What is the weather in Arnold right now?

Current weather in Arnold is fog.

Where can I find the hourly weather forecast for Arnold?

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

Is the weather forecast for Arnold updated regularly?

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

Now · 7:06 AM

Arnold Weather & Hourly Forecast

United States · Maryland · 21012

73°F

Fog

Feels like: 79°F

💧 Humidity 98% 🌡 Pressure 29.91 inHg 💨 Wind 6 mph 👁 Visibility 0.6 mi ☁ Clouds 70% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Arnold

Today

8:00 AM

Mist

73° 💧 0.009 in 💨 6 mph H 98%29.94 inHg

11:00 AM

Light rain

77° 💧 0.020 in 💨 6 mph H 86%29.94 inHg

2:00 PM

Overcast

82° 💧 0.010 in 💨 3 mph H 73%29.88 inHg

5:00 PM

Mostly sunny

82° 💧 0.010 in 💨 6 mph H 76%29.85 inHg

8:00 PM

Clear night

79° 💧 0.000 in 💨 5 mph H 85%29.85 inHg

11:00 PM

Mostly clear night

77° 💧 None 💨 6 mph H 88%29.91 inHg

Tomorrow

2:00 AM

Mostly clear night

75° 💧 None 💨 9 mph H 91%29.88 inHg

5:00 AM

Clear night

74° 💧 None 💨 10 mph H 85%29.94 inHg

8:00 AM

Sunny

73° 💧 None 💨 11 mph H 80%30.03 inHg

11:00 AM

Sunny

75° 💧 None 💨 12 mph H 60%30.09 inHg

2:00 PM

Sunny

77° 💧 None 💨 12 mph H 49%30.09 inHg

5:00 PM

Sunny

75° 💧 None 💨 12 mph H 47%30.09 inHg

8:00 PM

Clear night

71° 💧 None 💨 11 mph H 55%30.15 inHg

11:00 PM

Clear night

70° 💧 None 💨 11 mph H 60%30.21 inHg

Tuesday

2:00 AM

Clear night

67° 💧 None 💨 10 mph H 67%30.24 inHg

5:00 AM

Clear night

64° 💧 None 💨 8 mph H 74%30.30 inHg

Today

8:00 AM

Mist

73° 💧 0.000 in 💨 6 mph H 98%29.94 inHg

9:00 AM

Mist

74° 💧 0.003 in 💨 7 mph H 95%29.94 inHg

10:00 AM

Light rain

75° 💧 0.005 in 💨 6 mph H 93%29.94 inHg

11:00 AM

Light rain

77° 💧 0.007 in 💨 6 mph H 86%29.94 inHg

12:00 PM

Light rain

80° 💧 0.008 in 💨 5 mph H 80%29.94 inHg

1:00 PM

Light rain

82° 💧 0.005 in 💨 5 mph H 76%29.91 inHg

2:00 PM

Overcast

82° 💧 0.003 in 💨 3 mph H 73%29.88 inHg

3:00 PM

Mostly sunny

82° 💧 0.003 in 💨 4 mph H 73%29.88 inHg

4:00 PM

Light rain

82° 💧 0.004 in 💨 6 mph H 74%29.85 inHg

5:00 PM

Mostly sunny

82° 💧 0.001 in 💨 6 mph H 76%29.85 inHg

6:00 PM

Light rain

81° 💧 0.008 in 💨 6 mph H 81%29.85 inHg

7:00 PM

Sunny

80° 💧 0.001 in 💨 5 mph H 85%29.85 inHg

8:00 PM

Clear night

79° 💧 0.000 in 💨 5 mph H 85%29.85 inHg

9:00 PM

Clear night

78° 💧 None 💨 5 mph H 86%29.88 inHg

10:00 PM

Clear night

77° 💧 None 💨 5 mph H 87%29.91 inHg

11:00 PM

Mostly clear night

77° 💧 None 💨 6 mph H 88%29.91 inHg

Tomorrow

12:00 AM

Clear night

76° 💧 None 💨 6 mph H 89%29.91 inHg

1:00 AM

Mostly clear night

76° 💧 None 💨 8 mph H 91%29.88 inHg

2:00 AM

Mostly clear night

75° 💧 None 💨 9 mph H 91%29.88 inHg

3:00 AM

Mostly clear night

75° 💧 None 💨 9 mph H 88%29.88 inHg

4:00 AM

Clear night

75° 💧 None 💨 9 mph H 87%29.91 inHg

5:00 AM

Clear night

74° 💧 None 💨 10 mph H 85%29.94 inHg

6:00 AM

Clear night

74° 💧 None 💨 11 mph H 83%29.97 inHg

7:00 AM

Sunny

73° 💧 None 💨 11 mph H 83%29.97 inHg

8:00 AM

Sunny

73° 💧 None 💨 11 mph H 80%30.03 inHg

9:00 AM

Sunny

