Frost Advisory
Ends in 7 h 39 min
When
From midnight tonight to 9 AM EDT Saturday.
Where
In Delaware, Kent and New Castle Counties. In Maryland, Caroline, Kent MD, Queen Annes, and Talbot Counties.
Issued for this forecast zone · National Weather Service Mount Holly NJ
What, impacts and precautionsHide details
What
Temperatures as low as 34 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; Talbot; Caroline
See it on weather.gov (opens in a new tab)

Observed 11:55 PM EDT at KDOV

Smyrna, DE weather

Clear and 51°10°.

Forecasts agree

Now 51°10°

Clear

Wind: 6 mph9 km/h; From the east. Up to 6 mph9 km/h through 1 PM
Dew point: 37°3°; Comfortable
UV index: 0Low; Moderate 11 AM–5 PM · peak 4
Air quality: 39Good; Main pollutant: PM2.5 (fine particles)
Pressure: 30.43 inHg1030 hPa; Rising slowly · +0.02 inHg+0.7 hPa next 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Low 36°2° today at 6 AM
Above 50°10° today by 10 AM
High 62°17° today at 2 PM
Below 50°10° tonight after 9 PM

TonightNear 39°4° · Clear
This morningUp to 57°14° by 11 AM · Clear
This afternoonNear 61°16° · Clear
TonightDown to 39°4° by 4 AM · Clear
Tomorrow morningUp to 57°14° by 11 AM · Clear
Tomorrow afternoonUp to 65°18° by 3 PM · Clear
Tomorrow nightDown to 42°6° by midnight · 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 1a	Mostly clear	40°4° (likely 40°4° to 48°9°)	40°4°	0%	0 mph0 km/h, gusts 5 mph7 km/h	100%	31%	0
Sat 2a	Clear	40°4° (likely 40°4° to 48°9°)	40°4°	0%	0 mph0 km/h, gusts 4 mph6 km/h	100%	15%	0
Sat 3a	Clear	38°3° (likely 38°3° to 48°9°)	38°3°	0%	0 mph0 km/h, gusts 5 mph9 km/h	100%	6%	0
Sat 4a	Clear	38°3° (likely 38°3° to 47°8°)	38°3°	0%	5 mph8 km/h from NE, gusts 6 mph10 km/h	100%	11%	0
Sat 5a	Mostly clear	38°3° (likely 38°3° to 46°8°)	36°2°	0%	5 mph8 km/h from N, gusts 6 mph10 km/h	100%	15%	0
Sat 6a	Mostly clear	36°2° (likely 36°2° to 44°7°)	33°1°	0%	5 mph8 km/h from N, gusts 8 mph12 km/h	100%	19%	0
Sat 7a	Mostly sunny	37°3° (likely 37°3° to 44°7°)	34°1°	0%	5 mph8 km/h from N, gusts 8 mph13 km/h	100%	21%	0
Sat 8a	Sunny	39°4° (likely 39°4° to 44°7°)	36°2°	0%	5 mph8 km/h from N, gusts 8 mph13 km/h	100%	16%	0
Sat 9a	Sunny	44°7° (likely 44°7° to 49°9°)	41°5°	0%	5 mph8 km/h from N, gusts 8 mph13 km/h	93%	13%	1
Sat 10a	Sunny	53°12° (likely 50°10° to 54°12°)	53°12°	0%	5 mph8 km/h from NE, gusts 9 mph15 km/h	66%	16%	2
Sat 11a	Sunny	57°14° (likely 54°12° to 58°14°)	57°14°	0%	5 mph8 km/h from NE, gusts 10 mph15 km/h	57%	4%	3
Sat 12p	Sunny	59°15° (likely 57°14° to 60°16°)	59°15°	0%	5 mph8 km/h from NE, gusts 9 mph15 km/h	51%	2%	4
Sat 1p	Sunny	61°16° (likely 58°14° to 61°16°)	61°16°	0%	5 mph8 km/h from E, gusts 8 mph13 km/h	48%	3%	4
Sat 2p	Sunny	62°17° (likely 60°16° to 62°17°)	62°17°	0%	5 mph8 km/h from E, gusts 7 mph11 km/h	44%	1%	4
Sat 3p	Sunny	62°17° (likely 60°16° to 62°17°)	62°17°	0%	5 mph8 km/h from E, gusts 7 mph11 km/h	46%	2%	4
Sat 4p	Sunny	62°17° (likely 60°16° to 62°17°)	62°17°	0%	5 mph8 km/h from E, gusts 7 mph11 km/h	46%	0%	3
