Weather in Mount Parnassus, CT
Mount Parnassus, Tuesday, 20 October, 05:20
Clear. Feels like 40°. High 66°, low 42°.
Monthly outlook for Mount Parnassus, CT: average high 56.8°, average low 38.9°. That is 0.6° below the climate normal for October. Precipitation is expected on 1 day (about 0.9 inches), against a normal of 4 days and 2.0 inches. The warmest day looks like 27 October (68.8°), the coolest 29 October (31.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 58.7° | 58.6° | +0° |
| 30 October – 8 November | 53.7° | 55.7° | -1.1° |
| 9 November – 18 November | at normal | 51.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Old Lyme (12 mi).
0
Mount Parnassus, Wednesday, 21 October
Partly cloudy. High 58°, low 38°.
0
Mount Parnassus, Thursday, 22 October
Clear. High 61°, low 42°.
0Mount Parnassus, Friday, 23 October
Clear. High 50°, low 39°.
0
Mount Parnassus, Saturday, 24 October
Mostly clear. High 55°, low 34°.
0Mount Parnassus, Sunday, 25 October
Clear. High 62°, low 37°.
0
Mount Parnassus, Monday, 26 October
Overcast. High 66°, low 46°.
0Mount Parnassus, Tuesday, 27 October
Partly cloudy. High 69°, low 53°.
0Mount Parnassus, Wednesday, 28 October
Overcast. High 51°, low 35°.
0Mount Parnassus, Thursday, 29 October
Overcast. High 49°, low 31°.
0Mount Parnassus, Friday, 30 October
Overcast. High 54°, low 34°.
0Mount Parnassus, Saturday, 31 October
Overcast. High 55°, low 41°.
0Mount Parnassus, Sunday, 1 November
Clear. High 53°, low 37°.
0Mount Parnassus, Monday, 2 November
Clear. High 51°, low 34°.
0Mount Parnassus, Tuesday, 3 November
Clear. High 55°, low 36°.
0.86
Mount Parnassus, Wednesday, 4 November
Heavy rain. High 54°, low 43°.
0.15
Mount Parnassus, Thursday, 5 November
Climate normal for this date — 60-year average.
0.11Mount Parnassus, Friday, 6 November
Climate normal for this date — 60-year average.
0.07Mount Parnassus, Saturday, 7 November
Climate normal for this date — 60-year average.
0.13Mount Parnassus, Sunday, 8 November
Climate normal for this date — 60-year average.
0.09Mount Parnassus, Monday, 9 November
Climate normal for this date — 60-year average.
0.18Mount Parnassus, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.16Mount Parnassus, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.16Mount Parnassus, Thursday, 12 November
Climate normal for this date — 60-year average.
0.21Mount Parnassus, Friday, 13 November
Climate normal for this date — 60-year average.
0.09Mount Parnassus, Saturday, 14 November
Climate normal for this date — 60-year average.
0.13Mount Parnassus, Sunday, 15 November
Climate normal for this date — 60-year average.
0.15Mount Parnassus, Monday, 16 November
Climate normal for this date — 60-year average.
0.15Mount Parnassus, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.08Mount Parnassus, Wednesday, 18 November
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 Mount Parnassus, 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 Mount Parnassus, 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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