Weather Forecast for Portland
Maine, United States of America
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Current Weather - Portland: 19°C
Current Weather - Portland: 19°C
Maine, United States of America
Mist
Feels like 19°C
Wind
5 km/h WNW
Humidity
100%
Pressure
1006 mb
UV Index
1
Visibility
2 km
Patchy rain nearby
Thursday, June 11, 2026
High
26°C
Low
16°C
Rain Chance
57%
Hourly Forecast
23°C
24°C
25°C
23°C
21°C
20°C
19°C
18°C
18°C
17°C
Day Statistics
Maximum Wind
12 km/h
Humidity
90%
Precipitation
1 mm
UV Index
7
Visibility
5 km
Rain Chance
57%
Snow Chance
0%
Sun & Moon
Sunrise
04:59 AM
Sunset
08:22 PM
Moonrise
01:58 AM
Moonset
04:26 PM
Moon Phase
Waning Crescent
Moon Illumination
8%
Air Quality
PM2.5
7.7
μg/m³
PM10
8.4
μg/m³
NO₂
4.3
μg/m³
O₃
90.9
μg/m³
SO₂
0.6
μg/m³
CO
174.3
μg/m³
Patchy rain nearby
Friday, June 12, 2026
High
19°C
Low
16°C
Rain Chance
51%
Hourly Forecast
17°C
16°C
16°C
16°C
16°C
16°C
17°C
17°C
18°C
18°C
18°C
19°C
19°C
19°C
18°C
18°C
18°C
17°C
17°C
16°C
16°C
16°C
16°C
16°C
Day Statistics
Maximum Wind
14 km/h
Humidity
93%
Precipitation
0 mm
UV Index
8
Visibility
5 km
Rain Chance
51%
Snow Chance
0%
Sun & Moon
Sunrise
04:58 AM
Sunset
08:22 PM
Moonrise
02:24 AM
Moonset
05:42 PM
Moon Phase
New Moon
Moon Illumination
3%
Air Quality
PM2.5
5.4
μg/m³
PM10
5.9
μg/m³
NO₂
3.8
μg/m³
O₃
77.5
μg/m³
SO₂
0.5
μg/m³
CO
157.5
μg/m³
Moderate rain
Saturday, June 13, 2026
High
20°C
Low
15°C
Rain Chance
87%
Hourly Forecast
16°C
16°C
16°C
16°C
16°C
16°C
15°C
15°C
16°C
16°C
17°C
18°C
18°C
19°C
20°C
20°C
19°C
19°C
18°C
17°C
16°C
16°C
15°C
15°C
Day Statistics
Maximum Wind
16 km/h
Humidity
93%
Precipitation
6 mm
UV Index
8
Visibility
5 km
Rain Chance
87%
Snow Chance
0%
Sun & Moon
Sunrise
04:58 AM
Sunset
08:23 PM
Moonrise
02:57 AM
Moonset
07:01 PM
Moon Phase
New Moon
Moon Illumination
1%
Air Quality
PM2.5
3.1
μg/m³
PM10
3.8
μg/m³
NO₂
2.4
μg/m³
O₃
74.8
μg/m³
SO₂
0.4
μg/m³
CO
123.4
μg/m³
Patchy rain nearby
Sunday, June 14, 2026
High
21°C
Low
14°C
Rain Chance
69%
Hourly Forecast
15°C
15°C
14°C
14°C
14°C
14°C
15°C
16°C
17°C
18°C
19°C
20°C
20°C
20°C
21°C
20°C
19°C
18°C
18°C
18°C
18°C
18°C
17°C
17°C
Day Statistics
Maximum Wind
26 km/h
Humidity
85%
Precipitation
3 mm
UV Index
8
Visibility
8 km
Rain Chance
69%
Snow Chance
0%
Sun & Moon
Sunrise
04:58 AM
Sunset
08:23 PM
Moonrise
03:40 AM
Moonset
08:16 PM
Moon Phase
New Moon
Moon Illumination
0%
Air Quality
PM2.5
6.1
μg/m³
PM10
7.8
μg/m³
NO₂
2.5
μg/m³
O₃
82.4
μg/m³
SO₂
0.3
μg/m³
CO
125.4
μg/m³
Patchy rain nearby
Monday, June 15, 2026
High
24°C
Low
15°C
Rain Chance
36%
Hourly Forecast
17°C
16°C
16°C
16°C
15°C
16°C
16°C
17°C
18°C
19°C
20°C
20°C
20°C
22°C
23°C
23°C
23°C
22°C
21°C
20°C
19°C
19°C
18°C
17°C
Day Statistics
Maximum Wind
12 km/h
Humidity
80%
Precipitation
0 mm
UV Index
2
Visibility
6 km
Rain Chance
36%
Snow Chance
0%
Sun & Moon
Sunrise
04:58 AM
Sunset
08:24 PM
Moonrise
04:38 AM
Moonset
09:22 PM
Moon Phase
New Moon
Moon Illumination
2%
Air Quality
PM2.5
6.3
μg/m³
PM10
8.2
μg/m³
NO₂
2.6
μg/m³
O₃
98
μg/m³
SO₂
0.5
μg/m³
CO
146.7
μg/m³
Patchy rain nearby
Tuesday, June 16, 2026
High
15°C
Low
13°C
Rain Chance
69%
Hourly Forecast
17°C
16°C
16°C
16°C
15°C
15°C
15°C
15°C
15°C
15°C
15°C
15°C
15°C
14°C
14°C
14°C
14°C
13°C
13°C
13°C
13°C
13°C
13°C
13°C
Day Statistics
Maximum Wind
13 km/h
Humidity
86%
Precipitation
1 mm
UV Index
3
Visibility
5 km
Rain Chance
69%
Snow Chance
0%
Sun & Moon
Sunrise
04:58 AM
Sunset
08:24 PM
Moonrise
05:49 AM
Moonset
10:14 PM
Moon Phase
Waxing Crescent
Moon Illumination
6%
Partly Cloudy
Wednesday, June 17, 2026
High
21°C
Low
13°C
Rain Chance
13%
Hourly Forecast
13°C
13°C
13°C
13°C
13°C
13°C
14°C
15°C
16°C
17°C
18°C
19°C
20°C
20°C
20°C
19°C
19°C
18°C
18°C
17°C
17°C
16°C
16°C
16°C
Day Statistics
Maximum Wind
19 km/h
Humidity
80%
Precipitation
0 mm
UV Index
5
Visibility
9 km
Rain Chance
13%
Snow Chance
0%
Sun & Moon
Sunrise
04:58 AM
Sunset
08:25 PM
Moonrise
07:10 AM
Moonset
10:54 PM
Moon Phase
Waxing Crescent
Moon Illumination
11%
Solar Radiation Data
Shortwave Radiation
7.39
Diffuse Radiation
5.03
DNI
2.55
GTI
5.65
Weather Alerts
Heat Advisory issued June 11 at 2:24AM EDT until June 11 at 8:00PM EDT by NWS Gray ME
* WHAT...Heat index values up to 97 expected. * WHERE...Western and Central Hillsborough, Belknap, Merrimack, Strafford, Sullivan, Southern Grafton, Cheshire, Eastern Hillsborough, and Interior Rockingham Counties. * WHEN...From noon today to 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...It will remain warm tonight as overnight lows only dip into the mid 60s to lower 70s.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
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