As of 02:00 CDT

Weather in Mequon, WI

62°Current weather

Mequon, Sunday, 9 August, 02:00

Clear. Feels like 62°. High 76°, low 62°.

Pressure30.00 inHg
Wind5.8 mph W
Humidity90%
Visibility6.2 mi
Dew point59°

Monthly outlook for Mequon, WI: average high 77.9°, average low 64.4°. That is 0.4° above the climate normal for August. Precipitation is expected on 3 days (about 2.0 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 20 August (93.7°), the coolest 14 August (56.8°).

77.9°/64.4°
Average high / low
+0.4°
Above normal
3 / 5
Wet days / normal
2.0 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
9 August – 18 August75.9°77.3°-0.8°
19 August – 28 August81.2°77°+2.3°
29 August – 7 Septemberat normal75.3°

August records over 66 years

96.8°23 August 2023All-time high
49.6°28 August 1986All-time low

Climate normals and records are computed from the nearest reference point — Thiensville (0 mi).

Mon, 1086° / 69°0.01Light rain
86 °Light rain

Mequon, Monday, 10 August

Light rain. High 86°, low 69°.

Pressure29.91 inHg
Wind1.5 mph E
Humidity68%
Visibility6.2 mi
Dew point68°
Tue, 1179° / 66°1.1Heavy rain
79 °Heavy rain

Mequon, Tuesday, 11 August

Heavy rain. High 79°, low 66°.

Pressure29.85 inHg
Wind5.7 mph SE
Humidity92%
Visibility6.2 mi
Dew point67°
Wed, 1281° / 67°0Partly cloudy
81 °Partly cloudy

Mequon, Wednesday, 12 August

Partly cloudy. High 81°, low 67°.

Pressure29.83 inHg
Wind7.6 mph NW
Humidity60%
Visibility6.2 mi
Dew point64°
Thu, 1372° / 60°0Overcast
72 °Overcast

Mequon, Thursday, 13 August

Overcast. High 72°, low 60°.

Pressure30.03 inHg
Wind7.9 mph NE
Humidity49%
Visibility
Dew point50°
Fri, 1470° / 57°0Partly cloudy
70 °Partly cloudy

Mequon, Friday, 14 August

Partly cloudy. High 70°, low 57°.

Pressure30.21 inHg
Wind9.6 mph E
Humidity63%
Visibility
Dew point55°
Sat, 1573° / 60°0Overcast
73 °Overcast

Mequon, Saturday, 15 August

Overcast. High 73°, low 60°.

Pressure30.24 inHg
Wind9.2 mph SE
Humidity55%
Visibility
Dew point54°
Sun, 1670° / 63°0.03Light rain
70 °Light rain

Mequon, Sunday, 16 August

Light rain. High 70°, low 63°.

Pressure30.09 inHg
Wind4.5 mph S
Humidity80%
Visibility
Dew point60°
Mon, 1777° / 63°0.01Light rain
77 °Light rain

Mequon, Monday, 17 August

Light rain. High 77°, low 63°.

Pressure30.09 inHg
Wind8.3 mph E
Humidity60%
Visibility
Dew point60°
Tue, 1877° / 61°0Overcast
77 °Overcast

Mequon, Tuesday, 18 August

Overcast. High 77°, low 61°.

Pressure30.03 inHg
Wind7 mph SE
Humidity49%
Visibility
Dew point55°
Wed, 1984° / 65°0.28Rain
84 °Rain

Mequon, Wednesday, 19 August

Rain. High 84°, low 65°.

Pressure29.88 inHg
Wind11.4 mph S
Humidity64%
Visibility
Dew point67°
Thu, 2094° / 73°0Overcast
94 °Overcast

Mequon, Thursday, 20 August

Overcast. High 94°, low 73°.

Pressure29.77 inHg
Wind8.8 mph NW
Humidity59%
Visibility
Dew point72°
Fri, 2181° / 68°0Light rain
81 °Light rain

Mequon, Friday, 21 August

Light rain. High 81°, low 68°.

Pressure29.97 inHg
Wind11.2 mph N
Humidity57%
Visibility
Dew point63°
Sat, 2281° / 66°0.02Light rain
81 °Light rain

Mequon, Saturday, 22 August

Light rain. High 81°, low 66°.

