Atlantic Coast at Portland (IN MLLW)
3.5 mi- Level
- 10.2 ft
Forecast peak 10.1 ft Mon 11 AM
Reading from Sat 10:30 AM · NWS gauge page
Observed 11:30 AM EDT at KPWM
Portland, ME weather
Sunny and 52°11°.
Today: low 42°6° (likely 31°−1° to 42°6°), high 54°12° (likely 54°12° to 57°14°).
Now 52°11°
Sunny
- Wind
- 3 mph5 km/h
- From the west. 35–5 mph8 km/h through 11 PM
- Dew point
- 28°−2°
- Dry · up to 38°3° by 3 PM (comfortable)
- UV index
- 4Moderate
- Moderate until 4 PM
- Air quality
- 23Good
- Main pollutant: PM2.5 (fine particles)
- Pressure
- 30.53 inHg1034 hPa
- Falling slowly · −0.03 inHg−0.9 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 afternoonUp to 54°12° by 4 PM · Clear
TonightDown to 43°6° by 4 AM · Clear
Tomorrow morningUp to 50°10° by 11 AM · Clear
Tomorrow afternoonNear 53°12° · Clear
Tomorrow nightDown to 44°7° by 5 AM · Clear
Monday morningUp to 49°9° by 10 AM · Partly cloudy
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 11a | Sunny | 47°8° (likely 47°8° to 50°10°) | 46°8° | 0% | 5 mph8 km/h from NW, gusts 7 mph11 km/h | 65% | 3% | 3 |
| Sat 12p | Sunny | 49°9° (likely 49°9° to 54°12°) | 48°9° | 0% | 5 mph8 km/h from W, gusts 8 mph13 km/h | 61% | 1% | 4 |
| Sat 1p | Sunny | 51°11° (likely 51°11° to 56°13°) | 51°11° | 0% | 5 mph8 km/h from S, gusts 8 mph13 km/h | 56% | 0% | 4 |
| Sat 2p | Sunny | 52°11° (likely 52°11° to 57°14°) | 52°11° | 0% | 5 mph8 km/h from S, gusts 7 mph11 km/h | 54% | 0% | 3 |
| Sat 3p | Sunny | 52°11° (likely 52°11° to 57°14°) | 52°11° | 0% | 5 mph8 km/h from S, gusts 5 mph8 km/h | 59% | 0% | 3 |
| Sat 4p | Sunny | 54°12° (likely 54°12° to 56°13°) | 54°12° | 0% | 5 mph8 km/h from S, gusts 7 mph12 km/h | 57% | 0% | 2 |
| Sat 5p | Sunny | 52°11° (likely 52°11° to 54°12°) | 52°11° | 0% | 5 mph8 km/h from S, gusts 9 mph14 km/h | 61% | 0% | 1 |
| Sat 6p | Clear | 52°11° (likely 48°9° to 52°11°) | 52°11° | 0% | 5 mph8 km/h from SW, gusts 10 mph16 km/h | 66% | 0% | 0 |
| Sat 7p | Clear | 51°11° (likely 45°7° to 51°11°) | 51°11° | 0% | 5 mph8 km/h from SW, gusts 10 mph16 km/h | 71% | 0% | 0 |
| Sat 8p | Clear | 51°11° (likely 43°6° to 51°11°) | 51°11° | 0% | 5 mph8 km/h from SW, gusts 10 mph16 km/h | 71% | 0% | 0 |
| Sat 9p | Clear | 50°10° (likely 41°5° to 50°10°) | 48°9° | 0% | 5 mph8 km/h from W, gusts 10 mph16 km/h | 71% | 0% | 0 |
| Sat 10p | Clear | 48°9° (likely 40°4° to 48°9°) | 46°8° | 0% | 5 mph8 km/h from W, gusts 9 mph14 km/h | 77% | 0% | 0 |
| Sat 11p | Clear | 47°8° (likely 38°3° to 47°8°) | 46°8° | 0% | 5 mph8 km/h from W, gusts 8 mph13 km/h | 76% | 1% | 0 |