73° 💧 None 💨 13 mph H 71%30.03 inHg

10:00 AM

Sunny

74° 💧 None 💨 13 mph H 65%30.06 inHg

11:00 AM

Sunny

75° 💧 None 💨 12 mph H 60%30.09 inHg

12:00 PM

Sunny

76° 💧 None 💨 11 mph H 57%30.09 inHg

1:00 PM

Sunny

76° 💧 None 💨 11 mph H 53%30.09 inHg

2:00 PM

Sunny

77° 💧 None 💨 12 mph H 49%30.09 inHg

3:00 PM

Sunny

77° 💧 None 💨 12 mph H 45%30.09 inHg

4:00 PM

Sunny

76° 💧 None 💨 12 mph H 45%30.09 inHg

5:00 PM

Sunny

75° 💧 None 💨 12 mph H 47%30.09 inHg

6:00 PM

Sunny

74° 💧 None 💨 11 mph H 50%30.12 inHg

7:00 PM

Sunny

72° 💧 None 💨 11 mph H 53%30.12 inHg

8:00 PM

Clear night

71° 💧 None 💨 11 mph H 55%30.15 inHg

9:00 PM

Clear night

70° 💧 None 💨 11 mph H 56%30.18 inHg

10:00 PM

Clear night

70° 💧 None 💨 10 mph H 58%30.21 inHg

11:00 PM

Clear night

70° 💧 None 💨 11 mph H 60%30.21 inHg

Tuesday

12:00 AM

Clear night

68° 💧 None 💨 10 mph H 63%30.24 inHg

1:00 AM

Clear night

68° 💧 None 💨 10 mph H 65%30.24 inHg

2:00 AM

Clear night

67° 💧 None 💨 10 mph H 67%30.24 inHg

3:00 AM

Clear night

66° 💧 None 💨 9 mph H 69%30.24 inHg

4:00 AM

Clear night

65° 💧 None 💨 8 mph H 72%30.27 inHg

5:00 AM

Clear night

64° 💧 None 💨 8 mph H 74%30.30 inHg

6:00 AM

Clear night

64° 💧 None 💨 9 mph H 75%30.30 inHg

7:00 AM

Sunny

64° 💧 None 💨 8 mph H 76%30.30 inHg

8:00 AM

Sunny

65° 💧 None 💨 8 mph H 73%30.33 inHg

9:00 AM

Mostly sunny

66° 💧 None 💨 8 mph H 68%30.33 inHg

10:00 AM

Partly cloudy

67° 💧 None 💨 7 mph H 64%30.36 inHg

11:00 AM

Mostly cloudy

69° 💧 None 💨 5 mph H 59%30.39 inHg

12:00 PM

Mostly cloudy

70° 💧 None 💨 3 mph H 55%30.39 inHg

1:00 PM

Mostly cloudy

71° 💧 None 💨 3 mph H 52%30.36 inHg

2:00 PM

Partly cloudy

72° 💧 None 💨 3 mph H 50%30.33 inHg

3:00 PM

Sunny

72° 💧 None 💨 4 mph H 48%30.33 inHg

4:00 PM

Mostly sunny

73° 💧 None 💨 3 mph H 46%30.30 inHg

5:00 PM

Sunny

73° 💧 None 💨 3 mph H 47%30.30 inHg

6:00 PM

Sunny

72° 💧 None 💨 3 mph H 54%30.30 inHg

7:00 PM

Partly cloudy

71° 💧 None 💨 1 mph H 60%30.30 inHg

8:00 PM

Mostly cloudy night

70° 💧 None 💨 1 mph H 63%30.30 inHg

11:00 PM

Partly cloudy night

68° 💧 None 💨 11 mph H 78%30.33 inHg

Wednesday

2:00 AM

Mostly cloudy night

68° 💧 None 💨 7 mph H 81%30.33 inHg

5:00 AM

Mostly cloudy night

67° 💧 None 💨 5 mph H 84%30.33 inHg

8:00 AM

Partly cloudy

67° 💧 None 💨 5 mph H 83%30.36 inHg

11:00 AM

Mostly sunny

73° 💧 None 💨 5 mph H 68%30.39 inHg

2:00 PM

Sunny

76° 💧 None 💨 7 mph H 66%30.33 inHg

5:00 PM

Mostly sunny

77° 💧 None 💨 6 mph H 63%30.27 inHg

8:00 PM

Clear night

75° 💧 None 💨 6 mph H 64%30.30 inHg

11:00 PM

Clear night

74° 💧 None 💨 7 mph H 68%30.30 inHg

Thursday

2:00 AM

Clear night

70° 💧 None 💨 9 mph H 71%30.30 inHg

5:00 AM

Clear night

68° 💧 None 💨 6 mph H 87%30.30 inHg

8:00 AM

Sunny

69° 💧 None 💨 4 mph H 85%30.30 inHg

11:00 AM

Sunny

77° 💧 None 💨 6 mph H 66%30.30 inHg

2:00 PM

Sunny

80° 💧 None 💨 11 mph H 59%30.24 inHg

5:00 PM

Sunny

79° 💧 None 💨 13 mph H 68%30.15 inHg

8:00 PM

Clear night

77° 💧 None 💨 10 mph H 76%30.15 inHg

11:00 PM

Clear night

75° 💧 None 💨 10 mph H 74%30.15 inHg

Friday

