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Current weather in Grantsville is broken clouds.

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Is the weather forecast for Grantsville updated regularly?

Weather data for Grantsville is updated regularly with the latest available observations and forecasts.

Now · 8:05 AM

Grantsville Weather & Hourly Forecast

United States · Maryland · 21536

49°F

Mostly cloudy

Feels like: 41°F

💧 Humidity 94% 🌡 Pressure 30.36 inHg 💨 Wind 13 mph 👁 Visibility 5.4 mi ☁ Clouds 87% ☀️ UV index 0.1 · Low 🌅 Sunrise 7:04 AM 🌇 Sunset 7:13 PM

Hourly Forecast for Grantsville

Today

9:00 AM

Mostly sunny

50° 💧 0.000 in 💨 14 mph H 88%30.39 inHg

12:00 PM

Mostly sunny

55° 💧 None 💨 15 mph H 58%30.36 inHg

3:00 PM

Overcast

57° 💧 None 💨 13 mph H 63%30.33 inHg

6:00 PM

Overcast

55° 💧 None 💨 13 mph H 70%30.33 inHg

9:00 PM

Overcast night

52° 💧 None 💨 14 mph H 79%30.36 inHg

Tomorrow

12:00 AM

Overcast night

50° 💧 None 💨 13 mph H 85%30.36 inHg

3:00 AM

Mostly cloudy night

48° 💧 None 💨 14 mph H 83%30.36 inHg

6:00 AM

Partly cloudy night

45° 💧 None 💨 11 mph H 86%30.36 inHg

9:00 AM

Sunny

45° 💧 None 💨 12 mph H 75%30.39 inHg

12:00 PM

Mostly sunny

53° 💧 None 💨 11 mph H 65%30.36 inHg

3:00 PM

Mostly cloudy

57° 💧 None 💨 8 mph H 60%30.30 inHg

6:00 PM

Mostly cloudy

55° 💧 None 💨 7 mph H 65%30.27 inHg

9:00 PM

Mostly clear night

47° 💧 None 💨 6 mph H 86%30.30 inHg

Friday

12:00 AM

Clear night

46° 💧 None 💨 5 mph H 74%30.27 inHg

3:00 AM

Clear night

44° 💧 None 💨 6 mph H 80%30.27 inHg

6:00 AM

Clear night

41° 💧 None 💨 4 mph H 87%30.27 inHg

Today

9:00 AM

Mostly sunny

50° 💧 0.000 in 💨 14 mph H 88%30.39 inHg

10:00 AM

Partly cloudy

51° 💧 None 💨 15 mph H 76%30.39 inHg

11:00 AM

Partly cloudy

53° 💧 None 💨 15 mph H 63%30.39 inHg

12:00 PM

Mostly sunny

55° 💧 None 💨 15 mph H 58%30.36 inHg

1:00 PM

Partly cloudy

56° 💧 None 💨 14 mph H 58%30.36 inHg

2:00 PM

Partly cloudy

57° 💧 None 💨 13 mph H 61%30.33 inHg

3:00 PM

Overcast

57° 💧 None 💨 13 mph H 63%30.33 inHg

4:00 PM

Overcast

58° 💧 None 💨 13 mph H 63%30.33 inHg

5:00 PM

Overcast

57° 💧 None 💨 13 mph H 65%30.30 inHg

6:00 PM

Overcast

55° 💧 None 💨 13 mph H 70%30.33 inHg

7:00 PM

Overcast

53° 💧 None 💨 12 mph H 74%30.33 inHg

8:00 PM

Overcast night

53° 💧 None 💨 13 mph H 77%30.36 inHg

9:00 PM

Overcast night

52° 💧 None 💨 14 mph H 79%30.36 inHg

10:00 PM

Overcast night

51° 💧 None 💨 14 mph H 81%30.36 inHg

11:00 PM

Overcast night

51° 💧 None 💨 14 mph H 84%30.36 inHg

Tomorrow

12:00 AM

Overcast night

50° 💧 None 💨 13 mph H 85%30.36 inHg

1:00 AM

Overcast night

49° 💧 None 💨 14 mph H 86%30.36 inHg

2:00 AM

Overcast night

48° 💧 None 💨 14 mph H 84%30.36 inHg

3:00 AM

Mostly cloudy night

48° 💧 None 💨 14 mph H 83%30.36 inHg

4:00 AM

Mostly cloudy night

47° 💧 None 💨 12 mph H 86%30.36 inHg

5:00 AM

Mostly cloudy night

46° 💧 None 💨 12 mph H 88%30.36 inHg

6:00 AM

Partly cloudy night

45° 💧 None 💨 11 mph H 86%30.36 inHg

7:00 AM

Partly cloudy night

44° 💧 None 💨 11 mph H 89%30.39 inHg

8:00 AM

Mostly sunny

44° 💧 None 💨 11 mph H 90%30.39 inHg

9:00 AM

Sunny

45° 💧 None 💨 12 mph H 75%30.39 inHg

