Observed 6:55 PM EDT at KPWM

South Portland, ME weather

Clear and 46°8°.

Mostly agree

Now 46°8°

Clear

Wind: 3 mph5 km/h; From the southwest. Up to 5 mph8 km/h through 7 AM
Dew point: 39°4°; Comfortable
UV tomorrow: 4Moderate; Moderate 11 AM–4 PM · peak 4
Air quality: 30Good; Main pollutant: Ozone
Pressure: 30.5 inHg1033 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

About the same as this time yesterday (45°7° then, 47°8° now)

Good hours for

Low 33°1° tomorrow at 6 AM
Above 50°10° tomorrow by 11 AM
High 58°14° tomorrow at 2 PM
Below 50°10° tomorrow night after 8 PM

TonightDown to 34°1° by 5 AM · Clear
Tomorrow morningUp to 54°12° by 11 AM · Clear
Tomorrow afternoonNear 56°13° · Clear
Tomorrow nightDown to 39°4° by 4 AM · Clear
Monday morningUp to 52°11° by 11 AM · Partly cloudy
Monday afternoonUp to 64°18° by 3 PM · Partly cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 7p	Clear	48°9° (likely 43°6° to 48°9°)	47°8°	0%	5 mph8 km/h from SW, gusts 10 mph17 km/h	65%	0%	0
Sat 8p	Clear	45°7° (likely 41°5° to 45°7°)	44°7°	0%	5 mph8 km/h from SW, gusts 9 mph15 km/h	76%	0%	0
Sat 9p	Clear	43°6° (likely 40°4° to 43°6°)	43°6°	0%	0 mph0 km/h, gusts 8 mph13 km/h	82%	1%	0
Sat 10p	Clear	42°6° (likely 39°4° to 42°6°)	42°6°	0%	0 mph0 km/h, gusts 8 mph13 km/h	82%	1%	0
Sat 11p	Clear	40°4° (likely 37°3° to 42°6°)	40°4°	0%	0 mph0 km/h, gusts 7 mph11 km/h	85%	2%	0
Sun 12a	Clear	39°4° (likely 36°2° to 41°5°)	39°4°	0%	0 mph0 km/h, gusts 5 mph8 km/h	85%	2%	0
Sun 1a	Clear	38°3° (likely 35°2° to 41°5°)	38°3°	0%	0 mph0 km/h, gusts 5 mph8 km/h	85%	4%	0
Sun 2a	Clear	37°3° (likely 34°1° to 39°4°)	37°3°	0%	0 mph0 km/h, gusts 5 mph8 km/h	85%	5%	0
Sun 3a	Clear	36°2° (likely 34°1° to 39°4°)	36°2°	0%	0 mph0 km/h, gusts 5 mph9 km/h	89%	9%	0
Sun 4a	Clear	35°2° (likely 34°1° to 38°3°)	35°2°	0%	0 mph0 km/h, gusts 5 mph8 km/h	89%	5%	0
Sun 5a	Clear	34°1° (likely 33°1° to 37°3°)	34°1°	0%	0 mph0 km/h, gusts 4 mph7 km/h	92%	2%	0
Sun 6a	Clear	33°1° (likely 33°1° to 37°3°)	33°1°	0%	0 mph0 km/h, gusts 4 mph6 km/h	96%	5%	0
Sun 7a	Sunny	34°1° (likely 32°0° to 37°3°)	34°1°	0%	0 mph0 km/h, gusts 3 mph5 km/h	92%	9%	0
Sun 8a	Sunny	35°2° (likely 33°1° to 39°4°)	35°2°	0%	0 mph0 km/h, gusts 3 mph5 km/h	92%	10%	0
Sun 9a	Sunny	43°6° (likely 40°4° to 43°6°)	43°6°	0%	0 mph0 km/h, gusts 3 mph5 km/h	76%	7%	1
Sun 10a	Sunny	49°9° (likely 47°8° to 52°11°)	49°9°	0%	0 mph0 km/h, gusts 5 mph8 km/h	66%	3%	2
Sun 11a	Sunny	54°12° (likely 51°11° to 58°14°)	54°12°	0%	0 mph0 km/h, gusts 6 mph9 km/h	52%	0%	3
Sun 12p	Sunny	56°13° (likely 55°13° to 61°16°)	56°13°	0%	0 mph0 km/h, gusts 5 mph9 km/h	49%	0%	4
Sun 1p	Sunny	57°14° (likely 56°13° to 63°17°)	57°14°	0%	5 mph8 km/h from S, gusts 7 mph11 km/h	49%	0%	4
Sun 2p	Sunny	58°14° (likely 56°13° to 64°18°)	58°14°	0%	5 mph8 km/h from S, gusts 8 mph13 km/h	49%	0%	4
