Weather in Altamont, CA
Altamont, Saturday, 8 August, 18:59
Clear. Feels like 82°. High 86°, low 58°.
Monthly outlook for Altamont, CA: average high 88°, average low 57.6°. That is 1.4° below the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 0 days and 0.1 inches. The warmest day looks like 10 August (96.9°), the coolest 20 August (52.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 89.3° | 91.5° | -1.3° |
| 18 August – 27 August | 86° | 89.3° | -1.8° |
| 28 August – 6 September | at normal | 90.3° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Tracy (12 mi).
0Altamont, Sunday, 9 August
Clear. High 93°, low 61°.
0
Altamont, Monday, 10 August
Overcast. High 97°, low 62°.
0Altamont, Tuesday, 11 August
Clear. High 96°, low 62°.
0Altamont, Wednesday, 12 August
Overcast. High 94°, low 63°.
0Altamont, Thursday, 13 August
Overcast. High 86°, low 60°.
0Altamont, Friday, 14 August
Clear. High 86°, low 56°.
0Altamont, Saturday, 15 August
Clear. High 86°, low 57°.
0Altamont, Sunday, 16 August
Overcast. High 85°, low 56°.
0Altamont, Monday, 17 August
Overcast. High 84°, low 57°.
0Altamont, Tuesday, 18 August
Overcast. High 84°, low 59°.
0Altamont, Wednesday, 19 August
Clear. High 88°, low 55°.
0Altamont, Thursday, 20 August
Overcast. High 83°, low 53°.
0
Altamont, Friday, 21 August
Partly cloudy. High 90°, low 54°.
0Altamont, Saturday, 22 August
Overcast. High 85°, low 55°.
0Altamont, Sunday, 23 August
Clear. High 87°, low 55°.
0
Altamont, Monday, 24 August
Climate normal for this date — 60-year average.
0Altamont, Tuesday, 25 August
Climate normal for this date — 60-year average.
0Altamont, Wednesday, 26 August
Climate normal for this date — 60-year average.
0Altamont, Thursday, 27 August
Climate normal for this date — 60-year average.
0Altamont, Friday, 28 August
Climate normal for this date — 60-year average.
0Altamont, Saturday, 29 August
Climate normal for this date — 60-year average.
0Altamont, Sunday, 30 August
Climate normal for this date — 60-year average.
0Altamont, Monday, 31 August
Climate normal for this date — 60-year average.
0Altamont, Tuesday, 1 September
Climate normal for this date — 60-year average.
0Altamont, Wednesday, 2 September
Climate normal for this date — 60-year average.
0Altamont, Thursday, 3 September
Climate normal for this date — 60-year average.
0Altamont, Friday, 4 September
Climate normal for this date — 60-year average.
0.01Altamont, Saturday, 5 September
Climate normal for this date — 60-year average.
0Altamont, 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 Altamont, CA 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 Altamont, CA 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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