10:00 AM

Sunny

48° 💧 None 💨 12 mph H 71%30.39 inHg

11:00 AM

Mostly sunny

50° 💧 None 💨 12 mph H 69%30.39 inHg

12:00 PM

Mostly sunny

53° 💧 None 💨 11 mph H 65%30.36 inHg

1:00 PM

Mostly sunny

54° 💧 None 💨 9 mph H 62%30.33 inHg

2:00 PM

Partly cloudy

56° 💧 None 💨 8 mph H 61%30.33 inHg

3:00 PM

Mostly cloudy

57° 💧 None 💨 8 mph H 60%30.30 inHg

4:00 PM

Overcast

57° 💧 None 💨 7 mph H 60%30.27 inHg

5:00 PM

Mostly cloudy

57° 💧 None 💨 7 mph H 61%30.27 inHg

6:00 PM

Mostly cloudy

55° 💧 None 💨 7 mph H 65%30.27 inHg

7:00 PM

Overcast

51° 💧 None 💨 5 mph H 77%30.27 inHg

8:00 PM

Mostly cloudy night

48° 💧 None 💨 5 mph H 85%30.30 inHg

9:00 PM

Mostly clear night

47° 💧 None 💨 6 mph H 86%30.30 inHg

10:00 PM

Mostly clear night

47° 💧 None 💨 6 mph H 81%30.30 inHg

11:00 PM

Clear night

46° 💧 None 💨 6 mph H 75%30.30 inHg

Friday

12:00 AM

Clear night

46° 💧 None 💨 5 mph H 74%30.27 inHg

1:00 AM

Clear night

45° 💧 None 💨 5 mph H 75%30.27 inHg

2:00 AM

Clear night

45° 💧 None 💨 5 mph H 78%30.27 inHg

3:00 AM

Clear night

44° 💧 None 💨 6 mph H 80%30.27 inHg

4:00 AM

Clear night

44° 💧 None 💨 5 mph H 83%30.27 inHg

5:00 AM

Clear night

42° 💧 None 💨 4 mph H 87%30.27 inHg

6:00 AM

Clear night

41° 💧 None 💨 4 mph H 87%30.27 inHg

7:00 AM

Clear night

41° 💧 None 💨 4 mph H 87%30.27 inHg

8:00 AM

Sunny

44° 💧 None 💨 5 mph H 84%30.27 inHg

9:00 AM

Sunny

49° 💧 None 💨 4 mph H 75%30.27 inHg

10:00 AM

Sunny

53° 💧 None 💨 6 mph H 61%30.27 inHg

11:00 AM

Sunny

56° 💧 None 💨 6 mph H 50%30.27 inHg

12:00 PM

Sunny

59° 💧 None 💨 6 mph H 45%30.24 inHg

1:00 PM

Sunny

61° 💧 None 💨 6 mph H 43%30.24 inHg

2:00 PM

Sunny

62° 💧 None 💨 7 mph H 41%30.21 inHg

3:00 PM

Sunny

63° 💧 None 💨 7 mph H 44%30.18 inHg

4:00 PM

Sunny

63° 💧 None 💨 7 mph H 47%30.18 inHg

5:00 PM

Sunny

62° 💧 None 💨 7 mph H 51%30.18 inHg

6:00 PM

Sunny

60° 💧 None 💨 5 mph H 62%30.18 inHg

7:00 PM

Sunny

54° 💧 None 💨 5 mph H 75%30.18 inHg

8:00 PM

Clear night

51° 💧 None 💨 5 mph H 80%30.18 inHg

11:00 PM

Mostly clear night

49° 💧 None 💨 3 mph H 84%30.21 inHg

Saturday

2:00 AM

Clear night

47° 💧 None 💨 3 mph H 86%30.18 inHg

5:00 AM

Mostly clear night

45° 💧 None 💨 3 mph H 90%30.18 inHg

8:00 AM

Mostly sunny

46° 💧 None 💨 3 mph H 93%30.21 inHg

11:00 AM

Sunny

61° 💧 None 💨 4 mph H 62%30.21 inHg

2:00 PM

Sunny

66° 💧 None 💨 6 mph H 48%30.15 inHg

5:00 PM

Mostly sunny

64° 💧 None 💨 8 mph H 58%30.12 inHg

8:00 PM

Clear night

54° 💧 None 💨 3 mph H 78%30.12 inHg

11:00 PM

Clear night

51° 💧 None 💨 2 mph H 80%30.12 inHg

Sunday

2:00 AM

Clear night

48° 💧 None 💨 5 mph H 90%30.09 inHg

5:00 AM

Mostly clear night

45° 💧 None 💨 3 mph H 93%30.09 inHg

8:00 AM

Overcast

46° 💧 None 💨 4 mph H 97%30.09 inHg

11:00 AM

Overcast

57° 💧 None 💨 8 mph H 74%30.06 inHg

2:00 PM

Overcast

61° 💧 None 💨 9 mph H 61%30.03 inHg

5:00 PM

Partly cloudy

63° 💧 None 💨 10 mph H 62%29.97 inHg

8:00 PM

Overcast night

56° 💧 None 💨 6 mph H 85%29.97 inHg

11:00 PM

Overcast night

51° 💧 None 💨 4 mph H 90%29.97 inHg

Monday

2:00 AM

Mostly cloudy night

48° 💧 None 💨 2 mph H 96%29.97 inHg

5:00 AM

Overcast night

45° 💧 None 💨 3 mph H 100%29.97 inHg

