Weather in South Harpswell, ME
South Harpswell, Saturday, 8 August, 21:38
Overcast. Feels like 71°. High 78°, low 70°.
Monthly outlook for South Harpswell, ME: average high 71.4°, average low 63.4°. That is 1.7° below the climate normal for August. Precipitation is expected on 5 days (about 1.9 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 9 August (84.1°), the coolest 23 August (58.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 73.1° | 75.1° | -1.1° |
| 18 August – 27 August | 68.7° | 73.5° | -2.7° |
| 28 August – 6 September | at normal | 71.8° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Portland (14 mi).
0.04
South Harpswell, Sunday, 9 August
Light rain. High 84°, low 70°.
0.03South Harpswell, Monday, 10 August
Light rain. High 78°, low 67°.
0.07South Harpswell, Tuesday, 11 August
Light rain. High 76°, low 64°.
0.27South Harpswell, Wednesday, 12 August
Rain. High 67°, low 62°.
0.16South Harpswell, Thursday, 13 August
Light rain. High 69°, low 63°.
0
South Harpswell, Friday, 14 August
Clear. High 70°, low 61°.
0South Harpswell, Saturday, 15 August
Clear. High 73°, low 59°.
0South Harpswell, Sunday, 16 August
Clear. High 69°, low 60°.
0
South Harpswell, Monday, 17 August
Partly cloudy. High 69°, low 63°.
0South Harpswell, Tuesday, 18 August
Overcast. High 68°, low 65°.
0South Harpswell, Wednesday, 19 August
Overcast. High 68°, low 65°.
1South Harpswell, Thursday, 20 August
Rain. High 67°, low 64°.
0.01South Harpswell, Friday, 21 August
Light rain. High 70°, low 61°.
0South Harpswell, Saturday, 22 August
Clear. High 71°, low 60°.
0.01South Harpswell, Sunday, 23 August
Light rain. High 68°, low 59°.
0.07South Harpswell, Monday, 24 August
Climate normal for this date — 60-year average.
0.11South Harpswell, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.04
South Harpswell, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.05South Harpswell, Thursday, 27 August
Climate normal for this date — 60-year average.
0.14South Harpswell, Friday, 28 August
Climate normal for this date — 60-year average.
0.15South Harpswell, Saturday, 29 August
Climate normal for this date — 60-year average.
0.14South Harpswell, Sunday, 30 August
Climate normal for this date — 60-year average.
0.09South Harpswell, Monday, 31 August
Climate normal for this date — 60-year average.
0.03South Harpswell, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.11South Harpswell, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.11South Harpswell, Thursday, 3 September
Climate normal for this date — 60-year average.
0.14
South Harpswell, Friday, 4 September
Climate normal for this date — 60-year average.
0.08South Harpswell, Saturday, 5 September
Climate normal for this date — 60-year average.
0.12South Harpswell, Sunday, 6 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 Harpswell, ME 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 Harpswell, ME 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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