| Sun 12a | Clear | 46°8° (likely 38°3° to 46°8°) | 45°7° | 0% | 5 mph8 km/h from NW, gusts 7 mph11 km/h | 76% | 1% | 0 |
| Sun 1a | Clear | 45°7° (likely 38°3° to 45°7°) | 44°7° | 0% | 5 mph8 km/h from NW, gusts 5 mph8 km/h | 76% | 1% | 0 |
| Sun 2a | Clear | 44°7° (likely 37°3° to 44°7°) | 42°6° | 0% | 5 mph8 km/h from NW, gusts 5 mph8 km/h | 76% | 5% | 0 |
| Sun 3a | Clear | 44°7° (likely 36°2° to 44°7°) | 42°6° | 0% | 5 mph8 km/h from NW, gusts 5 mph8 km/h | 76% | 12% | 0 |
| Sun 4a | Clear | 43°6° (likely 36°2° to 43°6°) | 41°5° | 0% | 5 mph8 km/h from NW, gusts 5 mph8 km/h | 79% | 12% | 0 |
| Sun 5a | Clear | 43°6° (likely 36°2° to 43°6°) | 41°5° | 0% | 5 mph8 km/h from NW, gusts 7 mph12 km/h | 79% | 13% | 0 |
| Sun 6a | Clear | 43°6° (likely 35°2° to 43°6°) | 41°5° | 0% | 5 mph8 km/h from NW, gusts 6 mph10 km/h | 79% | 14% | 0 |
| Sun 7a | Sunny | 42°6° (likely 34°1° to 42°6°) | 42°6° | 0% | 0 mph0 km/h, gusts 6 mph9 km/h | 82% | 16% | 0 |
| Sun 8a | Sunny | 42°6° (likely 35°2° to 42°6°) | 40°4° | 0% | 5 mph8 km/h from NW, gusts 6 mph9 km/h | 82% | 17% | 0 |
| Sun 9a | Sunny | 44°7° (likely 41°5° to 44°7°) | 44°7° | 0% | 0 mph0 km/h, gusts 6 mph9 km/h | 79% | 4% | 1 |
| Sun 10a | Sunny | 47°8° (likely 47°8° to 50°10°) | 47°8° | 0% | 0 mph0 km/h, gusts 6 mph9 km/h | 74% | 2% | 2 |
| Sun 11a | Sunny | 50°10° (likely 50°10° to 56°13°) | 50°10° | 0% | 0 mph0 km/h, gusts 5 mph8 km/h | 68% | 0% | 3 |
| Sun 12p | Sunny | 52°11° (likely 51°11° to 59°15°) | 52°11° | 0% | 5 mph8 km/h from S, gusts 4 mph7 km/h | 66% | 0% | 4 |
| Sun 1p | Sunny | 54°12° (likely 52°11° to 61°16°) | 54°12° | 0% | 5 mph8 km/h from S, gusts 7 mph10 km/h | 64% | 0% | 4 |
| Sun 2p | Sunny | 54°12° (likely 54°12° to 61°16°) | 54°12° | 0% | 5 mph8 km/h from S, gusts 10 mph16 km/h | 64% | 0% | 4 |
| Sun 3p | Sunny | 54°12° (likely 54°12° to 60°16°) | 54°12° | 0% | 5 mph8 km/h from S, gusts 12 mph20 km/h | 66% | 0% | 3 |
| Sun 4p | Sunny | 55°13° (likely 54°12° to 58°14°) | 55°13° | 0% | 10 mph16 km/h from S, gusts 14 mph23 km/h | 66% | 0% | 2 |
| Sun 5p | Sunny | 54°12° (likely 52°11° to 56°13°) | 54°12° | 0% | 10 mph16 km/h from S, gusts 16 mph25 km/h | 69% | 0% | 1 |
| Sun 6p | Clear | 54°12° (likely 50°10° to 54°12°) | 54°12° | 0% | 10 mph16 km/h from S, gusts 14 mph23 km/h | 71% | 0% | 0 |
| Sun 7p | Clear | 54°12° (likely 48°9° to 54°12°) | 54°12° | 0% | 10 mph16 km/h from S, gusts 14 mph23 km/h | 74% | 0% | 0 |
| Sun 8p | Clear | 53°12° (likely 46°8° to 53°12°) | 53°12° | 0% | 10 mph16 km/h from SW, gusts 15 mph24 km/h | 77% | 0% | 0 |
| Sun 9p | Clear | 52°11° (likely 46°8° to 52°11°) | 52°11° | 0% | 10 mph16 km/h from SW, gusts 15 mph25 km/h | 77% | 0% | 0 |
