Potomac River at Harpers Ferry
4.3 mi- Level
- 1.4 ft
- Flow
- 2,700 cfs
Forecast peak 1.1 ft Tue 8 AM
Reading from Sat 7:45 PM · NWS gauge page
Observed 8:55 PM EDT at KMRB
Yarrowsburg, MD weather
Clear and 45°7°.
Today: low 35°2° (likely 35°2° to 38°3°), high 60°16° (likely 60°16° to 61°16°).
Now 45°7°
Clear
- Wind
- Calm
- Light through 9 AM
- Dew point
- 37°3°
- Comfortable
- UV tomorrow
- 4Moderate
- Moderate 11 AM–5 PM · peak 4
- Air quality
- 17Good
- Ozone · tomorrow moderate
- Pressure
- 30.53 inHg1034 hPa
- Rising slowly · +0.03 inHg+1.1 hPa in 3 h
Next 2 hours
No precipitation expected in the next 2 hours.
From forecast models
Next 48 hours
3°2° cooler than this time yesterday (50°10° then, 47°8° now)
Good hours for
TonightDown to 38°3° by 5 AM · Clear
Tomorrow morningUp to 51°11° by 11 AM · Clear
Tomorrow afternoonUp to 62°17° by 3 PM · Clear
Tomorrow nightDown to 41°5° by 5 AM · Clear
Monday morningUp to 53°12° by 11 AM · Clear
Monday afternoonUp to 68°20° by 4 PM · Clear
Monday nightDown to 58°14° by 8 PM · Clear
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 9p | Clear | 48°9° (likely 47°8° to 53°12°) | 47°8° | 0% | 3 mph5 km/h from E, gusts 4 mph7 km/h | 68% | 53% | 0 |
| Sat 10p | Clear | 46°8° (likely 45°7° to 52°11°) | 45°7° | 0% | 3 mph5 km/h from SE, gusts 4 mph6 km/h | 73% | 35% | 0 |
| Sat 11p | Clear | 44°7° (likely 43°6° to 49°9°) | 42°6° | 0% | 3 mph5 km/h from SE, gusts 5 mph7 km/h | 82% | 12% | 0 |
| Sun 12a | Clear | 43°6° (likely 42°6° to 49°9°) | 41°5° | 0% | 3 mph5 km/h from SE, gusts 4 mph6 km/h | 86% | 0% | 0 |
| Sun 1a | Clear | 43°6° (likely 41°5° to 48°9°) | 41°5° | 0% | 3 mph5 km/h from SE, gusts 3 mph5 km/h | 82% | 11% | 0 |
| Sun 2a | Clear | 40°4° (likely 40°4° to 46°8°) | 38°3° | 0% | 3 mph5 km/h from SE, gusts 2 mph3 km/h | 92% | 13% | 0 |
| Sun 3a | Clear | 40°4° (likely 40°4° to 46°8°) | 40°4° | 0% | 2 mph3 km/h from SE, gusts 2 mph3 km/h | 92% | 12% | 0 |
| Sun 4a | Clear | 39°4° (likely 39°4° to 45°7°) | 39°4° | 0% | 2 mph3 km/h from SE, gusts 3 mph4 km/h | 92% | 10% | 0 |
| Sun 5a | Clear | 38°3° (likely 38°3° to 43°6°) | 38°3° | 0% | 2 mph3 km/h from SE, gusts 3 mph5 km/h | 96% | 8% | 0 |
| Sun 6a | Clear | 38°3° (likely 38°3° to 43°6°) | 38°3° | 0% | 2 mph3 km/h from SE, gusts 2 mph4 km/h | 92% | 9% | 0 |
| Sun 7a | Clear | 38°3° (likely 38°3° to 43°6°) | 38°3° | 0% | 2 mph3 km/h from SE, gusts 2 mph4 km/h | 92% | 10% | 0 |
| Sun 8a | Sunny | 37°3° (likely 37°3° to 43°6°) | 37°3° | 0% | 2 mph3 km/h from S, gusts 2 mph3 km/h | 96% | 14% | 0 |
| Sun 9a | Sunny | 41°5° (likely 41°5° to 47°8°) | 41°5° | 0% | 2 mph3 km/h from SW, gusts 2 mph4 km/h | 92% | 13% | 1 |
| Sun 10a | Sunny | 47°8° (likely 47°8° to 52°11°) | 47°8° | 0% | 1 mph2 km/h from S, gusts 4 mph6 km/h | 83% | 3% | 2 |
| Sun 11a | Sunny | 51°11° (likely 51°11° to 56°13°) | 51°11° | 0% | 1 mph2 km/h from SW, gusts 6 mph10 km/h | 74% | 3% | 3 |
| Sun 12p | Sunny | 54°12° (likely 54°12° to 59°15°) | 54°12° | 0% | 2 mph3 km/h from S, gusts 8 mph13 km/h | 66% | 2% | 4 |
