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. | ||||||||||||
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Overnight
Rain Showers Likely
Wednesday
Chance Showers And Thunderstorms
Wednesday Night
Chance Rain Showers then Chance Rain And Snow Showers
Thursday
Slight Chance Snow Showers then Mostly Cloudy
Thursday Night
Partly Cloudy
Friday
Mostly Cloudy
Detailed Forecast |
|
|---|---|
| Overnight | Rain showers likely. Mostly cloudy, with a low around 54. South wind around 10 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Wednesday | Rain showers likely before 8am, then a chance of showers and thunderstorms. Partly sunny. High near 63, with temperatures falling to around 51 in the afternoon. Southwest wind 9 to 17 mph, with gusts as high as 36 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible. |
| Wednesday Night | A chance of rain showers before 1am, then a chance of rain and snow showers. Cloudy, with a low around 30. West wind 10 to 14 mph, with gusts as high as 33 mph. Chance of precipitation is 50%. New snow accumulation of less than half an inch possible. |
| Thursday | A slight chance of snow showers before 8am. Mostly cloudy, with a high near 44. West wind 10 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 20%. New snow accumulation of less than half an inch possible. |
| Thursday Night | Partly cloudy, with a low around 29. West wind 2 to 10 mph. |
| Friday | Mostly cloudy, with a high near 52. |
| Friday Night | Rain likely after 7pm. Mostly cloudy, with a low around 35. Chance of precipitation is 60%. |
| Saturday | Rain likely before 7am. Mostly sunny, with a high near 49. Chance of precipitation is 60%. |
| Saturday Night | Partly cloudy, with a low around 31. |
| Sunday | Mostly sunny, with a high near 53. |
| Sunday Night | Mostly clear, with a low around 32. |
| Monday | Sunny, with a high near 61. |
| Monday Night | Clear, with a low around 41. |
| Tuesday | Sunny, with a high near 70. |
