Weather Forecast for Portsmouth (US)
New Hampshire, United States of America
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Current Weather - Portsmouth (US): 15°C
Current Weather - Portsmouth (US): 15°C
New Hampshire, United States of America
Clear
Feels like 15°C
Wind
6 km/h WNW
Humidity
88%
Pressure
1020 mb
UV Index
0
Visibility
10 km
Sunny
Sunday, August 16, 2026
High
24°C
Low
13°C
Rain Chance
57%
Hourly Forecast
15°C
17°C
20°C
21°C
23°C
23°C
24°C
24°C
24°C
24°C
23°C
23°C
22°C
22°C
22°C
20°C
18°C
Day Statistics
Maximum Wind
21 km/h
Humidity
71%
Precipitation
2 mm
UV Index
7
Visibility
10 km
Rain Chance
57%
Snow Chance
0%
Sun & Moon
Sunrise
05:50 AM
Sunset
07:44 PM
Moonrise
10:21 AM
Moonset
09:24 PM
Moon Phase
Waxing Crescent
Moon Illumination
18%
Air Quality
PM2.5
9.3
μg/m³
PM10
11
μg/m³
NO₂
3.2
μg/m³
O₃
77.4
μg/m³
SO₂
0.6
μg/m³
CO
128.2
μg/m³
Light drizzle
Monday, August 17, 2026
High
19°C
Low
17°C
Rain Chance
90%
Hourly Forecast
18°C
18°C
18°C
17°C
17°C
18°C
18°C
18°C
18°C
18°C
18°C
18°C
18°C
19°C
19°C
19°C
19°C
19°C
19°C
19°C
19°C
18°C
18°C
18°C
Day Statistics
Maximum Wind
20 km/h
Humidity
94%
Precipitation
5 mm
UV Index
6
Visibility
5 km
Rain Chance
90%
Snow Chance
0%
Sun & Moon
Sunrise
05:51 AM
Sunset
07:43 PM
Moonrise
11:35 AM
Moonset
09:48 PM
Moon Phase
Waxing Crescent
Moon Illumination
27%
Air Quality
PM2.5
7.4
μg/m³
PM10
10
μg/m³
NO₂
3.7
μg/m³
O₃
78
μg/m³
SO₂
0.5
μg/m³
CO
138.8
μg/m³
Sunny
Tuesday, August 18, 2026
High
26°C
Low
15°C
Rain Chance
13%
Hourly Forecast
18°C
17°C
17°C
16°C
16°C
16°C
15°C
16°C
18°C
20°C
23°C
24°C
25°C
25°C
26°C
26°C
25°C
25°C
23°C
21°C
19°C
18°C
18°C
18°C
Day Statistics
Maximum Wind
14 km/h
Humidity
77%
Precipitation
0 mm
UV Index
7
Visibility
7 km
Rain Chance
13%
Snow Chance
0%
Sun & Moon
Sunrise
05:52 AM
Sunset
07:41 PM
Moonrise
12:48 PM
Moonset
10:17 PM
Moon Phase
First Quarter
Moon Illumination
37%
Air Quality
PM2.5
7.2
μg/m³
PM10
9.1
μg/m³
NO₂
3.8
μg/m³
O₃
78.9
μg/m³
SO₂
0.8
μg/m³
CO
165.9
μg/m³
Sunny
Wednesday, August 19, 2026
High
30°C
Low
15°C
Rain Chance
17%
Hourly Forecast
17°C
17°C
16°C
16°C
16°C
15°C
16°C
17°C
19°C
22°C
24°C
26°C
27°C
27°C
29°C
29°C
30°C
30°C
28°C
26°C
25°C
24°C
23°C
23°C
Day Statistics
Maximum Wind
16 km/h
Humidity
67%
Precipitation
0 mm
UV Index
7
Visibility
9 km
Rain Chance
17%
Snow Chance
0%
Sun & Moon
Sunrise
05:53 AM
Sunset
07:40 PM
Moonrise
01:59 PM
Moonset
10:51 PM
Moon Phase
First Quarter
Moon Illumination
48%
Air Quality
PM2.5
8.7
μg/m³
PM10
10.5
μg/m³
NO₂
9
μg/m³
O₃
55.3
μg/m³
SO₂
0.8
μg/m³
CO
252.4
μg/m³
Sunny
Thursday, August 20, 2026
High
25°C
Low
18°C
Rain Chance
43%
Hourly Forecast
22°C
21°C
19°C
19°C
19°C
19°C
19°C
20°C
21°C
22°C
23°C
24°C
24°C
25°C
25°C
25°C
24°C
24°C
22°C
21°C
20°C
19°C
19°C
18°C
Day Statistics
Maximum Wind
13 km/h
Humidity
78%
Precipitation
1 mm
UV Index
6
Visibility
9 km
Rain Chance
43%
Snow Chance
0%
Sun & Moon
Sunrise
05:54 AM
Sunset
07:38 PM
Moonrise
03:06 PM
Moonset
11:32 PM
Moon Phase
First Quarter
Moon Illumination
58%
Sunny
Friday, August 21, 2026
High
26°C
Low
17°C
Rain Chance
5%
Hourly Forecast
18°C
18°C
18°C
17°C
17°C
17°C
18°C
19°C
20°C
21°C
23°C
25°C
25°C
26°C
26°C
25°C
24°C
24°C
22°C
21°C
19°C
18°C
18°C
17°C
Day Statistics
Maximum Wind
17 km/h
Humidity
65%
Precipitation
0 mm
UV Index
7
Visibility
10 km
Rain Chance
5%
Snow Chance
0%
Sun & Moon
Sunrise
05:55 AM
Sunset
07:36 PM
Moonrise
04:05 PM
Moonset
Does not set today
Moon Phase
First Quarter
Moon Illumination
69%
Patchy rain nearby
Saturday, August 22, 2026
High
20°C
Low
17°C
Rain Chance
63%
Hourly Forecast
17°C
17°C
17°C
17°C
17°C
17°C
18°C
19°C
19°C
19°C
18°C
17°C
18°C
18°C
18°C
19°C
19°C
20°C
20°C
19°C
19°C
19°C
19°C
19°C
Day Statistics
Maximum Wind
12 km/h
Humidity
83%
Precipitation
1 mm
UV Index
5
Visibility
9 km
Rain Chance
63%
Snow Chance
0%
Sun & Moon
Sunrise
05:56 AM
Sunset
07:35 PM
Moonrise
04:55 PM
Moonset
12:21 AM
Moon Phase
Waxing Gibbous
Moon Illumination
78%
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