Monthly outlook for Clark, WI: average high 79.5°, average low 56.2°. That is 2.2° above the climate normal for August. Precipitation is expected on 6 days (about 0.9 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 18 August (94.1°), the coolest 20 August (50°).
79.5°/56.2°
Average high / low
+2.2°
Above normal
6 / 6
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
81.1°
75.9°
+2.9°
18 August – 27 August
76.8°
75°
+1°
28 August – 6 September
at normal
73.4°
—
August records over 66 years
95.9°16 August 1988All-time high
42.4°28 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Gilman (12 mi).
Sun, 0974° / 62°0.23
74 °
Clark, Sunday, 9 August
Rain. High 74°, low 62°.
Pressure29.85 inHg
Wind7.7 mph S
Humidity99%
Visibility1.5 mi
Dew point64°
Mon, 1086° / 64°0.04
86 °
Clark, Monday, 10 August
Light rain. High 86°, low 64°.
Pressure29.91 inHg
Wind2 mph S
Humidity53%
Visibility6.2 mi
Dew point63°
Tue, 1187° / 60°0.14
87 °
Clark, Tuesday, 11 August
Rain. High 87°, low 60°.
Pressure29.83 inHg
Wind1.5 mph SW
Humidity69%
Visibility6.2 mi
Dew point67°
Wed, 1280° / 57°0
80 °
Clark, Wednesday, 12 August
Clear. High 80°, low 57°.
Pressure29.88 inHg
Wind13.1 mph NW
Humidity32%
Visibility6.2 mi
Dew point46°
Thu, 1378° / 51°0
78 °
Clark, Thursday, 13 August
Overcast. High 78°, low 51°.
Pressure30.03 inHg
Wind7.3 mph E
Humidity34%
Visibility—
Dew point42°
Fri, 1481° / 52°0
81 °
Clark, Friday, 14 August
Clear. High 81°, low 52°.
Pressure30.12 inHg
Wind9.8 mph E
Humidity29%
Visibility—
Dew point41°
Sat, 1581° / 53°0
81 °
Clark, Saturday, 15 August
Overcast. High 81°, low 53°.
Pressure30.24 inHg
Wind9.6 mph E
Humidity43%
Visibility—
Dew point51°
Sun, 1679° / 54°0
79 °
Clark, Sunday, 16 August
Overcast. High 79°, low 54°.
Pressure30.09 inHg
Wind8.8 mph SW
Humidity43%
Visibility—
Dew point50°
Mon, 1786° / 61°0.09
86 °
Clark, Monday, 17 August
Light rain. High 86°, low 61°.
Pressure30.00 inHg
Wind7.8 mph NW
Humidity33%
Visibility—
Dew point49°
Tue, 1894° / 64°0.07
94 °
Clark, Tuesday, 18 August
Light rain. High 94°, low 64°.
Pressure29.80 inHg
Wind17.2 mph W
Humidity47%
Visibility—
Dew point62°
Wed, 1969° / 55°0.02
69 °
Clark, Wednesday, 19 August
Light rain. High 69°, low 55°.
Pressure29.97 inHg
Wind16.5 mph N
Humidity49%
Visibility—
Dew point48°
Thu, 2078° / 50°0
78 °
Clark, Thursday, 20 August
Overcast. High 78°, low 50°.
Pressure30.09 inHg
Wind8.6 mph NE
Humidity34%
Visibility—
Dew point41°
Fri, 2178° / 50°0
78 °
Clark, Friday, 21 August
Clear. High 78°, low 50°.
Pressure30.06 inHg
Wind8.4 mph S
Humidity29%
Visibility—
Dew point39°
Sat, 2263° / 55°0.31
63 °
Clark, Saturday, 22 August
Rain. High 63°, low 55°.
Pressure29.80 inHg
Wind13.9 mph S
Humidity97%
Visibility—
Dew point55°
Sun, 2378° / 54°0.02
78 °
Clark, Sunday, 23 August
Light rain. High 78°, low 54°.
Pressure29.85 inHg
Wind15 mph NW
Humidity45%
Visibility—
Dew point50°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2475° / 60°0.1
75 °
Clark, Monday, 24 August
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.1 in
Chance of precipitation32%
Record high88° (2003)
Record low46° (1977)
Tue, 2576° / 60°0.09
76 °
Clark, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.09 in
Chance of precipitation30%
Record high90° (2013)
Record low48° (2025)
Wed, 2676° / 61°0.15
76 °
Clark, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.15 in
Chance of precipitation45%
Record high89° (1991)
Record low46° (1964)
Thu, 2776° / 60°0.21
76 °
Clark, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.21 in
Chance of precipitation47%
Record high89° (1973)
Record low47° (1968)
Fri, 2874° / 60°0.1
74 °
Clark, Friday, 28 August
Climate normal for this date — 60-year average.
Average high74°
Average low60°
Average precipitation0.1 in
Chance of precipitation37%
Record high91° (1984)
Record low42° (1986)
Sat, 2974° / 59°0.11
74 °
Clark, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high74°
Average low59°
Average precipitation0.11 in
Chance of precipitation32%
Record high89° (2012)
Record low45° (1965)
Sun, 3074° / 59°0.13
74 °
Clark, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high74°
Average low59°
Average precipitation0.13 in
Chance of precipitation33%
Record high92° (2012)
Record low46° (2009)
Mon, 3174° / 58°0.14
74 °
Clark, Monday, 31 August
Climate normal for this date — 60-year average.
Average high74°
Average low58°
Average precipitation0.14 in
Chance of precipitation27%
Record high87° (2000)
Record low44° (1967)
Tue, 0174° / 58°0.11
74 °
Clark, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high74°
Average low58°
Average precipitation0.11 in
Chance of precipitation28%
Record high89° (2011)
Record low43° (1974)
Wed, 0274° / 58°0.14
74 °
Clark, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high74°
Average low58°
Average precipitation0.14 in
Chance of precipitation40%
Record high87° (2023)
Record low44° (1974)
Thu, 0373° / 58°0.11
73 °
Clark, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high73°
Average low58°
Average precipitation0.11 in
Chance of precipitation30%
Record high93° (2023)
Record low40° (1974)
Fri, 0473° / 57°0.1
73 °
Clark, Friday, 4 September
Climate normal for this date — 60-year average.
Average high73°
Average low57°
Average precipitation0.1 in
Chance of precipitation32%
Record high92° (2023)
Record low41° (2025)
Sat, 0573° / 57°0.13
73 °
Clark, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high73°
Average low57°
Average precipitation0.13 in
Chance of precipitation32%
Record high89° (2023)
Record low43° (1962)
Sun, 0672° / 57°0.13
72 °
Clark, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high72°
Average low57°
Average precipitation0.13 in
Chance of precipitation32%
Record high88° (1960)
Record low44° (1988)
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 Clark, 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 Clark, 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.