As of 11:01 CDT

Weather in Ontario, WI

67°Current weather

Ontario, Saturday, 24 October, 11:01

Mostly clear. Feels like 66°. High 70°, low 54°.

Pressure30.30 inHg
Wind11.3 mph S
Humidity55%
Visibility6.2 mi
Dew point50°

Monthly outlook for Ontario, WI: average high 59.7°, average low 46.8°. That is 5° above the climate normal for October. Precipitation is expected on 8 days (about 3.6 inches), against a normal of 4 days and 1.2 inches. The warmest day looks like 24 October (70.3°), the coolest 4 November (30.6°).

59.7°/46.8°
Average high / low
+5°
Above normal
8 / 4
Wet days / normal
3.6 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
24 October – 2 November62.3°52.3°+5.6°
3 November – 12 November55.3°46.4°+5°
13 November – 22 Novemberat normal42°—

October records over 66 years

87.3°3 October 2025All-time high
21.6°30 October 1988All-time low

Climate normals and records are computed from the nearest reference point — Norwalk (8 mi).

Sun, 2569° / 52°0Overcast
69 °Overcast

Ontario, Sunday, 25 October

Overcast. High 69°, low 52°.

Pressure30.36 inHg
Wind3.6 mph NW
Humidity73%
Visibility6.2 mi
Dew point55°
Mon, 2659° / 51°0Overcast
59 °Overcast

Ontario, Monday, 26 October

Overcast. High 59°, low 51°.

Pressure30.39 inHg
Wind8.7 mph E
Humidity41%
Visibility6.2 mi
Dew point33°
Tue, 2766° / 47°0Overcast
66 °Overcast

Ontario, Tuesday, 27 October

Overcast. High 66°, low 47°.

Pressure30.21 inHg
Wind10.6 mph SE
Humidity68%
Visibility6.2 mi
Dew point49°
Wed, 2866° / 54°0.56Rain
66 °Rain

Ontario, Wednesday, 28 October

Rain. High 66°, low 54°.

Pressure30.09 inHg
Wind12.3 mph S
Humidity66%
Visibility—
Dew point52°
Thu, 2965° / 50°0.18Light rain
65 °Light rain

Ontario, Thursday, 29 October

Light rain. High 65°, low 50°.

Pressure30.12 inHg
Wind8.6 mph SW
Humidity51%
Visibility—
Dew point45°
Fri, 3056° / 41°0Overcast
56 °Overcast

Ontario, Friday, 30 October

Overcast. High 56°, low 41°.

Pressure30.33 inHg
Wind13.9 mph SE
Humidity57%
Visibility—
Dew point38°
Sat, 3156° / 47°0.18Light rain
56 °Light rain

Ontario, Saturday, 31 October

Light rain. High 56°, low 47°.

Pressure30.15 inHg
Wind13 mph SE
Humidity90%
Visibility—
Dew point49°
Sun, 0159° / 55°0.56Light rain
59 °Light rain

Ontario, Sunday, 1 November

Light rain. High 59°, low 55°.

Pressure29.74 inHg
Wind15.3 mph S
Humidity91%
Visibility—
Dew point55°
Mon, 0257° / 44°1.35Heavy rain
57 °Heavy rain

Ontario, Monday, 2 November

Heavy rain. High 57°, low 44°.

Pressure29.97 inHg
Wind20.5 mph N
Humidity74%
Visibility—
Dew point47°
Tue, 0350° / 36°0Clear
50 °Clear

Ontario, Tuesday, 3 November

Clear. High 50°, low 36°.

Pressure30.12 inHg
Wind11 mph NW
Humidity44%
Visibility—
Dew point26°
Wed, 0448° / 31°0Partly cloudy
48 °Partly cloudy

Ontario, Wednesday, 4 November

Partly cloudy. High 48°, low 31°.

Pressure30.18 inHg
Wind5.9 mph SE
Humidity41%
Visibility—
Dew point23°
Thu, 0556° / 36°0.08Light rain
56 °Light rain

Ontario, Thursday, 5 November

Light rain. High 56°, low 36°.

