Weather in Rialto, CA
Rialto, Wednesday, 28 October, 19:10
Clear. Feels like 65°. High 73°, low 53°.
Monthly outlook for Rialto, CA: average high 73°, average low 58.5°. That is 0.4° above the climate normal for October. Precipitation is expected on 4 days (about 1.9 inches), against a normal of 2 days and 0.7 inches. The warmest day looks like 9 November (83.9°), the coolest 1 November (49.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 28 October – 6 November | 69.6° | 73.5° | -2.2° |
| 7 November – 16 November | 78.5° | 69.6° | +5° |
| 17 November – 26 November | at normal | 66.5° | — |
October records over 66 years
0
Rialto, Thursday, 29 October
Overcast. High 74°, low 56°.
0.07
Rialto, Friday, 30 October
Light rain. High 66°, low 53°.
0.06Rialto, Saturday, 31 October
Light rain. High 60°, low 52°.
0.05Rialto, Sunday, 1 November
Light rain. High 61°, low 49°.
0
Rialto, Monday, 2 November
Clear. High 70°, low 50°.
0Rialto, Tuesday, 3 November
Clear. High 79°, low 55°.
0Rialto, Wednesday, 4 November
Clear. High 72°, low 62°.
0
Rialto, Thursday, 5 November
Partly cloudy. High 69°, low 59°.
0Rialto, Friday, 6 November
Overcast. High 72°, low 61°.
0
Rialto, Saturday, 7 November
Mostly clear. High 78°, low 62°.
0Rialto, Sunday, 8 November
Clear. High 82°, low 65°.
0Rialto, Monday, 9 November
Mostly clear. High 84°, low 68°.
0Rialto, Tuesday, 10 November
Overcast. High 81°, low 68°.
0Rialto, Wednesday, 11 November
Overcast. High 76°, low 64°.
1.67Rialto, Thursday, 12 November
Heavy rain. High 71°, low 59°.
0.04Rialto, Friday, 13 November
Climate normal for this date — 60-year average.
0.05Rialto, Saturday, 14 November
Climate normal for this date — 60-year average.
0.08Rialto, Sunday, 15 November
Climate normal for this date — 60-year average.
0.06Rialto, Monday, 16 November
Climate normal for this date — 60-year average.
0.04Rialto, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.07Rialto, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.06Rialto, Thursday, 19 November
Climate normal for this date — 60-year average.
0.08Rialto, Friday, 20 November
Climate normal for this date — 60-year average.
0.11Rialto, Saturday, 21 November
Climate normal for this date — 60-year average.
0.06Rialto, Sunday, 22 November
Climate normal for this date — 60-year average.
0.01Rialto, Monday, 23 November
Climate normal for this date — 60-year average.
0.04Rialto, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.07Rialto, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.08Rialto, Thursday, 26 November
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 Rialto, 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 Rialto, 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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