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Current weather in Gaithersburg is scattered clouds.

Where can I find the hourly weather forecast for Gaithersburg?

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

Is the weather forecast for Gaithersburg updated regularly?

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

Now · 5:16 AM

Gaithersburg Weather & Hourly Forecast

United States · Maryland · 20878

63°F

Partly cloudy night

Feels like: 65°F

💧 Humidity 77% 🌡 Pressure 30.24 inHg 💨 Wind 0 mph 👁 Visibility 18.6 mi ☁ Clouds 62% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Gaithersburg

Today

6:00 AM

Mostly cloudy night

63° 💧 None 💨 1 mph H 77%30.24 inHg

9:00 AM

Mostly cloudy

72° 💧 None 💨 2 mph H 62%30.27 inHg

12:00 PM

Sunny

82° 💧 None 💨 5 mph H 46%30.24 inHg

3:00 PM

Overcast

88° 💧 None 💨 4 mph H 33%30.18 inHg

6:00 PM

Mostly cloudy

85° 💧 None 💨 5 mph H 36%30.18 inHg

9:00 PM

Mostly cloudy night

76° 💧 None 💨 5 mph H 59%30.21 inHg

Tomorrow

12:00 AM

Clear night

72° 💧 None 💨 7 mph H 68%30.21 inHg

3:00 AM

Partly cloudy night

69° 💧 None 💨 7 mph H 67%30.21 inHg

6:00 AM

Overcast night

68° 💧 None 💨 7 mph H 69%30.21 inHg

9:00 AM

Mostly cloudy

74° 💧 None 💨 6 mph H 57%30.21 inHg

12:00 PM

Partly cloudy

87° 💧 None 💨 8 mph H 39%30.18 inHg

3:00 PM

Mostly sunny

91° 💧 None 💨 10 mph H 32%30.09 inHg

6:00 PM

Sunny

88° 💧 None 💨 12 mph H 36%30.03 inHg

9:00 PM

Clear night

80° 💧 None 💨 12 mph H 52%30.03 inHg

Thursday

12:00 AM

Clear night

77° 💧 None 💨 10 mph H 54%30.03 inHg

3:00 AM

Clear night

74° 💧 None 💨 9 mph H 57%30.00 inHg

Today

6:00 AM

Mostly cloudy night

63° 💧 None 💨 1 mph H 77%30.24 inHg

7:00 AM

Mostly cloudy

63° 💧 None 💨 1 mph H 80%30.24 inHg

8:00 AM

Mostly cloudy

67° 💧 None 💨 1 mph H 73%30.24 inHg

9:00 AM

Mostly cloudy

72° 💧 None 💨 2 mph H 62%30.27 inHg

10:00 AM

Partly cloudy

76° 💧 None 💨 4 mph H 56%30.27 inHg

11:00 AM

Sunny

79° 💧 None 💨 5 mph H 51%30.27 inHg

12:00 PM

Sunny

82° 💧 None 💨 5 mph H 46%30.24 inHg

1:00 PM

Partly cloudy

85° 💧 None 💨 4 mph H 41%30.24 inHg

2:00 PM

Mostly cloudy

86° 💧 None 💨 4 mph H 38%30.21 inHg

3:00 PM

Overcast

88° 💧 None 💨 4 mph H 33%30.18 inHg

4:00 PM

Overcast

87° 💧 None 💨 5 mph H 32%30.18 inHg

5:00 PM

Mostly cloudy

87° 💧 None 💨 6 mph H 34%30.18 inHg

6:00 PM

Mostly cloudy

85° 💧 None 💨 5 mph H 36%30.18 inHg

7:00 PM

Overcast

82° 💧 None 💨 1 mph H 50%30.18 inHg

8:00 PM

Mostly cloudy night

78° 💧 None 💨 4 mph H 53%30.18 inHg

9:00 PM

Mostly cloudy night

76° 💧 None 💨 5 mph H 59%30.21 inHg

10:00 PM

Mostly clear night

74° 💧 None 💨 6 mph H 64%30.21 inHg

11:00 PM

Mostly clear night

73° 💧 None 💨 6 mph H 67%30.24 inHg

Tomorrow

12:00 AM

Clear night

72° 💧 None 💨 7 mph H 68%30.21 inHg

1:00 AM

Clear night

71° 💧 None 💨 7 mph H 66%30.21 inHg

2:00 AM

Mostly clear night

70° 💧 None 💨 7 mph H 66%30.21 inHg

3:00 AM

Partly cloudy night

69° 💧 None 💨 7 mph H 67%30.21 inHg

4:00 AM

Mostly cloudy night

69° 💧 None 💨 7 mph H 68%30.21 inHg

5:00 AM

Mostly cloudy night

68° 💧 None 💨 7 mph H 69%30.21 inHg

6:00 AM

Overcast night

