Weather in Mystic Seaport, CT
Mystic Seaport, Sunday, 9 August, 09:12
Overcast. Feels like 80°. High 90°, low 71°.
Monthly outlook for Mystic Seaport, CT: average high 79.6°, average low 65.4°. That is 0.4° above the climate normal for August. Precipitation is expected on 3 days (about 2.1 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 9 August (90.4°), the coolest 15 August (57.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 80.1° | 79.5° | +0.3° |
| 19 August – 28 August | 78.8° | 78° | +0.4° |
| 29 August – 7 September | at normal | 76.5° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Fishers Island (6 mi).
0
Mystic Seaport, Monday, 10 August
Clear. High 87°, low 69°.
0.02
Mystic Seaport, Tuesday, 11 August
Light rain. High 85°, low 70°.
0Mystic Seaport, Wednesday, 12 August
Overcast. High 78°, low 65°.
0.02Mystic Seaport, Thursday, 13 August
Light rain. High 82°, low 69°.
0Mystic Seaport, Friday, 14 August
Clear. High 76°, low 61°.
0Mystic Seaport, Saturday, 15 August
Clear. High 78°, low 58°.
0Mystic Seaport, Sunday, 16 August
Clear. High 76°, low 58°.
1.35Mystic Seaport, Monday, 17 August
Heavy rain. High 71°, low 67°.
0.03Mystic Seaport, Tuesday, 18 August
Light rain. High 79°, low 64°.
0.01Mystic Seaport, Wednesday, 19 August
Light rain. High 76°, low 68°.
0.15Mystic Seaport, Thursday, 20 August
Light rain. High 79°, low 67°.
0
Mystic Seaport, Friday, 21 August
Partly cloudy. High 77°, low 64°.
0Mystic Seaport, Saturday, 22 August
Clear. High 80°, low 66°.
0.55Mystic Seaport, Sunday, 23 August
Rain. High 83°, low 69°.
0Mystic Seaport, Monday, 24 August
Clear. High 77°, low 61°.
0.09Mystic Seaport, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.09Mystic Seaport, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.11Mystic Seaport, Thursday, 27 August
Climate normal for this date — 60-year average.
0.19
Mystic Seaport, Friday, 28 August
Climate normal for this date — 60-year average.
0.17Mystic Seaport, Saturday, 29 August
Climate normal for this date — 60-year average.
0.11Mystic Seaport, Sunday, 30 August
Climate normal for this date — 60-year average.
0.05Mystic Seaport, Monday, 31 August
Climate normal for this date — 60-year average.
0.08Mystic Seaport, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.22Mystic Seaport, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.12Mystic Seaport, Thursday, 3 September
Climate normal for this date — 60-year average.
0.13Mystic Seaport, Friday, 4 September
Climate normal for this date — 60-year average.
0.06
Mystic Seaport, Saturday, 5 September
Climate normal for this date — 60-year average.
0.15Mystic Seaport, Sunday, 6 September
Climate normal for this date — 60-year average.
0.11Mystic Seaport, 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 Mystic Seaport, CT 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 Mystic Seaport, CT 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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