As of 08:15 CDT

Weather in Lake Wisconsin, WI

68°Current weather

Lake Wisconsin, Sunday, 9 August, 08:15

Light rain. Feels like 68°. High 82°, low 62°.

Pressure29.94 inHg
Wind3 mph SW
Humidity91%
Visibility6.2 mi
Dew point65°

Monthly outlook for Lake Wisconsin, WI: average high 77.6°, average low 60.9°. That is 0.7° below the climate normal for August. Precipitation is expected on 6 days (about 1.1 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 12 August (84.4°), the coolest 23 August (54.5°).

77.6°/60.9°
Average high / low
−0.7°
Below normal
6 / 5
Wet days / normal
1.1 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
9 August – 18 August77.4°78.9°-0.8°
19 August – 28 August77.7°78.9°-0.7°
29 August – 7 Septemberat normal76.9°

August records over 66 years

97.5°23 August 2023All-time high
44.8°29 August 1965All-time low

Climate normals and records are computed from the nearest reference point — Sauk City (11 mi).

Mon, 1084° / 72°0.02Light rain
84 °Light rain

Lake Wisconsin, Monday, 10 August

Light rain. High 84°, low 72°.

Pressure29.91 inHg
Wind3.3 mph NE
Humidity81%
Visibility6.2 mi
Dew point70°
Tue, 1179° / 64°0.04Light rain
79 °Light rain

Lake Wisconsin, Tuesday, 11 August

Light rain. High 79°, low 64°.

Pressure29.88 inHg
Wind4.7 mph E
Humidity95%
Visibility6.2 mi
Dew point67°
Wed, 1284° / 64°0Clear
84 °Clear

Lake Wisconsin, Wednesday, 12 August

Clear. High 84°, low 64°.

Pressure29.88 inHg
Wind6.8 mph N
Humidity61%
Visibility6.2 mi
Dew point65°
Thu, 1372° / 60°0.02Light rain
72 °Light rain

Lake Wisconsin, Thursday, 13 August

Light rain. High 72°, low 60°.

Pressure30.00 inHg
Wind9.2 mph E
Humidity75%
Visibility
Dew point61°
Fri, 1475° / 55°0Mostly clear
75 °Mostly clear

Lake Wisconsin, Friday, 14 August

Mostly clear. High 75°, low 55°.

Pressure30.18 inHg
Wind10.3 mph E
Humidity59%
Visibility
Dew point56°
Sat, 1573° / 61°0.03Light rain
73 °Light rain

Lake Wisconsin, Saturday, 15 August

Light rain. High 73°, low 61°.

Pressure30.21 inHg
Wind11.6 mph SE
Humidity72%
Visibility
Dew point60°
Sun, 1670° / 64°0.02Light rain
70 °Light rain

Lake Wisconsin, Sunday, 16 August

Light rain. High 70°, low 64°.

Pressure30.03 inHg
Wind12.7 mph NW
Humidity79%
Visibility
Dew point62°
Mon, 1777° / 58°0Overcast
77 °Overcast

Lake Wisconsin, Monday, 17 August

Overcast. High 77°, low 58°.

Pressure30.09 inHg
Wind5.2 mph W
Humidity59%
Visibility
Dew point57°
Tue, 1879° / 60°0Overcast
79 °Overcast

Lake Wisconsin, Tuesday, 18 August

Overcast. High 79°, low 60°.

Pressure29.85 inHg
Wind11 mph SW
Humidity73%
Visibility
Dew point59°
Wed, 1977° / 61°0.11Light rain
77 °Light rain

Lake Wisconsin, Wednesday, 19 August

Light rain. High 77°, low 61°.

Pressure29.88 inHg
Wind12.6 mph N
Humidity76%
Visibility
Dew point60°
Thu, 2075° / 58°0.11Light rain
75 °Light rain

Lake Wisconsin, Thursday, 20 August

Light rain. High 75°, low 58°.

Pressure29.91 inHg
Wind5.5 mph N
Humidity66%
Visibility
Dew point61°
Fri, 2181° / 62°0.25Rain
81 °Rain

Lake Wisconsin, Friday, 21 August

Rain. High 81°, low 62°.

Pressure29.77 inHg
Wind12.4 mph SW
Humidity86%
Visibility
Dew point65°
Sat, 2277° / 61°0.11Light rain
77 °Light rain

Lake Wisconsin, Saturday, 22 August

Light rain. High 77°, low 61°.