| Sun 1p | Sunny | 57°14° (likely 57°14° to 61°16°) | 57°14° | 0% | 2 mph3 km/h from S, gusts 9 mph15 km/h | 59% | 8% | 4 |
| Sun 2p | Sunny | 61°16° (likely 61°16° to 62°17°) | 61°16° | 0% | 3 mph5 km/h from S, gusts 7 mph12 km/h | 51% | 9% | 4 |
| Sun 3p | Sunny | 62°17° (likely 62°17° to 63°17°) | 62°17° | 0% | 3 mph5 km/h from S, gusts 7 mph11 km/h | 50% | 4% | 4 |
| Sun 4p | Sunny | 61°16° (likely 61°16° to 63°17°) | 61°16° | 0% | 3 mph5 km/h from S, gusts 7 mph12 km/h | 51% | 8% | 3 |
| Sun 5p | Sunny | 61°16° (likely 61°16° to 62°17°) | 61°16° | 0% | 3 mph5 km/h from S, gusts 7 mph11 km/h | 51% | 5% | 1 |
| Sun 6p | Clear | 59°15° (likely 57°14° to 59°15°) | 59°15° | 0% | 2 mph3 km/h from S, gusts 6 mph10 km/h | 55% | 1% | 0 |
| Sun 7p | Clear | 55°13° (likely 53°12° to 55°13°) | 55°13° | 0% | 2 mph3 km/h from SE, gusts 5 mph7 km/h | 64% | 0% | 0 |
| Sun 8p | Clear | 52°11° (likely 51°11° to 54°12°) | 52°11° | 0% | 2 mph3 km/h from SE, gusts 4 mph6 km/h | 71% | 0% | 0 |
| Sun 9p | Clear | 50°10° (likely 49°9° to 52°11°) | 50°10° | 0% | 2 mph3 km/h from SE, gusts 4 mph6 km/h | 77% | 0% | 0 |
| Sun 10p | Clear | 48°9° (likely 48°9° to 51°11°) | 48°9° | 0% | 1 mph2 km/h from SE, gusts 3 mph4 km/h | 80% | 0% | 0 |
| Sun 11p | Clear | 46°8° (likely 46°8° to 51°11°) | 46°8° | 0% | 1 mph2 km/h from S, gusts 2 mph4 km/h | 86% | 0% | 0 |
| Mon 12a | Clear | 45°7° (likely 45°7° to 49°9°) | 45°7° | 0% | 2 mph3 km/h from S, gusts 3 mph4 km/h | 86% | 4% | 0 |
| Mon 1a | Clear | 44°7° (likely 44°7° to 48°9°) | 44°7° | 0% | 1 mph2 km/h from S, gusts 2 mph4 km/h | 89% | 2% | 0 |
| Mon 2a | Clear | 43°6° (likely 43°6° to 48°9°) | 43°6° | 0% | 2 mph3 km/h from SW, gusts 4 mph6 km/h | 96% | 2% | 0 |
| Mon 3a | Clear | 42°6° (likely 41°5° to 48°9°) | 42°6° | 0% | 2 mph3 km/h from W, gusts 4 mph7 km/h | 96% | 14% | 0 |
| Mon 4a | Clear | 42°6° (likely 40°4° to 47°8°) | 42°6° | 0% | 2 mph3 km/h from W, gusts 6 mph9 km/h | 93% | 13% | 0 |
| Mon 5a | Clear | 41°5° (likely 39°4° to 47°8°) | 41°5° | 0% | 2 mph3 km/h from W, gusts 7 mph11 km/h | 96% | 13% | 0 |
| Mon 6a | Mostly clear | 40°4° (likely 38°3° to 46°8°) | 40°4° | 0% | 2 mph3 km/h from W, gusts 7 mph12 km/h | 96% | 23% | 0 |
| Mon 7a | Partly cloudy | 40°4° (likely 38°3° to 46°8°) | 40°4° | 0% | 2 mph3 km/h from W, gusts 8 mph13 km/h | 96% | 33% | 0 |
| Mon 8a | Sunny | 40°4° (likely 39°4° to 46°8°) | 40°4° | 0% | 2 mph3 km/h from W, gusts 9 mph14 km/h | 92% | 35% | 0 |
| Mon 9a | Sunny | 43°6° (likely 43°6° to 50°10°) | 41°5° | 0% | 3 mph5 km/h from W, gusts 9 mph15 km/h | 89% | 29% | 1 |
| Mon 10a | Mostly sunny | 48°9° (likely 48°9° to 55°13°) | 47°8° | 0% | 3 mph5 km/h from W, gusts 11 mph18 km/h | 77% | 9% | 2 |
| Mon 11a | Sunny | 53°12° (likely 53°12° to 59°15°) | 53°12° | 0% | 3 mph5 km/h from W, gusts 11 mph17 km/h | 66% | 6% | 3 |
| Mon 12p | Sunny | 57°14° (likely 57°14° to 62°17°) | 57°14° | 0% | 3 mph5 km/h from NW, gusts 10 mph15 km/h | 59% | 0% | 4 |
