Deer Creek (MD) at Rocks State Park
4.2 mi- Level
- 2.0 ft
- Flow
- 42 cfs
Reading from Sat 7:15 PM · NWS gauge page
1 active weather alert
Frost Advisory
Starts in 3 h 51 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 7:45 PM EDT at KMTN
Jarrettsville, MD weather
Clear and 50°10°.
Today: low 36°2° (likely 35°2° to 38°3°), high 60°16° (likely 59°15° to 61°16°).
Now 50°10°
Clear
- Wind
- Calm
- Light through 9 AM
- Dew point
- 45°7°
- Comfortable · down to 36°2° by 2 AM
- UV tomorrow
- 4Moderate
- Moderate 11 AM–5 PM · peak 4
- Air quality
- 54Moderate
- Main pollutant: PM2.5 (fine particles)
- Pressure
- 30.56 inHg1035 hPa
- Rising slowly · +0.02 inHg+0.7 hPa in 3 h
Next 2 hours
No precipitation expected in the next 2 hours.
From forecast models
Next 48 hours
Good hours for
TonightDown to 38°3° by 5 AM · Clear
Tomorrow morningUp to 56°13° by 11 AM · Clear
Tomorrow afternoonUp to 64°18° by 3 PM · Clear
Tomorrow nightDown to 40°4° by 4 AM · Clear
Monday morningUp to 59°15° by 11 AM · Clear
Monday afternoonUp to 67°19° by 2 PM · Clear
Monday nightDown to 54°12° by 8 PM · Clear
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 9p | Clear | 46°8° (likely 46°8° to 49°9°) | 46°8° | 0% | 1 mph2 km/h from S, gusts 3 mph5 km/h | 71% | 0% | 0 |
| Sat 10p | Clear | 45°7° (likely 45°7° to 48°9°) | 45°7° | 0% | 1 mph2 km/h from S, gusts 4 mph7 km/h | 73% | 0% | 0 |
| Sat 11p | Clear | 44°7° (likely 44°7° to 47°8°) | 44°7° | 0% | 1 mph2 km/h from S, gusts 4 mph6 km/h | 76% | 0% | 0 |
| Sun 12a | Clear | 43°6° (likely 42°6° to 47°8°) | 43°6° | 0% | 2 mph3 km/h from S, gusts 4 mph6 km/h | 79% | 0% | 0 |
| Sun 1a | Clear | 42°6° (likely 42°6° to 46°8°) | 42°6° | 0% | 1 mph2 km/h from S, gusts 3 mph5 km/h | 82% | 0% | 0 |
| Sun 2a | Clear | 41°5° (likely 41°5° to 45°7°) | 41°5° | 0% | 1 mph2 km/h from SW, gusts 3 mph5 km/h | 82% | 0% | 0 |
| Sun 3a | Clear | 40°4° (likely 40°4° to 44°7°) | 40°4° | 0% | 1 mph2 km/h from W, gusts 3 mph5 km/h | 85% | 0% | 0 |
| Sun 4a | Clear | 39°4° (likely 39°4° to 43°6°) | 39°4° | 0% | 1 mph2 km/h from SE, gusts 3 mph5 km/h | 89% | 0% | 0 |
| Sun 5a | Clear | 38°3° (likely 38°3° to 43°6°) | 38°3° | 0% | 1 mph2 km/h from N, gusts 3 mph4 km/h | 92% | 0% | 0 |
| Sun 6a | Clear | 38°3° (likely 37°3° to 43°6°) | 38°3° | 0% | 1 mph2 km/h from N, gusts 4 mph6 km/h | 92% | 0% | 0 |
| Sun 7a | Sunny | 38°3° (likely 36°2° to 42°6°) | 38°3° | 0% | 2 mph3 km/h from N, gusts 4 mph6 km/h | 92% | 0% | 0 |
| Sun 8a | Sunny | 38°3° (likely 37°3° to 42°6°) | 38°3° | 0% | 2 mph3 km/h from N, gusts 4 mph6 km/h | 96% | 0% | 0 |
| Sun 9a | Sunny | 44°7° (likely 41°5° to 46°8°) | 44°7° | 0% | 2 mph3 km/h from N, gusts 3 mph5 km/h | 82% | 0% | 1 |
| Sun 10a | Sunny | 51°11° (likely 51°11° to 53°12°) | 51°11° | 0% | 1 mph2 km/h from NE, gusts 3 mph4 km/h | 68% | 0% | 2 |
| Sun 11a | Sunny | 56°13° (likely 56°13° to 58°14°) | 56°13° | 0% | 1 mph2 km/h from S, gusts 4 mph7 km/h | 59% | 1% | 3 |