Pressure29.91 inHg
Wind10.9 mph E
Humidity69%
Visibility
Dew point64°
Sun, 2376° / 66°0.01Light rain
76 °Light rain

Mequon, Sunday, 23 August

Light rain. High 76°, low 66°.

Pressure29.88 inHg
Wind13.5 mph N
Humidity75%
Visibility
Dew point64°
Mon, 2472° / 66°0.02Light rain
72 °Light rain

Mequon, Monday, 24 August

Light rain. High 72°, low 66°.

Pressure30.12 inHg
Wind13 mph E
Humidity80%
Visibility
Dew point64°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2577° / 66°0.09Climate normal
77 °Climate normal

Mequon, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high77°
Average low66°
Average precipitation0.09 in
Chance of precipitation27%
Record high89° (2021)
Record low52° (2025)
Wed, 2678° / 66°0.15Climate normal
78 °Climate normal

Mequon, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high78°
Average low66°
Average precipitation0.15 in
Chance of precipitation35%
Record high92° (2020)
Record low51° (2025)
Thu, 2778° / 66°0.13Climate normal
78 °Climate normal

Mequon, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high78°
Average low66°
Average precipitation0.13 in
Chance of precipitation42%
Record high91° (1973)
Record low53° (2025)
Fri, 2877° / 65°0.11Climate normal
77 °Climate normal

Mequon, Friday, 28 August

Climate normal for this date — 60-year average.

Average high77°
Average low65°
Average precipitation0.11 in
Chance of precipitation37%
Record high91° (2021)
Record low50° (1986)
Sat, 2977° / 65°0.1Climate normal
77 °Climate normal

Mequon, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high77°
Average low65°
Average precipitation0.1 in
Chance of precipitation33%
Record high88° (1983)
Record low51° (1965)
Sun, 3076° / 65°0.07Climate normal
76 °Climate normal

Mequon, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high76°
Average low65°
Average precipitation0.07 in
Chance of precipitation35%
Record high88° (2013)
Record low53° (2023)
Mon, 3175° / 64°0.04Climate normal
75 °Climate normal

Mequon, Monday, 31 August

Climate normal for this date — 60-year average.

Average high75°
Average low64°
Average precipitation0.04 in
Chance of precipitation18%
Record high87° (1960)
Record low52° (2009)
Tue, 0175° / 64°0.07Climate normal
75 °Climate normal

Mequon, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high75°
Average low64°
Average precipitation0.07 in
Chance of precipitation30%
Record high86° (1960)
Record low54° (1994)
Wed, 0276° / 64°0.06Climate normal
76 °Climate normal

Mequon, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high76°
Average low64°
Average precipitation0.06 in
Chance of precipitation27%
Record high89° (2011)
Record low52° (2017)
Thu, 0376° / 64°0.09Climate normal
76 °Climate normal

Mequon, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high76°
Average low64°
Average precipitation0.09 in
Chance of precipitation23%
Record high93° (2023)
Record low50° (1974)
Fri, 0475° / 63°0.07Climate normal
75 °Climate normal

Mequon, Friday, 4 September

Climate normal for this date — 60-year average.

Average high75°
Average low63°
Average precipitation0.07 in
Chance of precipitation27%
Record high89° (2023)
Record low45° (2025)
Sat, 0574° / 62°0.08Climate normal
74 °Climate normal

Mequon, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high74°
Average low62°
Average precipitation0.08 in
Chance of precipitation25%
Record high85° (2023)
Record low48° (2019)
Sun, 0675° / 63°0.08Climate normal
75 °Climate normal

Mequon, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high75°
Average low63°
Average precipitation0.08 in
Chance of precipitation35%
Record high88° (1990)
Record low48° (2025)
Mon, 0774° / 62°0.1Climate normal
74 °Climate normal

Mequon, Monday, 7 September

Climate normal for this date — 60-year average.

Average high74°
Average low62°
Average precipitation0.1 in
Chance of precipitation37%
Record high87° (1960)
Record low46° (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 Mequon, 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 Mequon, 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.