| Mon 1p | Sunny | 61°16° (likely 61°16° to 65°18°) | 61°16° | 0% | 5 mph8 km/h from NW, gusts 10 mph16 km/h | 51% | 0% | 4 |
| Mon 2p | Sunny | 65°18° (likely 64°18° to 67°19°) | 65°18° | 0% | 6 mph10 km/h from NW, gusts 10 mph16 km/h | 48% | 0% | 4 |
| Mon 3p | Sunny | 66°19° (likely 64°18° to 68°20°) | 66°19° | 0% | 7 mph11 km/h from NW, gusts 11 mph18 km/h | 48% | 0% | 4 |
| Mon 4p | Sunny | 68°20° (likely 64°18° to 68°20°) | 68°20° | 0% | 5 mph8 km/h from NW, gusts 10 mph16 km/h | 45% | 1% | 3 |
| Mon 5p | Sunny | 68°20° (likely 63°17° to 68°20°) | 68°20° | 0% | 3 mph5 km/h from NW, gusts 6 mph9 km/h | 45% | 0% | 1 |
| Mon 6p | Clear | 65°18° (likely 59°15° to 65°18°) | 65°18° | 0% | 2 mph3 km/h from NW, gusts 4 mph6 km/h | 50% | 0% | 0 |
| Mon 7p | Clear | 61°16° (likely 54°12° to 61°16°) | 61°16° | 0% | 1 mph2 km/h from NW, gusts 3 mph4 km/h | 58% | 0% | 0 |
| Mon 8p | Clear | 58°14° (likely 52°11° to 58°14°) | 58°14° | 0% | 1 mph2 km/h from NW, gusts 3 mph5 km/h | 64% | 0% | 0 |
Days ahead
Tap a day for its hours and the official wording.
Today, Oct 24. Cloudy. High 60°16°, low 35°2°. Dry. Forecasts agree.
Evening
6 PM–midnight
Clear, 44°7°Dry
Overnight
midnight–6 AM
Clear, 38°3°Dry
Official NWS forecast
Tonight: Mostly clear, with a low around 35. Southeast wind around 3 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 60°16°–61°16°
- Low, likely
- 35°2°–38°3°
- Wind
- 7 mph11 km/h, gusts 15 mph24 km/h
- UV peak
- 4
Tomorrow, Oct 25. Sunny. High 62°17°, low 39°4°. Dry. Forecasts agree.
Morning
6 AM–noon
Sunny, 37°3°Dry
Afternoon
noon–6 PM
Sunny, 62°17°Dry
Evening
6 PM–midnight
Clear, 52°11°Dry
Overnight
midnight–6 AM
Clear, 41°5°Dry
Official NWS forecast
Day: Patchy frost between 8am and 9am. Sunny, with a high near 62. South wind around 3 mph.
Night: Mostly clear, with a low around 39. Southwest wind around 2 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 62°17°–63°17°
- Low, likely
- 38°3°–43°6°
- Wind
- 6 mph10 km/h, gusts 13 mph21 km/h
- UV peak
- 4
Monday, Oct 26. Mostly sunny. High 68°20°, low 44°7°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 40°4°Dry
Afternoon
noon–6 PM
Sunny, 68°20°Dry
Evening
6 PM–midnight
Clear, 58°14°Dry
Overnight
midnight–6 AM
Clear, 46°8°Dry
Official NWS forecast
Day: Sunny, with a high near 68. Northwest wind 2 to 7 mph.
Night: Mostly clear, with a low around 44. Northwest wind around 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 65°18°–68°20°
- Low, likely
- 38°3°–44°7°
- Wind
- 9 mph15 km/h
- UV peak
- 4
Tuesday, Oct 27. Mostly sunny. High 66°19°, low 42°6°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 45°7°Dry
Afternoon
noon–6 PM
Partly sunny, 64°18°Dry
Evening
6 PM–midnight
Partly cloudy, 54°12°Dry
Overnight
midnight–6 AM
Cloudy, 44°7°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 66.
Night: Partly cloudy, with a low around 42.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 63°17°–67°19°
- Low, likely
- 42°6°–47°8°
- Wind
- 6 mph10 km/h, gusts 16 mph26 km/h
- UV peak
- 4
Wednesday, Oct 28. Cloudy. High 63°17°, low 45°7°. Dry. Mostly agree.
