Weather in Arlington, MA
Arlington, Monday, 19 October, 11:49
Clear. Feels like 55°. High 58°, low 33°.
Monthly outlook for Arlington, MA: average high 57.4°, average low 41.1°. That is 0.1° below the climate normal for October. Precipitation is expected on 5 days (about 4.9 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 28 October (69.1°), the coolest 30 October (31.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 19 October – 28 October | 59.6° | 58.6° | +0.5° |
| 29 October – 7 November | 53.8° | 55.3° | -0.9° |
| 8 November – 17 November | at normal | 50.3° | — |
October records over 66 years
0Arlington, Tuesday, 20 October
Clear. High 64°, low 36°.
0
Arlington, Wednesday, 21 October
Overcast. High 53°, low 39°.
0Arlington, Thursday, 22 October
Clear. High 61°, low 37°.
0
Arlington, Friday, 23 October
Partly cloudy. High 52°, low 39°.
0Arlington, Saturday, 24 October
Clear. High 56°, low 37°.
0Arlington, Sunday, 25 October
Clear. High 63°, low 39°.
0Arlington, Monday, 26 October
Overcast. High 62°, low 45°.
0Arlington, Tuesday, 27 October
Overcast. High 59°, low 48°.
0.24
Arlington, Wednesday, 28 October
Rain. High 69°, low 47°.
0.04Arlington, Thursday, 29 October
Light rain. High 42°, low 34°.
0
Arlington, Friday, 30 October
Mostly clear. High 52°, low 32°.
0Arlington, Saturday, 31 October
Overcast. High 61°, low 42°.
0.45Arlington, Sunday, 1 November
Rain. High 57°, low 47°.
1.12Arlington, Monday, 2 November
Heavy rain. High 55°, low 52°.
3.04Arlington, Tuesday, 3 November
Heavy rain. High 55°, low 52°.
0.04Arlington, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.15
Arlington, Thursday, 5 November
Climate normal for this date — 60-year average.
0.12Arlington, Friday, 6 November
Climate normal for this date — 60-year average.
0.05Arlington, Saturday, 7 November
Climate normal for this date — 60-year average.
0.09Arlington, Sunday, 8 November
Climate normal for this date — 60-year average.
0.09Arlington, Monday, 9 November
Climate normal for this date — 60-year average.
0.16Arlington, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.11Arlington, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.14Arlington, Thursday, 12 November
Climate normal for this date — 60-year average.
0.16Arlington, Friday, 13 November
Climate normal for this date — 60-year average.
0.13Arlington, Saturday, 14 November
Climate normal for this date — 60-year average.
0.12Arlington, Sunday, 15 November
Climate normal for this date — 60-year average.
0.15Arlington, Monday, 16 November
Climate normal for this date — 60-year average.
0.13Arlington, Tuesday, 17 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 Arlington, 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 Arlington, 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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