Monthly outlook for Campbellsport, WI: average high 78.3°, average low 61.1°. That is 0.5° above the climate normal for August. Precipitation is expected on 3 days (about 1.6 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 20 August (94.7°), the coolest 14 August (52.8°).
78.3°/61.1°
Average high / low
+0.5°
Above normal
3 / 5
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
75.9°
77.5°
-0.9°
19 August – 28 August
82.2°
77.5°
+2.7°
29 August – 7 September
at normal
75.5°
—
August records over 66 years
95.4°2 August 1964All-time high
44.1°29 August 1965All-time low
Climate normals and records are computed from the nearest reference point — Theresa (10 mi).
Mon, 1085° / 68°0
85 °
Campbellsport, Monday, 10 August
Overcast. High 85°, low 68°.
Pressure29.91 inHg
Wind4.3 mph W
Humidity67%
Visibility6.2 mi
Dew point68°
Tue, 1179° / 64°0.87
79 °
Campbellsport, Tuesday, 11 August
Heavy rain. High 79°, low 64°.
Pressure29.83 inHg
Wind15 mph SE
Humidity84%
Visibility6.2 mi
Dew point66°
Wed, 1281° / 62°0.01
81 °
Campbellsport, Wednesday, 12 August
Light rain. High 81°, low 62°.
Pressure29.85 inHg
Wind10 mph NW
Humidity61%
Visibility6.2 mi
Dew point62°
Thu, 1370° / 55°0
70 °
Campbellsport, Thursday, 13 August
Overcast. High 70°, low 55°.
Pressure30.03 inHg
Wind8.9 mph N
Humidity48%
Visibility—
Dew point47°
Fri, 1472° / 53°0
72 °
Campbellsport, Friday, 14 August
Partly cloudy. High 72°, low 53°.
Pressure30.21 inHg
Wind9.7 mph E
Humidity62%
Visibility—
Dew point54°
Sat, 1572° / 53°0
72 °
Campbellsport, Saturday, 15 August
Overcast. High 72°, low 53°.
Pressure30.27 inHg
Wind8.8 mph E
Humidity51%
Visibility—
Dew point51°
Sun, 1669° / 61°0.02
69 °
Campbellsport, Sunday, 16 August
Light rain. High 69°, low 61°.
Pressure30.09 inHg
Wind6.1 mph S
Humidity90%
Visibility—
Dew point60°
Mon, 1778° / 59°0
78 °
Campbellsport, Monday, 17 August
Overcast. High 78°, low 59°.
Pressure30.09 inHg
Wind8.7 mph E
Humidity46%
Visibility—
Dew point53°
Tue, 1876° / 57°0
76 °
Campbellsport, Tuesday, 18 August
Overcast. High 76°, low 57°.
Pressure30.03 inHg
Wind8.5 mph S
Humidity52%
Visibility—
Dew point54°
Wed, 1984° / 65°0.25
84 °
Campbellsport, Wednesday, 19 August
Rain. High 84°, low 65°.
Pressure29.88 inHg
Wind12.9 mph S
Humidity67%
Visibility—
Dew point68°
Thu, 2095° / 72°0
95 °
Campbellsport, Thursday, 20 August
Partly cloudy. High 95°, low 72°.
Pressure29.77 inHg
Wind15.6 mph N
Humidity52%
Visibility—
Dew point70°
Fri, 2185° / 63°0
85 °
Campbellsport, Friday, 21 August
Partly cloudy. High 85°, low 63°.
Pressure29.94 inHg
Wind11.5 mph E
Humidity41%
Visibility—
Dew point55°
Sat, 2282° / 62°0.01
82 °
Campbellsport, Saturday, 22 August
Light rain. High 82°, low 62°.
Pressure29.88 inHg
Wind11.7 mph SE
Humidity63%
Visibility—
Dew point63°
Sun, 2375° / 62°0.03
75 °
Campbellsport, Sunday, 23 August
Light rain. High 75°, low 62°.
Pressure29.88 inHg
Wind14.1 mph NE
Humidity71%
Visibility—
Dew point63°
Mon, 2473° / 63°0.02
73 °
Campbellsport, Monday, 24 August
Light rain. High 73°, low 63°.
Pressure30.09 inHg
Wind12.8 mph E
Humidity73%
Visibility—
Dew point62°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2578° / 63°0.09
78 °
Campbellsport, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.09 in
Chance of precipitation25%
Record high89° (2024)
Record low49° (2017)
Wed, 2678° / 64°0.13
78 °
Campbellsport, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high78°
Average low64°
Average precipitation0.13 in
Chance of precipitation40%
Record high91° (1973)
Record low49° (2025)
Thu, 2778° / 64°0.12
78 °
Campbellsport, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low64°
Average precipitation0.12 in
Chance of precipitation35%
Record high92° (1976)
Record low49° (2025)
Fri, 2878° / 62°0.17
78 °
Campbellsport, Friday, 28 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.17 in
Chance of precipitation40%
Record high91° (1984)
Record low46° (1986)
Sat, 2977° / 62°0.11
77 °
Campbellsport, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.11 in
Chance of precipitation30%
Record high90° (1984)
Record low44° (1965)
Sun, 3076° / 62°0.07
76 °
Campbellsport, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high76°
Average low62°
Average precipitation0.07 in
Chance of precipitation32%
Record high88° (1969)
Record low49° (1974)
Mon, 3176° / 60°0.04
76 °
Campbellsport, Monday, 31 August
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.04 in
Chance of precipitation17%
Record high89° (2000)
Record low48° (2009)
Tue, 0176° / 61°0.07
76 °
Campbellsport, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.07 in
Chance of precipitation30%
Record high88° (2011)
Record low46° (1967)
Wed, 0276° / 61°0.07
76 °
Campbellsport, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.07 in
Chance of precipitation22%
Record high91° (2008)
Record low46° (1974)
Thu, 0375° / 61°0.09
75 °
Campbellsport, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high75°
Average low61°
Average precipitation0.09 in
Chance of precipitation23%
Record high91° (2023)
Record low45° (1974)
Fri, 0475° / 60°0.07
75 °
Campbellsport, Friday, 4 September
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.07 in
Chance of precipitation28%
Record high90° (2023)
Record low43° (2025)
Sat, 0574° / 59°0.08
74 °
Campbellsport, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high74°
Average low59°
Average precipitation0.08 in
Chance of precipitation22%
Record high88° (2023)
Record low46° (1974)
Sun, 0675° / 60°0.08
75 °
Campbellsport, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.08 in
Chance of precipitation30%
Record high88° (1960)
Record low45° (1988)
Mon, 0774° / 59°0.11
74 °
Campbellsport, Monday, 7 September
Climate normal for this date — 60-year average.
Average high74°
Average low59°
Average precipitation0.11 in
Chance of precipitation35%
Record high89° (1960)
Record low44° (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 Campbellsport, 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 Campbellsport, 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.