Atlantic Coast at Dennis Sesuit Harbor (IN MLLW)
1.2 mi- Level
- 7.5 ft
Forecast peak 11.1 ft Mon 12 PM
Reading from Sat 1 PM · NWS gauge page
Observed 3:00 PM EDT at KHYA
East Dennis, MA weather
Sunny and 55°13°.
Today: low 36°2° (likely 36°2° to 45°7°), high 56°13° (likely 53°12° to 57°14°).
Now 55°13°
Sunny
- Wind
- Calm
- Light through 3 AM
- Dew point
- 39°4°
- Comfortable
- UV tomorrow
- 4Moderate
- Moderate 11 AM–4 PM · peak 4
- Air quality
- 29Good
- Main pollutant: Ozone
- Pressure
- 30.48 inHg1032 hPa
- Falling slowly · −0.02 inHg−0.8 hPa in 3 h
Next 2 hours
No precipitation expected in the next 2 hours.
From forecast models
Next 48 hours
Good hours for
This afternoonNear 54°12° · Clear
TonightDown to 39°4° by 3 AM · Clear
Tomorrow morningUp to 58°14° by 11 AM · Clear
Tomorrow afternoonNear 58°14° · Clear
Tomorrow nightDown to 44°7° by 10 PM · Clear
Monday morningUp to 57°14° by 11 AM · Clear
Monday afternoonNear 60°16° · Clear
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 3p | Sunny | 53°12° (likely 53°12° to 55°13°) | 53°12° | 0% | 5 mph8 km/h from N, gusts 6 mph10 km/h | 64% | 3% | 1 |
| Sat 4p | Sunny | 54°12° (likely 52°11° to 55°13°) | 54°12° | 0% | 3 mph5 km/h from NW, gusts 6 mph9 km/h | 59% | 3% | 1 |
| Sat 5p | Sunny | 55°13° (likely 51°11° to 55°13°) | 55°13° | 0% | 2 mph3 km/h from NW, gusts 4 mph7 km/h | 57% | 1% | 0 |
| Sat 6p | Clear | 53°12° (likely 48°9° to 53°12°) | 53°12° | 0% | 1 mph2 km/h from NW, gusts 5 mph8 km/h | 64% | 1% | 0 |
| Sat 7p | Clear | 51°11° (likely 46°8° to 51°11°) | 51°11° | 0% | 1 mph2 km/h from SW, gusts 5 mph7 km/h | 66% | 1% | 0 |
| Sat 8p | Clear | 44°7° (likely 44°7° to 48°9°) | 44°7° | 0% | 2 mph3 km/h from SW, gusts 5 mph7 km/h | 79% | 0% | 0 |
| Sat 9p | Clear | 43°6° (likely 43°6° to 47°8°) | 43°6° | 0% | 2 mph3 km/h from SW, gusts 5 mph8 km/h | 82% | 0% | 0 |
| Sat 10p | Clear | 42°6° (likely 42°6° to 46°8°) | 42°6° | 0% | 1 mph2 km/h from SW, gusts 4 mph7 km/h | 86% | 0% | 0 |
| Sat 11p | Clear | 42°6° (likely 42°6° to 46°8°) | 42°6° | 0% | 1 mph2 km/h from SW, gusts 5 mph8 km/h | 82% | 0% | 0 |
| Sun 12a | Clear | 42°6° (likely 41°5° to 45°7°) | 42°6° | 0% | 1 mph2 km/h from W, gusts 5 mph9 km/h | 82% | 0% | 0 |
| Sun 1a | Clear | 41°5° (likely 41°5° to 45°7°) | 41°5° | 0% | 1 mph2 km/h from W, gusts 5 mph7 km/h | 82% | 0% | 0 |
| Sun 2a | Clear | 40°4° (likely 40°4° to 45°7°) | 40°4° | 0% | 2 mph3 km/h from W, gusts 5 mph8 km/h | 82% | 0% | 0 |
| Sun 3a | Clear | 39°4° (likely 39°4° to 44°7°) | 39°4° | 0% | 2 mph3 km/h from SW, gusts 4 mph7 km/h | 82% | 0% | 0 |
| Sun 4a | Clear | 39°4° (likely 39°4° to 44°7°) | 39°4° | 0% | 2 mph3 km/h from W, gusts 4 mph7 km/h | 82% | 1% | 0 |
| Sun 5a | Clear | 39°4° (likely 39°4° to 44°7°) | 39°4° | 0% | 2 mph3 km/h from W, gusts 4 mph6 km/h | 79% | 2% | 0 |
