Monthly outlook for Hillsdale, WI: average high 83.5°, average low 59.9°. That is 4° above the climate normal for August. Precipitation is expected on 9 days (about 1.4 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 19 August (94.4°), the coolest 14 August (51.5°).
83.5°/59.9°
Average high / low
+4°
Above normal
9 / 5
Wet days / normal
1.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
82.7°
76.7°
+3.3°
19 August – 28 August
84.8°
75.9°
+4.9°
29 August – 7 September
at normal
74.2°
—
August records over 66 years
95.9°16 August 1988All-time high
44.1°21 August 2004All-time low
Climate normals and records are computed from the nearest reference point — Ridgeland (8 mi).
Mon, 1088° / 65°0.04
88 °
Hillsdale, Monday, 10 August
Light rain. High 88°, low 65°.
Pressure29.91 inHg
Wind4.9 mph NE
Humidity37%
Visibility6.2 mi
Dew point53°
Tue, 1190° / 66°0.11
90 °
Hillsdale, Tuesday, 11 August
Rain. High 90°, low 66°.
Pressure29.80 inHg
Wind3.2 mph W
Humidity52%
Visibility6.2 mi
Dew point65°
Wed, 1284° / 57°0
84 °
Hillsdale, Wednesday, 12 August
Clear. High 84°, low 57°.
Pressure29.88 inHg
Wind10.8 mph N
Humidity28%
Visibility6.2 mi
Dew point45°
Thu, 1377° / 53°0
77 °
Hillsdale, Thursday, 13 August
Overcast. High 77°, low 53°.
Pressure30.03 inHg
Wind7.7 mph E
Humidity30%
Visibility—
Dew point38°
Fri, 1482° / 52°0
82 °
Hillsdale, Friday, 14 August
Partly cloudy. High 82°, low 52°.
Pressure30.18 inHg
Wind6 mph SE
Humidity29%
Visibility—
Dew point40°
Sat, 1572° / 55°0
72 °
Hillsdale, Saturday, 15 August
Overcast. High 72°, low 55°.
Pressure30.21 inHg
Wind12.1 mph S
Humidity35%
Visibility—
Dew point41°
Sun, 1687° / 60°0
87 °
Hillsdale, Sunday, 16 August
Overcast. High 87°, low 60°.
Pressure30.03 inHg
Wind15.1 mph NW
Humidity40%
Visibility—
Dew point53°
Mon, 1782° / 54°0
82 °
Hillsdale, Monday, 17 August
Overcast. High 82°, low 54°.
Pressure30.12 inHg
Wind6.8 mph NE
Humidity29%
Visibility—
Dew point41°
Tue, 1885° / 61°0.07
85 °
Hillsdale, Tuesday, 18 August
Light rain. High 85°, low 61°.
Pressure29.88 inHg
Wind15.1 mph S
Humidity51%
Visibility—
Dew point60°
Wed, 1994° / 68°0.4
94 °
Hillsdale, Wednesday, 19 August
Rain. High 94°, low 68°.
Pressure29.80 inHg
Wind10.3 mph S
Humidity50%
Visibility—
Dew point67°
Thu, 2091° / 67°0.26
91 °
Hillsdale, Thursday, 20 August
Rain. High 91°, low 67°.
Pressure29.83 inHg
Wind15.1 mph NW
Humidity29%
Visibility—
Dew point51°
Fri, 2183° / 58°0
83 °
Hillsdale, Friday, 21 August
Overcast. High 83°, low 58°.
Pressure29.97 inHg
Wind11.9 mph N
Humidity36%
Visibility—
Dew point50°
Sat, 2285° / 61°0.11
85 °
Hillsdale, Saturday, 22 August
Light rain. High 85°, low 61°.
Pressure29.85 inHg
Wind11.7 mph NE
Humidity67%
Visibility—
Dew point63°
Sun, 2378° / 62°0.17
78 °
Hillsdale, Sunday, 23 August
Light rain. High 78°, low 62°.
Pressure29.97 inHg
Wind11.9 mph E
Humidity62%
Visibility—
Dew point58°
Mon, 2478° / 58°0.06
78 °
Hillsdale, Monday, 24 August
Light rain. High 78°, low 58°.
Pressure30.09 inHg
Wind8.5 mph E
Humidity71%
Visibility—
Dew point61°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2577° / 61°0.13
77 °
Hillsdale, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.13 in
Chance of precipitation37%
Record high91° (2013)
Record low49° (2025)
Wed, 2676° / 62°0.19
76 °
Hillsdale, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high76°
Average low62°
Average precipitation0.19 in
Chance of precipitation47%
Record high91° (1991)
Record low47° (1964)
Thu, 2776° / 61°0.2
76 °
Hillsdale, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.2 in
Chance of precipitation40%
Record high90° (1991)
Record low47° (1971)
Fri, 2875° / 60°0.11
75 °
Hillsdale, Friday, 28 August
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.11 in
Chance of precipitation32%
Record high91° (1984)
Record low44° (1986)
Sat, 2976° / 60°0.11
76 °
Hillsdale, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.11 in
Chance of precipitation28%
Record high89° (2012)
Record low46° (1965)
Sun, 3075° / 60°0.13
75 °
Hillsdale, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.13 in
Chance of precipitation30%
Record high93° (2012)
Record low48° (2009)
Mon, 3175° / 58°0.14
75 °
Hillsdale, Monday, 31 August
Climate normal for this date — 60-year average.
Average high75°
Average low58°
Average precipitation0.14 in
Chance of precipitation30%
Record high87° (1960)
Record low45° (1967)
Tue, 0175° / 59°0.11
75 °
Hillsdale, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.11 in
Chance of precipitation30%
Record high90° (2011)
Record low43° (1974)
Wed, 0275° / 59°0.13
75 °
Hillsdale, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.13 in
Chance of precipitation35%
Record high88° (2023)
Record low45° (1974)
Thu, 0374° / 59°0.15
74 °
Hillsdale, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high74°
Average low59°
Average precipitation0.15 in
Chance of precipitation33%
Record high94° (2023)
Record low40° (1974)
Fri, 0474° / 58°0.14
74 °
Hillsdale, Friday, 4 September
Climate normal for this date — 60-year average.
Average high74°
Average low58°
Average precipitation0.14 in
Chance of precipitation32%
Record high93° (2023)
Record low43° (1974)
Sat, 0574° / 58°0.16
74 °
Hillsdale, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high74°
Average low58°
Average precipitation0.16 in
Chance of precipitation30%
Record high89° (2023)
Record low43° (1962)
Sun, 0673° / 58°0.13
73 °
Hillsdale, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high73°
Average low58°
Average precipitation0.13 in
Chance of precipitation32%
Record high89° (1960)
Record low44° (2025)
Mon, 0773° / 57°0.1
73 °
Hillsdale, Monday, 7 September
Climate normal for this date — 60-year average.
Average high73°
Average low57°
Average precipitation0.1 in
Chance of precipitation42%
Record high90° (1976)
Record low42° (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 Hillsdale, 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 Hillsdale, 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.