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 →
Thu · Today
Sunny
40°
23°
7%
⌄
Wind 9 mph S
Gusts 21 mph
UV index 8 – Very high
Precip chance 7%
Sunrise 6:37 AM
Sunset 7:31 PM
Fri · Tomorrow
Sunny
38°
25°
0.02 in
⌄
Wind 11 mph W
Gusts 28 mph
UV index 9 – Very high
Precip chance 36% · 0.02 in
Sunrise 6:38 AM
Sunset 7:29 PM
Saturday 5/9
Showers
31°
23°
0.11 in
⌄
Wind 11 mph N
Gusts 21 mph
UV index 8 – High
Precip chance 66% · 0.11 in
Sunrise 6:39 AM
Sunset 7:28 PM
Sunday 6/9
Showers
28°
21°
0.17 in
⌄
Wind 12 mph E
Gusts 20 mph
UV index 8 – High
Precip chance 72% · 0.17 in
Sunrise 6:40 AM
Sunset 7:26 PM
Monday 7/9
Sunny
27°
20°
0.01 in
⌄
Wind 12 mph NE
Gusts 21 mph
UV index 7 – High
Precip chance 17% · 0.01 in
Sunrise 6:41 AM
Sunset 7:25 PM
Tuesday 8/9
Mostly cloudy
29°
18°
8%
⌄
Wind 9 mph SE
Gusts 17 mph
UV index 7 – High
Precip chance 8%
Sunrise 6:41 AM
Sunset 7:23 PM
Wednesday 9/9
Mostly cloudy
31°
19°
7%
⌄
Wind 11 mph S
Gusts 28 mph
UV index 8 – Very high
Precip chance 7%
Sunrise 6:42 AM
Sunset 7:22 PM
Thursday 10/9
Mostly cloudy
36°
21°
0.19 in
⌄
Wind 13 mph SW
Gusts 30 mph
UV index 8 – Very high
Precip chance 67% · 0.19 in
Sunrise 6:43 AM
Sunset 7:20 PM
Friday 11/9
Sunny
30°
23°
0.08 in
⌄
Wind 9 mph SW
Gusts 32 mph
UV index 7 – High
Precip chance 57% · 0.08 in
Sunrise 6:44 AM
Sunset 7:19 PM
Saturday 12/9
Sunny
23°
18°
3%
⌄
Wind 13 mph N
Gusts 17 mph
UV index 6 – High
Precip chance 3%
Sunrise 6:45 AM
Sunset 7:17 PM
Sunday 13/9
Sunny
25°
17°
5%
⌄
Wind 10 mph NE
Gusts 19 mph
UV index 6 – High
Precip chance 5%
Sunrise 6:45 AM
Sunset 7:16 PM
Monday 14/9
Sunny
29°
17°
2%
⌄
Wind 8 mph S
Gusts 22 mph
UV index 7 – High
Precip chance 2%
Sunrise 6:46 AM
Sunset 7:14 PM
Tuesday 15/9
Sunny
33°
19°
17%
⌄
Wind 11 mph SW
Gusts 28 mph
UV index 8 – Very high
Precip chance 17%
Sunrise 6:47 AM
Sunset 7:13 PM
Wednesday 16/9
Mostly cloudy
36°
21°
10%
⌄
Wind 11 mph SW
Gusts 32 mph
UV index 8 – Very high
Precip chance 10%
Sunrise 6:48 AM
Sunset 7:11 PM
10-day outlook for Portsmouth
Over the next ten days Portsmouth peaks at 40° on Thursday and bottoms out at 18° on Saturday. The back half cools off by roughly 12°, so the warmest days are the ones in front of you. Add it up and about 0.59 in of precipitation falls over the period, spread across 5 unsettled days, with Sunday the most likely (72%).