| Sun 6a | Clear | 39°4° (likely 39°4° to 44°7°) | 39°4° | 0% | 2 mph3 km/h from W, gusts 4 mph6 km/h | 79% | 4% | 0 |
| Sun 7a | Sunny | 39°4° (likely 39°4° to 44°7°) | 39°4° | 0% | 2 mph3 km/h from W, gusts 4 mph6 km/h | 79% | 7% | 0 |
| Sun 8a | Sunny | 44°7° (likely 41°5° to 45°7°) | 44°7° | 0% | 2 mph3 km/h from W, gusts 3 mph5 km/h | 73% | 9% | 0 |
| Sun 9a | Sunny | 50°10° (likely 47°8° to 50°10°) | 50°10° | 0% | 2 mph3 km/h from W, gusts 3 mph5 km/h | 66% | 6% | 1 |
| Sun 10a | Sunny | 53°12° (likely 53°12° to 54°12°) | 53°12° | 0% | 2 mph3 km/h from SW, gusts 4 mph6 km/h | 61% | 3% | 2 |
| Sun 11a | Sunny | 58°14° (likely 56°13° to 58°14°) | 58°14° | 0% | 2 mph3 km/h from SW, gusts 6 mph9 km/h | 55% | 0% | 3 |
| Sun 12p | Sunny | 59°15° (likely 58°14° to 60°16°) | 59°15° | 0% | 3 mph5 km/h from SW, gusts 7 mph11 km/h | 53% | 0% | 4 |
| Sun 1p | Sunny | 61°16° (likely 59°15° to 61°16°) | 61°16° | 0% | 3 mph5 km/h from SW, gusts 7 mph12 km/h | 50% | 1% | 4 |
| Sun 2p | Sunny | 61°16° (likely 59°15° to 61°16°) | 61°16° | 0% | 5 mph8 km/h from S, gusts 8 mph12 km/h | 50% | 0% | 4 |
| Sun 3p | Sunny | 60°16° (likely 58°14° to 61°16°) | 60°16° | 0% | 6 mph10 km/h from S, gusts 8 mph13 km/h | 51% | 1% | 3 |
| Sun 4p | Sunny | 58°14° (likely 56°13° to 59°15°) | 58°14° | 0% | 7 mph11 km/h from S, gusts 10 mph15 km/h | 57% | 2% | 2 |
| Sun 5p | Sunny | 57°14° (likely 53°12° to 57°14°) | 57°14° | 0% | 7 mph11 km/h from S, gusts 12 mph20 km/h | 59% | 2% | 1 |
| Sun 6p | Clear | 53°12° (likely 49°9° to 53°12°) | 53°12° | 0% | 6 mph10 km/h from S, gusts 13 mph22 km/h | 69% | 6% | 0 |
| Sun 7p | Clear | 50°10° (likely 48°9° to 50°10°) | 48°9° | 0% | 6 mph10 km/h from S, gusts 13 mph21 km/h | 80% | 10% | 0 |
| Sun 8p | Clear | 46°8° (likely 46°8° to 50°10°) | 44°7° | 0% | 5 mph8 km/h from S, gusts 13 mph21 km/h | 93% | 13% | 0 |
| Sun 9p | Clear | 46°8° (likely 45°7° to 49°9°) | 45°7° | 0% | 3 mph5 km/h from SW, gusts 14 mph22 km/h | 93% | 11% | 0 |
| Sun 10p | Clear | 44°7° (likely 44°7° to 49°9°) | 41°5° | 0% | 5 mph8 km/h from SW, gusts 13 mph22 km/h | 100% | 6% | 0 |
| Sun 11p | Clear | 44°7° (likely 44°7° to 49°9°) | 41°5° | 0% | 5 mph8 km/h from SW, gusts 12 mph19 km/h | 100% | 2% | 0 |
| Mon 12a | Clear | 44°7° (likely 44°7° to 49°9°) | 41°5° | 0% | 5 mph8 km/h from SW, gusts 12 mph20 km/h | 100% | 1% | 0 |
| Mon 1a | Clear | 45°7° (likely 45°7° to 49°9°) | 43°6° | 0% | 5 mph8 km/h from SW, gusts 12 mph19 km/h | 96% | 1% | 0 |
| Mon 2a | Clear | 45°7° (likely 45°7° to 49°9°) | 43°6° | 0% | 5 mph8 km/h from SW, gusts 12 mph19 km/h | 96% | 2% | 0 |
| Mon 3a | Clear | 45°7° (likely 44°7° to 49°9°) | 43°6° | 0% | 5 mph8 km/h from SW, gusts 13 mph21 km/h | 93% | 3% | 0 |
| Mon 4a | Clear | 45°7° (likely 45°7° to 48°9°) | 43°6° | 0% | 5 mph8 km/h from SW, gusts 14 mph22 km/h | 100% | 5% | 0 |