68° 💧 None 💨 7 mph H 69%30.21 inHg

7:00 AM

Mostly cloudy

68° 💧 None 💨 6 mph H 70%30.21 inHg

8:00 AM

Mostly cloudy

70° 💧 None 💨 5 mph H 65%30.24 inHg

9:00 AM

Mostly cloudy

74° 💧 None 💨 6 mph H 57%30.21 inHg

10:00 AM

Mostly sunny

78° 💧 None 💨 6 mph H 50%30.21 inHg

11:00 AM

Mostly sunny

83° 💧 None 💨 7 mph H 44%30.21 inHg

12:00 PM

Partly cloudy

87° 💧 None 💨 8 mph H 39%30.18 inHg

1:00 PM

Mostly sunny

89° 💧 None 💨 9 mph H 35%30.15 inHg

2:00 PM

Mostly sunny

90° 💧 None 💨 9 mph H 34%30.12 inHg

3:00 PM

Mostly sunny

91° 💧 None 💨 10 mph H 32%30.09 inHg

4:00 PM

Mostly cloudy

91° 💧 None 💨 10 mph H 32%30.06 inHg

5:00 PM

Mostly cloudy

90° 💧 None 💨 11 mph H 33%30.03 inHg

6:00 PM

Sunny

88° 💧 None 💨 12 mph H 36%30.03 inHg

7:00 PM

Sunny

86° 💧 None 💨 10 mph H 38%30.03 inHg

8:00 PM

Clear night

82° 💧 None 💨 12 mph H 46%30.03 inHg

9:00 PM

Clear night

80° 💧 None 💨 12 mph H 52%30.03 inHg

10:00 PM

Clear night

79° 💧 None 💨 11 mph H 54%30.03 inHg

11:00 PM

Clear night

77° 💧 None 💨 10 mph H 55%30.06 inHg

Thursday

12:00 AM

Clear night

77° 💧 None 💨 10 mph H 54%30.03 inHg

1:00 AM

Clear night

76° 💧 None 💨 10 mph H 54%30.03 inHg

2:00 AM

Clear night

75° 💧 None 💨 9 mph H 55%30.00 inHg

3:00 AM

Clear night

74° 💧 None 💨 9 mph H 57%30.00 inHg

4:00 AM

Clear night

74° 💧 None 💨 8 mph H 58%29.97 inHg

5:00 AM

Clear night

73° 💧 None 💨 8 mph H 60%29.97 inHg

6:00 AM

Clear night

72° 💧 None 💨 7 mph H 61%29.97 inHg

7:00 AM

Mostly sunny

72° 💧 None 💨 6 mph H 63%29.97 inHg

8:00 AM

Sunny

74° 💧 None 💨 5 mph H 58%29.97 inHg

9:00 AM

Mostly sunny

78° 💧 0.000 in 💨 5 mph H 52%29.97 inHg

10:00 AM

Mostly sunny

83° 💧 0.002 in 💨 5 mph H 46%29.97 inHg

11:00 AM

Sunny

87° 💧 0.000 in 💨 6 mph H 42%29.94 inHg

12:00 PM

Mostly sunny

89° 💧 0.001 in 💨 7 mph H 41%29.94 inHg

1:00 PM

Mostly sunny

91° 💧 0.001 in 💨 7 mph H 40%29.91 inHg

2:00 PM

Light rain

92° 💧 0.006 in 💨 8 mph H 41%29.88 inHg

3:00 PM

Light rain

87° 💧 0.027 in 💨 9 mph H 53%29.85 inHg

4:00 PM

Light rain

87° 💧 0.015 in 💨 5 mph H 54%29.83 inHg

5:00 PM

Mostly sunny

88° 💧 0.000 in 💨 3 mph H 49%29.80 inHg

6:00 PM

Partly cloudy

87° 💧 0.001 in 💨 5 mph H 51%29.77 inHg

7:00 PM

Light thunderstorms

78° 💧 0.029 in 💨 8 mph H 78%29.80 inHg

8:00 PM

Light rain

76° 💧 0.051 in 💨 8 mph H 91%29.83 inHg

11:00 PM

Light rain

72° 💧 None 💨 7 mph H 97%29.85 inHg

Friday

2:00 AM

Overcast night

71° 💧 None 💨 5 mph H 99%29.88 inHg

5:00 AM

Partly cloudy night

68° 💧 None 💨 5 mph H 99%29.91 inHg

8:00 AM

Partly cloudy

66° 💧 None 💨 8 mph H 94%30.00 inHg

11:00 AM

Mostly cloudy

72° 💧 None 💨 9 mph H 74%30.03 inHg

2:00 PM

Partly cloudy

77° 💧 None 💨 6 mph H 50%30.00 inHg

5:00 PM

Partly cloudy

77° 💧 None 💨 4 mph H 49%29.97 inHg

8:00 PM

Mostly clear night

69° 💧 None 💨 5 mph H 69%30.00 inHg

11:00 PM

Partly cloudy night

66° 💧 None 💨 6 mph H 73%30.03 inHg

Saturday

2:00 AM

Overcast night

65° 💧 None 💨 6 mph H 76%30.06 inHg

5:00 AM

Overcast night

64° 💧 None 💨 6 mph H 79%30.06 inHg

8:00 AM

Partly cloudy

67° 💧 None 💨 7 mph H 79%30.09 inHg

11:00 AM

Partly cloudy

76° 💧 None 💨 6 mph H 61%30.12 inHg

2:00 PM

Overcast

81° 💧 None 💨 9 mph H 52%30.09 inHg

5:00 PM

Mostly cloudy

79° 💧 None 💨 10 mph H 58%30.03 inHg

8:00 PM

Mostly cloudy night

76° 💧 None 💨 10 mph H 66%30.06 inHg

11:00 PM

Overcast night

73° 💧 None 💨 8 mph H 79%30.09 inHg

Sunday

2:00 AM

Overcast night

72° 💧 None 💨 7 mph H 90%30.06 inHg

5:00 AM

Overcast night

72° 💧 None 💨 5 mph H 96%30.03 inHg

8:00 AM

Overcast

73° 💧 None 💨 6 mph H 94%30.06 inHg

11:00 AM

Overcast

79° 💧 None 💨 6 mph H 74%30.06 inHg

2:00 PM

Mostly cloudy

85° 💧 None 💨 5 mph H 61%30.00 inHg

5:00 PM

Light rain

85° 💧 None 💨 6 mph H 61%29.94 inHg

8:00 PM

Mostly clear night

78° 💧 None 💨 3 mph H 79%30.00 inHg

Monday

2:00 AM

Partly cloudy night

73° 💧 None 💨 3 mph H 94%30.00 inHg

8:00 AM

Mostly sunny

72° 💧 None 💨 7 mph H 91%30.09 inHg

2:00 PM

Partly cloudy

83° 💧 None 💨 8 mph H 52%30.09 inHg

8:00 PM

Clear night

74° 💧 None 💨 6 mph H 52%30.09 inHg

Tuesday

2:00 AM

Partly cloudy night

67° 💧 None 💨 6 mph H 69%30.18 inHg

8:00 AM

Partly cloudy

67° 💧 None 💨 5 mph H 72%30.24 inHg

2:00 PM

Overcast

84° 💧 None 💨 7 mph H 57%30.21 inHg

8:00 PM

Mostly clear night

77° 💧 None 💨 9 mph H 63%30.18 inHg

Wednesday

2:00 AM

Mostly clear night

73° 💧 None 💨 9 mph H 84%30.18 inHg

8:00 AM

Mostly sunny

74° 💧 None 💨 4 mph H 89%30.21 inHg

2:00 PM

Mostly sunny

92° 💧 None 💨 5 mph H 47%30.18 inHg

8:00 PM

Partly cloudy night

80° 💧 None 💨 2 mph H 84%30.18 inHg

Thursday

2:00 AM

Partly cloudy night

75° 💧 None 💨 3 mph H 95%30.18 inHg

8:00 AM

Light thunderstorms

69° 💧 None 💨 8 mph H 97%30.21 inHg

2:00 PM

Overcast

71° 💧 None 💨 4 mph H 89%30.12 inHg

8:00 PM

Light rain

71° 💧 None 💨 2 mph H 94%30.00 inHg

Friday

2:00 AM

Light rain

67° 💧 None 💨 12 mph H 96%29.94 inHg

8:00 AM

Sunny

60° 💧 None 💨 14 mph H 80%30.09 inHg

2:00 PM

Sunny

64° 💧 None 💨 14 mph H 48%30.15 inHg

8:00 PM

Clear night

57° 💧 None 💨 7 mph H 53%30.21 inHg

Saturday

2:00 AM

Clear night

49° 💧 None 💨 7 mph H 62%30.30 inHg

8:00 AM

Sunny

48° 💧 None 💨 6 mph H 70%30.33 inHg

2:00 PM

Sunny

62° 💧 None 💨 4 mph H 48%30.27 inHg

8:00 PM

Clear night

56° 💧 None 💨 3 mph H 69%30.21 inHg

Sunday

2:00 AM

Clear night

51° 💧 None 💨 3 mph H 81%30.24 inHg

8:00 AM

Sunny

52° 💧 None 💨 4 mph H 79%30.24 inHg

2:00 PM

Sunny

70° 💧 None 💨 3 mph H 49%30.21 inHg

8:00 PM

Clear night

62° 💧 None 💨 3 mph H 69%30.18 inHg

Monday

2:00 AM

Mostly clear night

56° 💧 None 💨 6 mph H 80%30.21 inHg

8:00 AM

Sunny

56° 💧 None 💨 6 mph H 80%30.21 inHg

2:00 PM

Mostly sunny

76° 💧 None 💨 6 mph H 41%30.12 inHg

8:00 PM

Partly cloudy night

68° 💧 None 💨 7 mph H 59%30.06 inHg

Tuesday

2:00 AM

Partly cloudy night

63° 💧 None 💨 8 mph H 71%30.06 inHg

8:00 AM

Mostly cloudy

61° 💧 None 💨 4 mph H 74%30.03 inHg

2:00 PM

Overcast

77° 💧 None 💨 8 mph H 48%30.00 inHg

8:00 PM

Partly cloudy night

71° 💧 None 💨 6 mph H 64%29.94 inHg

In Gaithersburg and, more broadly, across the state of Maryland: The evening will be mostly clear with a few clouds drifting through. Temperatures are expected to be mild to warm, ranging from 69 to 77 degrees Fahrenheit. Light winds from the northeast will blow at around 4 mph, with occasional gusts reaching up to 7 mph. No precipitation is expected during this time, making for a calm and pleasant evening. Temperatures will gradually settle into this comfortable range over the next few hours, providing a nice evening for outdoor activities. Expect the skies to remain mostly clear with gentle breezes, making it an ideal time for some relaxation outside.

15-Day Weather Outlook for Gaithersburg

TomorrowTomorrow

Mostly cloudy 91°/68° 💧 None 💨 12 mph

Thursday, Sep 10Thu Sep 10

Light thunderstorms 92°/72° 💧 None 💨 12 mph

Friday, Sep 11Fri Sep 11

Light rain 77°/66° 💧 0.603 in 💨 9 mph

Saturday, Sep 12Sat Sep 12

Mostly sunny 81°/64° 💧 None 💨 10 mph

Sunday, Sep 13Sun Sep 13

Light rain 85°/72° 💧 0.019 in 💨 10 mph

Monday, Sep 14Mon Sep 14

Mostly sunny 83°/72° 💧 0.003 in 💨 8 mph

Tuesday, Sep 15Tue Sep 15

Partly cloudy 84°/67° 💧 None 💨 7 mph

Wednesday, Sep 16Wed Sep 16

Mostly sunny 92°/73° 💧 0.001 in 💨 9 mph

Thursday, Sep 17Thu Sep 17

Light thunderstorms 80°/69° 💧 0.531 in 💨 8 mph

Friday, Sep 18Fri Sep 18

Light rain 71°/60° 💧 0.537 in 💨 14 mph

Saturday, Sep 19Sat Sep 19

Sunny 62°/48° 💧 None 💨 7 mph

Sunday, Sep 20Sun Sep 20

Sunny 70°/51° 💧 None 💨 4 mph

Monday, Sep 21Mon Sep 21

Mostly sunny 76°/56° 💧 None 💨 6 mph

Tuesday, Sep 22Tue Sep 22

Partly cloudy 77°/61° 💧 0.001 in 💨 8 mph

Wednesday, Sep 23Wed Sep 23

Partly cloudy 71°/71° 💧 None 💨 6 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Gaithersburg

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Gaithersburg

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 6:00 AM

PM2.5 Fine particles Good 5,4µg/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 7,3µg/m³

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

O₃ Ozone Good 19,6µg/m³

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

NO₂ Nitrogen dioxide Good 3,4µg/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 Gaithersburg

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 7,0High 😊Good

Tomorrow UV 7,7High 😐Moderate

Thursday UV 5,3Moderate 🙂Fair

Friday UV 6,6High 🙂Fair

Saturday UV 6,0High 😊Good

Sunday UV 6,0High —Unavailable

Monday UV 7,0High —Unavailable

Hourly UV index today

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

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 Gaithersburg

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · GAITHERSBURG, MARYLAND

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 1:00 AM–2:00 AM.

99/100Best-hour score

BEST TIME TONIGHT 1:00 AM–2:00 AM Astronomical darkness: 9:00 PM–5:13 AM

☁ Cloud cover 2% Real hourly forecast for the best viewing hour.

☾ Moonlight 8% Waning Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 43° high at the best hour.

✦ Estimated visible meteors 1–3/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min68%

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 Gaithersburg were last refreshed today at 5:16 AM. The current forecast period extends through 10/09/2026 at 3:00 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.