Sun 3p	Sunny	58°14° (likely 56°13° to 63°17°)	58°14°	0%	5 mph8 km/h from S, gusts 9 mph15 km/h	51%	0%	3
Sun 4p	Sunny	57°14° (likely 54°12° to 60°16°)	57°14°	0%	5 mph8 km/h from S, gusts 11 mph17 km/h	55%	0%	2
Sun 5p	Sunny	55°13° (likely 52°11° to 56°13°)	55°13°	0%	5 mph8 km/h from S, gusts 13 mph22 km/h	61%	0%	1
Sun 6p	Clear	52°11° (likely 49°9° to 52°11°)	52°11°	0%	5 mph8 km/h from S, gusts 14 mph23 km/h	71%	0%	0
Sun 7p	Clear	50°10° (likely 46°8° to 50°10°)	48°9°	0%	5 mph8 km/h from SW, gusts 14 mph23 km/h	77%	0%	0
Sun 8p	Clear	48°9° (likely 45°7° to 49°9°)	46°8°	0%	5 mph8 km/h from SW, gusts 14 mph22 km/h	83%	0%	0
Sun 9p	Clear	47°8° (likely 43°6° to 47°8°)	45°7°	0%	5 mph8 km/h from SW, gusts 11 mph17 km/h	83%	0%	0
Sun 10p	Clear	46°8° (likely 42°6° to 47°8°)	45°7°	0%	5 mph8 km/h from SW, gusts 13 mph21 km/h	83%	0%	0
Sun 11p	Clear	45°7° (likely 40°4° to 46°8°)	44°7°	0%	5 mph8 km/h from SW, gusts 10 mph17 km/h	79%	20%	0
Mon 12a	Clear	44°7° (likely 38°3° to 45°7°)	42°6°	0%	5 mph8 km/h from SW, gusts 10 mph16 km/h	79%	40%	0
Mon 1a	Clear	43°6° (likely 37°3° to 44°7°)	43°6°	0%	0 mph0 km/h, gusts 10 mph16 km/h	76%	41%	0
Mon 2a	Clear	41°5° (likely 35°2° to 43°6°)	41°5°	0%	0 mph0 km/h, gusts 10 mph16 km/h	79%	35%	0
Mon 3a	Mostly clear	40°4° (likely 34°1° to 43°6°)	40°4°	0%	0 mph0 km/h, gusts 9 mph15 km/h	82%	34%	0
Mon 4a	Mostly clear	39°4° (likely 34°1° to 42°6°)	39°4°	0%	0 mph0 km/h, gusts 9 mph15 km/h	82%	59%	0
Mon 5a	Mostly clear	39°4° (likely 33°1° to 42°6°)	39°4°	0%	0 mph0 km/h, gusts 8 mph13 km/h	79%	30%	0
Mon 6a	Mostly clear	38°3° (likely 32°0° to 41°5°)	38°3°	0%	0 mph0 km/h, gusts 6 mph10 km/h	82%	41%	0
Mon 7a	Mostly sunny	38°3° (likely 32°0° to 40°4°)	38°3°	0%	0 mph0 km/h, gusts 6 mph10 km/h	82%	24%	0
Mon 8a	Partly sunny	38°3° (likely 33°1° to 41°5°)	38°3°	0%	0 mph0 km/h, gusts 4 mph7 km/h	85%	63%	0
Mon 9a	Mostly sunny	43°6° (likely 39°4° to 47°8°)	43°6°	0%	0 mph0 km/h, gusts 7 mph12 km/h	79%	31%	1
Mon 10a	Mostly sunny	47°8° (likely 47°8° to 55°13°)	47°8°	0%	0 mph0 km/h, gusts 9 mph15 km/h	74%	34%	2
Mon 11a	Mostly sunny	52°11° (likely 52°11° to 62°17°)	52°11°	0%	0 mph0 km/h, gusts 10 mph15 km/h	63%	15%	3
Mon 12p	Sunny	57°14° (likely 55°13° to 66°19°)	57°14°	0%	0 mph0 km/h, gusts 7 mph12 km/h	57%	20%	4
Mon 1p	Mostly sunny	62°17° (likely 58°14° to 69°21°)	62°17°	0%	5 mph8 km/h from SW, gusts 8 mph14 km/h	52%	41%	4
Mon 2p	Mostly sunny	63°17° (likely 59°15° to 66°19°)	63°17°	0%	5 mph8 km/h from SW, gusts 8 mph13 km/h	52%	43%	4
Mon 3p	Mostly sunny	64°18° (likely 56°13° to 67°19°)	64°18°	0%	5 mph8 km/h from SW, gusts 6 mph9 km/h	52%	46%	3
Mon 4p	Mostly sunny	63°17° (likely 55°13° to 67°19°)	63°17°	0%	0 mph0 km/h, gusts 5 mph7 km/h	56%	59%	2
Mon 5p	Mostly sunny	61°16° (likely 54°12° to 63°17°)	61°16°	0%	0 mph0 km/h, gusts 4 mph6 km/h	62%	55%	1
Mon 6p	Mostly clear	58°14° (likely 52°11° to 59°15°)	58°14°	0%	5 mph8 km/h from W, gusts 5 mph8 km/h	69%	39%	0

