Weather in South Portsmouth, RI
South Portsmouth, Sunday, 9 August, 13:25
Mostly clear. Feels like 96°. High 88°, low 70°.
Monthly outlook for South Portsmouth, RI: average high 79.4°, average low 64.9°. That is 0.2° above the climate normal for August. Precipitation is expected on 4 days (about 2.2 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 9 August (88.4°), the coolest 16 August (58.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 80.3° | 79.8° | +0.3° |
| 19 August – 28 August | 78.1° | 78.1° | -0° |
| 29 August – 7 September | at normal | 76.4° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Warwick (14 mi).
0
South Portsmouth, Monday, 10 August
Clear. High 87°, low 68°.
0
South Portsmouth, Tuesday, 11 August
Overcast. High 86°, low 69°.
0South Portsmouth, Wednesday, 12 August
Overcast. High 79°, low 64°.
0.03
South Portsmouth, Thursday, 13 August
Light rain. High 84°, low 68°.
0South Portsmouth, Friday, 14 August
Clear. High 77°, low 61°.
0South Portsmouth, Saturday, 15 August
Clear. High 78°, low 59°.
0South Portsmouth, Sunday, 16 August
Mostly clear. High 77°, low 58°.
1.52South Portsmouth, Monday, 17 August
Heavy rain. High 71°, low 65°.
0.29South Portsmouth, Tuesday, 18 August
Rain. High 76°, low 63°.
0South Portsmouth, Wednesday, 19 August
Overcast. High 75°, low 67°.
0.07South Portsmouth, Thursday, 20 August
Light rain. High 79°, low 69°.
0South Portsmouth, Friday, 21 August
Overcast. High 77°, low 65°.
0South Portsmouth, Saturday, 22 August
Clear. High 80°, low 64°.
0.34South Portsmouth, Sunday, 23 August
Rain. High 80°, low 69°.
0South Portsmouth, Monday, 24 August
Clear. High 78°, low 60°.
0.08
South Portsmouth, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.07South Portsmouth, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.09South Portsmouth, Thursday, 27 August
Climate normal for this date — 60-year average.
0.13
South Portsmouth, Friday, 28 August
Climate normal for this date — 60-year average.
0.19South Portsmouth, Saturday, 29 August
Climate normal for this date — 60-year average.
0.13South Portsmouth, Sunday, 30 August
Climate normal for this date — 60-year average.
0.06South Portsmouth, Monday, 31 August
Climate normal for this date — 60-year average.
0.07South Portsmouth, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.18South Portsmouth, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.13South Portsmouth, Thursday, 3 September
Climate normal for this date — 60-year average.
0.13South Portsmouth, Friday, 4 September
Climate normal for this date — 60-year average.
0.06South Portsmouth, Saturday, 5 September
Climate normal for this date — 60-year average.
0.15South Portsmouth, Sunday, 6 September
Climate normal for this date — 60-year average.
0.11South Portsmouth, Monday, 7 September
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for South Portsmouth, RI are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in South Portsmouth, RI since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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