Frost Advisory
Starts in 4 h 38 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 3:54 PM EDT at KNAK

Chester, MD weather

Mostly sunny and 60°16°, jacket by 7 PM.

Forecasts agree

Now 60°16°

Mostly sunny

Wind: Calm; Up to 5 mph8 km/h through 5 AM
Dew point: 41°5°; Comfortable
UV tomorrow: 4Moderate; Moderate 11 AM–5 PM · peak 4
Air quality: 35Good; Ozone · tomorrow moderate
Pressure: 30.53 inHg1034 hPa; Falling slowly · −0.03 inHg−1.0 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Low 45°7° tonight at 5 AM
Above 50°10° tomorrow by 9 AM
High 64°18° tomorrow at 3 PM
Below 60°16° tomorrow night after 6 PM

TonightDown to 45°7° by 5 AM · Clear
Tomorrow morningUp to 58°14° by 11 AM · Clear
Tomorrow afternoonUp to 64°18° by 3 PM · Clear
Tomorrow nightDown to 47°8° by 4 AM · Clear
Monday morningUp to 59°15° by 11 AM · Clear
Monday afternoonUp to 67°19° by 3 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	Mostly sunny	61°16° (likely 60°16° to 61°16°)	61°16°	0%	5 mph8 km/h from N, gusts 7 mph11 km/h	51%	30%	0
Sat 6p	Mostly clear	58°14° (likely 56°13° to 59°15°)	58°14°	0%	5 mph8 km/h from NE, gusts 7 mph11 km/h	60%	30%	0
Sat 7p	Mostly clear	55°13° (likely 53°12° to 57°14°)	55°13°	0%	5 mph8 km/h from E, gusts 8 mph12 km/h	64%	19%	0
Sat 8p	Clear	52°11° (likely 51°11° to 56°13°)	52°11°	0%	5 mph8 km/h from E, gusts 9 mph15 km/h	74%	7%	0
Sat 9p	Clear	51°11° (likely 49°9° to 55°13°)	51°11°	0%	5 mph8 km/h from E, gusts 11 mph17 km/h	80%	1%	0
Sat 10p	Clear	49°9° (likely 48°9° to 54°12°)	48°9°	0%	5 mph8 km/h from E, gusts 9 mph15 km/h	86%	0%	0
Sat 11p	Clear	48°9° (likely 47°8° to 53°12°)	48°9°	0%	0 mph0 km/h, gusts 8 mph13 km/h	89%	0%	0
Sun 12a	Clear	47°8° (likely 47°8° to 52°11°)	47°8°	0%	0 mph0 km/h, gusts 7 mph11 km/h	93%	0%	0
Sun 1a	Clear	47°8° (likely 45°7° to 52°11°)	47°8°	0%	0 mph0 km/h, gusts 6 mph10 km/h	93%	1%	0
Sun 2a	Clear	46°8° (likely 44°7° to 51°11°)	46°8°	0%	0 mph0 km/h, gusts 6 mph10 km/h	96%	1%	0
Sun 3a	Clear	46°8° (likely 44°7° to 51°11°)	46°8°	0%	0 mph0 km/h, gusts 7 mph11 km/h	96%	1%	0
Sun 4a	Clear	46°8° (likely 43°6° to 51°11°)	46°8°	0%	0 mph0 km/h, gusts 7 mph11 km/h	93%	1%	0
Sun 5a	Clear	45°7° (likely 43°6° to 50°10°)	45°7°	0%	0 mph0 km/h, gusts 6 mph10 km/h	96%	2%	0
Sun 6a	Clear	45°7° (likely 42°6° to 50°10°)	45°7°	0%	0 mph0 km/h, gusts 7 mph12 km/h	96%	4%	0
Sun 7a	Sunny	45°7° (likely 42°6° to 49°9°)	45°7°	0%	0 mph0 km/h, gusts 7 mph12 km/h	96%	2%	0
Sun 8a	Sunny	45°7° (likely 42°6° to 50°10°)	44°7°	0%	5 mph8 km/h from NE, gusts 7 mph12 km/h	96%	7%	0
Sun 9a	Sunny	50°10° (likely 48°9° to 51°11°)	49°9°	0%	5 mph8 km/h from NE, gusts 7 mph11 km/h	83%	5%	1
Sun 10a	Sunny	54°12° (likely 53°12° to 55°13°)	54°12°	0%	5 mph8 km/h from NE, gusts 8 mph13 km/h	71%	7%	2
Sun 11a	Sunny	58°14° (likely 56°13° to 59°15°)	58°14°	0%	5 mph8 km/h from NE, gusts 6 mph10 km/h	62%	3%	3