| Mon 5a | Clear | 45°7° (likely 45°7° to 48°9°) | 42°6° | 0% | 6 mph10 km/h from SW, gusts 14 mph23 km/h | 100% | 0% | 0 |
| Mon 6a | Clear | 45°7° (likely 45°7° to 48°9°) | 42°6° | 0% | 6 mph10 km/h from SW, gusts 14 mph22 km/h | 100% | 0% | 0 |
| Mon 7a | Sunny | 46°8° (likely 45°7° to 48°9°) | 43°6° | 0% | 6 mph10 km/h from SW, gusts 14 mph23 km/h | 100% | 0% | 0 |
| Mon 8a | Sunny | 49°9° (likely 46°8° to 49°9°) | 46°8° | 0% | 7 mph11 km/h from SW, gusts 14 mph23 km/h | 93% | 2% | 0 |
| Mon 9a | Sunny | 52°11° (likely 50°10° to 53°12°) | 52°11° | 0% | 7 mph11 km/h from SW, gusts 15 mph24 km/h | 83% | 3% | 1 |
| Mon 10a | Sunny | 55°13° (likely 54°12° to 57°14°) | 55°13° | 0% | 7 mph11 km/h from W, gusts 16 mph26 km/h | 77% | 0% | 2 |
| Mon 11a | Sunny | 57°14° (likely 56°13° to 60°16°) | 57°14° | 0% | 8 mph13 km/h from W, gusts 16 mph27 km/h | 72% | 16% | 3 |
| Mon 12p | Sunny | 59°15° (likely 58°14° to 63°17°) | 59°15° | 0% | 8 mph13 km/h from W, gusts 15 mph25 km/h | 69% | 13% | 4 |
| Mon 1p | Sunny | 60°16° (likely 59°15° to 64°18°) | 60°16° | 0% | 8 mph13 km/h from W, gusts 15 mph25 km/h | 67% | 12% | 4 |
| Mon 2p | Sunny | 61°16° (likely 60°16° to 65°18°) | 61°16° | 0% | 8 mph13 km/h from W, gusts 14 mph23 km/h | 67% | 4% | 4 |
Days ahead
Shaded: typical range for these dates (1991–2020)
Today, Oct 24. Mostly sunny. High 56°13°, low 36°2°. Typical 59°15° / 43°6°. Dry. Mostly agree.
Afternoon
noon–6 PM
Sunny, 55°13°Dry
Evening
6 PM–midnight
Clear, 44°7°Dry
Overnight
midnight–6 AM
Clear, 39°4°Dry
Official NWS forecast
Today: Sunny, with a high near 56. Northwest wind around 5 mph.
Tonight: Patchy frost after 1am. Clear, with a low around 36. West wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 53°12°–57°14°
- Low, likely
- 36°2°–45°7°
- Typical high / low
- 59°15° / 43°6°
- Wind
- 9 mph14 km/h, gusts 16 mph26 km/h
- UV peak
- 4
Tomorrow, Oct 25. Sunny. High 61°16°, low 43°6°. Typical 58°14° / 43°6°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 44°7°Dry
Afternoon
noon–6 PM
Sunny, 61°16°Dry
Evening
6 PM–midnight
Clear, 46°8°Dry
Overnight
midnight–6 AM
Clear, 44°7°Dry
Official NWS forecast
Day: Patchy frost before 8am. Sunny, with a high near 61. Southwest wind 2 to 7 mph.
Night: Clear, with a low around 43. Southwest wind around 6 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 59°15°–61°16°
- Low, likely
- 41°5°–43°6°
- Typical high / low
- 58°14° / 43°6°
- Wind
- 9 mph14 km/h, gusts 18 mph29 km/h
- UV peak
- 4
Monday, Oct 26. Sunny. High 62°17°, low 43°6°. Typical 58°14° / 43°6°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 49°9°Dry
Afternoon
noon–6 PM
Sunny, 62°17°Dry
Evening
6 PM–midnight
Clear, 56°13°Dry
Overnight
midnight–6 AM
Clear, 52°11°Dry
Official NWS forecast
Day: Sunny, with a high near 62. Southwest wind around 8 mph.
