Monthly outlook for Madison, MN: average high 83°, average low 62.6°. That is 1.8° above the climate normal for August. Precipitation is expected on 9 days (about 2.6 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 18 August (97.4°), the coolest 14 August (57.3°).
83°/62.6°
Average high / low
+1.8°
Above normal
9 / 5
Wet days / normal
2.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
83.9°
79.9°
+2.2°
19 August – 28 August
81.4°
79.4°
+1.1°
29 August – 7 September
at normal
77.8°
—
August records over 66 years
99.5°16 August 1988All-time high
43.5°28 August 1965All-time low
Climate normals and records are computed from the nearest reference point — Marietta (11 mi).
Mon, 1086° / 61°0.01
86 °
Madison, Monday, 10 August
Light rain. High 86°, low 61°.
Pressure29.88 inHg
Wind7.3 mph SE
Humidity34%
Visibility6.2 mi
Dew point54°
Tue, 1188° / 62°0.77
88 °
Madison, Tuesday, 11 August
Heavy rain. High 88°, low 62°.
Pressure29.85 inHg
Wind4 mph E
Humidity58%
Visibility6.2 mi
Dew point64°
Wed, 1286° / 61°0
86 °
Madison, Wednesday, 12 August
Clear. High 86°, low 61°.
Pressure29.94 inHg
Wind4.7 mph SE
Humidity33%
Visibility6.2 mi
Dew point49°
Thu, 1371° / 61°0
71 °
Madison, Thursday, 13 August
Overcast. High 71°, low 61°.
Pressure30.06 inHg
Wind8.6 mph NE
Humidity43%
Visibility—
Dew point46°
Fri, 1480° / 57°0
80 °
Madison, Friday, 14 August
Overcast. High 80°, low 57°.
Pressure30.12 inHg
Wind12.8 mph SE
Humidity37%
Visibility—
Dew point48°
Sat, 1572° / 61°0
72 °
Madison, Saturday, 15 August
Overcast. High 72°, low 61°.
Pressure30.15 inHg
Wind10.7 mph S
Humidity77%
Visibility—
Dew point58°
Sun, 1687° / 63°0
87 °
Madison, Sunday, 16 August
Overcast. High 87°, low 63°.
Pressure30.12 inHg
Wind11 mph N
Humidity38%
Visibility—
Dew point52°
Mon, 1788° / 60°0.01
88 °
Madison, Monday, 17 August
Light rain. High 88°, low 60°.
Pressure30.03 inHg
Wind15.3 mph SE
Humidity37%
Visibility—
Dew point48°
Tue, 1897° / 68°0.78
97 °
Madison, Tuesday, 18 August
Rain. High 97°, low 68°.
Pressure29.77 inHg
Wind24.4 mph SW
Humidity52%
Visibility—
Dew point67°
Wed, 1993° / 69°0.42
93 °
Madison, Wednesday, 19 August
Rain. High 93°, low 69°.
Pressure29.77 inHg
Wind15 mph N
Humidity52%
Visibility—
Dew point68°
Thu, 2079° / 65°0.04
79 °
Madison, Thursday, 20 August
Light rain. High 79°, low 65°.
Pressure29.94 inHg
Wind11.8 mph N
Humidity43%
Visibility—
Dew point53°
Fri, 2184° / 61°0.04
84 °
Madison, Friday, 21 August
Light rain. High 84°, low 61°.
Pressure29.97 inHg
Wind9.4 mph E
Humidity44%
Visibility—
Dew point55°
Sat, 2285° / 64°0.25
85 °
Madison, Saturday, 22 August
Light rain. High 85°, low 64°.
Pressure29.77 inHg
Wind12.5 mph N
Humidity64%
Visibility—
Dew point67°
Sun, 2376° / 65°0.14
76 °
Madison, Sunday, 23 August
Light rain. High 76°, low 65°.
Pressure29.97 inHg
Wind10.9 mph NE
Humidity92%
Visibility—
Dew point63°
Mon, 2471° / 61°0.06
71 °
Madison, Monday, 24 August
Light rain. High 71°, low 61°.
Pressure30.06 inHg
Wind7.5 mph E
Humidity94%
Visibility—
Dew point64°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2580° / 63°0.15
80 °
Madison, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.15 in
Chance of precipitation35%
Record high93° (2020)
Record low48° (2025)
Wed, 2680° / 62°0.14
80 °
Madison, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.14 in
Chance of precipitation28%
Record high97° (1976)
Record low48° (1992)
Thu, 2779° / 62°0.08
79 °
Madison, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.08 in
Chance of precipitation25%
Record high93° (2013)
Record low47° (1986)
Fri, 2879° / 62°0.09
79 °
Madison, Friday, 28 August
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.09 in
Chance of precipitation33%
Record high94° (2012)
Record low44° (1965)
Sat, 2980° / 62°0.08
80 °
Madison, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.08 in
Chance of precipitation27%
Record high97° (2012)
Record low48° (1988)
Sun, 3079° / 61°0.07
79 °
Madison, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.07 in
Chance of precipitation22%
Record high91° (2000)
Record low46° (2009)
Mon, 3179° / 61°0.1
79 °
Madison, Monday, 31 August
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.1 in
Chance of precipitation25%
Record high91° (2013)
Record low46° (1992)
Tue, 0178° / 61°0.08
78 °
Madison, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.08 in
Chance of precipitation22%
Record high93° (2022)
Record low46° (1974)
Wed, 0278° / 61°0.15
78 °
Madison, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.15 in
Chance of precipitation28%
Record high96° (1983)
Record low46° (1974)
Thu, 0378° / 60°0.07
78 °
Madison, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.07 in
Chance of precipitation22%
Record high95° (2023)
Record low41° (1974)
Fri, 0478° / 60°0.08
78 °
Madison, Friday, 4 September
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.08 in
Chance of precipitation25%
Record high98° (2023)
Record low44° (2025)
Sat, 0577° / 60°0.11
77 °
Madison, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.11 in
Chance of precipitation28%
Record high94° (1960)
Record low41° (1965)
Sun, 0677° / 59°0.06
77 °
Madison, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high77°
Average low59°
Average precipitation0.06 in
Chance of precipitation20%
Record high97° (1976)
Record low46° (1988)
Mon, 0775° / 58°0.09
75 °
Madison, Monday, 7 September
Climate normal for this date — 60-year average.
Average high75°
Average low58°
Average precipitation0.09 in
Chance of precipitation28%
Record high94° (1978)
Record low43° (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 Madison, MN 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 Madison, MN 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.