Sun 12p	Sunny	60°16° (likely 58°14° to 62°17°)	60°16°	0%	5 mph8 km/h from NE, gusts 5 mph8 km/h	55%	2%	4
Sun 1p	Sunny	61°16° (likely 59°15° to 63°17°)	61°16°	0%	5 mph8 km/h from N, gusts 5 mph8 km/h	53%	6%	4
Sun 2p	Sunny	63°17° (likely 60°16° to 64°18°)	63°17°	0%	5 mph8 km/h from N, gusts 5 mph8 km/h	48%	3%	4
Sun 3p	Sunny	64°18° (likely 61°16° to 65°18°)	64°18°	0%	5 mph8 km/h from N, gusts 5 mph8 km/h	45%	1%	4
Sun 4p	Sunny	63°17° (likely 61°16° to 64°18°)	63°17°	0%	5 mph8 km/h from N, gusts 5 mph8 km/h	46%	2%	3
Sun 5p	Sunny	62°17° (likely 61°16° to 64°18°)	62°17°	0%	5 mph8 km/h from N, gusts 4 mph7 km/h	48%	0%	1
Sun 6p	Clear	59°15° (likely 58°14° to 61°16°)	59°15°	0%	0 mph0 km/h, gusts 3 mph5 km/h	55%	0%	0
Sun 7p	Clear	57°14° (likely 54°12° to 59°15°)	57°14°	0%	0 mph0 km/h, gusts 3 mph5 km/h	59%	0%	0
Sun 8p	Clear	54°12° (likely 53°12° to 58°14°)	54°12°	0%	0 mph0 km/h, gusts 4 mph6 km/h	69%	0%	0
Sun 9p	Clear	54°12° (likely 52°11° to 57°14°)	54°12°	0%	0 mph0 km/h, gusts 3 mph5 km/h	71%	0%	0
Sun 10p	Clear	53°12° (likely 50°10° to 55°13°)	53°12°	0%	0 mph0 km/h, gusts 5 mph9 km/h	74%	1%	0
Sun 11p	Clear	50°10° (likely 48°9° to 54°12°)	50°10°	0%	0 mph0 km/h, gusts 8 mph13 km/h	86%	2%	0
Mon 12a	Clear	49°9° (likely 48°9° to 54°12°)	49°9°	0%	0 mph0 km/h, gusts 6 mph9 km/h	89%	1%	0
Mon 1a	Clear	49°9° (likely 47°8° to 54°12°)	49°9°	0%	0 mph0 km/h, gusts 4 mph6 km/h	89%	3%	0
Mon 2a	Clear	48°9° (likely 48°9° to 53°12°)	48°9°	0%	0 mph0 km/h, gusts 4 mph6 km/h	93%	0%	0
Mon 3a	Clear	48°9° (likely 48°9° to 53°12°)	48°9°	0%	0 mph0 km/h, gusts 5 mph8 km/h	93%	6%	0
Mon 4a	Clear	47°8° (likely 47°8° to 52°11°)	47°8°	0%	0 mph0 km/h, gusts 6 mph10 km/h	96%	13%	0
Mon 5a	Clear	47°8° (likely 46°8° to 52°11°)	47°8°	0%	0 mph0 km/h, gusts 8 mph13 km/h	96%	18%	0
Mon 6a	Clear	47°8° (likely 46°8° to 51°11°)	47°8°	0%	0 mph0 km/h, gusts 8 mph13 km/h	96%	17%	0
Mon 7a	Mostly sunny	46°8° (likely 46°8° to 51°11°)	46°8°	0%	0 mph0 km/h, gusts 8 mph13 km/h	100%	21%	0
Mon 8a	Mostly sunny	47°8° (likely 45°7° to 51°11°)	47°8°	0%	0 mph0 km/h, gusts 8 mph12 km/h	96%	19%	0
Mon 9a	Sunny	52°11° (likely 50°10° to 53°12°)	52°11°	0%	0 mph0 km/h, gusts 8 mph13 km/h	86%	8%	1
Mon 10a	Sunny	56°13° (likely 53°12° to 57°14°)	56°13°	0%	5 mph8 km/h from W, gusts 9 mph15 km/h	74%	9%	2
Mon 11a	Sunny	59°15° (likely 56°13° to 59°15°)	59°15°	0%	5 mph8 km/h from W, gusts 9 mph15 km/h	69%	7%	3
Mon 12p	Sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	5 mph8 km/h from W, gusts 9 mph15 km/h	60%	3%	4
Mon 1p	Sunny	64°18° (likely 61°16° to 64°18°)	64°18°	0%	5 mph8 km/h from W, gusts 10 mph15 km/h	56%	0%	4
Mon 2p	Sunny	66°19° (likely 62°17° to 66°19°)	66°19°	0%	5 mph8 km/h from W, gusts 9 mph15 km/h	52%	0%	4
Mon 3p	Sunny	67°19° (likely 61°16° to 67°19°)	67°19°	0%	5 mph8 km/h from W, gusts 10 mph16 km/h	52%	0%	4
Mon 4p	Sunny	67°19° (likely 62°17° to 67°19°)	67°19°	0%	5 mph8 km/h from W, gusts 9 mph15 km/h	54%	0%	3