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Mostly sunny. High 57°14°, low 32°0°. Typical 57°14° / 38°3°. Dry. Mostly agree.
1. Evening
  6 PM–midnight
  Clear, 45°7°
  Dry
2. Overnight
  midnight–6 AM
  Clear, 34°1°
  Dry
Official NWS forecast
Tonight: Clear, with a low around 32. West wind 0 to 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
56°13°–59°15°
Low, likely
25°−4°–34°1°
Typical high / low
57°14° / 38°3°
Wind
7 mph12 km/h, gusts 14 mph23 km/h
UV peak
4
Tomorrow, Oct 25. Sunny. High 59°15°, low 37°3°. Typical 56°13° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 35°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 58°14°
  Dry
3. Evening
  6 PM–midnight
  Clear, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 39°4°
  Dry
Official NWS forecast
Day: Sunny, with a high near 59. Southwest wind 0 to 5 mph.
Night: Mostly clear, with a low around 37. Southwest wind 0 to 5 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
56°13°–64°18°
Low, likely
32°0°–37°3°
Typical high / low
56°13° / 38°3°
Wind
10 mph15 km/h, gusts 21 mph34 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 64°18°, low 35°2°. Typical 56°13° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 42°6°
  Dry
Official NWS forecast
Day: Sunny, with a high near 64. West wind 0 to 5 mph.
Night: Mostly clear, with a low around 35. Northwest wind 5 to 10 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
59°15°–66°19°
Low, likely
32°0°–40°4°
Typical high / low
56°13° / 38°3°
Wind
11 mph17 km/h, gusts 22 mph36 km/h
UV peak
4
Tuesday, Oct 27. Sunny. High 50°10°, low 27°−3°. Typical 56°13° / 38°3°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 40°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 50°10°
  Dry
3. Evening
  6 PM–midnight
  Clear, 41°5°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 32°0°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 50.
Night: Clear, with a low around 27.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
50°10°–52°11°
Low, likely
27°−3°–41°5°
Typical high / low
56°13° / 38°3°
Wind
14 mph23 km/h, gusts 25 mph41 km/h
UV peak
4
Wednesday, Oct 28. Mostly sunny. High 50°10°, low 32°0°. Typical 55°13° / 37°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 32°0°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 50°10°
  Dry
3. Evening
  6 PM–midnight
  Clear, 42°5°
  Dry
4. 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 32.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
47°8°–52°11°
Low, likely
27°−3°–35°2°
Typical high / low
55°13° / 37°3°
Wind
9 mph14 km/h, gusts 17 mph28 km/h
UV peak
4
Thursday, Oct 29. Mostly sunny. High 62°17°, low 45°7°. Typical 55°13° / 37°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 42°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 49°10°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 62.
Night: Mostly clear, with a low around 45.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
59°15°–68°20°
Low, likely
37°3°–45°7°
Typical high / low
55°13° / 37°3°
Wind
12 mph19 km/h, gusts 28 mph45 km/h
UV peak
3
Friday, Oct 30. Cloudy. High 66°19°, low 40°4°. Typical 54°12° / 37°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 67°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°12°
  Dry
4. 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 66.
Night: Partly cloudy, with a low around 40.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
60°16°–72°22°
Low, likely
40°4°–49°9°
Typical high / low
54°12° / 37°3°
Wind
11 mph17 km/h, gusts 26 mph41 km/h
UV peak
3
Saturday, Oct 31. Partly sunny. High 60°16°, low 44°7°. Typical 54°12° / 36°2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 59°15°
  Dry
3. Evening
  6 PM–midnight
  Clear, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 45°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 60.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
53°12°–60°16°
Low, likely
40°4°–47°8°
Typical high / low
54°12° / 36°2°
Wind
7 mph11 km/h, gusts 26 mph41 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 59°15°, low 45°7°. Typical 54°12° / 36°2°. Rain 0.01 in0.3 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 59°15°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 54°12°
  30% chance
4. Overnight
  midnight–6 AM
  Cloudy, 53°12°
  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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
57°14°–64°18°
Low, likely
40°4°–51°11°
Typical high / low
54°12° / 36°2°
Wind
12 mph19 km/h, gusts 20 mph32 km/h
UV peak
3
Monday, Nov 2. Rain. High 62°17°, low 52°11°. Typical 53°12° / 36°2°. Rain 0.24 in6.1 mm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 56°13°
  30% chance
2. Afternoon
  noon–6 PM
  Drizzle, 61°16°
  30% chance · 0.01 in0.3 mm
3. Evening
  6 PM–midnight
  Rain, 57°14°
  30% chance · 0.26 in6.5 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°–65°18°
Low, likely
49°9°–59°15°
Typical high / low
53°12° / 36°2°
Wind
15 mph24 km/h, gusts 30 mph49 km/h
UV peak
1

