Weather in South Chatham, MA
South Chatham, Sunday, 9 August, 07:25
Clear. Feels like 78°. High 90°, low 72°.
0South Chatham, Monday, 10 August
Clear. High 86°, low 70°.
0.1
South Chatham, Tuesday, 11 August
Rain. High 80°, low 72°.
0.02South Chatham, Wednesday, 12 August
Light rain. High 76°, low 69°.
0.43South Chatham, Thursday, 13 August
Rain. High 77°, low 70°.
0South Chatham, Friday, 14 August
Clear. High 75°, low 63°.
0South Chatham, Saturday, 15 August
Clear. High 73°, low 61°.
0
South Chatham, Sunday, 16 August
Overcast. High 72°, low 67°.
0.15South Chatham, Monday, 17 August
Light rain. High 75°, low 67°.
0.24South Chatham, Tuesday, 18 August
Light rain. High 75°, low 67°.
0South Chatham, Wednesday, 19 August
Overcast. High 76°, low 68°.
0
South Chatham, Thursday, 20 August
Partly cloudy. High 78°, low 70°.
0South Chatham, Friday, 21 August
Overcast. High 78°, low 73°.
0.2South Chatham, Saturday, 22 August
Light rain. High 80°, low 74°.
0.02South Chatham, Sunday, 23 August
Light rain. High 73°, low 68°.
0.01South Chatham, Monday, 24 August
Light rain. High 73°, low 67°.
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 Chatham, 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 Chatham, 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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