Weather in Grantville, MA
Grantville, Monday, 26 October, 05:27
Clear. Feels like 38°. High 71°, low 39°.
Monthly outlook for Grantville, MA: average high 57.5°, average low 41.9°. That is 1.3° above the climate normal for October. Precipitation is expected on 5 days (about 3.6 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 26 October (70.6°), the coolest 5 November (32.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 26 October – 4 November | 60.4° | 56.3° | +2.3° |
| 5 November – 14 November | 52.6° | 51.8° | +0.4° |
| 15 November – 24 November | at normal | 47.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Watertown Town (6 mi).
0
Grantville, Tuesday, 27 October
Clear. High 55°, low 35°.
0Grantville, Wednesday, 28 October
Clear. High 56°, low 33°.
0Grantville, Thursday, 29 October
Clear. High 65°, low 44°.
0Grantville, Friday, 30 October
Clear. High 70°, low 52°.
0
Grantville, Saturday, 31 October
Mostly clear. High 65°, low 46°.
0
Grantville, Sunday, 1 November
Overcast. High 62°, low 42°.
0.09
Grantville, Monday, 2 November
Light rain. High 59°, low 54°.
0.09Grantville, Tuesday, 3 November
Light rain. High 55°, low 41°.
0Grantville, Wednesday, 4 November
Clear. High 47°, low 33°.
0Grantville, Thursday, 5 November
Mostly clear. High 51°, low 33°.
0.63Grantville, Friday, 6 November
Heavy rain. High 50°, low 39°.
1.67Grantville, Saturday, 7 November
Heavy rain. High 56°, low 47°.
1.17Grantville, Sunday, 8 November
Rain. High 55°, low 46°.
0Grantville, Monday, 9 November
Overcast. High 49°, low 42°.
0Grantville, Tuesday, 10 November
Clear. High 55°, low 42°.
0.11
Grantville, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.14Grantville, Thursday, 12 November
Climate normal for this date — 60-year average.
0.18Grantville, Friday, 13 November
Climate normal for this date — 60-year average.
0.13
Grantville, 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.
0.17Grantville, 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.
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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