10 days15 days30 days

The outlook

Today
Dry, high 57°, low 32°.
Tomorrow
Dry, high 59°, low 37°.
Monday
Dry, high 64°, low 35°, warming up.
Rest of week
Mostly dry, highs 50–66°.

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

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Atlantic Coast at Portland (IN MLLW)

2.6 mi

Below flood stage

Level: 1.3 ft

Forecast peak 11.1 ft Tue 12 PM, action stage

Reading from Sat 5:36 PM · NWS gauge page

Presumpscot River above West Falmouth

6.5 mi

Below flood stage

Level: 2.1 ft
Flow: 251 cfs

Reading from Sat 5:45 PM · NWS gauge page

Atlantic Coast at Saco (IN MLLW)

13 mi

Below flood stage

Level: 1.2 ft

Reading from Sat 5:42 PM · NWS gauge page

Royal River at Yarmouth

13 mi

Below flood stage

Level: 0.9 ft
Flow: 24 cfs

Reading from Sat 5:30 PM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 72% less heating than a typical week.

This week 36Typical 129

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 28
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 16 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 39°F).

Open the windows?

Mon, 1:00 PM–5:00 PM

Good stretch to open the windows.

Is this typical?

Portland Jetport · official normals 1991–2020 · records 1874–2026

Oct 24, today vs a typical year

Today’s expected high is about typical for the date.

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

South Portland weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 37 min; Losing 2 min 49 s a day; shortest Dec 21, 1 h 41 min less
Golden hour: 5:03–6:01 PM; Morning 6:48–7:46 AM
Blue hour: 6:01–6:12 PM; Morning 6:37–6:48 AM; first light 6:37 AM

Stars tonight? Fair

Clear 7:16 PM–6:38 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 5:14 AM · rises 4:40 PM
Full moon: Oct 26
New moon: Nov 9

Looking east from South Portland. The highest point on the skyline is about 3,500 ft, 6 mi away.Skyline from USGS elevation data, heights drawn up to 3× taller. Sky, sun and moon as they are now.

South Portland, ME weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Atlantic Coast at Portland (IN MLLW)

Presumpscot River above West Falmouth

Atlantic Coast at Saco (IN MLLW)

Royal River at Yarmouth

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon