Weather in South Yarmouth, MA
South Yarmouth, Sunday, 9 August, 16:34
Clear. Feels like 94°. High 87°, low 70°.
0
South Yarmouth, Monday, 10 August
Partly cloudy. High 87°, low 69°.
0.04
South Yarmouth, Tuesday, 11 August
Light rain. High 80°, low 71°.
0.1South Yarmouth, Wednesday, 12 August
Light rain. High 77°, low 70°.
0.09South Yarmouth, Thursday, 13 August
Light rain. High 80°, low 68°.
0South Yarmouth, Friday, 14 August
Partly cloudy. High 72°, low 66°.
0
South Yarmouth, Saturday, 15 August
Overcast. High 70°, low 66°.
0.16South Yarmouth, Sunday, 16 August
Rain. High 75°, low 67°.
0.15South Yarmouth, Monday, 17 August
Rain. High 75°, low 66°.
0South Yarmouth, Tuesday, 18 August
Overcast. High 78°, low 65°.
0.43South Yarmouth, Wednesday, 19 August
Rain. High 76°, low 71°.
0
South Yarmouth, Thursday, 20 August
Mostly clear. High 72°, low 67°.
0.09South Yarmouth, Friday, 21 August
Light rain. High 77°, low 71°.
0South Yarmouth, Saturday, 22 August
Overcast. High 71°, low 65°.
0South Yarmouth, Sunday, 23 August
Clear. High 75°, low 65°.
0.02South Yarmouth, Monday, 24 August
Light rain. High 79°, low 68°.
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 Yarmouth, MA 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 Yarmouth, MA 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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