Chesapeake Bay at Havre de Grace (IN MLLW)
9.4 mi- Level
- 1.5 ft
Forecast peak 3.8 ft Sat 9 PM, action stage
Reading from Sat 4 PM · NWS gauge page
1 active weather alert
Frost Advisory
Starts in 7 h 5 min
- When
- From 1 AM to 9 AM EDT Sunday.
- Where
- Portions of central, northeast, and northern Maryland and northern Virginia.
Issued for this forecast zone · National Weather Service Baltimore MD/Washington DC
What, impacts and precautionsHide details
What
Temperatures as low as 33 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: Frederick; Carroll; Northern Baltimore; Cecil; Northwest Montgomery; Northwest Howard; Northwest Harford; Southeast Harford; Rappahannock; Culpeper; Northern Fauquier; Southern Fauquier; Western Loudoun; Eastern Loudoun; Northwest Prince William; Central and Southeast Prince William/Manassas/Manassas Park
See it on weather.gov (opens in a new tab)
Observed 4:45 PM EDT at KMTN
Darlington, MD weather
Sunny and 63°17°, jacket by 7 PM.
Today: low 35°2° (likely 35°2° to 39°4°), high 63°17° (likely 60°16° to 63°17°).
Now 63°17°
Sunny
- Wind
- Calm
- Light through 5 AM
- Dew point
- 37°3°
- Comfortable
- UV tomorrow
- 4Moderate
- Moderate 11 AM–5 PM · peak 4
- Air quality
- 35Good
- Ozone · tomorrow moderate
- Pressure
- 30.54 inHg1034 hPa
- Steady over the last 3 h
Next 2 hours
No precipitation expected in the next 2 hours.
From forecast models
Next 48 hours
Good hours for
TonightDown to 37°3° by 5 AM · Clear
Tomorrow morningUp to 56°13° by 11 AM · Clear
Tomorrow afternoonUp to 64°18° by 2 PM · Clear
Tomorrow nightDown to 38°3° by 5 AM · Clear
Monday morningUp to 57°14° by 11 AM · Clear
Monday afternoonUp to 68°20° by 4 PM · Clear
| 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% | 3 mph5 km/h from S, gusts 5 mph8 km/h | 44% | 0% | 1 |
| Sat 6p | Clear | 57°14° (likely 55°13° to 57°14°) | 57°14° | 0% | 2 mph3 km/h from S, gusts 5 mph8 km/h | 53% | 0% | 0 |
| Sat 7p | Clear | 53°12° (likely 51°11° to 53°12°) | 53°12° | 0% | 2 mph3 km/h from S, gusts 4 mph7 km/h | 61% | 0% | 0 |
| Sat 8p | Clear | 48°9° (likely 48°9° to 51°11°) | 48°9° | 0% | 1 mph2 km/h from S, gusts 3 mph4 km/h | 71% | 0% | 0 |
| Sat 9p | Clear | 47°8° (likely 47°8° to 50°10°) | 47°8° | 0% | 1 mph2 km/h from S, gusts 2 mph3 km/h | 71% | 0% | 0 |
| Sat 10p | Clear | 45°7° (likely 45°7° to 49°9°) | 45°7° | 0% | 1 mph2 km/h from SW, gusts 2 mph4 km/h | 76% | 0% | 0 |
| Sat 11p | Clear | 44°7° (likely 44°7° to 48°9°) | 44°7° | 0% | 1 mph2 km/h from SW, gusts 3 mph5 km/h | 79% | 0% | 0 |
| Sun 12a | Clear | 42°6° (likely 42°6° to 47°8°) | 42°6° | 0% | 1 mph2 km/h from SW, gusts 3 mph4 km/h | 86% | 0% | 0 |
| Sun 1a | Clear | 41°5° (likely 41°5° to 46°8°) | 41°5° | 0% | 1 mph2 km/h from W, gusts 3 mph4 km/h | 89% | 0% | 0 |