| Sun 10p | Clear | 51°11° (likely 45°7° to 51°11°) | 51°11° | 0% | 10 mph16 km/h from SW, gusts 15 mph25 km/h | 80% | 6% | 0 |
| Sun 11p | Clear | 50°10° (likely 43°6° to 50°10°) | 47°8° | 0% | 10 mph16 km/h from SW, gusts 14 mph23 km/h | 80% | 40% | 0 |
| Mon 12a | Clear | 49°9° (likely 42°6° to 49°9°) | 46°8° | 0% | 5 mph8 km/h from SW, gusts 14 mph23 km/h | 77% | 40% | 0 |
| Mon 1a | Clear | 48°9° (likely 40°4° to 48°9°) | 45°7° | 0% | 5 mph8 km/h from SW, gusts 14 mph22 km/h | 77% | 38% | 0 |
| Mon 2a | Clear | 46°8° (likely 38°3° to 47°8°) | 43°6° | 0% | 5 mph8 km/h from SW, gusts 13 mph22 km/h | 76% | 1% | 0 |
| Mon 3a | Clear | 46°8° (likely 38°3° to 46°8°) | 43°6° | 0% | 5 mph8 km/h from SW, gusts 13 mph20 km/h | 73% | 4% | 0 |
| Mon 4a | Clear | 45°7° (likely 37°3° to 45°7°) | 43°6° | 0% | 5 mph8 km/h from W, gusts 11 mph18 km/h | 76% | 6% | 0 |
| Mon 5a | Mostly clear | 44°7° (likely 36°2° to 44°7°) | 41°5° | 0% | 5 mph8 km/h from W, gusts 10 mph17 km/h | 79% | 12% | 0 |
| Mon 6a | Mostly clear | 44°7° (likely 36°2° to 44°7°) | 41°5° | 0% | 5 mph8 km/h from W, gusts 7 mph11 km/h | 76% | 13% | 0 |
| Mon 7a | Mostly sunny | 44°7° (likely 34°1° to 44°7°) | 42°6° | 0% | 5 mph8 km/h from W, gusts 5 mph8 km/h | 76% | 47% | 0 |
| Mon 8a | Mostly sunny | 44°7° (likely 35°2° to 44°7°) | 42°6° | 0% | 5 mph8 km/h from W, gusts 6 mph10 km/h | 76% | 40% | 0 |
| Mon 9a | Mostly sunny | 46°8° (likely 40°4° to 49°9°) | 45°7° | 0% | 5 mph8 km/h from W, gusts 4 mph6 km/h | 73% | 49% | 1 |
| Mon 10a | Mostly sunny | 49°9° (likely 44°7° to 55°13°) | 48°9° | 0% | 5 mph8 km/h from W, gusts 4 mph6 km/h | 68% | 52% | 2 |
Days ahead
Shaded: typical range for these dates (1991–2020)
Today, Oct 24. Sunny. High 54°12°, low 42°6°. Typical 57°14° / 38°3°. Dry. Mostly agree.
Afternoon
noon–6 PM
Sunny, 54°12°Dry
Evening
6 PM–midnight
Clear, 51°11°Dry
Overnight
midnight–6 AM
Clear, 43°6°Dry
Official NWS forecast
Today: Sunny, with a high near 54. Southwest wind around 5 mph.
Tonight: Clear, with a low around 42. West wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 54°12°–57°14°
- Low, likely
- 31°−1°–42°6°
- Typical high / low
- 57°14° / 38°3°
- Wind
- 9 mph15 km/h
- UV peak
- 4
Tomorrow, Oct 25. Sunny. High 56°13°, low 44°7°. Typical 56°13° / 38°3°. Dry. Forecasts differ.
Morning
6 AM–noon
Sunny, 42°6°Dry
Afternoon
noon–6 PM
Sunny, 55°13°Dry
Evening
6 PM–midnight
Clear, 53°12°Dry
Overnight
midnight–6 AM
Clear, 44°7°Dry
Official NWS forecast
Day: Sunny, with a high near 56. Southwest wind 0 to 10 mph.
