Southwest Harbor, ME Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Southwest Harbor, ME.

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Current Conditions — Southwest Harbor, ME

BAR HARBOR (KBHB)

Light Rain

39.2 F
Humidity:%
Wind Speed: 13.8 mph
Barometer:30.09 in
Dewpoint: F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:31.3 F
Apr 22 2026, 05:50 PM EDT
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5-Day Forecast — Southwest Harbor, ME

Wednesday

High 46 °F
Slight Chance of Rain Showers
Wednesday
Night
Low 35 °F
Rain/Snow Mix
Thursday

High 48 °F
Rain Showers Likely
Thursday
Night
Low 33 °F
Rain
Friday

High 50 °F
Mostly Cloudy
Friday
Night
Low 33 °F
Partly Cloudy
Saturday

High 51 °F
Mostly Cloudy
Saturday
Night
Low 37 °F
Partly Cloudy
Sunday

High 53 °F
Partly Sunny

Detailed Forecast — Southwest Harbor, ME

Wednesday
Slight Chance of Rain Showers. High near 46°F. Wind 6 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Rain/Snow Mix. Low around 35°F. Wind 5 to 6 mph, with gusts as high as 12 mph.
Thursday
Rain Showers Likely. High near 48°F. Wind 3 to 6 mph, with gusts as high as 12 mph.
Thursday Night
Rain. Low around 33°F. Wind 2 to 6 mph, with gusts as high as 12 mph.
Friday
Mostly Cloudy. High near 50°F. Wind 6 to 7 mph, with gusts as high as 14 mph.
Friday Night
Partly Cloudy. Low around 33°F. Wind 3 to 5 mph, with gusts as high as 9 mph.
Saturday
Mostly Cloudy. High near 51°F. Wind 6 to 7 mph, with gusts as high as 14 mph.
Saturday Night
Partly Cloudy. Low around 37°F. Wind around 2 mph, with gusts as high as 7 mph.
Sunday
Partly Sunny. High near 53°F. Wind 2 to 6 mph, with gusts as high as 9 mph.
Sunday Night
Mostly Cloudy. Low around 39°F. Wind around 2 mph, with gusts as high as 8 mph.
Monday
Mostly Cloudy. High near 51°F. Wind 3 to 7 mph, with gusts as high as 12 mph.
Monday Night
Partly Cloudy. Low around 39°F. Wind around 3 mph, with gusts as high as 9 mph.
Tuesday
Partly Sunny. High near 51°F. Wind 5 to 9 mph, with gusts as high as 16 mph.
ME Radar
Current Radar • ME
Day 1 Outlook • April 22, 2026

Observation History — Southwest Harbor, ME

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
05:50 PM EDT 13.8 10.00 Light Rain -- 39.2 % 31.3 NA 30.09 1019.0
05:30 PM EDT 13.8 10.00 Cloudy -- 39.2 % 31.3 NA 30.10 1019.3
05:20 PM EDT 10.00 Light Rain -- 39.2 % NA NA 30.10 1019.3
05:00 PM EDT 15.0 10.00 Light Rain -- 41.0 % 33.1 NA 30.11 1019.6
04:45 PM EDT S 12.7 10.00 Cloudy -- 41.0 % 33.8 NA 30.11 1019.6
04:30 PM EDT S 17.3 10.00 Cloudy -- 41.0 % 32.5 NA 30.10 1019.3
04:15 PM EDT 10.00 Cloudy -- 41.0 % NA NA 30.11 1019.6
04:00 PM EDT 10.00 Cloudy -- 41.0 % NA NA 30.12 1020.0
03:50 PM EDT S 17.3 10.00 Cloudy -- 42.8 % 34.9 NA 30.12 1020.0
03:35 PM EDT S 16.1 10.00 Cloudy -- 42.8 % 35.1 NA 30.13 1020.3
03:20 PM EDT 16.1 10.00 Cloudy -- 42.8 % 35.1 NA 30.13 1020.3
03:15 PM EDT G 21.9 10.00 Cloudy -- 42.8 % NA NA 30.14 1020.7
03:00 PM EDT 13.8 10.00 Cloudy -- 42.8 % 35.8 NA 30.14 1020.7
02:35 PM EDT S 15.0 10.00 Cloudy -- 42.8 % 35.4 NA 30.15 1021.0
02:20 PM EDT 16.1 10.00 Cloudy -- 42.8 % 35.1 NA 30.16 1021.3
02:15 PM EDT 15.0 10.00 Cloudy -- 42.8 % 35.4 NA 30.16 1021.3
02:00 PM EDT S 15.0 10.00 Cloudy -- 41.0 % 33.1 NA 30.17 1021.7
01:35 PM EDT 10.00 Cloudy -- 41.0 % NA NA 30.18 1022.0
01:25 PM EDT 10.00 Cloudy -- 42.8 % NA NA 30.18 1022.0
01:20 PM EDT 10.00 Cloudy -- 42.8 % NA NA 30.18 1022.0
01:15 PM EDT 10.00 Cloudy -- 42.8 % NA NA 30.18 1022.0
12:50 PM EDT S 15.0 10.00 Cloudy -- 42.8 % 35.4 NA 30.19 1022.4
12:45 PM EDT 12.7 10.00 Cloudy -- 42.8 % 36.1 NA 30.19 1022.4
12:35 PM EDT 10.00 Cloudy -- 42.8 % NA NA 30.19 1022.4

Regional Weather Observation

BAR HARBOR (KBHB)

Light Rain
39.2 F

BANGOR (KBGR)

Light Rain
39.2 F

ROCKLAND/KNOX (KRKD)

Light Rain
41.0 F

WATERVILLE (KWVL)

Light Rain
39.2 F

AUGUSTA (KAUG)

Light Rain
39.2 F

WISCASSET (KIWI)

Cloudy
42.8 F
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