Weather in Arlington, MA
Arlington, Saturday, 8 August, 23:59
Partly cloudy. Feels like 75°. High 87°, low 71°.
Monthly outlook for Arlington, MA: average high 82.1°, average low 61.6°. That is 1.3° above the climate normal for August. Precipitation is expected on 4 days (about 0.9 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 9 August (92.9°), the coolest 22 August (54.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 83.7° | 80.5° | +1.8° |
| 18 August – 27 August | 79.4° | 78.6° | +0.4° |
| 28 August – 6 September | at normal | 76.8° | — |
August records over 66 years
0.01
Arlington, Sunday, 9 August
Light rain. High 93°, low 72°.
0
Arlington, Monday, 10 August
Partly cloudy. High 93°, low 70°.
0.02Arlington, Tuesday, 11 August
Light rain. High 89°, low 68°.
0.17Arlington, Wednesday, 12 August
Light rain. High 69°, low 61°.
0.02Arlington, Thursday, 13 August
Light rain. High 84°, low 60°.
0
Arlington, Friday, 14 August
Clear. High 77°, low 57°.
0
Arlington, Saturday, 15 August
Mostly clear. High 80°, low 58°.
0Arlington, Sunday, 16 August
Clear. High 80°, low 57°.
0
Arlington, Monday, 17 August
Overcast. High 84°, low 57°.
0.1Arlington, Tuesday, 18 August
Light rain. High 79°, low 63°.
0Arlington, Wednesday, 19 August
Overcast. High 84°, low 60°.
0.39Arlington, Thursday, 20 August
Rain. High 78°, low 62°.
0Arlington, Friday, 21 August
Clear. High 73°, low 58°.
0Arlington, Saturday, 22 August
Clear. High 78°, low 54°.
0.02Arlington, Sunday, 23 August
Light rain. High 84°, low 58°.
0.07Arlington, Monday, 24 August
Climate normal for this date — 60-year average.
0.1Arlington, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.06Arlington, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.09
Arlington, Thursday, 27 August
Climate normal for this date — 60-year average.
0.12Arlington, Friday, 28 August
Climate normal for this date — 60-year average.
0.16Arlington, Saturday, 29 August
Climate normal for this date — 60-year average.
0.13Arlington, Sunday, 30 August
Climate normal for this date — 60-year average.
0.07Arlington, Monday, 31 August
Climate normal for this date — 60-year average.
0.05Arlington, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.15Arlington, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.12Arlington, Thursday, 3 September
Climate normal for this date — 60-year average.
0.11Arlington, Friday, 4 September
Climate normal for this date — 60-year average.
0.07Arlington, Saturday, 5 September
Climate normal for this date — 60-year average.
0.15Arlington, Sunday, 6 September
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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