| Sun 2a | Clear | 39°4° (likely 39°4° to 44°7°) | 39°4° | 0% | 1 mph2 km/h from W, gusts 3 mph5 km/h | 92% | 1% | 0 |
| Sun 3a | Clear | 39°4° (likely 39°4° to 43°6°) | 39°4° | 0% | 1 mph2 km/h from E, gusts 3 mph5 km/h | 92% | 0% | 0 |
| Sun 4a | Clear | 38°3° (likely 38°3° to 43°6°) | 38°3° | 0% | 1 mph2 km/h from W, gusts 3 mph5 km/h | 96% | 0% | 0 |
| Sun 5a | Clear | 37°3° (likely 37°3° to 42°6°) | 37°3° | 0% | 1 mph2 km/h from W, gusts 3 mph5 km/h | 96% | 0% | 0 |
| Sun 6a | Clear | 37°3° (likely 37°3° to 42°6°) | 37°3° | 0% | 1 mph2 km/h from N, gusts 3 mph5 km/h | 96% | 0% | 0 |
| Sun 7a | Sunny | 36°2° (likely 36°2° to 41°5°) | 36°2° | 0% | 2 mph3 km/h from N, gusts 3 mph5 km/h | 96% | 1% | 0 |
| Sun 8a | Sunny | 37°3° (likely 37°3° to 41°5°) | 37°3° | 0% | 2 mph3 km/h from N, gusts 3 mph5 km/h | 96% | 1% | 0 |
| Sun 9a | Sunny | 43°6° (likely 43°6° to 46°8°) | 43°6° | 0% | 1 mph2 km/h from N, gusts 3 mph5 km/h | 86% | 1% | 1 |
| Sun 10a | Sunny | 51°11° (likely 51°11° to 53°12°) | 51°11° | 0% | 1 mph2 km/h from SW, gusts 3 mph5 km/h | 71% | 2% | 2 |
| Sun 11a | Sunny | 56°13° (likely 56°13° to 58°14°) | 56°13° | 0% | 0 mph0 km/h, gusts 3 mph4 km/h | 62% | 1% | 3 |
| Sun 12p | Sunny | 60°16° (likely 59°15° to 60°16°) | 60°16° | 0% | 1 mph2 km/h from SW, gusts 4 mph6 km/h | 51% | 2% | 4 |
| Sun 1p | Sunny | 62°17° (likely 61°16° to 62°17°) | 62°17° | 0% | 1 mph2 km/h from S, gusts 4 mph6 km/h | 48% | 2% | 4 |
| Sun 2p | Sunny | 64°18° (likely 62°17° to 64°18°) | 64°18° | 0% | 1 mph2 km/h from S, gusts 3 mph6 km/h | 45% | 2% | 4 |
| Sun 3p | Sunny | 64°18° (likely 62°17° to 64°18°) | 64°18° | 0% | 1 mph2 km/h from S, gusts 4 mph7 km/h | 46% | 2% | 4 |
| Sun 4p | Sunny | 63°17° (likely 62°17° to 64°18°) | 63°17° | 0% | 1 mph2 km/h from S, gusts 5 mph8 km/h | 48% | 1% | 3 |
| Sun 5p | Sunny | 62°17° (likely 61°16° to 63°17°) | 62°17° | 0% | 1 mph2 km/h from S, gusts 5 mph8 km/h | 52% | 0% | 1 |
| Sun 6p | Clear | 58°14° (likely 56°13° to 58°14°) | 58°14° | 0% | 1 mph2 km/h from S, gusts 6 mph10 km/h | 59% | 0% | 0 |
| Sun 7p | Clear | 52°11° (likely 52°11° to 54°12°) | 52°11° | 0% | 1 mph2 km/h from S, gusts 5 mph8 km/h | 71% | 0% | 0 |
| Sun 8p | Clear | 48°9° (likely 48°9° to 51°11°) | 48°9° | 0% | 0 mph0 km/h, gusts 4 mph7 km/h | 80% | 0% | 0 |
| Sun 9p | Clear | 45°7° (likely 45°7° to 50°10°) | 45°7° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 89% | 0% | 0 |
| Sun 10p | Clear | 44°7° (likely 44°7° to 49°9°) | 44°7° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 89% | 0% | 0 |
| Sun 11p | Clear | 42°6° (likely 42°6° to 48°9°) | 42°6° | 0% | 0 mph0 km/h, gusts 3 mph4 km/h | 96% | 0% | 0 |
| Mon 12a | Clear | 42°6° (likely 42°6° to 47°8°) | 42°6° | 0% | 1 mph2 km/h from SW, gusts 3 mph4 km/h | 93% | 0% | 0 |
| Mon 1a | Clear | 41°5° (likely 41°5° to 46°8°) | 41°5° | 0% | 1 mph2 km/h from SW, gusts 2 mph3 km/h | 96% | 2% | 0 |
