Atlantic Coast at Portland (IN MLLW)
17 mi- Level
- 4.9 ft
Forecast peak 10.1 ft Sat 10 AM
Reading from Sat 6:36 AM · NWS gauge page
Appearance
Observed 7:50 AM EDT at KPWM
Sunny and 32°0°.
Today: low 29°−2° (likely 27°−3° to 35°2°), high 56°13° (likely 53°12° to 58°14°).
Now 32°0°
Sunny · Feels like 28°−2°
No precipitation expected in the next 2 hours.
From forecast models
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 8a | Sunny | 33°1° (likely 29°−2° to 36°2°) | 30°−1° | 0% | 5 mph8 km/h from NW, gusts 9 mph14 km/h | 85% | 4% | 0 |
| Sat 9a | Sunny | 37°3° (likely 37°3° to 41°5°) | 34°1° | 0% | 5 mph8 km/h from NW, gusts 7 mph12 km/h | 75% | 3% | 0 |
| Sat 10a | Sunny | 45°7° (likely 45°7° to 46°8°) | 45°7° | 0% | 0 mph0 km/h, gusts 7 mph11 km/h | 58% | 2% | 1 |
| Sat 11a | Sunny | 49°9° (likely 49°9° to 52°11°) | 49°9° | 0% | 0 mph0 km/h, gusts 7 mph12 km/h | 50% | 1% | 2 |
| Sat 12p | Sunny | 51°11° (likely 51°11° to 55°13°) | 51°11° | 0% | 0 mph0 km/h, gusts 8 mph12 km/h | 44% | 2% | 3 |
| Sat 1p | Sunny | 53°12° (likely 53°12° to 57°14°) | 53°12° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 41% | 0% | 3 |
| Sat 2p | Sunny | 54°12° (likely 52°11° to 58°14°) | 54°12° | 0% | 5 mph8 km/h from S, gusts 7 mph11 km/h | 43% | 0% | 2 |
| Sat 3p | Sunny | 54°12° (likely 52°11° to 58°14°) | 54°12° | 0% | 5 mph8 km/h from S, gusts 7 mph12 km/h | 45% | 0% | 2 |
| Sat 4p | Sunny | 54°12° (likely 52°11° to 55°13°) | 54°12° | 0% | 5 mph8 km/h from S, gusts 9 mph14 km/h | 48% | 0% | 1 |
| Sat 5p | Sunny | 52°11° (likely 51°11° to 52°11°) | 52°11° | 0% | 5 mph8 km/h from S, gusts 9 mph14 km/h | 56% | 0% | 0 |
| Sat 6p | Clear | 50°10° (likely 46°8° to 50°10°) | 49°9° | 0% | 5 mph8 km/h from S, gusts 9 mph14 km/h | 63% | 0% | 0 |
| Sat 7p | Clear | 47°8° (likely 43°6° to 48°9°) | 46°8° | 0% | 5 mph8 km/h from SW, gusts 8 mph13 km/h | 71% | 0% | 0 |
| Sat 8p | Clear | 44°7° (likely 41°5° to 47°8°) | 42°6° | 0% | 5 mph8 km/h from SW, gusts 8 mph13 km/h | 82% | 0% | 0 |
| Sat 9p | Clear | 43°6° (likely 39°4° to 47°8°) | 43°6° | 0% | 0 mph0 km/h, gusts 9 mph14 km/h | 82% | 0% | 0 |
| Sat 10p | Clear | 41°5° (likely 39°4° to 45°7°) | 41°5° | 0% | 0 mph0 km/h, gusts 8 mph14 km/h | 79% | 1% | 0 |
| Sat 11p | Clear | 39°4° (likely 38°3° to 43°6°) | 39°4° | 0% | 0 mph0 km/h, gusts 8 mph12 km/h | 82% | 1% | 0 |
| Sun 12a | Clear | 38°3° (likely 37°3° to 42°6°) | 38°3° | 0% | 0 mph0 km/h, gusts 8 mph12 km/h | 79% | 0% | 0 |
| Sun 1a | Clear | 36°2° (likely 36°2° to 41°5°) | 36°2° | 0% | 0 mph0 km/h, gusts 6 mph9 km/h | 85% | 0% | 0 |
| Sun 2a | Clear | 35°2° (likely 34°1° to 40°4°) | 35°2° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 85% | 1% | 0 |
| Sun 3a | Clear | 33°1° (likely 33°1° to 40°4°) | 33°1° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 92% | 3% | 0 |
| Sun 4a | Clear | 32°0° (likely 32°0° to 39°4°) | 32°0° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 92% | 3% | 0 |
| Sun 5a | Clear | 30°−1° (likely 30°−1° to 39°4°) | 30°−1° | 0% | 0 mph0 km/h, gusts 6 mph9 km/h | 100% | 0% | 0 |
| Sun 6a | Clear | 29°−2° (likely 29°−2° to 38°3°) | 29°−2° | 0% | 0 mph0 km/h, gusts 5 mph8 km/h | 100% | 1% | 0 |
| Sun 7a | Sunny | 29°−2° (likely 29°−2° to 37°3°) | 29°−2° | 0% | 0 mph0 km/h, gusts 4 mph7 km/h | 100% | 1% | 0 |
| Sun 8a | Sunny | 35°2° (likely 33°1° to 39°4°) | 35°2° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 89% | 2% | 0 |
| Sun 9a | Sunny | 41°5° (likely 40°4° to 44°7°) | 41°5° | 0% | 0 mph0 km/h, gusts 5 mph8 km/h | 79% | 1% | 1 |
| Sun 10a | Sunny | 47°8° (likely 47°8° to 50°10°) | 47°8° | 0% | 0 mph0 km/h, gusts 6 mph9 km/h | 65% | 1% | 2 |
| Sun 11a | Sunny | 51°11° (likely 51°11° to 56°13°) | 51°11° | 0% | 0 mph0 km/h, gusts 6 mph9 km/h | 59% | 0% | 3 |
| Sun 12p | Sunny | 54°12° (likely 53°12° to 60°16°) | 54°12° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 57% | 0% | 4 |
| Sun 1p | Sunny | 56°13° (likely 53°12° to 62°17°) | 56°13° | 0% | 5 mph8 km/h from S, gusts 8 mph14 km/h | 55% | 0% | 4 |
| Sun 2p | Sunny | 57°14° (likely 54°12° to 61°16°) | 57°14° | 0% | 5 mph8 km/h from S, gusts 10 mph17 km/h | 53% | 0% | 4 |
| Sun 3p | Sunny | 56°13° (likely 55°13° to 60°16°) | 56°13° | 0% | 5 mph8 km/h from S, gusts 13 mph21 km/h | 57% | 0% | 3 |
| Sun 4p | Sunny | 57°14° (likely 54°12° to 58°14°) | 57°14° | 0% | 5 mph8 km/h from S, gusts 14 mph23 km/h | 57% | 0% | 2 |
| Sun 5p | Sunny | 55°13° (likely 53°12° to 55°13°) | 55°13° | 0% | 5 mph8 km/h from S, gusts 15 mph24 km/h | 64% | 0% | 1 |
| Sun 6p | Clear | 53°12° (likely 49°9° to 53°12°) | 53°12° | 0% | 5 mph8 km/h from S, gusts 14 mph22 km/h | 71% | 0% | 0 |
| Sun 7p | Clear | 51°11° (likely 47°8° to 52°11°) | 51°11° | 0% | 5 mph8 km/h from SW, gusts 14 mph23 km/h | 74% | 0% | 0 |
| Sun 8p | Clear | 48°9° (likely 45°7° to 51°11°) | 45°7° | 0% | 5 mph8 km/h from SW, gusts 15 mph23 km/h | 83% | 0% | 0 |
| Sun 9p | Clear | 47°8° (likely 44°7° to 50°10°) | 45°7° | 0% | 5 mph8 km/h from SW, gusts 14 mph23 km/h | 79% | 0% | 0 |
| Sun 10p | Clear | 46°8° (likely 44°7° to 50°10°) | 44°7° | 0% | 5 mph8 km/h from SW, gusts 14 mph22 km/h | 76% | 0% | 0 |
| Sun 11p | Clear | 44°7° (likely 43°6° to 49°9°) | 41°5° | 0% | 5 mph8 km/h from SW, gusts 14 mph23 km/h | 79% | 1% | 0 |
| Mon 12a | Clear | 43°6° (likely 41°5° to 47°8°) | 40°4° | 0% | 5 mph8 km/h from SW, gusts 13 mph21 km/h | 79% | 19% | 0 |
| Mon 1a | Clear | 41°5° (likely 39°4° to 45°7°) | 38°3° | 0% | 5 mph8 km/h from SW, gusts 10 mph17 km/h | 82% | 30% | 0 |
| Mon 2a | Clear | 40°4° (likely 38°3° to 45°7°) | 37°3° | 0% | 5 mph8 km/h from SW, gusts 10 mph17 km/h | 82% | 2% | 0 |
| Mon 3a | Clear | 39°4° (likely 35°2° to 43°6°) | 36°2° | 0% | 5 mph8 km/h from SW, gusts 5 mph8 km/h | 82% | 1% | 0 |
| Mon 4a | Mostly clear | 38°3° (likely 34°1° to 42°6°) | 36°2° | 0% | 5 mph8 km/h from W, gusts 4 mph7 km/h | 82% | 6% | 0 |
| Mon 5a | Mostly clear | 37°3° (likely 33°1° to 42°6°) | 34°1° | 0% | 5 mph8 km/h from W, gusts 4 mph7 km/h | 82% | 14% | 0 |
| Mon 6a | Mostly clear | 36°2° (likely 32°0° to 41°5°) | 33°1° | 0% | 5 mph8 km/h from W, gusts 4 mph6 km/h | 85% | 27% | 0 |
| Mon 7a | Mostly sunny | 37°3° (likely 31°−1° to 41°5°) | 34°1° | 0% | 5 mph8 km/h from W, gusts 3 mph5 km/h | 82% | 29% | 0 |
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Official NWS forecast
Today: Sunny, with a high near 56. West wind 0 to 5 mph.
Tonight: Clear, with a low around 29. West wind 0 to 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Official NWS forecast
Day: Sunny, with a high near 59. West wind 0 to 5 mph.
Night: Clear, with a low around 36. Southwest wind around 5 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 66. Southwest wind 0 to 5 mph.
Night: Mostly clear, with a low around 35.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 51.
Night: Mostly clear, with a low around 31.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 50.
Night: Mostly clear, with a low around 36.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 58.
Night: Mostly clear, with a low around 47.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 63.
Night: Partly cloudy, with a low around 41.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
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.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
20% chance
Overnight
midnight–6 AM
30% chance
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 differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
30% chance
Afternoon
noon–6 PM
30% chance
Evening
6 PM–midnight
30% chance
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 differIndependent forecasts disagree; expect changes and plan for the range.
Dry, high 56°, low 29°.
Dry, high 59°, low 36°, warming up.
Dry, high 66°, low 35°, warming up.
Mostly dry, highs 50–63°.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (GYX) (opens in a new tab)
No meaningful changes from yesterday’s forecast.
Forecast peak 10.1 ft Sat 10 AM
Reading from Sat 6:36 AM · NWS gauge page
Reading from Sat 6:42 AM · NWS gauge page
Reading from Sat 6:30 AM · NWS gauge page
Reading from Sat 6:30 AM · NWS gauge page
What this week’s weather means for heating, cooling, pipes and fresh air.
About 69% less heating than a typical week.
Heating degree days, base 65°F
47, 17 and 5°F are the test points heat pumps are rated at. About 16 hours are near freezing and damp, when outdoor units defrost more often.
Dry air outside (dew point 28°F). Indoor air will run dry too — a humidifier keeping indoor relative humidity in the 30–50% range is more comfortable and cuts static shocks, without going so high it fogs cold windows.
No stretch in the next few days is comfortable enough outside, by temperature, dew point and air quality.
Today’s expected high is about typical for the date.
On average 2°1° colder than normal (daily mean temperature).
Biddeford weather by month: normals, records, snow and freeze dates
Sunrise 7:06 AM, sunset 5:44 PM.
Clear 6:13 PM–6:38 AM, but the moon is 99% lit and up.
Waxing gibbous
96% lit · growing