Weather in Johannesburg, CA
Johannesburg, Sunday, 9 August, 07:03
Mostly clear. Feels like 77°. High 98°, low 67°.
Monthly outlook for Johannesburg, CA: average high 97.6°, average low 72.7°. That is 2.5° above the climate normal for August. Precipitation is expected on 0 days (about 0.1 inches), against a normal of 1 days and 0.2 inches. The warmest day looks like 23 August (105.5°), the coolest 14 August (61.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 94° | 94.1° | -0.1° |
| 19 August – 28 August | 103.7° | 91.9° | +6.5° |
| 29 August – 7 September | at normal | 91.4° | — |
August records over 66 years
0
Johannesburg, Monday, 10 August
Overcast. High 96°, low 69°.
0Johannesburg, Tuesday, 11 August
Overcast. High 99°, low 71°.
0.02
Johannesburg, Wednesday, 12 August
Light rain. High 95°, low 70°.
0
Johannesburg, Thursday, 13 August
Clear. High 91°, low 66°.
0Johannesburg, Friday, 14 August
Overcast. High 89°, low 62°.
0Johannesburg, Saturday, 15 August
Overcast. High 91°, low 67°.
0Johannesburg, Sunday, 16 August
Light rain. High 87°, low 69°.
0Johannesburg, Monday, 17 August
Mostly clear. High 94°, low 69°.
0Johannesburg, Tuesday, 18 August
Mostly clear. High 99°, low 75°.
0Johannesburg, Wednesday, 19 August
Clear. High 102°, low 78°.
0Johannesburg, Thursday, 20 August
Overcast. High 101°, low 78°.
0Johannesburg, Friday, 21 August
Clear. High 104°, low 79°.
0.03Johannesburg, Saturday, 22 August
Light rain. High 104°, low 80°.
0.01Johannesburg, Sunday, 23 August
Light rain. High 106°, low 81°.
0Johannesburg, Monday, 24 August
Mostly clear. High 106°, low 84°.
0Johannesburg, Tuesday, 25 August
Climate normal for this date — 60-year average.
0Johannesburg, Wednesday, 26 August
Climate normal for this date — 60-year average.
0Johannesburg, Thursday, 27 August
Climate normal for this date — 60-year average.
0Johannesburg, Friday, 28 August
Climate normal for this date — 60-year average.
0Johannesburg, Saturday, 29 August
Climate normal for this date — 60-year average.
0Johannesburg, Sunday, 30 August
Climate normal for this date — 60-year average.
0Johannesburg, Monday, 31 August
Climate normal for this date — 60-year average.
0Johannesburg, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.01Johannesburg, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.01Johannesburg, Thursday, 3 September
Climate normal for this date — 60-year average.
0Johannesburg, Friday, 4 September
Climate normal for this date — 60-year average.
0.01Johannesburg, Saturday, 5 September
Climate normal for this date — 60-year average.
0.01Johannesburg, Sunday, 6 September
Climate normal for this date — 60-year average.
0Johannesburg, 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 Johannesburg, 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 Johannesburg, 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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