10-day forecast · Portsmouth
Day-by-day outlook up to 14 days: highs, lows, precipitation totals, wind and UV. Planning further ahead? Open the 30-day outlook →
Fri · Today
Sunny
100°
74°
0.06 in
⌄
Wind 9 mph SW
Gusts 21 mph
UV index 8 – High
Precip chance 57% · 0.06 in
Sunrise 7:03 AM
Sunset 7:58 PM
Sat · Tomorrow
Showers
94°
70°
0.30 in
⌄
Wind 12 mph NW
Gusts 17 mph
UV index 8 – High
Precip chance 76% · 0.30 in
Sunrise 7:04 AM
Sunset 7:56 PM
Sunday 6/9
Sunny
82°
61°
0.03 in
⌄
Wind 8 mph NE
Gusts 23 mph
UV index 7 – High
Precip chance 36% · 0.03 in
Sunrise 7:05 AM
Sunset 7:55 PM
Monday 7/9
Sunny
85°
60°
9%
⌄
Wind 9 mph E
Gusts 24 mph
UV index 7 – High
Precip chance 9%
Sunrise 7:06 AM
Sunset 7:53 PM
Tuesday 8/9
Mostly cloudy
85°
63°
0.01 in
⌄
Wind 8 mph SW
Gusts 21 mph
UV index 7 – High
Precip chance 36% · 0.01 in
Sunrise 7:07 AM
Sunset 7:51 PM
Wednesday 9/9
Sunny
93°
69°
4%
⌄
Wind 12 mph SW
Gusts 30 mph
UV index 8 – Very high
Precip chance 4%
Sunrise 7:08 AM
Sunset 7:50 PM
Thursday 10/9
Mostly cloudy
82°
63°
10%
⌄
Wind 10 mph NW
Gusts 27 mph
UV index 7 – High
Precip chance 10%
Sunrise 7:09 AM
Sunset 7:48 PM
Friday 11/9
Mostly cloudy
67°
56°
20%
⌄
Wind 6 mph NE
Gusts 12 mph
UV index 5 – Moderate
Precip chance 20%
Sunrise 7:10 AM
Sunset 7:47 PM
Saturday 12/9
Fog
64°
56°
0.03 in
⌄
Wind 4 mph SE
Gusts 10 mph
UV index 4 – Moderate
Precip chance 74% · 0.03 in
Sunrise 7:10 AM
Sunset 7:45 PM
Sunday 13/9
Fog
82°
63°
0.36 in
⌄
Wind 6 mph SW
Gusts 15 mph
UV index 6 – High
Precip chance 90% · 0.36 in
Sunrise 7:11 AM
Sunset 7:44 PM
Monday 14/9
Sunny
72°
54°
0.11 in
⌄
Wind 8 mph N
Gusts 24 mph
UV index 6 – High
Precip chance 64% · 0.11 in
Sunrise 7:12 AM
Sunset 7:42 PM
Tuesday 15/9
Sunny
73°
47°
5%
⌄
Wind 6 mph E
Gusts 17 mph
UV index 6 – High
Precip chance 5%
Sunrise 7:13 AM
Sunset 7:40 PM
Wednesday 16/9
Sunny
96°
54°
0.01 in
⌄
Wind 5 mph NW
Gusts 10 mph
UV index 9 – Very high
Precip chance 17% · 0.01 in
Sunrise 7:14 AM
Sunset 7:39 PM
Thursday 17/9
Sunny
97°
73°
0.00 in
⌄
Wind 3 mph SE
Gusts 14 mph
UV index 9 – Very high
Precip chance 17% · 0.00 in
Sunrise 7:15 AM
Sunset 7:37 PM
10-day outlook for Portsmouth
Over the next ten days Portsmouth peaks at 100° on Friday and bottoms out at 56° on Friday. The back half cools off by roughly 21°, so the warmest days are the ones in front of you. Add it up and about 0.80 in of precipitation falls over the period, spread across 5 unsettled days, with Sunday the most likely (90%).