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Current weather in San Mar is broken clouds.

Where can I find the hourly weather forecast for San Mar?

This page shows hourly weather forecast for San Mar, including temperature, wind, precipitation, humidity and cloud cover.

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

Now · 3:57 PM

San Mar Weather & Hourly Forecast

United States · Maryland · 21713

78°F

Mostly cloudy

Feels like: 79°F

💧 Humidity 68% 🌡 Pressure 29.97 inHg 💨 Wind 9 mph 👁 Visibility 20.1 mi ☁ Clouds 94% ☀️ UV index 1.7 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for San Mar

Today

4:00 PM

Mostly cloudy

78° 💧 0.005 in 💨 9 mph H 68%29.97 inHg

7:00 PM

Overcast

74° 💧 0.008 in 💨 9 mph H 82%29.97 inHg

10:00 PM

Light rain

71° 💧 0.013 in 💨 8 mph H 97%29.97 inHg

Tomorrow

1:00 AM

Fog at night

70° 💧 0.001 in 💨 6 mph H 98%29.97 inHg

4:00 AM

Fog at night

70° 💧 0.070 in 💨 5 mph H 98%29.91 inHg

7:00 AM

Light rain

69° 💧 0.103 in 💨 4 mph H 100%29.91 inHg

10:00 AM

Light rain

73° 💧 0.021 in 💨 4 mph H 94%29.94 inHg

1:00 PM

Light rain

80° 💧 0.020 in 💨 8 mph H 69%29.91 inHg

4:00 PM

Mostly sunny

83° 💧 0.001 in 💨 9 mph H 60%29.85 inHg

7:00 PM

Sunny

79° 💧 None 💨 6 mph H 69%29.88 inHg

10:00 PM

Clear night

73° 💧 None 💨 5 mph H 76%29.94 inHg

Monday

1:00 AM

Mostly cloudy night

71° 💧 0.000 in 💨 8 mph H 83%29.94 inHg

4:00 AM

Overcast night

69° 💧 0.000 in 💨 9 mph H 81%29.97 inHg

7:00 AM

Sunny

66° 💧 None 💨 7 mph H 91%30.03 inHg

10:00 AM

Sunny

70° 💧 0.005 in 💨 9 mph H 71%30.12 inHg

1:00 PM

Sunny

74° 💧 None 💨 10 mph H 52%30.12 inHg

Today

4:00 PM

Mostly cloudy

78° 💧 0.000 in 💨 9 mph H 68%29.97 inHg

5:00 PM

Overcast

79° 💧 0.003 in 💨 9 mph H 68%29.97 inHg

6:00 PM

Overcast

78° 💧 0.002 in 💨 10 mph H 71%29.97 inHg

7:00 PM

Overcast

74° 💧 0.001 in 💨 9 mph H 82%29.97 inHg

8:00 PM

Overcast night

72° 💧 0.003 in 💨 10 mph H 90%30.00 inHg

9:00 PM

Overcast night

71° 💧 0.003 in 💨 6 mph H 94%30.00 inHg

10:00 PM

Light rain

71° 💧 0.011 in 💨 8 mph H 97%29.97 inHg

11:00 PM

Overcast night

70° 💧 0.001 in 💨 7 mph H 98%30.00 inHg

Tomorrow

12:00 AM

Fog at night

70° 💧 0.000 in 💨 5 mph H 98%29.97 inHg

1:00 AM

Fog at night

70° 💧 0.000 in 💨 6 mph H 98%29.97 inHg

2:00 AM

Fog at night

70° 💧 0.001 in 💨 5 mph H 98%29.94 inHg

3:00 AM

Fog at night

70° 💧 0.000 in 💨 5 mph H 98%29.94 inHg

4:00 AM

Fog at night

70° 💧 0.001 in 💨 5 mph H 98%29.91 inHg

5:00 AM