Sat 5p	Sunny	62°17° (likely 59°15° to 62°17°)	62°17°	0%	5 mph8 km/h from E, gusts 7 mph11 km/h	44%	0%	1
Sat 6p	Clear	59°15° (likely 55°13° to 59°15°)	59°15°	0%	0 mph0 km/h, gusts 7 mph11 km/h	53%	0%	0
Sat 7p	Clear	54°12° (likely 51°11° to 54°12°)	54°12°	0%	5 mph8 km/h from SE, gusts 6 mph10 km/h	64%	0%	0
Sat 8p	Clear	50°10° (likely 49°9° to 51°11°)	50°10°	0%	0 mph0 km/h, gusts 5 mph8 km/h	74%	0%	0
Sat 9p	Clear	45°7° (likely 45°7° to 50°10°)	45°7°	0%	0 mph0 km/h, gusts 5 mph8 km/h	93%	0%	0
Sat 10p	Clear	43°6° (likely 43°6° to 49°9°)	43°6°	0%	0 mph0 km/h, gusts 6 mph10 km/h	100%	0%	0
Sat 11p	Clear	43°6° (likely 43°6° to 49°9°)	43°6°	0%	0 mph0 km/h, gusts 5 mph8 km/h	100%	0%	0
Sun 12a	Clear	42°6° (likely 42°6° to 48°9°)	42°6°	0%	0 mph0 km/h, gusts 5 mph8 km/h	100%	2%	0
Sun 1a	Clear	42°6° (likely 42°6° to 48°9°)	42°6°	0%	0 mph0 km/h, gusts 5 mph7 km/h	100%	10%	0
Sun 2a	Clear	41°5° (likely 41°5° to 48°9°)	41°5°	0%	0 mph0 km/h, gusts 5 mph8 km/h	100%	5%	0
Sun 3a	Clear	40°4° (likely 40°4° to 48°9°)	40°4°	0%	0 mph0 km/h, gusts 6 mph9 km/h	100%	7%	0
Sun 4a	Clear	39°4° (likely 39°4° to 47°8°)	39°4°	0%	0 mph0 km/h, gusts 6 mph10 km/h	100%	19%	0
Sun 5a	Clear	39°4° (likely 39°4° to 46°8°)	39°4°	0%	0 mph0 km/h, gusts 6 mph9 km/h	100%	16%	0
Sun 6a	Clear	38°3° (likely 38°3° to 46°8°)	38°3°	0%	0 mph0 km/h, gusts 5 mph8 km/h	100%	10%	0
Sun 7a	Sunny	38°3° (likely 38°3° to 45°7°)	38°3°	0%	0 mph0 km/h, gusts 5 mph8 km/h	100%	6%	0
Sun 8a	Sunny	40°4° (likely 40°4° to 45°7°)	40°4°	0%	0 mph0 km/h, gusts 6 mph9 km/h	100%	3%	0
Sun 9a	Sunny	46°8° (likely 46°8° to 49°9°)	46°8°	0%	0 mph0 km/h, gusts 5 mph8 km/h	89%	1%	1
Sun 10a	Sunny	52°11° (likely 52°11° to 55°13°)	52°11°	0%	0 mph0 km/h, gusts 8 mph12 km/h	71%	1%	2
Sun 11a	Sunny	57°14° (likely 57°14° to 59°15°)	57°14°	0%	5 mph8 km/h from N, gusts 6 mph9 km/h	64%	2%	3
Sun 12p	Sunny	60°16° (likely 60°16° to 61°16°)	60°16°	0%	5 mph8 km/h from N, gusts 5 mph7 km/h	53%	5%	4
Sun 1p	Sunny	62°17° (likely 61°16° to 63°17°)	62°17°	0%	0 mph0 km/h, gusts 6 mph9 km/h	48%	6%	4
Sun 2p	Sunny	63°17° (likely 62°17° to 64°18°)	63°17°	0%	0 mph0 km/h, gusts 5 mph8 km/h	44%	7%	4
Sun 3p	Sunny	65°18° (likely 63°17° to 65°18°)	65°18°	0%	0 mph0 km/h, gusts 5 mph8 km/h	41%	7%	4
Sun 4p	Sunny	65°18° (likely 63°17° to 65°18°)	65°18°	0%	0 mph0 km/h, gusts 3 mph5 km/h	41%	5%	2
Sun 5p	Sunny	63°17° (likely 62°17° to 63°17°)	63°17°	0%	0 mph0 km/h, gusts 3 mph5 km/h	46%	6%	1
Sun 6p	Clear	59°15° (likely 57°14° to 59°15°)	59°15°	0%	0 mph0 km/h, gusts 5 mph7 km/h	55%	2%	0
Sun 7p	Clear	54°12° (likely 52°11° to 55°13°)	54°12°	0%	0 mph0 km/h, gusts 6 mph10 km/h	69%	0%	0
Sun 8p	Clear	49°9° (likely 49°9° to 52°11°)	49°9°	0%	0 mph0 km/h, gusts 6 mph9 km/h	83%	0%	0
Sun 9p	Clear	46°8° (likely 45°7° to 51°11°)	46°8°	0%	0 mph0 km/h, gusts 3 mph6 km/h	93%	0%	0
Sun 10p	Clear	44°7° (likely 44°7° to 50°10°)	44°7°	0%	0 mph0 km/h, gusts 4 mph6 km/h	96%	0%	0
Sun 11p	Clear	43°6° (likely 43°6° to 49°9°)	43°6°	0%	0 mph0 km/h, gusts 4 mph7 km/h	100%	0%	0
Mon 12a	Clear	42°6° (likely 41°5° to 48°9°)	42°6°	0%	0 mph0 km/h, gusts 4 mph7 km/h	100%	0%	0