| Sun 12p | Sunny | 59°15° (likely 59°15° to 61°16°) | 59°15° | 0% | 1 mph2 km/h from E, gusts 5 mph9 km/h | 53% | 1% | 4 |
| Sun 1p | Sunny | 62°17° (likely 61°16° to 62°17°) | 62°17° | 0% | 1 mph2 km/h from S, gusts 5 mph9 km/h | 48% | 2% | 4 |
| Sun 2p | Sunny | 63°17° (likely 62°17° to 63°17°) | 63°17° | 0% | 1 mph2 km/h from S, gusts 5 mph8 km/h | 46% | 4% | 4 |
| Sun 3p | Sunny | 64°18° (likely 62°17° to 64°18°) | 64°18° | 0% | 1 mph2 km/h from S, gusts 5 mph9 km/h | 45% | 5% | 4 |
| Sun 4p | Sunny | 63°17° (likely 62°17° to 64°18°) | 63°17° | 0% | 1 mph2 km/h from S, gusts 6 mph10 km/h | 48% | 5% | 3 |
| Sun 5p | Sunny | 62°17° (likely 61°16° to 63°17°) | 62°17° | 0% | 2 mph3 km/h from S, gusts 7 mph11 km/h | 50% | 2% | 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 | 57% | 0% | 0 |
| Sun 7p | Clear | 54°12° (likely 52°11° to 54°12°) | 54°12° | 0% | 2 mph3 km/h from S, gusts 6 mph10 km/h | 64% | 0% | 0 |
| Sun 8p | Clear | 49°9° (likely 49°9° to 50°10°) | 49°9° | 0% | 2 mph3 km/h from SW, gusts 6 mph10 km/h | 77% | 0% | 0 |
| Sun 9p | Clear | 47°8° (likely 47°8° to 49°9°) | 47°8° | 0% | 1 mph2 km/h from S, gusts 7 mph11 km/h | 83% | 0% | 0 |
| Sun 10p | Clear | 45°7° (likely 45°7° to 49°9°) | 45°7° | 0% | 2 mph3 km/h from W, gusts 6 mph10 km/h | 89% | 0% | 0 |
| Sun 11p | Clear | 44°7° (likely 44°7° to 48°9°) | 44°7° | 0% | 2 mph3 km/h from W, gusts 5 mph9 km/h | 93% | 0% | 0 |
| Mon 12a | Clear | 44°7° (likely 44°7° to 48°9°) | 44°7° | 0% | 2 mph3 km/h from W, gusts 6 mph9 km/h | 93% | 0% | 0 |
| Mon 1a | Clear | 42°6° (likely 42°6° to 47°8°) | 42°6° | 0% | 2 mph3 km/h from W, gusts 6 mph10 km/h | 96% | 3% | 0 |
| Mon 2a | Clear | 42°6° (likely 42°6° to 47°8°) | 40°4° | 0% | 3 mph5 km/h from W, gusts 7 mph11 km/h | 93% | 8% | 0 |
| Mon 3a | Clear | 41°5° (likely 41°5° to 46°8°) | 39°4° | 0% | 3 mph5 km/h from W, gusts 7 mph11 km/h | 96% | 0% | 0 |
| Mon 4a | Clear | 40°4° (likely 40°4° to 45°7°) | 38°3° | 0% | 3 mph5 km/h from W, gusts 7 mph11 km/h | 100% | 0% | 0 |
| Mon 5a | Clear | 40°4° (likely 40°4° to 45°7°) | 38°3° | 0% | 3 mph5 km/h from W, gusts 8 mph13 km/h | 100% | 0% | 0 |
| Mon 6a | Clear | 39°4° (likely 39°4° to 45°7°) | 37°3° | 0% | 3 mph5 km/h from W, gusts 9 mph15 km/h | 100% | 4% | 0 |
| Mon 7a | Sunny | 39°4° (likely 39°4° to 45°7°) | 37°3° | 0% | 3 mph5 km/h from W, gusts 9 mph15 km/h | 96% | 11% | 0 |
| Mon 8a | Sunny | 40°4° (likely 38°3° to 46°8°) | 37°3° | 0% | 5 mph8 km/h from W, gusts 10 mph16 km/h | 96% | 12% | 0 |
| Mon 9a | Sunny | 46°8° (likely 44°7° to 51°11°) | 45°7° | 0% | 3 mph5 km/h from W, gusts 9 mph15 km/h | 89% | 16% | 1 |
| Mon 10a | Sunny | 52°11° (likely 52°11° to 56°13°) | 52°11° | 0% | 3 mph5 km/h from W, gusts 10 mph16 km/h | 77% | 11% | 2 |
| Mon 11a | Sunny | 59°15° (likely 59°15° to 61°16°) | 59°15° | 0% | 5 mph8 km/h from NW, gusts 9 mph14 km/h | 64% | 4% | 3 |
| Mon 12p | Sunny | 63°17° (likely 63°17° to 64°18°) | 63°17° | 0% | 5 mph8 km/h from NW, gusts 10 mph16 km/h | 54% | 2% | 4 |