Light rain

70° 💧 0.021 in 💨 4 mph H 99%29.91 inHg

6:00 AM

Light rain

70° 💧 0.047 in 💨 4 mph H 100%29.91 inHg

7:00 AM

Light rain

69° 💧 0.031 in 💨 4 mph H 100%29.91 inHg

8:00 AM

Light rain

70° 💧 0.059 in 💨 3 mph H 99%29.91 inHg

9:00 AM

Light rain

71° 💧 0.013 in 💨 4 mph H 96%29.94 inHg

10:00 AM

Light rain

73° 💧 0.010 in 💨 4 mph H 94%29.94 inHg

11:00 AM

Light rain

75° 💧 0.005 in 💨 6 mph H 84%29.94 inHg

12:00 PM

Light rain

78° 💧 0.006 in 💨 7 mph H 75%29.91 inHg

1:00 PM

Light rain

80° 💧 0.008 in 💨 8 mph H 69%29.91 inHg

2:00 PM

Light rain

82° 💧 0.004 in 💨 9 mph H 64%29.88 inHg

3:00 PM

Light rain

82° 💧 0.008 in 💨 10 mph H 63%29.88 inHg

4:00 PM

Mostly sunny

83° 💧 0.001 in 💨 9 mph H 60%29.85 inHg

5:00 PM

Sunny

83° 💧 None 💨 9 mph H 60%29.85 inHg

6:00 PM

Sunny

81° 💧 None 💨 8 mph H 61%29.88 inHg

7:00 PM

Sunny

79° 💧 None 💨 6 mph H 69%29.88 inHg

8:00 PM

Mostly clear night

76° 💧 None 💨 8 mph H 72%29.91 inHg

9:00 PM

Clear night

75° 💧 None 💨 7 mph H 71%29.94 inHg

10:00 PM

Clear night

73° 💧 None 💨 5 mph H 76%29.94 inHg

11:00 PM

Mostly clear night

72° 💧 None 💨 4 mph H 80%29.94 inHg

Monday

12:00 AM

Mostly clear night

72° 💧 None 💨 7 mph H 80%29.97 inHg

1:00 AM

Mostly cloudy night

71° 💧 0.000 in 💨 8 mph H 83%29.94 inHg

2:00 AM

Mostly cloudy night

70° 💧 None 💨 8 mph H 84%29.94 inHg

3:00 AM

Partly cloudy night

70° 💧 None 💨 9 mph H 82%29.97 inHg

4:00 AM

Overcast night

69° 💧 None 💨 9 mph H 81%29.97 inHg

5:00 AM

Mostly clear night

69° 💧 0.000 in 💨 7 mph H 82%29.97 inHg

6:00 AM

Mostly clear night

67° 💧 None 💨 7 mph H 87%30.00 inHg

7:00 AM

Sunny

66° 💧 None 💨 7 mph H 91%30.03 inHg

8:00 AM

Sunny

67° 💧 None 💨 6 mph H 88%30.09 inHg

9:00 AM

Sunny

69° 💧 None 💨 9 mph H 78%30.09 inHg

10:00 AM

Sunny

70° 💧 0.001 in 💨 9 mph H 71%30.12 inHg

11:00 AM

Sunny

71° 💧 0.003 in 💨 11 mph H 65%30.12 inHg

12:00 PM

Sunny

73° 💧 0.001 in 💨 10 mph H 58%30.12 inHg

1:00 PM

Sunny

74° 💧 None 💨 10 mph H 52%30.12 inHg

2:00 PM

Sunny

74° 💧 None 💨 11 mph H 46%30.12 inHg

3:00 PM

Sunny

74° 💧 None 💨 11 mph H 43%30.12 inHg

4:00 PM

Sunny

74° 💧 None 💨 10 mph H 42%30.12 inHg

5:00 PM

Sunny

73° 💧 None 💨 10 mph H 43%30.12 inHg

6:00 PM

Sunny

71° 💧 None 💨 10 mph H 46%30.15 inHg

7:00 PM

Sunny

68° 💧 None 💨 8 mph H 52%30.18 inHg

8:00 PM

Clear night

66° 💧 None 💨 7 mph H 56%30.18 inHg

9:00 PM

Clear night

64° 💧 None 💨 5 mph H 60%30.21 inHg

10:00 PM

Clear night

63° 💧 None 💨 4 mph H 63%30.24 inHg

