Weather in Center Groton, CT
Center Groton, Sunday, 9 August, 04:09
Clear. Feels like 75°. High 89°, low 73°.
Monthly outlook for Center Groton, CT: average high 80.7°, average low 65.3°. That is 1° above the climate normal for August. Precipitation is expected on 7 days (about 0.8 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 9 August (89.2°), the coolest 15 August (57.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 79.9° | 79.5° | +0.2° |
| 19 August – 28 August | 81.9° | 78° | +2.2° |
| 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 (8 mi).
0.01
Center Groton, Monday, 10 August
Light rain. High 85°, low 68°.
0.08Center Groton, Tuesday, 11 August
Light rain. High 84°, low 69°.
0.01Center Groton, Wednesday, 12 August
Light rain. High 75°, low 65°.
0.24Center Groton, Thursday, 13 August
Light rain. High 80°, low 66°.
0
Center Groton, Friday, 14 August
Clear. High 74°, low 58°.
0Center Groton, Saturday, 15 August
Clear. High 78°, low 58°.
0
Center Groton, Sunday, 16 August
Overcast. High 78°, low 59°.
0.13Center Groton, Monday, 17 August
Light rain. High 77°, low 61°.
0.08Center Groton, Tuesday, 18 August
Light rain. High 78°, low 60°.
0.01Center Groton, Wednesday, 19 August
Light rain. High 79°, low 63°.
0Center Groton, Thursday, 20 August
Overcast. High 79°, low 67°.
0.06Center Groton, Friday, 21 August
Light rain. High 82°, low 70°.
0.15Center Groton, Saturday, 22 August
Rain. High 85°, low 72°.
0Center Groton, Sunday, 23 August
Clear. High 85°, low 68°.
0.09Center Groton, Monday, 24 August
Light rain. High 82°, low 68°.
0.09
Center Groton, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.09Center Groton, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.11Center Groton, Thursday, 27 August
Climate normal for this date — 60-year average.
0.19
Center Groton, Friday, 28 August
Climate normal for this date — 60-year average.
0.17Center Groton, Saturday, 29 August
Climate normal for this date — 60-year average.
0.11Center Groton, Sunday, 30 August
Climate normal for this date — 60-year average.
0.05Center Groton, Monday, 31 August
Climate normal for this date — 60-year average.
0.08Center Groton, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.22Center Groton, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.12Center Groton, Thursday, 3 September
Climate normal for this date — 60-year average.
0.13Center Groton, Friday, 4 September
Climate normal for this date — 60-year average.
0.06
Center Groton, Saturday, 5 September
Climate normal for this date — 60-year average.
0.15Center Groton, Sunday, 6 September
Climate normal for this date — 60-year average.
0.11Center Groton, 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 Center Groton, 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 Center Groton, 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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