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Mostly sunny. High 63°17°, low 45°7°. Typical 64°18° / 49°9°. Dry. Forecasts agree.
1. Evening
  6 PM–midnight
  Clear, 52°11°
  Dry
2. Overnight
  midnight–6 AM
  Clear, 45°7°
  Dry
Official NWS forecast
Today: Sunny, with a high near 63. North wind around 5 mph.
Tonight: Clear, with a low around 45. East wind 0 to 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
61°16°–63°17°
Low, likely
41°5°–46°8°
Typical high / low
64°18° / 49°9°
Wind
9 mph15 km/h, gusts 17 mph27 km/h
UV peak
4
Tomorrow, Oct 25. Sunny. High 65°18°, low 46°8°. Typical 64°18° / 49°9°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 47°8°
  Dry
Official NWS forecast
Day: Sunny, with a high near 65. Northeast wind 0 to 5 mph.
Night: Clear, with a low around 46. Northwest wind around 0 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–65°18°
Low, likely
42°6°–49°9°
Typical high / low
64°18° / 49°9°
Wind
7 mph11 km/h, gusts 13 mph21 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 67°19°, low 51°11°. Typical 64°18° / 48°9°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 61°16°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 57°14°
  Dry
Official NWS forecast
Day: Sunny, with a high near 67. West wind 0 to 5 mph.
Night: Clear, with a low around 51.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
63°17°–67°19°
Low, likely
46°8°–51°11°
Typical high / low
64°18° / 48°9°
Wind
10 mph16 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 66°19°, low 50°10°. Typical 63°17° / 48°9°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 56°13°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 50°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 66.
Night: Mostly clear, with a low around 50.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
63°17°–66°19°
Low, likely
50°10°–55°13°
Typical high / low
63°17° / 48°9°
Wind
17 mph28 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 65°18°, low 53°12°. Typical 63°17° / 48°9°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 53°12°
  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 53.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–65°18°
Low, likely
47°8°–53°12°
Typical high / low
63°17° / 48°9°
Wind
17 mph27 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 67°19°, low 55°13°. Typical 62°17° / 47°8°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 53°12°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 57°14°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 67.
Night: Mostly clear, with a low around 55.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–67°19°
Low, likely
50°10°–55°13°
Typical high / low
62°17° / 47°8°
Wind
11 mph18 km/h, gusts 22 mph36 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 71°22°, low 56°13°. Typical 62°17° / 47°8°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 56°13°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 62°17°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 56°13°
  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 56.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–71°22°
Low, likely
54°12°–57°14°
Typical high / low
62°17° / 47°8°
Wind
10 mph17 km/h, gusts 26 mph41 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 65°18°, low 54°12°. Typical 62°17° / 47°8°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 54°12°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 56°13°
  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
51°11°–57°14°
Typical high / low
62°17° / 47°8°
Wind
13 mph21 km/h, gusts 27 mph43 km/h
UV peak
4
Sunday, Nov 1. Drizzle. High 66°19°, low 56°13°. Typical 61°16° / 46°8°. Rain 0.05 in1.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 57°14°
  Dry
2. Afternoon
  noon–6 PM
  Drizzle, 66°19°
  20% chance · 0.02 in0.6 mm
3. Evening
  6 PM–midnight
  Showers, 64°18°
  30% chance · 0.07 in1.8 mm
4. Overnight
  midnight–6 AM
  Showers, 63°17°
  30% chance · 0.11 in2.7 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
63°17°–71°22°
Low, likely
53°12°–58°14°
Typical high / low
61°16° / 46°8°
Wind
17 mph27 km/h, gusts 24 mph39 km/h
UV peak
2
Monday, Nov 2. Showers. High 68°20°, low 62°17°. Typical 61°16° / 46°8°. Rain 0.26 in6.6 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Showers, 65°18°
  30% chance · 0.13 in3.2 mm
2. Afternoon
  noon–6 PM
  Cloudy, 69°20°
  Dry
3. Evening
  6 PM–midnight
  Drizzle, 67°19°
  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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
63°17°–73°23°
Low, likely
59°15°–67°19°
Typical high / low
61°16° / 46°8°
Wind
24 mph39 km/h, gusts 38 mph61 km/h