2:00 AM

Clear night

72° 💧 None 💨 9 mph H 75%30.12 inHg

5:00 AM

Clear night

71° 💧 None 💨 6 mph H 77%30.09 inHg

8:00 AM

Light rain

71° 💧 None 💨 5 mph H 77%30.12 inHg

11:00 AM

Mostly sunny

80° 💧 None 💨 4 mph H 66%30.12 inHg

2:00 PM

Mostly sunny

82° 💧 None 💨 10 mph H 63%30.09 inHg

5:00 PM

Sunny

82° 💧 None 💨 9 mph H 54%30.06 inHg

8:00 PM

Clear night

77° 💧 None 💨 10 mph H 59%30.12 inHg

Saturday

2:00 AM

Clear night

70° 💧 None 💨 12 mph H 68%30.18 inHg

8:00 AM

Mostly sunny

66° 💧 None 💨 12 mph H 68%30.21 inHg

2:00 PM

Sunny

74° 💧 None 💨 3 mph H 58%30.18 inHg

8:00 PM

Mostly cloudy night

74° 💧 None 💨 8 mph H 65%30.12 inHg

Sunday

2:00 AM

Overcast night

71° 💧 None 💨 10 mph H 79%30.09 inHg

8:00 AM

Overcast

72° 💧 None 💨 10 mph H 84%30.06 inHg

2:00 PM

Light rain

83° 💧 None 💨 9 mph H 64%29.97 inHg

8:00 PM

Mostly clear night

79° 💧 None 💨 10 mph H 79%29.94 inHg

Monday

2:00 AM

Clear night

77° 💧 None 💨 7 mph H 83%29.97 inHg

8:00 AM

Partly cloudy

75° 💧 None 💨 3 mph H 88%30.00 inHg

2:00 PM

Mostly cloudy

84° 💧 None 💨 5 mph H 71%30.00 inHg

8:00 PM

Mostly cloudy night

79° 💧 None 💨 6 mph H 88%30.00 inHg

Tuesday

2:00 AM

Light rain

75° 💧 None 💨 6 mph H 95%30.06 inHg

8:00 AM

Mostly cloudy

74° 💧 None 💨 5 mph H 97%30.06 inHg

2:00 PM

Light rain

80° 💧 None 💨 6 mph H 81%30.03 inHg

8:00 PM

Moderate rain

78° 💧 None 💨 4 mph H 92%30.00 inHg

Wednesday

2:00 AM

Overcast night

74° 💧 None 💨 7 mph H 97%29.97 inHg

8:00 AM

Partly cloudy

74° 💧 None 💨 4 mph H 96%29.97 inHg

2:00 PM

Light rain

82° 💧 None 💨 5 mph H 75%29.88 inHg

8:00 PM

Partly cloudy night

77° 💧 None 💨 3 mph H 94%29.85 inHg

Thursday

2:00 AM

Clear night

74° 💧 None 💨 3 mph H 99%29.85 inHg

8:00 AM

Partly cloudy

74° 💧 None 💨 4 mph H 95%29.88 inHg

2:00 PM

Light rain

82° 💧 None 💨 2 mph H 73%29.88 inHg

8:00 PM

Overcast night

78° 💧 None 💨 2 mph H 91%29.94 inHg

Friday

2:00 AM

Overcast night

72° 💧 None 💨 14 mph H 94%30.00 inHg

8:00 AM

Moderate rain

70° 💧 None 💨 15 mph H 94%30.09 inHg

2:00 PM

Moderate rain

72° 💧 None 💨 15 mph H 93%30.09 inHg

8:00 PM

Light rain

72° 💧 None 💨 17 mph H 95%30.09 inHg

Saturday

2:00 AM

Light rain

73° 💧 None 💨 14 mph H 95%30.06 inHg

8:00 AM

Moderate rain

72° 💧 None 💨 11 mph H 95%30.06 inHg

2:00 PM

Light rain

74° 💧 None 💨 3 mph H 93%30.00 inHg

8:00 PM

Moderate rain

73° 💧 None 💨 1 mph H 95%29.94 inHg

Sunday

2:00 AM

Partly cloudy night

69° 💧 None 💨 8 mph H 98%29.91 inHg

8:00 AM

Mostly sunny

67° 💧 None 💨 8 mph H 93%29.94 inHg

2:00 PM

Overcast

76° 💧 None 💨 8 mph H 69%29.88 inHg

In Arnold and, more broadly, across the state of Maryland: This morning features a mix of sun and clouds with mild temperatures around 71 to 75 degrees. Winds are light out of the northwest at around 8 mph, with occasional gusts up to 11 mph. As the day progresses, temperatures will warm to between 78 and 81 degrees. There is a possibility of rain, with as much as 0.08 inches of accumulation expected, and the highest likelihood of precipitation occurring during the afternoon hours. Winds will remain light, generally from the northwest, with similar speeds as in the morning. Overall, it will be a day with variable skies, mild to warm temperatures, and a chance of light rain later in the day.

