Weather in Grantville, CT
Grantville, Tuesday, 20 October, 06:56
Clear. Feels like 42°. High 63°, low 38°.
Monthly outlook for Grantville, CT: average high 53.2°, average low 33.8°. That is 1.8° below the climate normal for October. Precipitation is expected on 1 day (about 1.0 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 27 October (65.9°), the coolest 29 October (27.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 56.3° | 57.3° | -0.6° |
| 30 October – 8 November | 48.1° | 54° | -3.3° |
| 9 November – 18 November | at normal | 48.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Riverton (7 mi).
0
Grantville, Wednesday, 21 October
Clear. High 57°, low 33°.
0Grantville, Thursday, 22 October
Clear. High 57°, low 38°.
0Grantville, Friday, 23 October
Clear. High 47°, low 35°.
0
Grantville, Saturday, 24 October
Mostly clear. High 53°, low 32°.
0Grantville, Sunday, 25 October
Clear. High 62°, low 35°.
0
Grantville, Monday, 26 October
Overcast. High 66°, low 42°.
0.01
Grantville, Tuesday, 27 October
Light rain. High 66°, low 44°.
0Grantville, Wednesday, 28 October
Light rain. High 45°, low 28°.
0Grantville, Thursday, 29 October
Mostly clear. High 46°, low 27°.
0Grantville, Friday, 30 October
Overcast. High 49°, low 29°.
0Grantville, Saturday, 31 October
Overcast. High 49°, low 34°.
0Grantville, Sunday, 1 November
Clear. High 48°, low 32°.
0Grantville, Monday, 2 November
Clear. High 47°, low 28°.
0Grantville, Tuesday, 3 November
Clear. High 51°, low 31°.
0.95Grantville, Wednesday, 4 November
Rain. High 44°, low 35°.
0.15
Grantville, Thursday, 5 November
Climate normal for this date — 60-year average.
0.11
Grantville, Friday, 6 November
Climate normal for this date — 60-year average.
0.08Grantville, Saturday, 7 November
Climate normal for this date — 60-year average.
0.15Grantville, Sunday, 8 November
Climate normal for this date — 60-year average.
0.11Grantville, Monday, 9 November
Climate normal for this date — 60-year average.
0.14Grantville, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.17Grantville, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.16Grantville, Thursday, 12 November
Climate normal for this date — 60-year average.
0.19Grantville, Friday, 13 November
Climate normal for this date — 60-year average.
0.13Grantville, Saturday, 14 November
Climate normal for this date — 60-year average.
0.14Grantville, Sunday, 15 November
Climate normal for this date — 60-year average.
0.15Grantville, Monday, 16 November
Climate normal for this date — 60-year average.
0.14Grantville, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.09Grantville, 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 Grantville, 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 Grantville, 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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