Weather information for the Portsmouth area is provided below. Average temperatures, climate details and current forecasts are included!
Climate
Monthly average temperatures and precipitation for Portsmouth are shown below.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 38° | 44° | 55° | 66° | 75° | 84° | 86° | 85° | 78° | 68° | 55° | 44° |
| Avg. Low | 20° | 24° | 34° | 42° | 51° | 58° | 64° | 62° | 55° | 44° | 35° | 26° |
| Daily Avg | 30° | 34° | 45° | 55° | 64° | 71° | 75° | 74° | 67° | 56° | 46° | 35° |
| Avg. Precip. | 2.7 in | 2.7 in | 3.6 in | 3.6 in | 4.3 in | 3.5 in | 4.0 in | 4.3 in | 3.3 in | 2.5 in | 3.1 in | 3.3 in |
| Note: All temperatures are in degrees Fahrenheit. | ||||||||||||
This Afternoon
Mostly Cloudy
Tonight
Partly Cloudy
Saturday
Sunny
Saturday Night
Partly Cloudy
Sunday
Partly Sunny
Sunday Night
Mostly Clear then Patchy Frost
Detailed Forecast |
|
|---|---|
| This Afternoon | Mostly cloudy, with a high near 66. Northwest wind around 9 mph. |
| Tonight | Partly cloudy, with a low around 43. Northwest wind 3 to 7 mph. |
| Saturday | Sunny, with a high near 62. West wind 3 to 12 mph. |
| Saturday Night | Partly cloudy, with a low around 39. Northwest wind 2 to 9 mph. |
| Sunday | Partly sunny, with a high near 59. Northwest wind 2 to 7 mph. |
| Sunday Night | Patchy frost after 5am. Mostly clear, with a low around 37. |
| Monday | Sunny, with a high near 66. |
| Monday Night | Mostly clear, with a low around 42. |
| Tuesday | A chance of rain showers after 2pm. Partly sunny, with a high near 70. Chance of precipitation is 30%. |
| Tuesday Night | A chance of rain showers before 8pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 50. Chance of precipitation is 70%. |
| Wednesday | A chance of showers and thunderstorms before 2pm. Mostly sunny, with a high near 65. Chance of precipitation is 50%. |
| Wednesday Night | Mostly clear, with a low around 37. |
| Thursday | Sunny, with a high near 64. |
| Thursday Night | A chance of rain showers after 8pm. Partly cloudy, with a low around 42. Chance of precipitation is 30%. |