8:00 AM

Mostly cloudy

46° 💧 None 💨 4 mph H 98%30.03 inHg

11:00 AM

Mostly sunny

57° 💧 None 💨 7 mph H 78%30.00 inHg

2:00 PM

Mostly sunny

63° 💧 None 💨 9 mph H 61%29.97 inHg

5:00 PM

Partly cloudy

63° 💧 None 💨 10 mph H 57%29.94 inHg

8:00 PM

Clear night

56° 💧 None 💨 3 mph H 81%29.97 inHg

Tuesday

2:00 AM

Clear night

51° 💧 None 💨 1 mph H 86%30.03 inHg

8:00 AM

Sunny

50° 💧 None 💨 1 mph H 90%30.06 inHg

2:00 PM

Sunny

71° 💧 None 💨 3 mph H 49%30.00 inHg

8:00 PM

Clear night

58° 💧 None 💨 4 mph H 83%29.97 inHg

Wednesday

2:00 AM

Clear night

54° 💧 None 💨 6 mph H 84%30.00 inHg

8:00 AM

Sunny

54° 💧 None 💨 4 mph H 84%29.97 inHg

2:00 PM

Moderate rain

73° 💧 None 💨 8 mph H 68%29.94 inHg

8:00 PM

Mostly clear night

65° 💧 None 💨 7 mph H 86%29.91 inHg

Thursday

2:00 AM

Partly cloudy night

64° 💧 None 💨 12 mph H 76%29.88 inHg

8:00 AM

Overcast

61° 💧 None 💨 12 mph H 89%29.85 inHg

2:00 PM

Moderate rain

66° 💧 None 💨 13 mph H 95%29.80 inHg

8:00 PM

Overcast night

64° 💧 None 💨 8 mph H 97%29.80 inHg

Friday

2:00 AM

Light rain

60° 💧 None 💨 10 mph H 99%29.83 inHg

8:00 AM

Light rain

56° 💧 None 💨 8 mph H 99%29.88 inHg

2:00 PM

Mostly cloudy

62° 💧 None 💨 12 mph H 60%29.88 inHg

8:00 PM

Mostly clear night

54° 💧 None 💨 10 mph H 73%29.94 inHg

Saturday

2:00 AM

Overcast night

47° 💧 None 💨 7 mph H 93%30.03 inHg

8:00 AM

Light rain

47° 💧 None 💨 9 mph H 89%30.12 inHg

2:00 PM

Overcast

53° 💧 None 💨 11 mph H 59%30.15 inHg

8:00 PM

Mostly cloudy night

49° 💧 None 💨 3 mph H 71%30.18 inHg

Sunday

2:00 AM

Partly cloudy night

46° 💧 None 💨 1 mph H 83%30.27 inHg

8:00 AM

Partly cloudy

46° 💧 None 💨 1 mph H 86%30.30 inHg

2:00 PM

Overcast

55° 💧 None 💨 4 mph H 52%30.27 inHg

8:00 PM

Mostly cloudy night

47° 💧 None 💨 3 mph H 76%30.27 inHg

Monday

2:00 AM

Mostly cloudy night

44° 💧 None 💨 1 mph H 83%30.27 inHg

8:00 AM

Partly cloudy

44° 💧 None 💨 2 mph H 86%30.24 inHg

2:00 PM

Sunny

61° 💧 None 💨 4 mph H 53%30.21 inHg

8:00 PM

Clear night

51° 💧 None 💨 3 mph H 82%30.18 inHg

Tuesday

2:00 AM

Mostly clear night

47° 💧 None 💨 4 mph H 85%30.15 inHg

8:00 AM

Sunny

49° 💧 None 💨 6 mph H 85%30.12 inHg

2:00 PM

Sunny

67° 💧 None 💨 12 mph H 54%30.03 inHg

8:00 PM

Clear night

61° 💧 None 💨 10 mph H 70%29.91 inHg

Wednesday

2:00 AM

Light rain

59° 💧 None 💨 11 mph H 82%29.85 inHg

8:00 AM

Mostly sunny

50° 💧 None 💨 7 mph H 98%29.88 inHg

2:00 PM

Mostly sunny

57° 💧 None 💨 15 mph H 49%29.85 inHg

8:00 PM

Mostly clear night

48° 💧 None 💨 8 mph H 62%29.88 inHg

In Grantsville and, more broadly, across the state of Maryland: The morning will start with mostly cloudy skies and mild temperatures around 65 to 74 degrees Fahrenheit. Light northeast winds are expected, reaching up to 9 mph with gusts up to 17 mph. As the day progresses, there's a high likelihood of rain, with an expected accumulation of about 0.18 inches. The rain could develop at any time, so it’s a good idea to have an umbrella handy. Temperatures are expected to remain steady through the afternoon, maintaining the mild conditions. Overall, expect a cloudy day with periods of light rainfall and gentle breezes.