Night: Mostly clear, with a low around 44. Southwest wind 5 to 10 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 54°12°–61°16°
- Low, likely
- 34°1°–44°7°
- Typical high / low
- 56°13° / 38°3°
- Wind
- 12 mph19 km/h, gusts 21 mph33 km/h
- UV peak
- 4
Monday, Oct 26. Mostly sunny. High 60°16°, low 41°5°. Typical 56°13° / 38°3°. Dry. Forecasts differ.
Morning
6 AM–noon
Mostly sunny, 44°7°Dry
Afternoon
noon–6 PM
Partly sunny, 63°17°Dry
Evening
6 PM–midnight
Mostly clear, 54°12°Dry
Overnight
midnight–6 AM
Clear, 42°5°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 60. Southwest wind 0 to 5 mph.
Night: Mostly clear, with a low around 41.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 58°14°–68°20°
- Low, likely
- 34°1°–43°6°
- Typical high / low
- 56°13° / 38°3°
- Wind
- 15 mph23 km/h, gusts 22 mph36 km/h
- UV peak
- 4
Tuesday, Oct 27. Sunny. High 50°10°, low 37°3°. Typical 56°13° / 38°3°. Dry. Forecasts agree.
Morning
6 AM–noon
Sunny, 39°4°Dry
Afternoon
noon–6 PM
Sunny, 50°10°Dry
Evening
6 PM–midnight
Clear, 41°5°Dry
Overnight
midnight–6 AM
Clear, 33°0°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 37.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 50°10°–52°11°
- Low, likely
- 36°2°–40°4°
- Typical high / low
- 56°13° / 38°3°
- Wind
- 14 mph23 km/h, gusts 23 mph37 km/h
- UV peak
- 4
Wednesday, Oct 28. Mostly sunny. High 50°10°, low 42°6°. Typical 55°13° / 37°3°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 33°0°Dry
Afternoon
noon–6 PM
Sunny, 50°10°Dry
Evening
6 PM–midnight
Mostly clear, 43°6°Dry
Overnight
midnight–6 AM
Clear, 40°4°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 42.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 47°8°–51°11°
- Low, likely
- 28°−2°–42°6°
- Typical high / low
- 55°13° / 37°3°
- Wind
- 12 mph19 km/h, gusts 18 mph29 km/h
- UV peak
- 4
Thursday, Oct 29. Mostly sunny. High 56°13°, low 50°10°. Typical 55°13° / 37°3°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 42°5°Dry
Afternoon
noon–6 PM
Sunny, 61°16°Dry
Evening
6 PM–midnight
Clear, 55°13°Dry
Overnight
midnight–6 AM
Clear, 50°10°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 56.
Night: Mostly clear, with a low around 50.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 56°13°–63°17°
- Low, likely
- 37°3°–50°10°
- Typical high / low
- 55°13° / 37°3°
- Wind
- 14 mph23 km/h, gusts 28 mph45 km/h
- UV peak
- 3
Friday, Oct 30. Partly sunny. High 60°16°, low 46°8°. Typical 54°12° / 37°3°. Dry. Mostly agree. Best day outdoors this week.
Morning
6 AM–noon
Sunny, 51°10°Dry
Afternoon
noon–6 PM
Sunny, 65°18°Dry
Evening
6 PM–midnight
Clear, 54°12°Dry
Overnight
midnight–6 AM
Partly cloudy, 44°7°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 60.
Night: Partly cloudy, with a low around 46.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Best day outdoors this week: the one dry, mild day the forecasts agree on (high 60°16°).
- High, likely
- 60°16°–67°19°
- Low, likely
- 45°7°–51°11°
- Typical high / low
- 54°12° / 37°3°
- Wind
- 11 mph18 km/h, gusts 26 mph41 km/h
- UV peak
- 3
Saturday, Oct 31. Cloudy. High 58°14°, low 45°7°. Typical 54°12° / 36°2°. Dry. Forecasts differ.
Morning
6 AM–noon
Sunny, 43°6°Dry
Afternoon
noon–6 PM
Sunny, 58°15°Dry
Evening
6 PM–midnight
Mostly clear, 49°10°Dry
Overnight
midnight–6 AM
Clear, 45°7°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.
- High, likely
- 53°12°–65°18°
- Low, likely
- 40°4°–48°9°
- Typical high / low
- 54°12° / 36°2°
- Wind
- 11 mph18 km/h, gusts 26 mph41 km/h
- UV peak
- 3
Sunday, Nov 1. Cloudy. High 58°14°, low 46°8°. Typical 54°12° / 36°2°. Rain, 20% chance. Forecasts differ.
Morning
6 AM–noon
Sunny, 45°7°Dry
Afternoon
noon–6 PM
Cloudy, 58°14°Dry
Evening
6 PM–midnight
Clear, 52°11°20% chance
Overnight
midnight–6 AM
Cloudy, 47°8°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.
- High, likely
- 50°10°–63°17°
- Low, likely
- 36°2°–53°12°
- Typical high / low
- 54°12° / 36°2°
- Wind
- 12 mph19 km/h
- UV peak
- 3
Monday, Nov 2. Cloudy. High 57°14°, low 47°8°. Typical 53°12° / 36°2°. Rain 0.07 in1.8 mm, 30% chance. Forecasts differ.
Morning
6 AM–noon
Partly sunny, 49°9°30% chance
Afternoon
noon–6 PM
Cloudy, 58°15°30% chance
Evening
6 PM–midnight
Cloudy, 51°11°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.
- High, likely
- 49°9°–63°17°
- Low, likely
- 38°3°–55°13°
- Typical high / low
- 53°12° / 36°2°
- Wind
- 14 mph22 km/h
- UV peak
- 2
The outlook
Today
Dry, high 54°, low 42°.
Tomorrow
Dry, high 56°, low 44°.
Monday
Dry, high 60°, low 41°, warming up.
Rest of week
Mostly dry, highs 50–60°.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (GYX) (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
Presumpscot River above West Falmouth
8.6 mi- Level
- 1.9 ft
- Flow
- 212 cfs
Reading from Sat 10:30 AM · NWS gauge page
Royal River at Yarmouth
12 mi- Level
- 0.9 ft
- Flow
- 24 cfs
Reading from Sat 10:30 AM · NWS gauge page
Atlantic Coast at Saco (IN MLLW)
15 mi- Level
- 9.7 ft
Reading from Sat 10:30 AM · NWS gauge page
For your home
What this week’s weather means for heating, cooling, pipes and fresh air.
Heating this week
About 75% less heating than a typical week.
This week 32Typical 129
Heating degree days, base 65°F
Heat-pump hours, next 7 days
- h below 47°F
- 20
- 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 2 hours are near freezing and damp, when outdoor units defrost more often.
Comfort
Dry air outside (dew point 28°F).
Open the windows?
No stretch in the next few days is comfortable enough outside, by temperature, dew point and air quality.
Is this typical?
Portland Jetport · official normals 1991–2020 · records 1874–2026
Oct 24, today vs a typical year
Today’s expected high is 3°2° colder than typical.
- Normal high / low
- 57°14° / 38°3°
- Forecast high / low
- 54°12° / 42°6°
- Record high
- 81°27° in 1963
- Record low
- 22°−6° in 1969
Last 7 days vs normal
On average 2°1° colder than normal (daily mean temperature).
- −10°−6°SunOct 18
- −5°−3°MonOct 19
- +2°+1°TueOct 20
- +1°±0°WedOct 21
- +4°+2°ThuOct 22
- −4°−2°FriOct 23
- —SatOct 24
Portland weather by month: normals, records, snow and freeze dates
Sun & moon
Sun
Sunrise 7:06 AM, sunset 5:42 PM.
- Daylight
- 10 h 37 min
- Losing 2 min 49 s a day; shortest Dec 21, 1 h 41 min less
- Golden hour
- 5:02–6:00 PM
- Morning 6:48–7:46 AM
- Blue hour
- 6:00–6:12 PM
- Morning 6:36–6:48 AM; first light 6:36 AM
Stars tonight? Fair
Clear 6:12 PM–6:38 AM, but the moon is 99% lit and up.
Moon
Waxing gibbous
97% lit · growing
- Today
- sets 5:14 AM · rises 4:40 PM
- Full moon
- Oct 26
- New moon
- Nov 9