15-Day Weather Outlook for Arnold

TomorrowTomorrow

Mostly sunny 79°/72° 💧 None 💨 13 mph

Tuesday, Sep 15Tue Sep 15

Mostly sunny 73°/64° 💧 None 💨 11 mph

Wednesday, Sep 16Wed Sep 16

Mostly cloudy 77°/67° 💧 0.163 in 💨 11 mph

Thursday, Sep 17Thu Sep 17

Sunny 80°/68° 💧 None 💨 13 mph

Friday, Sep 18Fri Sep 18

Light rain 82°/71° 💧 0.037 in 💨 10 mph

Saturday, Sep 19Sat Sep 19

Mostly sunny 77°/66° 💧 None 💨 12 mph

Sunday, Sep 20Sun Sep 20

Light rain 83°/71° 💧 0.028 in 💨 10 mph

Monday, Sep 21Mon Sep 21

Mostly sunny 84°/75° 💧 0.012 in 💨 10 mph

Tuesday, Sep 22Tue Sep 22

Light rain 80°/74° 💧 0.602 in 💨 6 mph

Wednesday, Sep 23Wed Sep 23

Moderate rain 82°/74° 💧 0.465 in 💨 7 mph

Thursday, Sep 24Thu Sep 24

Light rain 82°/74° 💧 0.096 in 💨 4 mph

Friday, Sep 25Fri Sep 25

Moderate rain 78°/70° 💧 0.743 in 💨 15 mph

Saturday, Sep 26Sat Sep 26

Moderate rain 74°/72° 💧 1.272 in 💨 17 mph

Sunday, Sep 27Sun Sep 27

Moderate rain 76°/67° 💧 0.221 in 💨 8 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Arnold

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Arnold

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 8:00 AM

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

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

O₃ Ozone Good 10,1µg/m³

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

NO₂ Nitrogen dioxide Good 4,2µg/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 Arnold

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 6,6High 😊Good

Tomorrow UV 6,3High 🙂Fair

Tuesday UV 7,0High 🙂Fair

Wednesday UV 7,0High 😐Moderate

Thursday UV 7,0High 😊Good

Friday UV 7,0High —Unavailable

Saturday UV 6,0High —Unavailable

Hourly UV index today

8:00 AMUV 0,0 9:00 AMUV 0,1 10:00 AMUV 0,4 11:00 AMUV 4,0 12:00 PMUV 5,9 1:00 PMUV 6,6 2:00 PMUV 5,6 3:00 PMUV 3,3 4:00 PMUV 2,6 5:00 PMUV 1,4 6:00 PMUV 0,3 7:00 PMUV 0,0

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

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

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 Arnold

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · ARNOLD, MARYLAND

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 5:00 AM–6:00 AM.

94/100Best-hour score

BEST TIME TONIGHT 5:00 AM–6:00 AM Astronomical darkness: 8:48 PM–5:16 AM

☁ Cloud cover 9% Real hourly forecast for the best viewing hour.

☾ Moonlight 7% Waxing Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 87° high at the best hour.

✦ Estimated visible meteors 2–5/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min79%

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.

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Forecast data for Arnold were last refreshed today at 7:06 AM. The current forecast period extends through 15/09/2026 at 5:00 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.