11:00 PM

Mostly clear night

62° 💧 None 💨 5 mph H 66%30.24 inHg

Tuesday

12:00 AM

Mostly clear night

61° 💧 None 💨 5 mph H 64%30.24 inHg

1:00 AM

Clear night

61° 💧 None 💨 6 mph H 63%30.24 inHg

2:00 AM

Clear night

59° 💧 None 💨 6 mph H 67%30.27 inHg

3:00 AM

Clear night

58° 💧 None 💨 7 mph H 70%30.27 inHg

4:00 AM

Clear night

57° 💧 None 💨 6 mph H 72%30.27 inHg

5:00 AM

Mostly cloudy night

56° 💧 None 💨 5 mph H 75%30.30 inHg

6:00 AM

Mostly clear night

55° 💧 None 💨 4 mph H 78%30.30 inHg

7:00 AM

Mostly sunny

54° 💧 None 💨 4 mph H 81%30.30 inHg

8:00 AM

Mostly sunny

57° 💧 None 💨 4 mph H 74%30.33 inHg

11:00 AM

Partly cloudy

70° 💧 None 💨 6 mph H 49%30.36 inHg

2:00 PM

Mostly sunny

76° 💧 None 💨 8 mph H 44%30.30 inHg

5:00 PM

Mostly sunny

77° 💧 None 💨 8 mph H 43%30.27 inHg

8:00 PM

Mostly cloudy night

70° 💧 None 💨 6 mph H 58%30.27 inHg

11:00 PM

Mostly cloudy night

67° 💧 None 💨 7 mph H 67%30.30 inHg

Wednesday

2:00 AM

Mostly cloudy night

65° 💧 None 💨 7 mph H 73%30.30 inHg

5:00 AM

Partly cloudy night

63° 💧 None 💨 6 mph H 82%30.30 inHg

8:00 AM

Sunny

65° 💧 None 💨 5 mph H 81%30.36 inHg

11:00 AM

Sunny

77° 💧 None 💨 5 mph H 57%30.36 inHg

2:00 PM

Partly cloudy

84° 💧 None 💨 7 mph H 49%30.27 inHg

5:00 PM

Sunny

84° 💧 None 💨 8 mph H 48%30.24 inHg

8:00 PM

Mostly clear night

78° 💧 None 💨 6 mph H 61%30.27 inHg

11:00 PM

Mostly clear night

74° 💧 None 💨 8 mph H 68%30.30 inHg

Thursday

2:00 AM

Mostly clear night

70° 💧 None 💨 9 mph H 74%30.27 inHg

5:00 AM

Mostly clear night

67° 💧 None 💨 7 mph H 79%30.27 inHg

8:00 AM

Mostly sunny

69° 💧 None 💨 6 mph H 76%30.30 inHg

11:00 AM

Mostly sunny

80° 💧 None 💨 6 mph H 58%30.30 inHg

2:00 PM

Sunny

86° 💧 None 💨 9 mph H 48%30.21 inHg

5:00 PM

Sunny

87° 💧 None 💨 8 mph H 47%30.18 inHg

8:00 PM

Mostly clear night

81° 💧 None 💨 7 mph H 57%30.18 inHg

11:00 PM

Mostly clear night

76° 💧 None 💨 8 mph H 58%30.18 inHg

Friday

2:00 AM

Clear night

72° 💧 None 💨 6 mph H 58%30.15 inHg

5:00 AM

Clear night

70° 💧 None 💨 5 mph H 63%30.12 inHg

8:00 AM

Sunny

71° 💧 None 💨 3 mph H 66%30.15 inHg

2:00 PM

Mostly sunny

90° 💧 None 💨 5 mph H 53%30.03 inHg

8:00 PM

Clear night

81° 💧 None 💨 5 mph H 74%29.97 inHg

Saturday

2:00 AM

Mostly clear night

73° 💧 None 💨 3 mph H 95%30.00 inHg

8:00 AM

Mostly sunny

68° 💧 None 💨 8 mph H 90%30.03 inHg

2:00 PM

Overcast

79° 💧 None 💨 6 mph H 57%30.03 inHg

8:00 PM

Overcast night

74° 💧 None 💨 10 mph H 70%30.00 inHg