Days ahead

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

Today, Oct 24. Mostly sunny. High 62°17°, low 36°2°. Typical 66°19° / 46°8°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 39°4°
  Dry
Official NWS forecast
Today: Areas of frost before 10am. Sunny, with a high near 62. Northeast wind around 5 mph.
Tonight: Areas of frost. Mostly clear, with a low around 36. Northeast wind 0 to 5 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
60°16°–62°17°
Low, likely
36°2°–43°6°
Typical high / low
66°19° / 46°8°
Wind
7 mph11 km/h, gusts 14 mph22 km/h
UV peak
4
Tomorrow, Oct 25. Mostly sunny. High 65°18°, low 39°4°. Typical 66°19° / 46°8°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 40°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 49°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 41°5°
  Dry
Official NWS forecast
Day: Patchy frost before 9am. Sunny, with a high near 65. Northeast wind 0 to 5 mph.
Night: Mostly clear, with a low around 39. East wind around 0 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
63°17°–65°18°
Low, likely
39°4°–43°6°
Typical high / low
66°19° / 46°8°
Wind
6 mph10 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 68°20°, low 48°9°. Typical 65°18° / 46°8°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 42°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 51°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 68.
Night: Mostly clear, with a low around 48.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
66°19°–68°20°
Low, likely
38°3°–48°9°
Typical high / low
65°18° / 46°8°
Wind
10 mph15 km/h, gusts 16 mph26 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 67°19°, low 46°8°. Typical 65°18° / 45°7°. 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, 53°12°
  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: Partly cloudy, with a low around 46.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–67°19°
Low, likely
46°8°–51°11°
Typical high / low
65°18° / 45°7°
Wind
12 mph19 km/h, gusts 25 mph41 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 64°18°, low 49°9°. Typical 65°18° / 45°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 49°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 64.
Night: Mostly cloudy, with a low around 49.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
60°16°–64°18°
Low, likely
43°6°–49°9°
Typical high / low
65°18° / 45°7°
Wind
10 mph17 km/h, gusts 20 mph32 km/h
UV peak
4
Thursday, Oct 29. Cloudy. High 68°20°, low 52°11°. Typical 64°18° / 45°7°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 56°13°
  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 68.
Night: Partly cloudy, with a low around 52.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
63°17°–69°21°
Low, likely
45°7°–52°11°
Typical high / low
64°18° / 45°7°
Wind
8 mph13 km/h, gusts 24 mph39 km/h
UV peak
4
Friday, Oct 30. Partly sunny. High 70°21°, low 50°10°. Typical 64°18° / 44°7°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 51°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 58°15°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 50°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 70.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
67°19°–73°23°
Low, likely
48°9°–52°11°
Typical high / low
64°18° / 44°7°
Wind
9 mph15 km/h, gusts 21 mph33 km/h
UV peak
4
Saturday, Oct 31. Mostly sunny. High 68°20°, low 50°10°. Typical 64°18° / 44°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 49°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 50°10°
  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
65°18°–72°22°
Low, likely
47°8°–52°11°
Typical high / low
64°18° / 44°7°
Wind
13 mph20 km/h, gusts 25 mph40 km/h
UV peak
4
Sunday, Nov 1. Cloudy. High 67°19°, low 51°11°. Typical 63°17° / 44°7°. Rain 0.01 in0.3 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 59°15°
  20% chance
4. Overnight
  midnight–6 AM
  Cloudy, 57°14°
  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
60°16°–72°22°
Low, likely
47°8°–56°13°
Typical high / low
63°17° / 44°7°
Wind
13 mph20 km/h, gusts 20 mph33 km/h
UV peak
4
Monday, Nov 2. Drizzle. High 65°18°, low 56°13°. Typical 63°17° / 43°6°. Rain 0.17 in4.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 58°15°
  Dry
2. Afternoon
  noon–6 PM
  Drizzle, 62°17°
  20% chance · 0.11 in2.7 mm
3. Evening
  6 PM–midnight
  Drizzle, 59°15°
  20% chance · 0.17 in4.2 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
55°13°–72°22°
Low, likely
49°9°–61°16°
Typical high / low
63°17° / 43°6°
Wind
15 mph24 km/h, gusts 41 mph66 km/h