| Mon 2a | Clear | 41°5° (likely 41°5° to 45°7°) | 41°5° | 0% | 1 mph2 km/h from SW, gusts 2 mph4 km/h | 96% | 2% | 0 |
| Mon 3a | Clear | 40°4° (likely 40°4° to 45°7°) | 40°4° | 0% | 1 mph2 km/h from SW, gusts 3 mph5 km/h | 96% | 0% | 0 |
| Mon 4a | Clear | 39°4° (likely 39°4° to 45°7°) | 39°4° | 0% | 1 mph2 km/h from NW, gusts 3 mph5 km/h | 96% | 0% | 0 |
| Mon 5a | Clear | 38°3° (likely 38°3° to 45°7°) | 38°3° | 0% | 2 mph3 km/h from NW, gusts 5 mph8 km/h | 96% | 6% | 0 |
| Mon 6a | Clear | 38°3° (likely 38°3° to 44°7°) | 38°3° | 0% | 1 mph2 km/h from NW, gusts 5 mph7 km/h | 96% | 10% | 0 |
| Mon 7a | Sunny | 37°3° (likely 37°3° to 44°7°) | 37°3° | 0% | 1 mph2 km/h from NW, gusts 3 mph5 km/h | 96% | 13% | 0 |
| Mon 8a | Sunny | 38°3° (likely 38°3° to 45°7°) | 38°3° | 0% | 1 mph2 km/h from NW, gusts 3 mph5 km/h | 96% | 13% | 0 |
| Mon 9a | Sunny | 43°6° (likely 42°6° to 48°9°) | 43°6° | 0% | 1 mph2 km/h from NW, gusts 3 mph4 km/h | 93% | 15% | 1 |
| Mon 10a | Sunny | 50°10° (likely 50°10° to 54°12°) | 50°10° | 0% | 2 mph3 km/h from NW, gusts 7 mph12 km/h | 83% | 8% | 2 |
| Mon 11a | Sunny | 57°14° (likely 57°14° to 59°15°) | 57°14° | 0% | 3 mph5 km/h from NW, gusts 7 mph12 km/h | 69% | 2% | 3 |
| Mon 12p | Sunny | 60°16° (likely 60°16° to 63°17°) | 60°16° | 0% | 5 mph8 km/h from NW, gusts 8 mph13 km/h | 62% | 0% | 4 |
| Mon 1p | Sunny | 63°17° (likely 63°17° to 66°19°) | 63°17° | 0% | 6 mph10 km/h from NW, gusts 11 mph17 km/h | 56% | 1% | 4 |
| Mon 2p | Sunny | 66°19° (likely 66°19° to 67°19°) | 66°19° | 0% | 6 mph10 km/h from NW, gusts 11 mph18 km/h | 50% | 0% | 4 |
| Mon 3p | Sunny | 67°19° (likely 67°19° to 68°20°) | 67°19° | 0% | 6 mph10 km/h from NW, gusts 13 mph21 km/h | 49% | 4% | 4 |
| Mon 4p | Sunny | 68°20° (likely 66°19° to 68°20°) | 68°20° | 0% | 3 mph5 km/h from NW, gusts 14 mph22 km/h | 49% | 4% | 3 |
Days ahead
Shaded: typical range for these dates (1991–2020)
Today, Oct 24. Sunny. High 63°17°, low 35°2°. Typical 64°18° / 43°6°. Dry. Forecasts agree.
Evening
6 PM–midnight
Clear, 48°9°Dry
Overnight
midnight–6 AM
Clear, 37°3°Dry
Official NWS forecast
Today: Sunny, with a high near 63. South wind around 3 mph.
Tonight: Patchy frost after 5am. Clear, with a low around 35. Southwest wind around 2 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 60°16°–63°17°
- Low, likely
- 35°2°–39°4°
- Typical high / low
- 64°18° / 43°6°
- Wind
- 7 mph12 km/h
- UV peak
- 4
Tomorrow, Oct 25. Sunny. High 64°18°, low 36°2°. Typical 64°18° / 43°6°. Dry. Forecasts agree.
Morning
6 AM–noon
Sunny, 37°3°Dry
Afternoon
noon–6 PM
Sunny, 64°18°Dry
Evening
6 PM–midnight
Clear, 48°9°Dry
Overnight
midnight–6 AM
Clear, 38°3°Dry
Official NWS forecast
Day: Patchy frost before 9am. Sunny, with a high near 64. Southwest wind around 2 mph.