Sunday

2:00 AM

Light rain

67° 💧 None 💨 12 mph H 96%29.97 inHg

8:00 AM

Overcast

67° 💧 None 💨 6 mph H 97%29.97 inHg

2:00 PM

Light rain

68° 💧 None 💨 10 mph H 80%30.00 inHg

8:00 PM

Overcast night

63° 💧 None 💨 8 mph H 83%30.03 inHg

Monday

2:00 AM

Overcast night

59° 💧 None 💨 7 mph H 93%30.12 inHg

8:00 AM

Overcast

61° 💧 None 💨 4 mph H 84%30.15 inHg

2:00 PM

Overcast

71° 💧 None 💨 8 mph H 58%30.15 inHg

8:00 PM

Overcast night

68° 💧 None 💨 8 mph H 66%30.12 inHg

Tuesday

2:00 AM

Overcast night

64° 💧 None 💨 5 mph H 77%30.12 inHg

8:00 AM

Light rain

63° 💧 None 💨 4 mph H 92%30.09 inHg

2:00 PM

Overcast

73° 💧 None 💨 1 mph H 77%30.06 inHg

8:00 PM

Overcast night

71° 💧 None 💨 2 mph H 85%30.03 inHg

Wednesday

2:00 AM

Overcast night

69° 💧 None 💨 4 mph H 91%30.03 inHg

8:00 AM

Overcast

70° 💧 None 💨 2 mph H 91%30.06 inHg

2:00 PM

Light rain

77° 💧 None 💨 8 mph H 76%30.06 inHg

8:00 PM

Moderate rain

67° 💧 None 💨 11 mph H 95%30.12 inHg

Thursday

2:00 AM

Light rain

62° 💧 None 💨 8 mph H 93%30.18 inHg

8:00 AM

Overcast

61° 💧 None 💨 7 mph H 96%30.24 inHg

2:00 PM

Overcast

69° 💧 None 💨 10 mph H 68%30.27 inHg

8:00 PM

Overcast night

64° 💧 None 💨 8 mph H 79%30.27 inHg

Friday

2:00 AM

Partly cloudy night

61° 💧 None 💨 8 mph H 78%30.30 inHg

8:00 AM

Overcast

59° 💧 None 💨 8 mph H 79%30.27 inHg

2:00 PM

Overcast

71° 💧 None 💨 10 mph H 64%30.21 inHg

8:00 PM

Overcast night

68° 💧 None 💨 10 mph H 72%30.15 inHg

Saturday

2:00 AM

Moderate rain

64° 💧 None 💨 8 mph H 95%30.09 inHg

8:00 AM

Light rain

66° 💧 None 💨 12 mph H 98%29.97 inHg

2:00 PM

Light rain

73° 💧 None 💨 8 mph H 96%29.88 inHg

8:00 PM

Mostly clear night

71° 💧 None 💨 4 mph H 98%29.85 inHg

Sunday

2:00 AM

Partly cloudy night

67° 💧 None 💨 4 mph H 100%29.83 inHg

8:00 AM

Partly cloudy

65° 💧 None 💨 6 mph H 98%29.88 inHg

In San Mar and, more broadly, across the state of Maryland: As the afternoon progresses into the evening, mostly cloudy skies will persist with temperatures remaining mild to warm, ranging from 67 to 79 degrees Fahrenheit. A slight chance of light rain exists, with possible accumulations around 0.01 inches, and the highest probability of rain is around 71%. Winds will be generally light coming from the southeast at speeds up to 8 mph, with gusts reaching around 18 mph. Overall, expect a mild evening with partly cloudy conditions and a low chance of light rain. Temperatures will gradually cool as night approaches.