Pressure29.80 inHg
Wind15.7 mph NW
Humidity53%
Visibility
Dew point57°
Sun, 2377° / 54°0Clear
77 °Clear

Lake Wisconsin, Sunday, 23 August

Clear. High 77°, low 54°.

Pressure30.15 inHg
Wind10.8 mph W
Humidity59%
Visibility
Dew point56°
Mon, 2480° / 58°0Partly cloudy
80 °Partly cloudy

Lake Wisconsin, Monday, 24 August

Partly cloudy. High 80°, low 58°.

Pressure30.18 inHg
Wind8.2 mph SW
Humidity60%
Visibility
Dew point60°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2580° / 64°0.09Climate normal
80 °Climate normal

Lake Wisconsin, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high80°
Average low64°
Average precipitation0.09 in
Chance of precipitation27%
Record high90° (2020)
Record low51° (2025)
Wed, 2679° / 64°0.14Climate normal
79 °Climate normal

Lake Wisconsin, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high79°
Average low64°
Average precipitation0.14 in
Chance of precipitation37%
Record high93° (2024)
Record low48° (2025)
Thu, 2779° / 64°0.15Climate normal
79 °Climate normal

Lake Wisconsin, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high79°
Average low64°
Average precipitation0.15 in
Chance of precipitation35%
Record high92° (2024)
Record low48° (1968)
Fri, 2879° / 63°0.15Climate normal
79 °Climate normal

Lake Wisconsin, Friday, 28 August

Climate normal for this date — 60-year average.

Average high79°
Average low63°
Average precipitation0.15 in
Chance of precipitation38%
Record high93° (1984)
Record low45° (1986)
Sat, 2978° / 62°0.11Climate normal
78 °Climate normal

Lake Wisconsin, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high78°
Average low62°
Average precipitation0.11 in
Chance of precipitation30%
Record high92° (1984)
Record low45° (1965)
Sun, 3078° / 62°0.07Climate normal
78 °Climate normal

Lake Wisconsin, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high78°
Average low62°
Average precipitation0.07 in
Chance of precipitation33%
Record high91° (2012)
Record low49° (1974)
Mon, 3178° / 61°0.04Climate normal
78 °Climate normal

Lake Wisconsin, Monday, 31 August

Climate normal for this date — 60-year average.

Average high78°
Average low61°
Average precipitation0.04 in
Chance of precipitation17%
Record high91° (2000)
Record low48° (1967)
Tue, 0178° / 61°0.1Climate normal
78 °Climate normal

Lake Wisconsin, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high78°
Average low61°
Average precipitation0.1 in
Chance of precipitation28%
Record high92° (2011)
Record low48° (1967)
Wed, 0278° / 61°0.09Climate normal
78 °Climate normal

Lake Wisconsin, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high78°
Average low61°
Average precipitation0.09 in
Chance of precipitation28%
Record high91° (2008)
Record low47° (1974)
Thu, 0377° / 62°0.11Climate normal
77 °Climate normal

Lake Wisconsin, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high77°
Average low62°
Average precipitation0.11 in
Chance of precipitation32%
Record high94° (2023)
Record low45° (1974)
Fri, 0476° / 60°0.09Climate normal
76 °Climate normal

Lake Wisconsin, Friday, 4 September

Climate normal for this date — 60-year average.

Average high76°
Average low60°
Average precipitation0.09 in
Chance of precipitation32%
Record high93° (2023)
Record low44° (2025)
Sat, 0576° / 60°0.07Climate normal
76 °Climate normal

Lake Wisconsin, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high76°
Average low60°
Average precipitation0.07 in
Chance of precipitation27%
Record high90° (2023)
Record low46° (1974)
Sun, 0676° / 60°0.07Climate normal
76 °Climate normal

Lake Wisconsin, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high76°
Average low60°
Average precipitation0.07 in
Chance of precipitation23%
Record high90° (1990)
Record low45° (1962)
Mon, 0776° / 60°0.1Climate normal
76 °Climate normal

Lake Wisconsin, Monday, 7 September

Climate normal for this date — 60-year average.

Average high76°
Average low60°
Average precipitation0.1 in
Chance of precipitation28%
Record high90° (1960)
Record low42° (2025)

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 Lake Wisconsin, 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 Lake Wisconsin, 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.