Weather in Grantville, MA
Grantville, Thursday, 29 October, 13:40
Clear. Feels like 66°. High 67°, low 41°.
Monthly outlook for Grantville, MA: average high 57.3°, average low 40.7°. That is 1.9° above the climate normal for October. Precipitation is expected on 2 days (about 0.7 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 30 October (68.5°), the coolest 9 November (33.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 29 October – 7 November | 62.2° | 55.4° | +3.8° |
| 8 November – 17 November | 49° | 50.4° | -0.8° |
| 18 November – 27 November | at normal | 46.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Watertown Town (6 mi).
0Grantville, Friday, 30 October
Clear. High 68°, low 46°.
0Grantville, Saturday, 31 October
Clear. High 52°, low 38°.
0Grantville, Sunday, 1 November
Clear. High 56°, low 35°.
0Grantville, Monday, 2 November
Clear. High 67°, low 42°.
0
Grantville, Tuesday, 3 November
Overcast. High 67°, low 48°.
0
Grantville, Wednesday, 4 November
Mostly clear. High 55°, low 44°.
0
Grantville, Thursday, 5 November
Partly cloudy. High 60°, low 42°.
0.6
Grantville, Friday, 6 November
Rain. High 65°, low 60°.
0.13Grantville, Saturday, 7 November
Light rain. High 65°, low 41°.
0Grantville, Sunday, 8 November
Clear. High 45°, low 34°.
0Grantville, Monday, 9 November
Clear. High 49°, low 34°.
0Grantville, Tuesday, 10 November
Overcast. High 52°, low 35°.
0Grantville, Wednesday, 11 November
Overcast. High 51°, low 38°.
0Grantville, Thursday, 12 November
Overcast. High 44°, low 37°.
0Grantville, Friday, 13 November
Clear. High 52°, low 36°.
0.13Grantville, Saturday, 14 November
Climate normal for this date — 60-year average.
0.11Grantville, Sunday, 15 November
Climate normal for this date — 60-year average.
0.15Grantville, Monday, 16 November
Climate normal for this date — 60-year average.
0.13Grantville, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.07Grantville, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.05Grantville, Thursday, 19 November
Climate normal for this date — 60-year average.
0.11Grantville, Friday, 20 November
Climate normal for this date — 60-year average.
0.1Grantville, Saturday, 21 November
Climate normal for this date — 60-year average.
0.17
Grantville, Sunday, 22 November
Climate normal for this date — 60-year average.
0.13Grantville, Monday, 23 November
Climate normal for this date — 60-year average.
0.07Grantville, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.15Grantville, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.17Grantville, Thursday, 26 November
Climate normal for this date — 60-year average.
0.11Grantville, Friday, 27 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, 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 Grantville, 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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