Monthly outlook for Menomonee Falls, WI: average high 78.8°, average low 63.2°. That is 1° above the climate normal for August. Precipitation is expected on 4 days (about 2.5 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 20 August (95.1°), the coolest 14 August (54.5°).
78.8°/63.2°
Average high / low
+1°
Above normal
4 / 5
Wet days / normal
2.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
76.3°
77.3°
-0.6°
19 August – 28 August
83°
77°
+3.3°
29 August – 7 September
at normal
75.3°
—
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 (9 mi).
Mon, 1084° / 70°0.07
84 °
Menomonee Falls, Monday, 10 August
Rain. High 84°, low 70°.
Pressure29.91 inHg
Wind1.2 mph SE
Humidity66%
Visibility6.2 mi
Dew point70°
Tue, 1180° / 64°1.22
80 °
Menomonee Falls, Tuesday, 11 August
Heavy rain. High 80°, low 64°.
Pressure29.85 inHg
Wind5.2 mph SE
Humidity90%
Visibility6.2 mi
Dew point67°
Wed, 1281° / 65°0
81 °
Menomonee Falls, Wednesday, 12 August
Overcast. High 81°, low 65°.
Pressure29.83 inHg
Wind9 mph NW
Humidity59%
Visibility6.2 mi
Dew point64°
Thu, 1372° / 58°0
72 °
Menomonee Falls, Thursday, 13 August
Overcast. High 72°, low 58°.
Pressure30.03 inHg
Wind6 mph NE
Humidity51%
Visibility—
Dew point51°
Fri, 1470° / 55°0
70 °
Menomonee Falls, Friday, 14 August
Partly cloudy. High 70°, low 55°.
Pressure30.21 inHg
Wind9.4 mph E
Humidity61%
Visibility—
Dew point54°
Sat, 1574° / 56°0
74 °
Menomonee Falls, Saturday, 15 August
Overcast. High 74°, low 56°.
Pressure30.24 inHg
Wind9.3 mph E
Humidity56%
Visibility—
Dew point55°
Sun, 1670° / 62°0.01
70 °
Menomonee Falls, Sunday, 16 August
Light rain. High 70°, low 62°.
Pressure30.12 inHg
Wind4.2 mph S
Humidity83%
Visibility—
Dew point60°
Mon, 1777° / 62°0.02
77 °
Menomonee Falls, Monday, 17 August
Light rain. High 77°, low 62°.
Pressure30.09 inHg
Wind8.3 mph E
Humidity63%
Visibility—
Dew point62°
Tue, 1877° / 58°0
77 °
Menomonee Falls, Tuesday, 18 August
Overcast. High 77°, low 58°.
Pressure30.03 inHg
Wind6.6 mph S
Humidity53%
Visibility—
Dew point56°
Wed, 1986° / 64°0.34
86 °
Menomonee Falls, Wednesday, 19 August
Rain. High 86°, low 64°.
Pressure29.88 inHg
Wind12.7 mph S
Humidity64%
Visibility—
Dew point67°
Thu, 2095° / 73°0
95 °
Menomonee Falls, Thursday, 20 August
Overcast. High 95°, low 73°.
Pressure29.77 inHg
Wind8 mph NW
Humidity56%
Visibility—
Dew point72°
Fri, 2183° / 66°0.01
83 °
Menomonee Falls, Friday, 21 August
Light rain. High 83°, low 66°.
Pressure29.94 inHg
Wind9.4 mph NE
Humidity53%
Visibility—
Dew point62°
Sat, 2286° / 65°0.03
86 °
Menomonee Falls, Saturday, 22 August
Light rain. High 86°, low 65°.
Pressure29.88 inHg
Wind11.1 mph E
Humidity65%
Visibility—
Dew point64°
Sun, 2377° / 65°0.01
77 °
Menomonee Falls, Sunday, 23 August
Light rain. High 77°, low 65°.
Pressure29.85 inHg
Wind12.8 mph NE
Humidity71%
Visibility—
Dew point65°
Mon, 2472° / 65°0.01
72 °
Menomonee Falls, Monday, 24 August
Light rain. High 72°, low 65°.
Pressure30.09 inHg
Wind12.1 mph E
Humidity80%
Visibility—
Dew point64°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2577° / 66°0.09
77 °
Menomonee Falls, 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°0.15
78 °
Menomonee Falls, 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°0.13
78 °
Menomonee Falls, 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°0.11
77 °
Menomonee Falls, 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°0.1
77 °
Menomonee Falls, 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°0.07
76 °
Menomonee Falls, 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°0.04
75 °
Menomonee Falls, 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°0.07
75 °
Menomonee Falls, 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°0.06
76 °
Menomonee Falls, 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°0.09
76 °
Menomonee Falls, 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°0.07
75 °
Menomonee Falls, 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°0.08
74 °
Menomonee Falls, 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°0.08
75 °
Menomonee Falls, 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°0.1
74 °
Menomonee Falls, 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 Menomonee Falls, 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 Menomonee Falls, 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.