15-Day Weather Outlook for Grantsville

TomorrowTomorrow

Overcast 57°/44° 💧 None 💨 14 mph

Friday, Sep 25Fri Sep 25

Mostly sunny 63°/41° 💧 0.091 in 💨 7 mph

Saturday, Sep 26Sat Sep 26

Mostly sunny 66°/45° 💧 None 💨 8 mph

Sunday, Sep 27Sun Sep 27

Mostly sunny 63°/45° 💧 None 💨 10 mph

Monday, Sep 28Mon Sep 28

Mostly cloudy 63°/45° 💧 None 💨 10 mph

Tuesday, Sep 29Tue Sep 29

Sunny 71°/50° 💧 None 💨 4 mph

Wednesday, Sep 30Wed Sep 30

Moderate rain 73°/54° 💧 0.071 in 💨 8 mph

Thursday, Oct 1Thu Oct 1

Moderate rain 66°/61° 💧 0.187 in 💨 13 mph

Friday, Oct 2Fri Oct 2

Light rain 62°/54° 💧 0.074 in 💨 12 mph

Saturday, Oct 3Sat Oct 3

Light rain 53°/47° 💧 0.041 in 💨 11 mph

Sunday, Oct 4Sun Oct 4

Partly cloudy 55°/46° 💧 None 💨 4 mph

Monday, Oct 5Mon Oct 5

Mostly cloudy 61°/44° 💧 None 💨 4 mph

Tuesday, Oct 6Tue Oct 6

Mostly sunny 67°/47° 💧 None 💨 12 mph

Wednesday, Oct 7Wed Oct 7

Light rain 59°/48° 💧 0.245 in 💨 15 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Grantsville

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Grantsville

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 9:00 AM

PM2.5 Fine particles Good 0,9µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 1,2µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Good 45,1µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 2,7µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is favorable for outdoor activities.

UV & HEALTH

UV, Sun & Health Outlook in Grantsville

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 5,7Moderate 😊Good

Tomorrow UV 5,5Moderate 🙂Fair

Friday UV 5,8Moderate 🙂Fair

Saturday UV 5,5Moderate 🙂Fair

Sunday UV 5,0Moderate 🙂Fair

Monday UV 5,0Moderate —Unavailable

Tuesday UV 3,0Moderate —Unavailable

Hourly UV index today

9:00 AMUV 0,3 10:00 AMUV 0,7 11:00 AMUV 1,7 12:00 PMUV 4,0 1:00 PMUV 5,4 2:00 PMUV 5,7 3:00 PMUV 4,6 4:00 PMUV 3,0 5:00 PMUV 1,5 6:00 PMUV 0,5 7:00 PMUV 0,0

Today's weather health advice Open today's recommendations.

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Grantsville

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · GRANTSVILLE, MARYLAND

Tonight's Stargazing & Shooting Stars

Fair observing conditions. Best local viewing window: 6:00 AM–7:00 AM.

56/100Best-hour score

BEST TIME TONIGHT 6:00 AM–7:00 AM Astronomical darkness: 8:42 PM–5:36 AM

☁ Cloud cover 61% Real hourly forecast for the best viewing hour.

☾ Moonlight 95% Waxing Gibbous · Moon below the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 59° high at the best hour.

✦ Estimated visible meteors 0–2/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min50%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

ACTIVE NOW

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

NOV 6–NOV 30

LeonidsStart NOV 6 · Peak NOV 17 · End NOV 30 · ZHR 15 · 52% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

DISCOVER WEATHER NEARBY Weather in other cities

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Forecast data for Grantsville were last refreshed today at 8:05 AM. The current forecast period extends through 25/09/2026 at 6:00 AM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.