Weather in Fontana, CA
Fontana, Wednesday, 28 October, 01:32
Overcast. Feels like 58°. High 76°, low 53°.
Monthly outlook for Fontana, CA: average high 73.9°, average low 61°. That is 0.6° above the climate normal for October. Precipitation is expected on 2 days (about 1.3 inches), against a normal of 2 days and 0.7 inches. The warmest day looks like 11 November (86°), the coolest 2 November (50.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 28 October – 6 November | 70.7° | 74.2° | -1.9° |
| 7 November – 16 November | 79.3° | 70.3° | +5° |
| 17 November – 26 November | at normal | 67.4° | — |
October records over 66 years
0
Fontana, Thursday, 29 October
Clear. High 75°, low 55°.
0.03
Fontana, Friday, 30 October
Light rain. High 65°, low 56°.
0.3Fontana, Saturday, 31 October
Rain. High 64°, low 54°.
0.98Fontana, Sunday, 1 November
Rain. High 64°, low 57°.
0Fontana, Monday, 2 November
Clear. High 71°, low 51°.
0Fontana, Tuesday, 3 November
Clear. High 79°, low 65°.
0Fontana, Wednesday, 4 November
Overcast. High 72°, low 63°.
0Fontana, Thursday, 5 November
Clear. High 72°, low 61°.
0Fontana, Friday, 6 November
Overcast. High 70°, low 62°.
0.02Fontana, Saturday, 7 November
Light rain. High 69°, low 62°.
0
Fontana, Sunday, 8 November
Mostly clear. High 74°, low 63°.
0Fontana, Monday, 9 November
Clear. High 80°, low 65°.
0Fontana, Tuesday, 10 November
Clear. High 83°, low 67°.
0
Fontana, Wednesday, 11 November
Partly cloudy. High 86°, low 70°.
0Fontana, Thursday, 12 November
Clear. High 83°, low 71°.
0.04Fontana, Friday, 13 November
Climate normal for this date — 60-year average.
0.05Fontana, Saturday, 14 November
Climate normal for this date — 60-year average.
0.07Fontana, Sunday, 15 November
Climate normal for this date — 60-year average.
0.06Fontana, Monday, 16 November
Climate normal for this date — 60-year average.
0.04Fontana, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.08Fontana, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.06Fontana, Thursday, 19 November
Climate normal for this date — 60-year average.
0.08Fontana, Friday, 20 November
Climate normal for this date — 60-year average.
0.11Fontana, Saturday, 21 November
Climate normal for this date — 60-year average.
0.06Fontana, Sunday, 22 November
Climate normal for this date — 60-year average.
0.01Fontana, Monday, 23 November
Climate normal for this date — 60-year average.
0.04Fontana, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.07Fontana, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.08Fontana, 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 Fontana, 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 Fontana, 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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