Night: Mostly clear, with a low around 43. Northwest wind 5 to 13 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 60°16°–64°18°
- Low, likely
- 43°6°–48°9°
- Typical high / low
- 58°14° / 43°6°
- Wind
- 14 mph22 km/h, gusts 19 mph31 km/h
- UV peak
- 4
Tuesday, Oct 27. Mostly sunny. High 51°11°, low 40°4°. Typical 58°14° / 42°6°. Dry. Forecasts agree.
Morning
6 AM–noon
Mostly sunny, 50°10°Dry
Afternoon
noon–6 PM
Sunny, 49°9°Dry
Evening
6 PM–midnight
Clear, 45°7°Dry
Overnight
midnight–6 AM
Clear, 45°7°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 51. North wind 8 to 13 mph, with gusts as high as 23 mph.
Night: Mostly clear, with a low around 40. Northeast wind 3 to 7 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 51°11°–58°14°
- Low, likely
- 40°4°–46°8°
- Typical high / low
- 58°14° / 42°6°
- Wind
- 20 mph33 km/h, gusts 31 mph50 km/h
- UV peak
- 4
Wednesday, Oct 28. Mostly sunny. High 51°11°, low 43°6°. Typical 58°14° / 42°6°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 45°7°Dry
Afternoon
noon–6 PM
Sunny, 51°11°Dry
Evening
6 PM–midnight
Clear, 46°8°Dry
Overnight
midnight–6 AM
Mostly clear, 46°8°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 51. Northeast wind around 5 mph.
Night: Mostly clear, with a low around 43. South wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 50°10°–52°11°
- Low, likely
- 43°6°–45°7°
- Typical high / low
- 58°14° / 42°6°
- Wind
- 11 mph17 km/h
- UV peak
- 4
Thursday, Oct 29. Mostly sunny. High 59°15°, low 51°11°. Typical 57°14° / 42°6°. Dry. Mostly agree.
Morning
6 AM–noon
Mostly sunny, 49°10°Dry
Afternoon
noon–6 PM
Sunny, 58°15°Dry
Evening
6 PM–midnight
Clear, 54°12°Dry
Overnight
midnight–6 AM
Clear, 54°12°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 59. Southwest wind 5 to 12 mph.
Night: Mostly clear, with a low around 51. Southwest wind around 10 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 56°13°–60°16°
- Low, likely
- 43°6°–51°11°
- Typical high / low
- 57°14° / 42°6°
- Wind
- 20 mph32 km/h, gusts 26 mph42 km/h
- UV peak
- 4
Friday, Oct 30. Mostly sunny. High 62°17°, low 49°9°. Typical 57°14° / 42°6°. Dry. Forecasts agree.
Morning
6 AM–noon
Sunny, 54°12°Dry
Afternoon
noon–6 PM
Sunny, 64°18°Dry
Evening
6 PM–midnight
Clear, 56°13°Dry
Overnight
midnight–6 AM
Clear, 54°12°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 62. West wind 6 to 9 mph.
Night: Mostly clear, with a low around 49. Northwest wind around 6 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 62°17°–65°18°
- Low, likely
- 49°9°–55°13°
- Typical high / low
- 57°14° / 42°6°
- Wind
- 17 mph28 km/h, gusts 26 mph42 km/h
- UV peak
- 4
Saturday, Oct 31. Cloudy. High 58°14°, low 51°11°. Typical 57°14° / 41°5°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 55°13°Dry
Afternoon
noon–6 PM
Sunny, 59°15°Dry
Evening
6 PM–midnight
Clear, 53°12°Dry
Overnight
midnight–6 AM
Cloudy, 51°11°Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 56°13°–61°16°
- Low, likely
- 50°10°–55°13°
- Typical high / low
- 57°14° / 41°5°
- Wind
- 12 mph20 km/h, gusts 27 mph44 km/h
- UV peak
- 3
Sunday, Nov 1. Cloudy. High 62°17°, low 51°11°. Typical 56°13° / 41°5°. Rain 0.01 in0.3 mm, 20% chance. Mostly agree.
