Weather in Rio Vista, MA
Rio Vista, Sunday, 9 August, 05:18
Mostly clear. Feels like 69°. High 93°, low 68°.
Monthly outlook for Rio Vista, MA: average high 85°, average low 62.7°. That is 3.1° above the climate normal for August. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 22 August (94.9°), the coolest 15 August (54.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 83.7° | 80.3° | +1.9° |
| 19 August – 28 August | 87.3° | 78.5° | +4.9° |
| 29 August – 7 September | at normal | 76.6° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Arlington (11 mi).
0.02
Rio Vista, Monday, 10 August
Light rain. High 90°, low 68°.
0.04Rio Vista, Tuesday, 11 August
Light rain. High 87°, low 65°.
0
Rio Vista, Wednesday, 12 August
Overcast. High 87°, low 64°.
0.01Rio Vista, Thursday, 13 August
Light rain. High 80°, low 62°.
0
Rio Vista, Friday, 14 August
Clear. High 74°, low 56°.
0Rio Vista, Saturday, 15 August
Clear. High 77°, low 55°.
0Rio Vista, Sunday, 16 August
Overcast. High 81°, low 57°.
0Rio Vista, Monday, 17 August
Light rain. High 83°, low 61°.
0Rio Vista, Tuesday, 18 August
Clear. High 84°, low 57°.
0Rio Vista, Wednesday, 19 August
Overcast. High 83°, low 59°.
0Rio Vista, Thursday, 20 August
Overcast. High 89°, low 63°.
0.07Rio Vista, Friday, 21 August
Light rain. High 92°, low 69°.
0Rio Vista, Saturday, 22 August
Overcast. High 95°, low 71°.
0Rio Vista, Sunday, 23 August
Clear. High 90°, low 65°.
0.01Rio Vista, Monday, 24 August
Light rain. High 76°, low 63°.
0.1
Rio Vista, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.06
Rio Vista, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.09
Rio Vista, Thursday, 27 August
Climate normal for this date — 60-year average.
0.12Rio Vista, Friday, 28 August
Climate normal for this date — 60-year average.
0.16Rio Vista, Saturday, 29 August
Climate normal for this date — 60-year average.
0.13Rio Vista, Sunday, 30 August
Climate normal for this date — 60-year average.
0.07Rio Vista, Monday, 31 August
Climate normal for this date — 60-year average.
0.05Rio Vista, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.15Rio Vista, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.12Rio Vista, Thursday, 3 September
Climate normal for this date — 60-year average.
0.11Rio Vista, Friday, 4 September
Climate normal for this date — 60-year average.
0.07Rio Vista, Saturday, 5 September
Climate normal for this date — 60-year average.
0.15Rio Vista, Sunday, 6 September
Climate normal for this date — 60-year average.
0.11Rio Vista, Monday, 7 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 Rio Vista, 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 Rio Vista, 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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