10 days15 days30 days

The outlook

Today
Dry, high 62°, low 36°.
Tomorrow
Dry, high 65°, low 39°, warming up.
Monday
Dry, high 68°, low 48°, warming up.
Rest of week
Mostly dry, highs 64–70°.

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

Murderkill River at Bowers Beach (IN MLLW)

20 mi

Below flood stage

Level: 4.4 ft

Forecast peak 6.6 ft Sat 8 AM, minor flooding

Reading from Fri 11:18 PM · NWS gauge page

Chesapeake and Delaware Canal at Chesapeake City (IN MLLW)

19 mi

Below flood stage

Level: 3.1 ft

Forecast peak 4.3 ft Sat 10 PM

Reading from Sat 12:06 AM · NWS gauge page

St. Jones River at Dover

10 mi

Below flood stage

Level: 3.5 ft

Reading from Fri 11:15 PM · NWS gauge page

Unicorn Branch near Millington

14 mi

Level: 1.7 ft

Reading from Sat 12 AM · NWS gauge page

For your home

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

Heating this week

About 55% less heating than a typical week.

This week 31Typical 69

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 25
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at. About 17 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 37°F).

Open the windows?

Today, 1:00 PM–5:00 PM

Good stretch to open the windows.

Is this typical?

DOVER · official normals 1991–2020 · records 1893–2026

Oct 24, today vs a typical year

Today’s expected high is 4°2° colder than typical.

Last 7 days vs normal

On average 2°1° colder than normal (daily mean temperature).

+7°+4°SatOct 17
−11°−6°SunOct 18
−6°−3°MonOct 19
−3°−2°TueOct 20
±0°WedOct 21
−1°ThuOct 22
+1°FriOct 23

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

Sun & moon

Sun

Daylight: 10 h 49 min; Losing 2 min 21 s a day; shortest Dec 21, 1 h 25 min less
Golden hour: 5:33–6:27 PM; Morning 7:04–7:58 AM
Blue hour: 6:27–6:38 PM; Morning 6:54–7:04 AM; first light 6:54 AM

Stars tonight? Fair

Mostly clear 2–6:54 AM, but the moon is 96% lit and up.

Moon

Waxing gibbous

95% lit · growing

Today: sets 5:33 AM · rises 5:07 PM
Full moon: Oct 26
New moon: Nov 9

Looking east from Smyrna. 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

Smyrna, DE weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Murderkill River at Bowers Beach (IN MLLW)

Chesapeake and Delaware Canal at Chesapeake City (IN MLLW)

St. Jones River at Dover

Unicorn Branch near Millington

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