Morning
6 AM–noon
Mostly sunny, 52°11°Dry
Afternoon
noon–6 PM
Mostly sunny, 61°16°Dry
Evening
6 PM–midnight
Cloudy, 58°14°20% chance
Overnight
midnight–6 AM
Drizzle, 58°14°40% chance · 0.06 in1.5 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 59°15°–63°17°
- Low, likely
- 47°8°–55°13°
- Typical high / low
- 56°13° / 41°5°
- Wind
- 17 mph27 km/h, gusts 23 mph36 km/h
- UV peak
- 4
Monday, Nov 2. Drizzle. High 64°18°, low 57°14°. Typical 56°13° / 41°5°. Rain 0.16 in4.1 mm, 40% chance. Forecasts agree.
Morning
6 AM–noon
Rain, 59°15°40% chance · 0.08 in2 mm
Afternoon
noon–6 PM
Drizzle, 64°18°30% chance · 0.02 in0.5 mm
Evening
6 PM–midnight
Drizzle, 60°16°20% chance · 0.03 in0.7 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 64°18°
- Low, likely
- 55°13°–61°16°
- Typical high / low
- 56°13° / 41°5°
- Wind
- 25 mph40 km/h
- UV peak
- 3
The outlook
Today
Dry, high 56°, low 36°.
Tomorrow
Dry, high 61°, low 43°, warming up.
Monday
Dry, high 62°, low 43°.
Rest of week
Mostly dry, highs 51–64°.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (BOX) (opens in a new tab)
What changed since yesterday
No meaningful changes from yesterday’s forecast.
Radar
Radar data: NOAA MRMS, rendered by forecast.blue
Radar loads when scrolled into view
Rivers
NOAA river gauges within 25 mi
Below flood stage
Atlantic Coast at Chatham Harbor (IN MLLW)
11 mi- Level
- 4.3 ft
Forecast peak 5.8 ft Mon 12 PM
Reading from Sat 1:30 PM · NWS gauge page
Atlantic Coast at Provincetown Harbor (IN MLLW)
22 mi- Level
- 6.1 ft
Forecast peak 10.7 ft Mon 12 PM
Reading from Sat 1:30 PM · NWS gauge page
Herring River at North Harwich
3.6 mi- Level
- 1.7 ft
- Flow
- 3 cfs
Reading from Sat 12:45 PM · NWS gauge page
For your home
What this week’s weather means for heating, cooling, pipes and fresh air.
Heating this week
About 70% less heating than a typical week.
This week 32Typical 104
Heating degree days, base 65°F
Heat-pump hours, next 7 days
- h below 47°F
- 25
- h below 17°F
- 0
- h below 5°F
- 0
47, 17 and 5°F are the test points heat pumps are rated at. About 7 hours are near freezing and damp, when outdoor units defrost more often.
Comfort
Dry air outside (dew point 39°F).
Open the windows?
Sun, 1:00 PM–3:00 PM
Good stretch to open the windows.
Is this typical?
HYANNIS · official normals 1991–2020 · records 1893–2026
Oct 24, today vs a typical year
Today’s expected high is 3°2° colder than typical.
- Normal high / low
- 59°15° / 43°6°
- Forecast high / low
- 56°13° / 36°2°
- Record high
- 74°23° in 1978
- Record low
- 26°−3° in 1969
Last 7 days vs normal
On average 2°1° colder than normal (daily mean temperature).
- −6°−4°SunOct 18
- −8°−4°MonOct 19
- −4°−2°TueOct 20
- +4°+2°WedOct 21
- +4°+2°ThuOct 22
- +2°+1°FriOct 23
- —SatOct 24
East Dennis weather by month: normals, records, snow and freeze dates
Sun & moon
Sun
Sunrise 7:03 AM, sunset 5:45 PM.
- Daylight
- 10 h 42 min
- Losing 2 min 35 s a day; shortest Dec 21, 1 h 34 min less
- Golden hour
- 5:07–6:03 PM
- Morning 6:45–7:41 AM
- Blue hour
- 6:03–6:14 PM
- Morning 6:34–6:45 AM; first light 6:34 AM
Stars tonight? Fair
Clear 6:14 PM–6:35 AM, but the moon is 99% lit and up.
Moon
Waxing gibbous
97% lit · growing
- Today
- sets 5:12 AM · rises 4:42 PM
- Full moon
- Oct 26
- New moon
- Nov 9