| Mon 1p | Sunny | 66°19° (likely 65°18° to 66°19°) | 66°19° | 0% | 6 mph10 km/h from NW, gusts 11 mph17 km/h | 48% | 1% | 4 |
| Mon 2p | Sunny | 67°19° (likely 66°19° to 67°19°) | 67°19° | 0% | 7 mph11 km/h from NW, gusts 11 mph18 km/h | 47% | 0% | 4 |
| Mon 3p | Sunny | 67°19° (likely 66°19° to 68°20°) | 67°19° | 0% | 7 mph11 km/h from NW, gusts 12 mph20 km/h | 47% | 0% | 4 |
| Mon 4p | Sunny | 67°19° (likely 66°19° to 68°20°) | 67°19° | 0% | 5 mph8 km/h from NW, gusts 12 mph20 km/h | 50% | 0% | 3 |
| Mon 5p | Sunny | 66°19° (likely 65°18° to 67°19°) | 66°19° | 0% | 5 mph8 km/h from NW, gusts 12 mph19 km/h | 54% | 0% | 1 |
| Mon 6p | Clear | 63°17° (likely 59°15° to 63°17°) | 63°17° | 0% | 5 mph8 km/h from NW, gusts 7 mph11 km/h | 60% | 0% | 0 |
| Mon 7p | Clear | 58°14° (likely 55°13° to 58°14°) | 58°14° | 0% | 3 mph5 km/h from NW, gusts 5 mph8 km/h | 69% | 1% | 0 |
| Mon 8p | Clear | 54°12° (likely 52°11° to 55°13°) | 54°12° | 0% | 3 mph5 km/h from NW, gusts 6 mph9 km/h | 80% | 0% | 0 |
Days ahead
Tap a day for its hours and the official wording.
Today, Oct 24. Partly sunny. High 60°16°, low 36°2°. Dry. Forecasts agree.
Evening
6 PM–midnight
Clear, 44°7°Dry
Overnight
midnight–6 AM
Clear, 38°3°Dry
Official NWS forecast
Tonight: Clear, with a low around 36. South wind around 2 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 59°15°–61°16°
- Low, likely
- 35°2°–38°3°
- Wind
- 7 mph12 km/h
- UV peak
- 4
Tomorrow, Oct 25. Sunny. High 64°18°, low 38°3°. Dry. Forecasts agree.
Morning
6 AM–noon
Sunny, 38°3°Dry
Afternoon
noon–6 PM
Sunny, 64°18°Dry
Evening
6 PM–midnight
Clear, 49°9°Dry
Overnight
midnight–6 AM
Clear, 40°4°Dry
Official NWS forecast
Day: Sunny, with a high near 64. East wind around 2 mph.
Night: Clear, with a low around 38. West wind around 3 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 62°17°–64°18°
- Low, likely
- 36°2°–42°6°
- Wind
- 7 mph10 km/h
- UV peak
- 4
Monday, Oct 26. Mostly sunny. High 68°20°, low 48°9°. Dry. Forecasts agree.
Morning
6 AM–noon
Sunny, 40°4°Dry
Afternoon
noon–6 PM
Sunny, 67°19°Dry
Evening
6 PM–midnight
Clear, 54°12°Dry
Overnight
midnight–6 AM
Clear, 51°11°Dry
Official NWS forecast
Day: Sunny, with a high near 68. Northwest wind 3 to 7 mph.
Night: Mostly clear, with a low around 48. Northwest wind 3 to 7 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 67°19°–68°20°
- Low, likely
- 38°3°–48°9°
- Wind
- 8 mph13 km/h, gusts 18 mph29 km/h
- UV peak
- 4
Tuesday, Oct 27. Mostly sunny. High 65°18°, low 43°6°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 50°10°Dry
Afternoon
noon–6 PM
Sunny, 63°17°Dry
Evening
6 PM–midnight
Clear, 51°11°Dry
Overnight
midnight–6 AM
Cloudy, 43°6°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 65.
Night: Mostly clear, with a low around 43.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 61°16°–65°18°
- Low, likely
- 43°6°–49°9°
- Wind
- 12 mph19 km/h, gusts 23 mph36 km/h
- UV peak
- 4
Wednesday, Oct 28. Cloudy. High 63°17°, low 47°8°. Dry. Forecasts agree.
