EN
English Español

As of 16:46 CDT

Weather in Ontario, WI

81°Current weather

Ontario, Saturday, 8 August, 16:46

Clear. Feels like 81°. High 81°, low 61°.

Pressure29.97 inHg
Wind7.7 mph W
Humidity42%
Visibility6.2 mi
Dew point56°
Sun, 0979° / 66°0.69Heavy rain
79 °Heavy rain

Ontario, Sunday, 9 August

Heavy rain. High 79°, low 66°.

Pressure29.85 inHg
Wind0.3 mph S
Humidity74%
Visibility6.2 mi
Dew point69°
Mon, 1087° / 70°0.02Light rain
87 °Light rain

Ontario, Monday, 10 August

Light rain. High 87°, low 70°.

Pressure29.85 inHg
Wind8.8 mph E
Humidity70%
Visibility6.2 mi
Dew point70°
Tue, 1185° / 70°0.5Rain
85 °Rain

Ontario, Tuesday, 11 August

Rain. High 85°, low 70°.

Pressure29.83 inHg
Wind8.2 mph SE
Humidity77%
Visibility6.2 mi
Dew point71°
Wed, 1284° / 62°0.06Light rain
84 °Light rain

Ontario, Wednesday, 12 August

Light rain. High 84°, low 62°.

Pressure29.88 inHg
Wind5 mph N
Humidity51%
Visibility6.2 mi
Dew point62°
Thu, 1375° / 60°0.14Light rain
75 °Light rain

Ontario, Thursday, 13 August

Light rain. High 75°, low 60°.

Pressure29.97 inHg
Wind8.1 mph NE
Humidity46%
Visibility—
Dew point51°
Fri, 1475° / 53°0Clear
75 °Clear

Ontario, Friday, 14 August

Clear. High 75°, low 53°.

Pressure30.21 inHg
Wind6.2 mph E
Humidity44%
Visibility—
Dew point48°
Sat, 1576° / 56°0Overcast
76 °Overcast

Ontario, Saturday, 15 August

Overcast. High 76°, low 56°.

Pressure30.27 inHg
Wind9.4 mph S
Humidity53%
Visibility—
Dew point54°
Sun, 1678° / 57°0Overcast
78 °Overcast

Ontario, Sunday, 16 August

Overcast. High 78°, low 57°.

Pressure30.12 inHg
Wind12.3 mph S
Humidity58%
Visibility—
Dew point59°
Mon, 1782° / 66°0.15Light rain
82 °Light rain

Ontario, Monday, 17 August

Light rain. High 82°, low 66°.

Pressure29.97 inHg
Wind4.7 mph S
Humidity76%
Visibility—
Dew point70°
Tue, 1885° / 65°0Light rain
85 °Light rain

Ontario, Tuesday, 18 August

Light rain. High 85°, low 65°.

Pressure30.03 inHg
Wind7.4 mph S
Humidity56%
Visibility—
Dew point64°
Wed, 1972° / 67°0.33Rain
72 °Rain

Ontario, Wednesday, 19 August

Rain. High 72°, low 67°.

Pressure29.91 inHg
Wind9.1 mph NW
Humidity97%
Visibility—
Dew point70°
Thu, 2082° / 60°0Clear
82 °Clear

Ontario, Thursday, 20 August

Clear. High 82°, low 60°.

Pressure29.94 inHg
Wind7.1 mph N
Humidity49%
Visibility—
Dew point56°
Fri, 2180° / 59°0.09Light rain
80 °Light rain

Ontario, Friday, 21 August

Light rain. High 80°, low 59°.

Pressure29.97 inHg
Wind7.3 mph S
Humidity58%
Visibility—
Dew point61°
Sat, 2271° / 53°0.07Light rain
71 °Light rain

Ontario, Saturday, 22 August

Light rain. High 71°, low 53°.

Pressure30.03 inHg
Wind14.1 mph NE
Humidity45%
Visibility—
Dew point46°
Sun, 2369° / 42°0Overcast
69 °Overcast

Ontario, Sunday, 23 August

Overcast. High 69°, low 42°.

Pressure30.27 inHg
Wind7.1 mph E
Humidity42%
Visibility—
Dew point40°

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.