Pressure30.00 inHg
Wind17.5 mph S
Humidity62%
Visibility—
Dew point38°
Fri, 0663° / 53°0.37Rain
63 °Rain

Ontario, Friday, 6 November

Rain. High 63°, low 53°.

Pressure29.94 inHg
Wind12.3 mph SW
Humidity77%
Visibility—
Dew point54°
Sat, 0761° / 54°0.29Light rain
61 °Light rain

Ontario, Saturday, 7 November

Light rain. High 61°, low 54°.

Pressure29.80 inHg
Wind13.7 mph S
Humidity89%
Visibility—
Dew point55°
Sun, 0855° / 43°0.01Light rain
55 °Light rain

Ontario, Sunday, 8 November

Light rain. High 55°, low 43°.

Pressure30.00 inHg
Wind17.2 mph NW
Humidity48%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0947° / 34°0.09Climate normal
47 °Climate normal

Ontario, Monday, 9 November

Climate normal for this date — 60-year average.

Average high47°
Average low34°
Average precipitation0.09 in
Chance of precipitation37%
Record high70° (1999)
Record low16° (2017)
Tue, 1045° / 33°0.12Climate normal
45 °Climate normal

Ontario, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high45°
Average low33°
Average precipitation0.12 in
Chance of precipitation33%
Record high67° (2022)
Record low11° (2017)
Wed, 1143° / 31°0.07Climate normal
43 °Climate normal

Ontario, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high43°
Average low31°
Average precipitation0.07 in
Chance of precipitation27%
Record high67° (1964)
Record low11° (2019)
Thu, 1242° / 30°0.06Climate normal
42 °Climate normal

Ontario, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high42°
Average low30°
Average precipitation0.06 in
Chance of precipitation30%
Record high62° (1964)
Record low4° (2019)
Fri, 1342° / 30°0.06Climate normal
42 °Climate normal

Ontario, Friday, 13 November

Climate normal for this date — 60-year average.

Average high42°
Average low30°
Average precipitation0.06 in
Chance of precipitation22%
Record high67° (1999)
Record low4° (1986)
Sat, 1443° / 31°0.03Climate normal
43 °Climate normal

Ontario, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high43°
Average low31°
Average precipitation0.03 in
Chance of precipitation20%
Record high63° (2025)
Record low15° (2018)
Sun, 1544° / 32°0.06Climate normal
44 °Climate normal

Ontario, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high44°
Average low32°
Average precipitation0.06 in
Chance of precipitation25%
Record high66° (2001)
Record low16° (2014)
Mon, 1644° / 31°0.07Climate normal
44 °Climate normal

Ontario, Monday, 16 November

Climate normal for this date — 60-year average.

Average high44°
Average low31°
Average precipitation0.07 in
Chance of precipitation27%
Record high61° (2023)
Record low16° (2014)
Tue, 1743° / 32°0.09Climate normal
43 °Climate normal

Ontario, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high43°
Average low32°
Average precipitation0.09 in
Chance of precipitation30%
Record high67° (2016)
Record low8° (2005)
Wed, 1843° / 31°0.07Climate normal
43 °Climate normal

Ontario, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high43°
Average low31°
Average precipitation0.07 in
Chance of precipitation32%
Record high63° (1999)
Record low7° (2014)
Thu, 1942° / 30°0.07Climate normal
42 °Climate normal

Ontario, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high42°
Average low30°
Average precipitation0.07 in
Chance of precipitation28%
Record high62° (1975)
Record low12° (2022)
Fri, 2040° / 29°0.1Climate normal
40 °Climate normal

Ontario, Friday, 20 November

Climate normal for this date — 60-year average.

Average high40°
Average low29°
Average precipitation0.1 in
Chance of precipitation33%
Record high61° (2003)
Record low8° (2022)
Sat, 2140° / 28°0.07Climate normal
40 °Climate normal

Ontario, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high40°
Average low28°
Average precipitation0.07 in
Chance of precipitation23%
Record high65° (1990)
Record low1° (2014)
Sun, 2240° / 28°0.03Climate normal
40 °Climate normal

Ontario, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high40°
Average low28°
Average precipitation0.03 in
Chance of precipitation18%
Record high62° (2012)
Record low9° (1964)

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.