Monthly outlook for East Waupun, WI: average high 77.3°, average low 61.9°. That is 0.2° below the climate normal for August. Precipitation is expected on 9 days (about 3.2 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 10 August (86.9°), the coolest 22 August (54.1°).
77.3°/61.9°
Average high / low
−0.2°
Below normal
9 / 5
Wet days / normal
3.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
76.7°
77.9°
-0.7°
19 August – 28 August
78.3°
77.8°
+0.3°
29 August – 7 September
at normal
75.9°
—
August records over 66 years
96.3°23 August 2023All-time high
44.1°29 August 1965All-time low
Climate normals and records are computed from the nearest reference point — Fox Lake (12 mi).
Mon, 1087° / 71°0
87 °
East Waupun, Monday, 10 August
Overcast. High 87°, low 71°.
Pressure29.91 inHg
Wind1.7 mph E
Humidity73%
Visibility6.2 mi
Dew point68°
Tue, 1180° / 63°0.56
80 °
East Waupun, Tuesday, 11 August
Heavy rain. High 80°, low 63°.
Pressure29.80 inHg
Wind9.6 mph S
Humidity81%
Visibility6.2 mi
Dew point67°
Wed, 1277° / 62°0
77 °
East Waupun, Wednesday, 12 August
Overcast. High 77°, low 62°.
Pressure29.91 inHg
Wind2.8 mph E
Humidity64%
Visibility6.2 mi
Dew point63°
Thu, 1378° / 62°0
78 °
East Waupun, Thursday, 13 August
Overcast. High 78°, low 62°.
Pressure29.97 inHg
Wind4.9 mph S
Humidity70%
Visibility6.2 mi
Dew point65°
Fri, 1474° / 61°0.38
74 °
East Waupun, Friday, 14 August
Rain. High 74°, low 61°.
Pressure30.06 inHg
Wind12.7 mph E
Humidity68%
Visibility—
Dew point61°
Sat, 1573° / 62°0.88
73 °
East Waupun, Saturday, 15 August
Rain. High 73°, low 62°.
Pressure29.91 inHg
Wind14.2 mph SE
Humidity95%
Visibility—
Dew point70°
Sun, 1671° / 62°0.41
71 °
East Waupun, Sunday, 16 August
Rain. High 71°, low 62°.
Pressure30.00 inHg
Wind14.5 mph NW
Humidity77%
Visibility—
Dew point60°
Mon, 1768° / 61°0.16
68 °
East Waupun, Monday, 17 August
Light rain. High 68°, low 61°.
Pressure30.00 inHg
Wind12.3 mph SE
Humidity88%
Visibility—
Dew point64°
Tue, 1881° / 67°0.19
81 °
East Waupun, Tuesday, 18 August
Light rain. High 81°, low 67°.
Pressure29.83 inHg
Wind14.7 mph W
Humidity75%
Visibility—
Dew point67°
Wed, 1979° / 61°0
79 °
East Waupun, Wednesday, 19 August
Partly cloudy. High 79°, low 61°.
Pressure30.03 inHg
Wind7.6 mph W
Humidity65%
Visibility—
Dew point63°
Thu, 2084° / 66°0.1
84 °
East Waupun, Thursday, 20 August
Light rain. High 84°, low 66°.
Pressure29.80 inHg
Wind13.6 mph SW
Humidity71%
Visibility—
Dew point70°
Fri, 2173° / 58°0.03
73 °
East Waupun, Friday, 21 August
Light rain. High 73°, low 58°.
Pressure29.97 inHg
Wind13 mph NE
Humidity73%
Visibility—
Dew point61°
Sat, 2276° / 54°0
76 °
East Waupun, Saturday, 22 August
Clear. High 76°, low 54°.
Pressure30.03 inHg
Wind8.1 mph SW
Humidity57%
Visibility—
Dew point55°
Sun, 2380° / 61°0.17
80 °
East Waupun, Sunday, 23 August
Light rain. High 80°, low 61°.
Pressure29.94 inHg
Wind11.3 mph W
Humidity68%
Visibility—
Dew point64°
Mon, 2478° / 60°0
78 °
East Waupun, Monday, 24 August
Overcast. High 78°, low 60°.
Pressure30.03 inHg
Wind7.4 mph NW
Humidity55%
Visibility—
Dew point58°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2578° / 62°0.1
78 °
East Waupun, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.1 in
Chance of precipitation28%
Record high89° (2013)
Record low50° (1977)
Wed, 2678° / 63°0.13
78 °
East Waupun, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.13 in
Chance of precipitation38%
Record high92° (2020)
Record low48° (1964)
Thu, 2778° / 63°0.18
78 °
East Waupun, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.18 in
Chance of precipitation38%
Record high93° (1976)
Record low49° (1968)
Fri, 2878° / 62°0.18
78 °
East Waupun, Friday, 28 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.18 in
Chance of precipitation37%
Record high92° (1984)
Record low44° (1986)
Sat, 2977° / 61°0.11
77 °
East Waupun, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.11 in
Chance of precipitation33%
Record high90° (1984)
Record low44° (1965)
Sun, 3076° / 61°0.09
76 °
East Waupun, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.09 in
Chance of precipitation35%
Record high89° (1969)
Record low48° (1974)
Mon, 3176° / 60°0.03
76 °
East Waupun, Monday, 31 August
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.03 in
Chance of precipitation20%
Record high89° (2000)
Record low47° (2009)
Tue, 0176° / 60°0.07
76 °
East Waupun, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.07 in
Chance of precipitation30%
Record high90° (2011)
Record low46° (1967)
Wed, 0276° / 60°0.09
76 °
East Waupun, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.09 in
Chance of precipitation27%
Record high91° (2008)
Record low45° (1974)
Thu, 0376° / 60°0.09
76 °
East Waupun, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.09 in
Chance of precipitation27%
Record high93° (2023)
Record low43° (1974)
Fri, 0475° / 59°0.09
75 °
East Waupun, Friday, 4 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.09 in
Chance of precipitation30%
Record high92° (2023)
Record low45° (2025)
Sat, 0575° / 59°0.07
75 °
East Waupun, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.07 in
Chance of precipitation25%
Record high88° (2023)
Record low46° (1962)
Sun, 0675° / 59°0.07
75 °
East Waupun, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.07 in
Chance of precipitation32%
Record high89° (2015)
Record low44° (1962)
Mon, 0775° / 59°0.11
75 °
East Waupun, Monday, 7 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.11 in
Chance of precipitation37%
Record high89° (1960)
Record low44° (1968)
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 East Waupun, 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 East Waupun, 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.