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 | 34° | 36° | 44° | 55° | 66° | 76° | 81° | 78° | 71° | 61° | 48° | 37° |
| Avg. Low | 14° | 15° | 24° | 34° | 42° | 51° | 57° | 55° | 47° | 37° | 30° | 18° |
| Daily Avg | 24° | 26° | 35° | 44° | 55° | 64° | 68° | 68° | 60° | 50° | 40° | 28° |
| Avg. Precip. | 3.8 in | 3.7 in | 3.8 in | 4.3 in | 3.5 in | 3.4 in | 3.3 in | 3.1 in | 3.4 in | 4.0 in | 5.1 in | 4.6 in |
| Note: All temperatures are in degrees Fahrenheit. | ||||||||||||
This Afternoon
Partly Sunny
Tonight
Mostly Cloudy then Light Rain
Saturday
Light Rain then Slight Chance Rain Showers
Saturday Night
Mostly Clear
Sunday
Sunny
Sunday Night
Mostly Clear
Detailed Forecast |
|
|---|---|
| This Afternoon | Partly sunny, with a high near 50. Southeast wind around 10 mph. |
| Tonight | A slight chance of rain showers between 1am and 2am, then rain. Mostly cloudy, with a low around 43. South wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Saturday | Rain before 11am, then a slight chance of rain showers between 11am and 1pm. Mostly cloudy, with a high near 60. Southwest wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible. |
| Saturday Night | Mostly clear, with a low around 38. West wind around 10 mph, with gusts as high as 25 mph. |
| Sunday | Sunny, with a high near 57. West wind 10 to 15 mph, with gusts as high as 25 mph. |
| Sunday Night | Mostly clear, with a low around 39. |
| Monday | Sunny, with a high near 55. |
| Monday Night | Clear, with a low around 37. |
| Tuesday | Mostly sunny, with a high near 56. |
| Tuesday Night | A chance of rain showers after 2am. Mostly cloudy, with a low around 43. Chance of precipitation is 30%. |
| Wednesday | A chance of rain showers before 8am, then a chance of rain. Mostly cloudy, with a high near 56. Chance of precipitation is 50%. |
| Wednesday Night | A chance of rain. Partly cloudy, with a low around 34. Chance of precipitation is 50%. |
| Thursday | A slight chance of rain before 8am, then a slight chance of rain showers. Mostly sunny, with a high near 51. |
| Thursday Night | A slight chance of rain showers before 8pm. Mostly clear, with a low around 36. |
