Frost Advisory
Ends in 9 h 42 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 11:00 PM EDT at KILG

Middletown, DE weather

Clear and 39°4°.

Forecasts agree

Now 39°4°

Clear

Wind: 3 mph5 km/h; From the northwest. Light through 11 AM
Dew point: 37°3°; Comfortable
Humidity: 93%; Air 39°4°, dew point 37°3° · fog or dew likely
UV tomorrow: 4Moderate; Moderate 11 AM–4 PM · peak 4
Air quality: 46Good; Main pollutant: PM2.5 (fine particles)
Pressure: 30.56 inHg1035 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Low 34°1° tomorrow at 6 AM
Above 50°10° tomorrow by 10 AM
High 65°18° tomorrow at 2 PM
Drops 12°7° tomorrow 5–8 PM (65°18° → 53°12°)
Below 50°10° tomorrow night after 8 PM

TonightNear 37°3° · Clear
Tomorrow morningUp to 58°14° by 11 AM · Clear
Tomorrow afternoonUp to 65°18° by 2 PM · Clear
Tomorrow nightDown to 37°3° by 3 AM · Clear
Monday morningUp to 59°15° by 11 AM · Partly cloudy
Monday afternoonUp to 70°21° by 3 PM · Clear
Monday nightDown to 49°9° by 9 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 11p	Clear	38°3° (likely 38°3° to 46°8°)	38°3°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	0%	0
Sun 12a	Clear	37°3° (likely 37°3° to 45°7°)	37°3°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	0%	0
Sun 1a	Clear	37°3° (likely 37°3° to 44°7°)	37°3°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	0%	0
Sun 2a	Clear	36°2° (likely 36°2° to 43°6°)	36°2°	0%	0 mph0 km/h, gusts 4 mph7 km/h	100%	2%	0
Sun 3a	Clear	36°2° (likely 36°2° to 42°6°)	36°2°	0%	0 mph0 km/h, gusts 3 mph5 km/h	100%	2%	0
Sun 4a	Clear	35°2° (likely 35°2° to 40°4°)	35°2°	0%	0 mph0 km/h, gusts 5 mph9 km/h	100%	1%	0
Sun 5a	Clear	35°2° (likely 35°2° to 40°4°)	35°2°	0%	0 mph0 km/h, gusts 5 mph9 km/h	100%	3%	0
Sun 6a	Clear	34°1° (likely 34°1° to 40°4°)	34°1°	0%	0 mph0 km/h, gusts 5 mph9 km/h	100%	4%	0
Sun 7a	Sunny	34°1° (likely 34°1° to 39°4°)	34°1°	0%	0 mph0 km/h, gusts 5 mph9 km/h	100%	3%	0
Sun 8a	Sunny	36°2° (likely 36°2° to 40°4°)	36°2°	0%	0 mph0 km/h, gusts 6 mph9 km/h	100%	4%	0
Sun 9a	Sunny	45°7° (likely 42°6° to 45°7°)	45°7°	0%	0 mph0 km/h, gusts 5 mph9 km/h	79%	2%	1
Sun 10a	Sunny	52°11° (likely 51°11° to 53°12°)	52°11°	0%	0 mph0 km/h, gusts 4 mph6 km/h	69%	1%	2
Sun 11a	Sunny	58°14° (likely 56°13° to 58°14°)	58°14°	0%	0 mph0 km/h, gusts 2 mph4 km/h	55%	2%	3
Sun 12p	Sunny	61°16° (likely 60°16° to 62°17°)	61°16°	0%	5 mph8 km/h from N, gusts 4 mph6 km/h	48%	2%	4
Sun 1p	Sunny	63°17° (likely 62°17° to 64°18°)	63°17°	0%	0 mph0 km/h, gusts 5 mph8 km/h	44%	2%	4
Sun 2p	Sunny	65°18° (likely 63°17° to 65°18°)	65°18°	0%	0 mph0 km/h, gusts 5 mph9 km/h	40%	2%	4
Sun 3p	Sunny	65°18° (likely 63°17° to 65°18°)	65°18°	0%	0 mph0 km/h, gusts 4 mph7 km/h	41%	1%	4
Sun 4p	Sunny	65°18° (likely 64°18° to 65°18°)	65°18°	0%	0 mph0 km/h, gusts 5 mph7 km/h	41%	1%	2
Sun 5p	Sunny	65°18° (likely 63°17° to 65°18°)	65°18°	0%	0 mph0 km/h, gusts 5 mph8 km/h	41%	1%	1
Sun 6p	Clear	60°16° (likely 57°14° to 60°16°)	60°16°	0%	0 mph0 km/h, gusts 5 mph7 km/h	51%	0%	0
Sun 7p	Clear	53°12° (likely 53°12° to 56°13°)	53°12°	0%	0 mph0 km/h, gusts 4 mph7 km/h	66%	0%	0
Sun 8p	Clear	45°7° (likely 45°7° to 53°12°)	45°7°	0%	0 mph0 km/h, gusts 4 mph7 km/h	86%	0%	0
Sun 9p	Clear	42°6° (likely 42°6° to 51°11°)	42°6°	0%	0 mph0 km/h, gusts 4 mph6 km/h	96%	1%	0
Sun 10p	Clear	41°5° (likely 41°5° to 49°9°)	41°5°	0%	0 mph0 km/h, gusts 4 mph7 km/h	100%	3%	0
Sun 11p	Clear	39°4° (likely 39°4° to 48°9°)	39°4°	0%	0 mph0 km/h, gusts 8 mph12 km/h	100%	3%	0
Mon 12a	Clear	39°4° (likely 39°4° to 46°8°)	39°4°	0%	0 mph0 km/h, gusts 9 mph14 km/h	100%	2%	0
Mon 1a	Clear	38°3° (likely 38°3° to 46°8°)	38°3°	0%	0 mph0 km/h, gusts 8 mph13 km/h	100%	3%	0
Mon 2a	Clear	38°3° (likely 38°3° to 45°7°)	38°3°	0%	0 mph0 km/h, gusts 7 mph11 km/h	100%	7%	0
Mon 3a	Clear	37°3° (likely 37°3° to 45°7°)	37°3°	0%	0 mph0 km/h, gusts 7 mph11 km/h	100%	3%	0
Mon 4a	Clear	37°3° (likely 37°3° to 44°7°)	37°3°	0%	0 mph0 km/h, gusts 7 mph11 km/h	100%	4%	0
Mon 5a	Clear	37°3° (likely 37°3° to 44°7°)	37°3°	0%	0 mph0 km/h, gusts 6 mph10 km/h	100%	5%	0
Mon 6a	Clear	37°3° (likely 37°3° to 44°7°)	37°3°	0%	0 mph0 km/h, gusts 5 mph8 km/h	100%	40%	0
Mon 7a	Sunny	37°3° (likely 37°3° to 43°6°)	37°3°	0%	0 mph0 km/h, gusts 5 mph9 km/h	100%	40%	0
Mon 8a	Sunny	39°4° (likely 39°4° to 44°7°)	39°4°	0%	0 mph0 km/h, gusts 5 mph9 km/h	100%	40%	0
Mon 9a	Sunny	48°9° (likely 45°7° to 49°9°)	48°9°	0%	0 mph0 km/h, gusts 5 mph8 km/h	83%	40%	1
Mon 10a	Partly sunny	54°12° (likely 49°9° to 55°13°)	54°12°	0%	5 mph8 km/h from W, gusts 6 mph10 km/h	74%	45%	2
Mon 11a	Mostly sunny	59°15° (likely 57°14° to 60°16°)	59°15°	0%	5 mph8 km/h from W, gusts 11 mph18 km/h	67%	28%	3
Mon 12p	Sunny	63°17° (likely 61°16° to 63°17°)	63°17°	0%	5 mph8 km/h from W, gusts 12 mph19 km/h	58%	7%	4
Mon 1p	Sunny	66°19° (likely 63°17° to 66°19°)	66°19°	0%	5 mph8 km/h from W, gusts 12 mph19 km/h	52%	3%	4
Mon 2p	Sunny	68°20° (likely 65°18° to 68°20°)	68°20°	0%	5 mph8 km/h from W, gusts 13 mph20 km/h	49%	9%	4
Mon 3p	Sunny	70°21° (likely 65°18° to 70°21°)	70°21°	0%	5 mph8 km/h from W, gusts 13 mph21 km/h	46%	0%	4
Mon 4p	Sunny	70°21° (likely 65°18° to 70°21°)	70°21°	0%	5 mph8 km/h from W, gusts 13 mph21 km/h	46%	0%	3
Mon 5p	Sunny	68°20° (likely 65°18° to 68°20°)	68°20°	0%	5 mph8 km/h from W, gusts 12 mph19 km/h	51%	0%	1
Mon 6p	Clear	63°17° (likely 60°16° to 63°17°)	63°17°	0%	5 mph8 km/h from W, gusts 8 mph13 km/h	60%	0%	0
Mon 7p	Clear	57°14° (likely 56°13° to 58°14°)	57°14°	0%	5 mph8 km/h from W, gusts 6 mph10 km/h	75%	0%	0
Mon 8p	Clear	52°11° (likely 52°11° to 56°13°)	52°11°	0%	0 mph0 km/h, gusts 6 mph10 km/h	89%	0%	0
Mon 9p	Clear	49°9° (likely 49°9° to 55°13°)	49°9°	0%	0 mph0 km/h, gusts 5 mph8 km/h	96%	0%	0
Mon 10p	Clear	49°9° (likely 48°9° to 54°12°)	49°9°	0%	0 mph0 km/h, gusts 5 mph9 km/h	96%	0%	0

Days ahead

Tap a day for its hours and the official wording.

Today, Oct 24. Sunny. High 62°17°, low 34°1°. Dry. Forecasts agree.
1. Overnight
  midnight–6 AM
  Clear, 35°2°
  Dry
Official NWS forecast
Tonight: Widespread frost. Clear, with a low around 34. East wind around 0 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
62°17°
Low, likely
34°1°–37°3°
Wind
5 mph9 km/h, gusts 11 mph18 km/h
UV peak
4
Tomorrow, Oct 25. Sunny. High 66°19°, low 37°3°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 45°7°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 37°3°
  Dry
Official NWS forecast
Day: Widespread frost before 9am. Sunny, with a high near 66. Northwest wind 0 to 5 mph.
Night: Patchy frost after 11pm. Mostly clear, with a low around 37. West wind around 0 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
64°18°–66°19°
Low, likely
37°3°–39°4°
Wind
6 mph9 km/h, gusts 13 mph20 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 70°21°, low 46°8°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 51°11°
  Dry
Official NWS forecast
Day: Patchy frost before 9am. Sunny, with a high near 70. West wind 0 to 5 mph.
Night: Clear, with a low around 46. Northwest wind 0 to 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
66°19°–70°21°
Low, likely
38°3°–46°8°
Wind
9 mph14 km/h, gusts 16 mph25 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 67°19°, low 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 44°7°
  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 40.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–67°19°
Low, likely
40°4°–50°10°
Wind
10 mph17 km/h, gusts 21 mph34 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 65°18°, low 45°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 48°9°
  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 45.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–65°18°
Low, likely
41°5°–47°8°
Wind
7 mph12 km/h, gusts 17 mph27 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 70°21°, low 49°9°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Partly sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 67°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 56°14°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 51°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 70.
Night: Mostly clear, with a low around 49.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
67°19°–70°21°
Low, likely
46°8°–49°9°
Wind
9 mph15 km/h, gusts 25 mph41 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 73°23°, low 49°9°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 51°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 73°23°
  Dry
3. Evening
  6 PM–midnight
  Clear, 60°16°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 52°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 73.
Night: Mostly clear, with a low around 49.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
73°23°–75°24°
Low, likely
48°9°–52°11°
Wind
7 mph11 km/h, gusts 15 mph24 km/h
UV peak
4
Saturday, Oct 31. Partly sunny. High 71°22°, low 51°11°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 69°21°
  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 71.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
63°17°–72°22°
Low, likely
48°9°–53°12°
Wind
10 mph15 km/h, gusts 18 mph29 km/h
UV peak
4
Sunday, Nov 1. Cloudy. High 71°22°, low 53°12°. Rain 0.02 in0.5 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 53°12°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 71°22°
  Dry
3. Evening
  6 PM–midnight
  Drizzle, 63°17°
  30% chance · 0.04 in0.9 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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
68°20°–75°24°
Low, likely
46°8°–56°13°
Wind
11 mph17 km/h, gusts 27 mph44 km/h
UV peak
4
Monday, Nov 2. Drizzle. High 72°22°, low 61°16°. Rain 0.28 in7.1 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Showers, 64°18°
  30% chance · 0.15 in3.8 mm
2. Afternoon
  noon–6 PM
  Drizzle, 72°22°
  20% chance · 0.02 in0.4 mm
3. Evening
  6 PM–midnight
  Clear, 65°18°
  20% chance
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
69°21°–78°26°
Low, likely
58°14°–68°20°
Wind
20 mph33 km/h, gusts 38 mph61 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 62°, low 34°.
Tomorrow
Dry, high 66°, low 37°, warming up.
Monday
Dry, high 70°, low 46°, warming up.
Rest of week
Mostly dry, highs 65–73°.

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

Chesapeake Bay at Havre de Grace (IN MLLW)

21 mi

Action stage

Level: 3.8 ft

Forecast peak 4.0 ft Sun 10 PM, minor flooding

Reading from Sat 9 PM · NWS gauge page

Chesapeake and Delaware Canal at Chesapeake City (IN MLLW)

7.6 mi

Below flood stage

Level: 4.5 ft

Forecast peak 4.2 ft Sat 11 PM

Reading from Sat 9:36 PM · NWS gauge page

Delaware River at Delaware City (IN MLLW)

12 mi

Below flood stage

Level: 6.2 ft

Reading from Sat 9:36 PM · NWS gauge page

Christina River at Coochs Bridge

13 mi

Below flood stage

Level: 4.0 ft
Flow: 8 cfs

Reading from Sat 9:15 PM · NWS gauge page

Sun & moon

Sun

Daylight: 10 h 49 min; Losing 2 min 25 s a day; shortest Dec 21, 1 h 26 min less
Golden hour: 5:34–6:28 PM; Morning 7:05–7:59 AM
Blue hour: 6:28–6:38 PM; Morning 6:54–7:05 AM; first light 6:54 AM

Stars tonight? Fair

Clear 11:18 PM–6:55 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 5:34 AM · rises 5:07 PM
Full moon: Oct 26
New moon: Nov 9

Looking east from Middletown. Water in view.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

Middletown, DE weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Chesapeake Bay at Havre de Grace (IN MLLW)

Chesapeake and Delaware Canal at Chesapeake City (IN MLLW)

Delaware River at Delaware City (IN MLLW)

Christina River at Coochs Bridge

Sun & moon

Sun

Stars tonight? Fair

Moon