Morning
6 AM–noon
Cloudy, 44°7°Dry
Afternoon
noon–6 PM
Cloudy, 62°17°Dry
Evening
6 PM–midnight
Cloudy, 54°12°Dry
Overnight
midnight–6 AM
Partly cloudy, 47°8°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 63.
Night: Mostly cloudy, with a low around 45.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 61°16°–64°18°
- Low, likely
- 41°5°–47°8°
- Wind
- 9 mph15 km/h, gusts 17 mph27 km/h
- UV peak
- 3
Thursday, Oct 29. Partly sunny. High 69°21°, low 47°8°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 46°8°Dry
Afternoon
noon–6 PM
Sunny, 68°20°Dry
Evening
6 PM–midnight
Clear, 56°13°Dry
Overnight
midnight–6 AM
Clear, 47°9°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 69.
Night: Mostly clear, with a low around 47.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 67°19°–70°21°
- Low, likely
- 44°7°–48°9°
- Wind
- 7 mph11 km/h, gusts 20 mph32 km/h
- UV peak
- 4
Friday, Oct 30. Mostly sunny. High 73°23°, low 48°9°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 47°8°Dry
Afternoon
noon–6 PM
Sunny, 73°23°Dry
Evening
6 PM–midnight
Clear, 60°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 48.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 71°22°–75°24°
- Low, likely
- 44°7°–48°9°
- Wind
- 7 mph11 km/h, gusts 18 mph29 km/h
- UV peak
- 4
Saturday, Oct 31. Partly sunny. High 71°22°, low 47°8°. Dry. Forecasts differ.
Morning
6 AM–noon
Cloudy, 47°8°Dry
Afternoon
noon–6 PM
Cloudy, 69°21°Dry
Evening
6 PM–midnight
Cloudy, 58°14°Dry
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°–71°22°
- Low, likely
- 44°7°–52°11°
- Wind
- 8 mph13 km/h, gusts 16 mph26 km/h
- UV peak
- 3
Sunday, Nov 1. Drizzle. High 68°20°, low 52°11°. Rain 0.04 in1 mm, 30% chance. Mostly agree.
Morning
6 AM–noon
Cloudy, 54°12°20% chance
Afternoon
noon–6 PM
Cloudy, 68°20°30% chance · 0.02 in0.4 mm
Evening
6 PM–midnight
Drizzle, 64°18°30% chance · 0.13 in3.2 mm
Overnight
midnight–6 AM
Drizzle, 60°15°30% chance · 0.1 in2.6 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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 65°18°–71°22°
- Low, likely
- 50°10°–53°12°
- Wind
- 13 mph22 km/h, gusts 29 mph47 km/h
- UV peak
- 3
Monday, Nov 2. Drizzle. High 72°22°, low 57°14°. Rain 0.74 in19 mm, 30% chance. Forecasts agree.
Morning
6 AM–noon
Drizzle, 61°16°30% chance · 0.03 in0.8 mm
Afternoon
noon–6 PM
Cloudy, 72°22°20% chance · 0.1 in2.6 mm
Evening
6 PM–midnight
Clear, 61°16°30% chance · 0.63 in16 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 agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 71°22°–73°23°
- Low, likely
- 54°12°–63°17°
- Wind
- 17 mph27 km/h, gusts 39 mph62 km/h
- UV peak
- 3
The outlook
Today
Dry, high 60°, low 35°.
Tomorrow
Dry, high 62°, low 39°.
Monday
Dry, high 68°, low 44°, warming up.
Rest of week
Mostly dry, highs 63–73°.
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
Antietam Creek near Sharpsburg
5.6 mi- Level
- 2.3 ft
- Flow
- 98 cfs
Forecast peak 2.3 ft Sun 2 AM
Reading from Sat 7:15 PM · NWS gauge page
Potomac River at Shepherdstown
7.4 mi- Level
- 2.6 ft
- Flow
- 2,380 cfs
Forecast peak 2.4 ft Sun 2 AM
Reading from Sat 7:30 PM · NWS gauge page
Shenandoah River at Millville
8.6 mi- Level
- 1.9 ft
- Flow
- 866 cfs
Forecast peak 2.0 ft Sun 2 PM
Reading from Sat 7:30 PM · NWS gauge page
Sun & moon
Sun
Sunrise 7:30 AM, sunset 6:19 PM.
- Daylight
- 10 h 49 min
- Losing 2 min 25 s a day; shortest Dec 21, 1 h 26 min less
- Golden hour
- 5:41–6:35 PM
- Morning 7:13–8:07 AM
- Blue hour
- 6:35–6:46 PM
- Morning 7:02–7:13 AM; first light 7:02 AM
Stars tonight? Fair
Mostly clear 11 PM–7:03 AM, but the moon is 99% lit and up.
Moon
Waxing gibbous
98% lit · growing
- Today
- sets 5:42 AM · rises 5:15 PM
- Full moon
- Oct 26
- New moon
- Nov 9
