Weather in Rowland Heights, CA
Rowland Heights, Sunday, 9 August, 03:23
Clear. Feels like 70°. High 99°, low 70°.
Monthly outlook for Rowland Heights, CA: average high 88.9°, average low 71.8°. That is 0.2° above 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 9 August (98.9°), the coolest 14 August (69.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 88.1° | 88.9° | -0.4° |
| 19 August – 28 August | 90.4° | 89.2° | +0.6° |
| 29 August – 7 September | at normal | 90.4° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — South San Jose Hills (3 mi).
0
Rowland Heights, Monday, 10 August
Partly cloudy. High 96°, low 71°.
0
Rowland Heights, Tuesday, 11 August
Clear. High 91°, low 74°.
0Rowland Heights, Wednesday, 12 August
Partly cloudy. High 87°, low 73°.
0
Rowland Heights, Thursday, 13 August
Mostly clear. High 83°, low 71°.
0
Rowland Heights, Friday, 14 August
Overcast. High 83°, low 69°.
0
Rowland Heights, Saturday, 15 August
Light rain. High 79°, low 71°.
0Rowland Heights, Sunday, 16 August
Overcast. High 87°, low 71°.
0Rowland Heights, Monday, 17 August
Overcast. High 88°, low 72°.
0Rowland Heights, Tuesday, 18 August
Partly cloudy. High 88°, low 73°.
0Rowland Heights, Wednesday, 19 August
Overcast. High 88°, low 72°.
0Rowland Heights, Thursday, 20 August
Clear. High 90°, low 72°.
0Rowland Heights, Friday, 21 August
Partly cloudy. High 91°, low 72°.
0Rowland Heights, Saturday, 22 August
Clear. High 92°, low 74°.
0Rowland Heights, Sunday, 23 August
Clear. High 89°, low 73°.
0Rowland Heights, Monday, 24 August
Clear. High 91°, low 72°.
0Rowland Heights, Tuesday, 25 August
Climate normal for this date — 60-year average.
0Rowland Heights, Wednesday, 26 August
Climate normal for this date — 60-year average.
0Rowland Heights, Thursday, 27 August
Climate normal for this date — 60-year average.
0Rowland Heights, Friday, 28 August
Climate normal for this date — 60-year average.
0Rowland Heights, Saturday, 29 August
Climate normal for this date — 60-year average.
0Rowland Heights, Sunday, 30 August
Climate normal for this date — 60-year average.
0Rowland Heights, Monday, 31 August
Climate normal for this date — 60-year average.
0.03Rowland Heights, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.04Rowland Heights, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.01Rowland Heights, Thursday, 3 September
Climate normal for this date — 60-year average.
0Rowland Heights, Friday, 4 September
Climate normal for this date — 60-year average.
0.01Rowland Heights, Saturday, 5 September
Climate normal for this date — 60-year average.
0.01Rowland Heights, Sunday, 6 September
Climate normal for this date — 60-year average.
0Rowland Heights, 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 Rowland Heights, 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 Rowland Heights, 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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