10 days15 days30 days

The outlook

Today
Dry, high 63°, low 45°.
Tomorrow
Dry, high 65°, low 46°.
Monday
Dry, high 67°, low 51°.
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

Severn River at Annapolis (IN MLLW)

11 mi

Minor flooding

Level: 2.8 ft

Forecast peak 2.8 ft Sat 6 PM, minor flooding

Reading from Sat 4:36 PM · NWS gauge page

Eastern Bay at Claiborne (IN MLLW)

8.5 mi

Below flood stage

Level: 3.0 ft

Forecast peak 3.1 ft Sun 4 PM

Reading from Sat 4:36 PM · NWS gauge page

Chesapeake Bay at Tolchester Beach (IN MLLW)

18 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

Cooperative Oxford Laboratory (IN MLLW)

20 mi

Below flood stage

Level: 3.2 ft

Reading from Sat 3:45 PM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 65% less heating than a typical week.

This week 23Typical 66

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 14
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at.

Comfort

Dry air outside (dew point 41°F).

Open the windows?

Sun, 12:00 PM–5:00 PM

Good stretch to open the windows.

Is this typical?

Annapolis United States Naval Academy Asos · official normals 1991–2020 · records 1894–2026

Oct 24, today vs a typical year

Today’s expected high is about typical for the date.

Last 7 days vs normal

On average 0° colder than normal (daily mean temperature).

−6°−3°SunOct 18
−3°−2°MonOct 19
+4°+2°TueOct 20
+2°+1°WedOct 21
+2°+1°ThuOct 22
+1°FriOct 23
—SatOct 24

Chester weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 50 min; Losing 2 min 16 s a day; shortest Dec 21, 1 h 24 min less
Golden hour: 5:37–6:30 PM; Morning 7:07–8:00 AM
Blue hour: 6:30–6:41 PM; Morning 6:56–7:07 AM; first light 6:56 AM

Stars tonight? Fair

Clear 7 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 southwest from Chester. The highest point on the skyline is about 2,800 ft, 20 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

Chester, MD weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Severn River at Annapolis (IN MLLW)

Eastern Bay at Claiborne (IN MLLW)

Chesapeake Bay at Tolchester Beach (IN MLLW)

Cooperative Oxford Laboratory (IN MLLW)

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon