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Current weather in Dennis is few clouds.

Where can I find the hourly weather forecast for Dennis?

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

Is the weather forecast for Dennis updated regularly?

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

Now · 8:20 AM

Dennis Weather & Hourly Forecast

United States · Massachusetts · 02638

61°F

Mostly sunny

Feels like: 56°F

💧 Humidity 66% 🌡 Pressure 30.36 inHg 💨 Wind 8 mph 👁 Visibility 25.3 mi ☁ Clouds 25% ☀️ UV index 0.6 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Dennis

Today

9:00 AM

Mostly sunny

62° 💧 None 💨 9 mph H 62%30.39 inHg

12:00 PM

Sunny

64° 💧 None 💨 9 mph H 63%30.39 inHg

3:00 PM

Sunny

64° 💧 None 💨 8 mph H 64%30.36 inHg

6:00 PM

Sunny

61° 💧 None 💨 6 mph H 72%30.36 inHg

9:00 PM

Clear night

57° 💧 None 💨 2 mph H 85%30.39 inHg

Tomorrow

12:00 AM

Clear night

57° 💧 None 💨 2 mph H 86%30.36 inHg

3:00 AM

Clear night

57° 💧 None 💨 2 mph H 84%30.33 inHg

6:00 AM

Clear night

56° 💧 None 💨 2 mph H 87%30.36 inHg

9:00 AM

Sunny

64° 💧 None 💨 4 mph H 78%30.36 inHg

12:00 PM

Mostly cloudy

67° 💧 None 💨 9 mph H 71%30.36 inHg

3:00 PM

Overcast

68° 💧 None 💨 11 mph H 71%30.30 inHg

6:00 PM

Partly cloudy

67° 💧 None 💨 9 mph H 76%30.27 inHg

9:00 PM

Partly cloudy night

65° 💧 None 💨 7 mph H 86%30.30 inHg

Thursday

12:00 AM

Clear night

65° 💧 None 💨 6 mph H 92%30.27 inHg

3:00 AM

Mostly clear night

65° 💧 None 💨 5 mph H 93%30.27 inHg

6:00 AM

Overcast night

67° 💧 None 💨 7 mph H 94%30.27 inHg

Today

9:00 AM

Mostly sunny

62° 💧 None 💨 9 mph H 62%30.39 inHg

10:00 AM

Partly cloudy

63° 💧 None 💨 9 mph H 60%30.39 inHg

11:00 AM

Sunny

63° 💧 None 💨 9 mph H 62%30.39 inHg

12:00 PM

Sunny

64° 💧 None 💨 9 mph H 63%30.39 inHg

1:00 PM

Sunny

64° 💧 None 💨 9 mph H 64%30.39 inHg

2:00 PM

Mostly sunny

64° 💧 None 💨 9 mph H 64%30.39 inHg

3:00 PM

Sunny

64° 💧 None 💨 8 mph H 64%30.36 inHg

4:00 PM

Mostly sunny

63° 💧 None 💨 7 mph H 65%30.36 inHg

5:00 PM

Mostly sunny

62° 💧 None 💨 7 mph H 67%30.36 inHg

6:00 PM

Sunny

61° 💧 None 💨 6 mph H 72%30.36 inHg

7:00 PM

Clear night

58° 💧 None 💨 4 mph H 82%30.36 inHg

8:00 PM

Mostly clear night

58° 💧 None 💨 3 mph H 84%30.36 inHg

9:00 PM

Clear night

57° 💧 None 💨 2 mph H 85%30.39 inHg

10:00 PM

Clear night

57° 💧 None 💨 2 mph H 85%30.39 inHg

11:00 PM

Clear night

57° 💧 None 💨 2 mph H 86%30.39 inHg

Tomorrow

12:00 AM

Clear night

57° 💧 None 💨 2 mph H 86%30.36 inHg

1:00 AM

Clear night

57° 💧 None 💨 2 mph H 85%30.36 inHg

2:00 AM

Clear night

57° 💧 None 💨 1 mph H 84%30.36 inHg

3:00 AM

Clear night

57° 💧 None 💨 2 mph H 84%30.33 inHg

4:00 AM

Clear night

57° 💧 None 💨 2 mph H 85%30.33 inHg

5:00 AM

Clear night

56° 💧 None 💨 2 mph H 86%30.33 inHg

6:00 AM

Clear night

56° 💧 None 💨 2 mph H 87%30.36 inHg

7:00 AM

Sunny

58° 💧 None 💨 2 mph H 86%30.36 inHg

8:00 AM

Sunny

62° 💧 None 💨 3 mph H 81%30.36 inHg

9:00 AM

Sunny

64° 💧 None 💨 4 mph H 78%30.36 inHg

10:00 AM

Mostly cloudy

66° 💧 None 💨 6 mph H 74%30.36 inHg

11:00 AM

Mostly cloudy

67° 💧 None 💨 8 mph H 72%30.36 inHg

12:00 PM

Mostly cloudy

67° 💧 None 💨 9 mph H 71%30.36 inHg

1:00 PM

Partly cloudy

67° 💧 None 💨 10 mph H 72%30.33 inHg

2:00 PM

Mostly cloudy

68° 💧 None 💨 11 mph H 71%30.33 inHg

3:00 PM

Overcast

68° 💧 None 💨 11 mph H 71%30.30 inHg

4:00 PM

Mostly cloudy

68° 💧 None 💨 11 mph H 72%30.30 inHg

5:00 PM

Mostly cloudy

68° 💧 None 💨 10 mph H 73%30.27 inHg

6:00 PM

Partly cloudy

67° 💧 None 💨 9 mph H 76%30.27 inHg

7:00 PM

Mostly cloudy night

66° 💧 None 💨 9 mph H 80%30.27 inHg

8:00 PM

Partly cloudy night

66° 💧 None 💨 8 mph H 83%30.27 inHg

9:00 PM

Partly cloudy night

65° 💧 None 💨 7 mph H 86%30.30 inHg

10:00 PM

Mostly clear night

65° 💧 None 💨 7 mph H 88%30.30 inHg

11:00 PM

Partly cloudy night

65° 💧 None 💨 6 mph H 91%30.27 inHg

Thursday

12:00 AM

Clear night

65° 💧 None 💨 6 mph H 92%30.27 inHg

1:00 AM

Clear night

65° 💧 None 💨 5 mph H 93%30.27 inHg

2:00 AM

Mostly clear night

65° 💧 None 💨 4 mph H 92%30.27 inHg

3:00 AM

Mostly clear night

65° 💧 None 💨 5 mph H 93%30.27 inHg

4:00 AM

Partly cloudy night

65° 💧 None 💨 6 mph H 94%30.27 inHg

5:00 AM

Overcast night

66° 💧 None 💨 6 mph H 94%30.27 inHg

6:00 AM

Overcast night

67° 💧 None 💨 7 mph H 94%30.27 inHg

7:00 AM

Overcast

67° 💧 None 💨 7 mph H 93%30.27 inHg

8:00 AM

Mostly cloudy

69° 💧 None 💨 6 mph H 90%30.27 inHg

9:00 AM

Partly cloudy

71° 💧 None 💨 6 mph H 85%30.27 inHg

10:00 AM

Mostly cloudy

74° 💧 0.000 in 💨 7 mph H 78%30.24 inHg

11:00 AM

Mostly cloudy

75° 💧 None 💨 7 mph H 75%30.24 inHg

12:00 PM

Mostly cloudy

76° 💧 0.000 in 💨 8 mph H 73%30.21 inHg

1:00 PM

Mostly cloudy

76° 💧 0.000 in 💨 8 mph H 73%30.21 inHg

2:00 PM

Mostly cloudy

77° 💧 0.000 in 💨 9 mph H 72%30.18 inHg

3:00 PM

Mostly cloudy

76° 💧 None 💨 8 mph H 74%30.18 inHg

4:00 PM

Overcast

76° 💧 None 💨 9 mph H 75%30.15 inHg

5:00 PM

Mostly sunny

74° 💧 None 💨 9 mph H 80%30.15 inHg

6:00 PM

Mostly sunny

72° 💧 0.000 in 💨 9 mph H 86%30.12 inHg

7:00 PM

Mostly cloudy night

70° 💧 None 💨 10 mph H 91%30.12 inHg

8:00 PM

Mostly cloudy night

69° 💧 None 💨 10 mph H 93%30.12 inHg

11:00 PM

Overcast night

70° 💧 None 💨 13 mph H 90%30.09 inHg

Friday

2:00 AM

Overcast night

70° 💧 None 💨 15 mph H 81%30.00 inHg

5:00 AM

Moderate rain

68° 💧 None 💨 14 mph H 94%29.97 inHg

8:00 AM

Partly cloudy

69° 💧 None 💨 10 mph H 93%30.00 inHg

11:00 AM

Mostly sunny

69° 💧 None 💨 13 mph H 78%30.03 inHg

2:00 PM

Sunny

70° 💧 None 💨 8 mph H 70%30.00 inHg

5:00 PM

Mostly sunny

69° 💧 None 💨 5 mph H 73%30.03 inHg

8:00 PM

Partly cloudy night

68° 💧 None 💨 13 mph H 62%30.09 inHg

11:00 PM

Mostly clear night

66° 💧 None 💨 16 mph H 61%30.12 inHg

Saturday

2:00 AM

Clear night

63° 💧 None 💨 16 mph H 60%30.12 inHg

5:00 AM

Partly cloudy night

61° 💧 None 💨 14 mph H 61%30.15 inHg

8:00 AM

Mostly sunny

61° 💧 None 💨 13 mph H 60%30.21 inHg

11:00 AM

Partly cloudy

62° 💧 None 💨 12 mph H 59%30.24 inHg

2:00 PM

Mostly cloudy

62° 💧 None 💨 8 mph H 59%30.21 inHg

5:00 PM

Overcast

61° 💧 None 💨 5 mph H 60%30.21 inHg

8:00 PM

Overcast night

58° 💧 None 💨 4 mph H 68%30.21 inHg

11:00 PM

Mostly cloudy night

57° 💧 None 💨 5 mph H 71%30.21 inHg

Sunday

2:00 AM

Overcast night

58° 💧 None 💨 4 mph H 73%30.21 inHg

5:00 AM

Overcast night

59° 💧 None 💨 5 mph H 76%30.21 inHg

8:00 AM

Overcast

60° 💧 None 💨 5 mph H 75%30.21 inHg

11:00 AM

Partly cloudy

63° 💧 None 💨 4 mph H 63%30.21 inHg

2:00 PM

Mostly cloudy

64° 💧 None 💨 6 mph H 61%30.18 inHg

5:00 PM

Overcast

63° 💧 None 💨 6 mph H 64%30.15 inHg

8:00 PM

Mostly cloudy night

60° 💧 None 💨 5 mph H 83%30.18 inHg

Monday

2:00 AM

Partly cloudy night

59° 💧 None 💨 4 mph H 87%30.21 inHg

8:00 AM

Partly cloudy

62° 💧 None 💨 7 mph H 81%30.24 inHg

2:00 PM

Partly cloudy

66° 💧 None 💨 9 mph H 55%30.24 inHg

8:00 PM

Partly cloudy night

63° 💧 None 💨 9 mph H 86%30.21 inHg

Tuesday

2:00 AM

Light rain

63° 💧 None 💨 11 mph H 91%30.18 inHg

8:00 AM

Moderate rain

62° 💧 None 💨 16 mph H 94%30.15 inHg

2:00 PM

Overcast

62° 💧 None 💨 14 mph H 88%30.15 inHg

8:00 PM

Mostly cloudy night

62° 💧 None 💨 15 mph H 85%30.18 inHg

Wednesday

2:00 AM

Mostly cloudy night

61° 💧 None 💨 13 mph H 85%30.21 inHg

8:00 AM

Partly cloudy

62° 💧 None 💨 14 mph H 76%30.24 inHg

2:00 PM

Mostly sunny

65° 💧 None 💨 12 mph H 71%30.24 inHg

8:00 PM

Mostly clear night

61° 💧 None 💨 10 mph H 80%30.21 inHg

Thursday

2:00 AM

Mostly cloudy night

61° 💧 None 💨 10 mph H 84%30.18 inHg

8:00 AM

Partly cloudy

63° 💧 None 💨 11 mph H 81%30.18 inHg

2:00 PM

Mostly cloudy

65° 💧 None 💨 14 mph H 68%30.18 inHg

8:00 PM

Overcast night

63° 💧 None 💨 12 mph H 75%30.21 inHg

Friday

2:00 AM

Overcast night

63° 💧 None 💨 13 mph H 75%30.21 inHg

8:00 AM

Overcast

62° 💧 None 💨 21 mph H 85%30.27 inHg

2:00 PM

Overcast

64° 💧 None 💨 21 mph H 69%30.27 inHg

8:00 PM

Overcast night

62° 💧 None 💨 23 mph H 76%30.21 inHg

Saturday

2:00 AM

Light rain

60° 💧 None 💨 24 mph H 91%30.06 inHg

8:00 AM

Heavy rain

61° 💧 None 💨 30 mph H 93%29.88 inHg

2:00 PM

Moderate rain

63° 💧 None 💨 30 mph H 94%29.65 inHg

8:00 PM

Light rain

62° 💧 None 💨 28 mph H 95%29.44 inHg

Sunday

2:00 AM

Moderate rain

61° 💧 None 💨 30 mph H 94%29.35 inHg

8:00 AM

Moderate rain

59° 💧 None 💨 32 mph H 90%29.44 inHg

2:00 PM

Overcast

62° 💧 None 💨 26 mph H 73%29.62 inHg

8:00 PM

Mostly clear night

63° 💧 None 💨 24 mph H 65%29.83 inHg

Monday

2:00 AM

Partly cloudy night

57° 💧 None 💨 23 mph H 64%29.97 inHg

8:00 AM

Overcast

56° 💧 None 💨 20 mph H 62%30.09 inHg

2:00 PM

Overcast

55° 💧 None 💨 19 mph H 61%30.18 inHg

8:00 PM

Clear night

55° 💧 None 💨 15 mph H 58%30.24 inHg

Tuesday

2:00 AM

Mostly clear night

56° 💧 None 💨 17 mph H 59%30.30 inHg

8:00 AM

Sunny

56° 💧 None 💨 17 mph H 63%30.36 inHg

2:00 PM

Mostly sunny

57° 💧 None 💨 18 mph H 64%30.36 inHg

8:00 PM

Overcast night

55° 💧 None 💨 15 mph H 70%30.36 inHg

In Dennis and, more broadly, across the state of Massachusetts: This morning, the sky will be mostly sunny with a few clouds, and temperatures will be mild, ranging from 48 to 68 degrees. Light eastward winds will blow at around 5 mph, with occasional gusts reaching up to 15 mph. As the day progresses into the afternoon, the weather will remain dry and partly sunny, with temperatures staying within the same mild range. Winds are expected to continue softly from the east, maintaining gentle breezes throughout the day. Overall, it looks like a pleasant day with comfortable temperatures and calm conditions.

15-Day Weather Outlook for Dennis

TomorrowTomorrow

Mostly cloudy 68°/56° 💧 None 💨 11 mph

Thursday, Sep 17Thu Sep 17

Mostly sunny 77°/65° 💧 0.001 in 💨 13 mph

Friday, Sep 18Fri Sep 18

Moderate rain 70°/66° 💧 0.102 in 💨 16 mph

Saturday, Sep 19Sat Sep 19

Partly cloudy 63°/57° 💧 None 💨 16 mph

Sunday, Sep 20Sun Sep 20

Overcast 64°/58° 💧 0.000 in 💨 6 mph

Monday, Sep 21Mon Sep 21

Partly cloudy 66°/59° 💧 None 💨 9 mph

Tuesday, Sep 22Tue Sep 22

Moderate rain 63°/62° 💧 0.284 in 💨 16 mph

Wednesday, Sep 23Wed Sep 23

Mostly cloudy 65°/61° 💧 None 💨 14 mph

Thursday, Sep 24Thu Sep 24

Mostly cloudy 65°/61° 💧 None 💨 14 mph

Friday, Sep 25Fri Sep 25

Overcast 64°/62° 💧 0.001 in 💨 23 mph

Saturday, Sep 26Sat Sep 26

Heavy rain 63°/60° 💧 2.423 in 💨 30 mph

Sunday, Sep 27Sun Sep 27

Moderate rain 63°/59° 💧 1.752 in 💨 32 mph

Monday, Sep 28Mon Sep 28

Partly cloudy 57°/55° 💧 0.001 in 💨 23 mph

Tuesday, Sep 29Tue Sep 29

Mostly sunny 57°/55° 💧 None 💨 18 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Dennis

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Dennis

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 9:00 AM

PM2.5 Fine particles Good 0,6µg/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 2,4µg/m³

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

O₃ Ozone Fair 74,5µg/m³

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

NO₂ Nitrogen dioxide Good 0,5µg/m³

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

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Dennis

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 6,1High 🙂Fair

Tomorrow UV 6,4High 🙂Fair

Thursday UV 6,0High 😐Moderate

Friday UV 5,0Moderate 😐Moderate

Saturday UV 6,0High 🙂Fair

Sunday UV 5,0Moderate —Unavailable

Monday UV 4,0Moderate —Unavailable

Hourly UV index today

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

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

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 Dennis

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · DENNIS, MASSACHUSETTS

Tonight's Stargazing & Shooting Stars

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

100/100Best-hour score

BEST TIME TONIGHT 5:00 AM–6:00 AM Astronomical darkness: 8:25 PM–4:47 AM

☁ Cloud cover 0% Real hourly forecast for the best viewing hour.

☾ Moonlight 21% Waxing Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 81° 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 min81%

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

Explore current conditions and forecasts for other locations.

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Forecast data for Dennis were last refreshed today at 8:20 AM. The current forecast period extends through 17/09/2026 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.