15-Day Weather Outlook for San Mar

TomorrowTomorrow

Overcast 84°/69° 💧 None 💨 8 mph

Monday, Sep 14Mon Sep 14

Mostly sunny 77°/67° 💧 None 💨 12 mph

Tuesday, Sep 15Tue Sep 15

Sunny 76°/55° 💧 0.440 in 💨 6 mph

Wednesday, Sep 16Wed Sep 16

Mostly sunny 84°/61° 💧 None 💨 8 mph

Thursday, Sep 17Thu Sep 17

Sunny 89°/66° 💧 0.001 in 💨 7 mph

Friday, Sep 18Fri Sep 18

Mostly sunny 77°/64° 💧 0.043 in 💨 5 mph

Saturday, Sep 19Sat Sep 19

Sunny 90°/68° 💧 None 💨 5 mph

Sunday, Sep 20Sun Sep 20

Mostly sunny 93°/71° 💧 None 💨 7 mph

Monday, Sep 21Mon Sep 21

Overcast 87°/60° 💧 0.056 in 💨 12 mph

Tuesday, Sep 22Tue Sep 22

Partly cloudy 72°/60° 💧 None 💨 8 mph

Wednesday, Sep 23Wed Sep 23

Light rain 64°/59° 💧 0.126 in 💨 5 mph

Thursday, Sep 24Thu Sep 24

Light rain 66°/60° 💧 0.259 in 💨 5 mph

Friday, Sep 25Fri Sep 25

Light rain 64°/59° 💧 0.327 in 💨 7 mph

Saturday, Sep 26Sat Sep 26

Moderate rain 68°/57° 💧 0.194 in 💨 6 mph

Sunday, Sep 27Sun Sep 27

Partly cloudy 68°/62° 💧 None 💨 2 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in San Mar

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for San Mar

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 4:00 PM

PM2.5 Fine particles Good 7,3µg/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 8,3µg/m³

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

O₃ Ozone Good 53,6µg/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 San Mar

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 3,9Moderate 😊Good

Tomorrow UV 5,6Moderate 🙂Fair

Monday UV 4,1Moderate 🙂Fair

Tuesday UV 6,0High 🙂Fair

Wednesday UV 7,0High 🙂Fair

Thursday UV 8,0Very high —Unavailable

Friday UV 8,0Very high —Unavailable

Hourly UV index today

4:00 PMUV 1,2 5:00 PMUV 1,0 6:00 PMUV 0,4 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.

Stay hydrated

Drink water regularly, especially during physical activity or prolonged sun exposure.

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 San Mar

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · SAN MAR, MARYLAND

Tonight's Stargazing & Shooting Stars

Local night-sky conditions and meteor activity for Jasper.

18/100Best-hour score

No good viewing window tonight Astronomical darkness exists, but current sky conditions are unfavorable.

☁ Cloud cover 100% Real hourly forecast for the best viewing hour.

☾ Moonlight 2% New Moon · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 7° high at the best hour.

✦ Estimated visible meteors Poor visibility Meteor activity may occur above the clouds, but local viewing conditions are not suitable.

Chance ≥1 meteor in 30 minNot meaningful

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

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

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

UPCOMING

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

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 San Mar were last refreshed today at 3:57 PM. The current forecast period extends through 14/09/2026 at 1:00 PM. 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.