Night: Clear, with a low around 36. Southwest wind around 2 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 62°17°–64°18°
- Low, likely
- 36°2°–40°4°
- Typical high / low
- 64°18° / 43°6°
- Wind
- 5 mph8 km/h
- UV peak
- 4
Monday, Oct 26. Sunny. High 69°21°, low 47°8°. Typical 63°17° / 42°6°. Dry. Forecasts agree.
Morning
6 AM–noon
Sunny, 38°3°Dry
Afternoon
noon–6 PM
Sunny, 68°20°Dry
Evening
6 PM–midnight
Clear, 55°13°Dry
Overnight
midnight–6 AM
Clear, 52°11°Dry
Official NWS forecast
Day: Patchy frost between 7am and 8am. Sunny, with a high near 69. Northwest wind 1 to 6 mph.
Night: Clear, with a low around 47.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 67°19°–69°21°
- Low, likely
- 38°3°–47°8°
- Typical high / low
- 63°17° / 42°6°
- Wind
- 9 mph15 km/h, gusts 15 mph25 km/h
- UV peak
- 4
Tuesday, Oct 27. Mostly sunny. High 66°19°, low 42°6°. Typical 63°17° / 42°6°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 49°10°Dry
Afternoon
noon–6 PM
Sunny, 64°18°Dry
Evening
6 PM–midnight
Clear, 53°11°Dry
Overnight
midnight–6 AM
Clear, 43°6°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 42.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 63°17°–66°19°
- Low, likely
- 42°6°–49°9°
- Typical high / low
- 63°17° / 42°6°
- Wind
- 11 mph18 km/h, gusts 22 mph35 km/h
- UV peak
- 4
Wednesday, Oct 28. Cloudy. High 64°18°, low 46°8°. Typical 62°17° / 42°6°. Dry. Forecasts agree.
Morning
6 AM–noon
Cloudy, 43°6°Dry
Afternoon
noon–6 PM
Cloudy, 61°16°Dry
Evening
6 PM–midnight
Cloudy, 53°12°Dry
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 64.
Night: Mostly cloudy, with a low around 46.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 60°16°–64°18°
- Low, likely
- 39°4°–46°8°
- Typical high / low
- 62°17° / 42°6°
- Wind
- 7 mph11 km/h, gusts 16 mph26 km/h
- UV peak
- 4
Thursday, Oct 29. Partly sunny. High 68°20°, low 49°9°. Typical 62°17° / 42°6°. Dry. Mostly agree.
Morning
6 AM–noon
Cloudy, 48°9°Dry
Afternoon
noon–6 PM
Sunny, 65°19°Dry
Evening
6 PM–midnight
Clear, 55°13°Dry
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 68.
Night: Mostly clear, with a low around 49.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 64°18°–68°20°
- Low, likely
- 45°7°–49°9°
- Typical high / low
- 62°17° / 42°6°
- Wind
- 8 mph14 km/h, gusts 26 mph42 km/h
- UV peak
- 4
Friday, Oct 30. Mostly sunny. High 73°23°, low 49°9°. Typical 62°17° / 41°5°. Dry. Forecasts agree.
Morning
6 AM–noon
Sunny, 49°10°Dry
Afternoon
noon–6 PM
Sunny, 73°23°Dry
Evening
6 PM–midnight
Clear, 59°15°Dry
Overnight
midnight–6 AM
Clear, 49°9°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
- 72°22°–73°23°
- Low, likely
- 46°8°–52°11°
- Typical high / low
- 62°17° / 41°5°
- Wind
- 8 mph13 km/h, gusts 28 mph46 km/h
- UV peak
- 4
Saturday, Oct 31. Cloudy. High 66°19°, low 48°9°. Typical 61°16° / 41°5°. Dry. Forecasts differ.
Morning
6 AM–noon
Mostly sunny, 48°9°Dry
Afternoon
noon–6 PM
Cloudy, 68°20°Dry
Evening
6 PM–midnight
Cloudy, 58°14°Dry
Overnight
midnight–6 AM
Cloudy, 52°11°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
- 61°16°–70°21°
- Low, likely
- 46°8°–51°11°
- Typical high / low
- 61°16° / 41°5°
- Wind
- 8 mph13 km/h, gusts 28 mph45 km/h
- UV peak
- 4
Sunday, Nov 1. Drizzle. High 67°19°, low 52°11°. Typical 61°16° / 40°4°. Rain 0.02 in0.5 mm, 30% chance. Mostly agree.
