Weather in Ontario, WI
Ontario, Sunday, 18 October, 18:32
Clear. Feels like 58°. High 65°, low 42°.
Monthly outlook for Ontario, WI: average high 59.3°, average low 44.6°. That is 3.2° above the climate normal for October. Precipitation is expected on 6 days (about 1.0 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 24 October (69.7°), the coolest 2 November (31.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 62.3° | 54.8° | +4.1° |
| 28 October – 6 November | 54.3° | 50.2° | +2.3° |
| 7 November – 16 November | at normal | 44.3° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Norwalk (8 mi).
0
Ontario, Monday, 19 October
Overcast. High 64°, low 40°.
0
Ontario, Tuesday, 20 October
Clear. High 64°, low 38°.
0Ontario, Wednesday, 21 October
Clear. High 68°, low 45°.
0
Ontario, Thursday, 22 October
Partly cloudy. High 68°, low 49°.
0Ontario, Friday, 23 October
Overcast. High 65°, low 50°.
0Ontario, Saturday, 24 October
Overcast. High 70°, low 54°.
0Ontario, Sunday, 25 October
Overcast. High 59°, low 45°.
0.1
Ontario, Monday, 26 October
Light rain. High 48°, low 44°.
0.01Ontario, Tuesday, 27 October
Light rain. High 53°, low 44°.
0.36Ontario, Wednesday, 28 October
Rain. High 52°, low 48°.
0.17Ontario, Thursday, 29 October
Light rain. High 59°, low 52°.
0.11Ontario, Friday, 30 October
Light rain. High 60°, low 44°.
0Ontario, Saturday, 31 October
Clear. High 59°, low 40°.
0.19Ontario, Sunday, 1 November
Light rain. High 49°, low 47°.
0.06Ontario, Monday, 2 November
Light rain. High 47°, low 32°.
0.06Ontario, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.09Ontario, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.09
Ontario, Thursday, 5 November
Climate normal for this date — 60-year average.
0.06Ontario, Friday, 6 November
Climate normal for this date — 60-year average.
0.02
Ontario, Saturday, 7 November
Climate normal for this date — 60-year average.
0.03Ontario, Sunday, 8 November
Climate normal for this date — 60-year average.
0.09Ontario, Monday, 9 November
Climate normal for this date — 60-year average.
0.12Ontario, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.07Ontario, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Ontario, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06Ontario, Friday, 13 November
Climate normal for this date — 60-year average.
0.03Ontario, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Ontario, Sunday, 15 November
Climate normal for this date — 60-year average.
0.07Ontario, Monday, 16 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 Ontario, WI 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 Ontario, WI 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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