W, gusts 11 mph18 km/h	54%	0%	4
Mon 4p	Sunny	68°20° (likely 66°19° to 68°20°)	68°20°	0%	5 mph8 km/h from W, gusts 11 mph17 km/h	55%	2%	3

Days ahead

Tap a day for its hours and the official wording.

Today, Oct 24. Mostly sunny. High 62°17°, low 42°6°. Dry. Forecasts agree.
1. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
2. Overnight
  midnight–6 AM
  Clear, 43°6°
  Dry
Official NWS forecast
Today: Sunny, with a high near 62. Northeast wind around 5 mph.
Tonight: Clear, with a low around 42. East wind 0 to 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
60°16°–62°17°
Low, likely
39°4°–42°6°
Wind
8 mph13 km/h, gusts 14 mph22 km/h
UV peak
4
Tomorrow, Oct 25. Sunny. High 64°18°, low 46°8°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 46°8°
  Dry
Official NWS forecast
Day: Sunny, with a high near 64. North wind 0 to 5 mph.
Night: Mostly clear, with a low around 46. West wind around 0 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–64°18°
Low, likely
40°4°–46°8°
Wind
7 mph10 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 68°20°, low 52°11°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 53°11°
  Dry
Official NWS forecast
Day: Sunny, with a high near 68. West wind 0 to 5 mph.
Night: Clear, with a low around 52.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
65°18°–68°20°
Low, likely
45°7°–52°11°
Wind
8 mph12 km/h, gusts 15 mph23 km/h
UV peak
4
Tuesday, Oct 27. Sunny. High 67°19°, low 47°8°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 47°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 67.
Night: Mostly clear, with a low around 47.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–67°19°
Low, likely
47°8°–52°11°
Wind
12 mph20 km/h, gusts 23 mph37 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 65°18°, low 50°10°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 50°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 65.
Night: Mostly cloudy, with a low around 50.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–65°18°
Low, likely
43°6°–50°10°
Wind
12 mph19 km/h, gusts 17 mph27 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 68°20°, low 54°12°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 49°10°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 54°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 68.
Night: Mostly clear, with a low around 54.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–68°20°
Low, likely
48°9°–54°12°
Wind
9 mph14 km/h, gusts 25 mph41 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 71°22°, low 54°12°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 53°12°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 54°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 71.
Night: Mostly clear, with a low around 54.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
68°20°–72°22°
Low, likely
51°11°–54°12°
Wind
8 mph13 km/h, gusts 28 mph45 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 66°19°, low 51°11°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 69°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 59°15°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 53°12°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
64°18°–68°20°
Low, likely
49°9°–54°12°
Wind
9 mph14 km/h, gusts 28 mph46 km/h
UV peak
4
Sunday, Nov 1. Drizzle. High 68°20°, low 53°12°. Rain 0.02 in0.5 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 54°12°
  Dry
2. Afternoon
  noon–6 PM
  Drizzle, 68°20°
  20% chance
3. Evening
  6 PM–midnight
  Drizzle, 63°17°
  30% chance · 0.06 in1.5 mm
4. Overnight
  midnight–6 AM
  Drizzle, 62°17°
  30% chance · 0.08 in2.1 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–71°22°
Low, likely
47°8°–57°14°
Wind
16 mph25 km/h, gusts 24 mph39 km/h
UV peak
2
Monday, Nov 2. Showers. High 69°21°, low 61°16°. Rain 0.24 in6.1 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Showers, 64°18°
  30% chance · 0.1 in2.4 mm
2. Afternoon
  noon–6 PM
  Drizzle, 69°21°
  20% chance · 0.03 in0.6 mm
3. Evening
  6 PM–midnight
  Drizzle, 66°19°
  20% chance · 0.05 in1.2 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
65°18°–73°23°
Low, likely
59°15°–67°19°
Wind
24 mph39 km/h, gusts 38 mph61 km/h

10 days15 days30 days

The outlook

Today
Dry, high 62°, low 42°.
Tomorrow
Dry, high 64°, low 46°.
Monday
Dry, high 68°, low 52°, warming up.
Rest of week
Mostly dry, highs 65–71°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (PHI) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Northwest Branch Patapsco River at Baltimore/Fort McHenry (IN MLLW)

19 mi

Action stage

Level: 2.7 ft

Forecast peak 2.9 ft Sat 6 PM, action stage

Reading from Sat 4:36 PM · NWS gauge page

Chesapeake Bay at Tolchester Beach (IN MLLW)

0.8 mi

Below flood stage

Level: 2.7 ft

Forecast peak 3.1 ft Sat 6 PM

Reading from Sat 4:30 PM · NWS gauge page

Back River Tributary at Rocky Point Park, MD

9.5 mi

Level: 0.7 ft

Reading from Sat 4:06 PM · NWS gauge page

Foster Branch near Joppatowne

14 mi

Below flood stage

Level: 1.8 ft
Flow: under 1 cfs

Reading from Sat 4:05 PM · NWS gauge page

Sun & moon

Sun

Daylight: 10 h 49 min; Losing 2 min 25 s a day; shortest Dec 21, 1 h 25 min less
Golden hour: 5:36–6:30 PM; Morning 7:07–8:01 AM
Blue hour: 6:30–6:40 PM; Morning 6:56–7:07 AM; first light 6:56 AM

Stars tonight? Fair

Clear 6:40 PM–6:57 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 5:36 AM · rises 5:10 PM
Full moon: Oct 26
New moon: Nov 9

Looking west from Tolchester. The highest point on the skyline is about 2,400 ft, 16 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

1 active weather alert

Frost Advisory