Morning
6 AM–noon
Partly sunny, 53°12°Dry
Afternoon
noon–6 PM
Cloudy, 67°19°20% chance
Evening
6 PM–midnight
Drizzle, 61°16°30% chance · 0.05 in1.2 mm
Overnight
midnight–6 AM
Drizzle, 61°16°30% chance · 0.09 in2.2 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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 65°18°–72°22°
- Low, likely
- 46°8°–56°13°
- Typical high / low
- 61°16° / 40°4°
- Wind
- 10 mph17 km/h, gusts 25 mph40 km/h
- UV peak
- 2
Monday, Nov 2. Drizzle. High 69°21°, low 60°16°. Typical 60°16° / 40°4°. Rain 0.2 in5.1 mm, 30% chance. Forecasts differ.
Morning
6 AM–noon
Drizzle, 63°17°30% chance · 0.07 in1.7 mm
Afternoon
noon–6 PM
Cloudy, 68°20°20% chance · 0.03 in0.8 mm
Evening
6 PM–midnight
Cloudy, 65°18°20% chance · 0.03 in0.6 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
- 64°18°–74°23°
- Low, likely
- 57°14°–67°19°
- Typical high / low
- 60°16° / 40°4°
- Wind
- 16 mph26 km/h, gusts 37 mph59 km/h
The outlook
Today
Dry, high 63°, low 35°.
Tomorrow
Dry, high 64°, low 36°.
Monday
Dry, high 69°, low 47°, warming up.
Rest of week
Mostly dry, highs 64–73°.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (LWX) (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
Rivers
NOAA river gauges within 25 mi
Below flood stage
Deer Creek (MD) near Darlington
1.8 mi- Level
- 1.2 ft
- Flow
- 73 cfs
Reading from Sat 4:15 PM · NWS gauge page
Susquehanna River at Conowingo Dam
1.9 mi- Level
- 10.8 ft
- Flow
- 12,900 cfs
Reading from Sat 4:35 PM · NWS gauge page
Octoraro Creek near Richardsmere
6.4 mi- Level
- 2.8 ft
- Flow
- 96 cfs
Reading from Sat 4:45 PM · NWS gauge page
For your home
What this week’s weather means for heating, cooling, pipes and fresh air.
Heating this week
About 63% less heating than a typical week.
This week 33Typical 88
Heating degree days, base 65°F
Heat-pump hours, next 7 days
- h below 47°F
- 26
- 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 19 hours are near freezing and damp, when outdoor units defrost more often.
Comfort
Dry air outside (dew point 37°F).
Open the windows?
Sun, 12:00 PM–5:00 PM
Good stretch to open the windows.
Is this typical?
ABERDEEN PHILLIPS FLD · official normals 1991–2020 · records 1919–2026
Oct 24, today vs a typical year
Today’s expected high is about typical for the date.
- Normal high / low
- 64°18° / 43°6°
- Forecast high / low
- 63°17° / 35°2°
- Record high
- 80°27° in 1978
- Record low
- 21°−6° in 1969
Last 7 days vs normal
On average 1° colder than normal (daily mean temperature).
- −8°−5°SunOct 18
- −6°−4°MonOct 19
- −1°TueOct 20
- +6°+3°WedOct 21
- +2°+1°ThuOct 22
- +3°+2°FriOct 23
- —SatOct 24
Darlington weather by month: normals, records, snow and freeze dates
Sun & moon
Sun
Sunrise 7:24 AM, sunset 6:12 PM.
- Daylight
- 10 h 48 min
- Losing 2 min 25 s a day; shortest Dec 21, 1 h 26 min less
- Golden hour
- 5:35–6:29 PM
- Morning 7:07–8:01 AM
- Blue hour
- 6:29–6:40 PM
- Morning 6:57–7:07 AM; first light 6:57 AM
Stars tonight? Fair
Clear 6:40 PM–6:58 AM, but the moon is 99% lit and up.
Moon
Waxing gibbous
98% lit · growing
- Today
- sets 5:36 AM · rises 5:09 PM
- Full moon
- Oct 26
- New moon
- Nov 9