Morning
6 AM–noon
Partly sunny, 43°6°Dry
Afternoon
noon–6 PM
Cloudy, 60°16°Dry
Evening
6 PM–midnight
Cloudy, 52°11°Dry
Overnight
midnight–6 AM
Mostly clear, 47°8°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 63.
Night: Mostly cloudy, with a low around 47.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 59°15°–63°17°
- Low, likely
- 39°4°–47°8°
- Wind
- 7 mph11 km/h, gusts 16 mph26 km/h
- UV peak
- 4
Thursday, Oct 29. Partly sunny. High 68°20°, low 50°10°. Dry. Forecasts agree.
Morning
6 AM–noon
Cloudy, 47°8°Dry
Afternoon
noon–6 PM
Sunny, 66°19°Dry
Evening
6 PM–midnight
Clear, 55°13°Dry
Overnight
midnight–6 AM
Clear, 49°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 50.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 65°18°–68°20°
- Low, likely
- 44°7°–50°10°
- Wind
- 8 mph12 km/h, gusts 25 mph40 km/h
- UV peak
- 4
Friday, Oct 30. Mostly sunny. High 73°23°, low 50°10°. Dry. Forecasts agree.
Morning
6 AM–noon
Sunny, 49°10°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 50.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 72°22°–74°23°
- Low, likely
- 44°7°–52°11°
- Wind
- 9 mph14 km/h, gusts 16 mph26 km/h
- UV peak
- 4
Saturday, Oct 31. Partly sunny. High 69°21°, low 49°9°. Dry. Forecasts differ.
Morning
6 AM–noon
Sunny, 48°9°Dry
Afternoon
noon–6 PM
Cloudy, 68°20°Dry
Evening
6 PM–midnight
Cloudy, 56°14°Dry
Overnight
midnight–6 AM
Cloudy, 51°10°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 69.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 62°17°–69°21°
- Low, likely
- 45°7°–52°11°
- Wind
- 11 mph17 km/h, gusts 20 mph31 km/h
- UV peak
- 3
Sunday, Nov 1. Cloudy. High 68°20°, low 50°10°. Rain 0.01 in0.3 mm, 30% chance. Mostly agree.
Morning
6 AM–noon
Cloudy, 52°11°Dry
Afternoon
noon–6 PM
Cloudy, 67°19°20% chance
Evening
6 PM–midnight
Drizzle, 61°16°30% chance · 0.04 in1 mm
Overnight
midnight–6 AM
Drizzle, 60°16°30% chance · 0.11 in2.9 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
- 64°18°–71°22°
- Low, likely
- 46°8°–53°12°
- Wind
- 12 mph19 km/h, gusts 26 mph42 km/h
- UV peak
- 4
Monday, Nov 2. Drizzle. High 70°21°, low 59°15°. Rain 0.22 in5.6 mm, 30% chance. Forecasts agree.
Morning
6 AM–noon
Drizzle, 61°16°30% chance · 0.08 in2.1 mm
Afternoon
noon–6 PM
Drizzle, 70°21°20% chance · 0.01 in0.3 mm
Evening
6 PM–midnight
Clear, 62°17°30% chance · 0.03 in0.7 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 agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 69°21°–71°22°
- Low, likely
- 56°13°–66°19°
- Wind
- 16 mph25 km/h, gusts 33 mph53 km/h
- UV peak
- 3
The outlook
Today
Dry, high 60°, low 36°.
Tomorrow
Dry, high 64°, low 38°, warming up.
Monday
Dry, high 68°, low 48°, 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
Little Gunpowder Falls at Laurel Brook
6.9 mi- Level
- 1.0 ft
- Flow
- 17 cfs
Reading from Sat 7:15 PM · NWS gauge page
Winters Run near Benson
7.7 mi- Level
- 1.3 ft
- Flow
- 3 cfs
Reading from Sat 8:15 PM · NWS gauge page
Little Falls at Blue Mount
7.9 mi- Level
- 0.1 ft
Reading from Sat 8:15 PM · NWS gauge page
Sun & moon
Sun
Sunrise 7:25 AM, sunset 6:14 PM.
- Daylight
- 10 h 48 min
- Losing 2 min 25 s a day; shortest Dec 21, 1 h 26 min less
- Golden hour
- 5:36–6:30 PM
- Morning 7:08–8:02 AM
- Blue hour
- 6:30–6:41 PM
- Morning 6:58–7:08 AM; first light 6:58 AM
Stars tonight? Fair
Clear 9:09 PM–6:59 AM, but the moon is 99% lit and up.
Moon
Waxing gibbous
98% lit · growing
- Today
- sets 5:37 AM · rises 5:10 PM
- Full moon
- Oct 26
- New moon
- Nov 9
