Monthly outlook for St. Croix Falls, WI: average high 84.6°, average low 58°. That is 4.5° above the climate normal for August. Precipitation is expected on 6 days (about 1.1 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 18 August (92.6°), the coolest 24 August (53.1°).
84.6°/58°
Average high / low
+4.5°
Above normal
6 / 5
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
86.8°
76.9°
+5.5°
19 August – 28 August
81°
76.2°
+2.7°
29 August – 7 September
at normal
74.4°
—
August records over 66 years
96.3°16 August 1988All-time high
43°28 August 1986All-time low
Mon, 1090° / 61°0
90 °
St. Croix Falls, Monday, 10 August
Overcast. High 90°, low 61°.
Pressure29.88 inHg
Wind5.7 mph NE
Humidity31%
Visibility6.2 mi
Dew point51°
Tue, 1189° / 64°0.07
89 °
St. Croix Falls, Tuesday, 11 August
Rain. High 89°, low 64°.
Pressure29.83 inHg
Wind7.3 mph N
Humidity45%
Visibility6.2 mi
Dew point60°
Wed, 1284° / 59°0
84 °
St. Croix Falls, Wednesday, 12 August
Mostly clear. High 84°, low 59°.
Pressure29.94 inHg
Wind12.7 mph NW
Humidity26%
Visibility6.2 mi
Dew point43°
Thu, 1381° / 55°0
81 °
St. Croix Falls, Thursday, 13 August
Overcast. High 81°, low 55°.
Pressure30.00 inHg
Wind11 mph NW
Humidity25%
Visibility—
Dew point39°
Fri, 1485° / 55°0
85 °
St. Croix Falls, Friday, 14 August
Clear. High 85°, low 55°.
Pressure30.12 inHg
Wind10.7 mph E
Humidity22%
Visibility—
Dew point37°
Sat, 1588° / 57°0
88 °
St. Croix Falls, Saturday, 15 August
Overcast. High 88°, low 57°.
Pressure30.18 inHg
Wind15.4 mph S
Humidity33%
Visibility—
Dew point49°
Sun, 1686° / 54°0
86 °
St. Croix Falls, Sunday, 16 August
Overcast. High 86°, low 54°.
Pressure30.06 inHg
Wind12.8 mph SW
Humidity42%
Visibility—
Dew point53°
Mon, 1791° / 62°0.04
91 °
St. Croix Falls, Monday, 17 August
Light rain. High 91°, low 62°.
Pressure30.00 inHg
Wind6.2 mph N
Humidity21%
Visibility—
Dew point39°
Tue, 1893° / 66°0.06
93 °
St. Croix Falls, Tuesday, 18 August
Light rain. High 93°, low 66°.
Pressure29.80 inHg
Wind20.4 mph W
Humidity30%
Visibility—
Dew point53°
Wed, 1980° / 54°0.13
80 °
St. Croix Falls, Wednesday, 19 August
Rain. High 80°, low 54°.
Pressure30.00 inHg
Wind16.6 mph N
Humidity30%
Visibility—
Dew point40°
Thu, 2082° / 55°0
82 °
St. Croix Falls, Thursday, 20 August
Overcast. High 82°, low 55°.
Pressure30.09 inHg
Wind5.2 mph E
Humidity28%
Visibility—
Dew point40°
Fri, 2183° / 53°0
83 °
St. Croix Falls, Friday, 21 August
Clear. High 83°, low 53°.
Pressure30.00 inHg
Wind13.3 mph SE
Humidity27%
Visibility—
Dew point40°
Sat, 2281° / 57°0.63
81 °
St. Croix Falls, Saturday, 22 August
Rain. High 81°, low 57°.
Pressure29.74 inHg
Wind15.6 mph S
Humidity96%
Visibility—
Dew point59°
Sun, 2378° / 59°0
78 °
St. Croix Falls, Sunday, 23 August
Overcast. High 78°, low 59°.
Pressure29.91 inHg
Wind15.1 mph NW
Humidity48%
Visibility—
Dew point51°
Mon, 2481° / 53°0
81 °
St. Croix Falls, Monday, 24 August
Overcast. High 81°, low 53°.
Pressure29.91 inHg
Wind11 mph S
Humidity37%
Visibility—
Dew point49°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2577° / 62°0.11
77 °
St. Croix Falls, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.11 in
Chance of precipitation45%
Record high91° (2013)
Record low49° (2025)
Wed, 2676° / 62°0.24
76 °
St. Croix Falls, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high76°
Average low62°
Average precipitation0.24 in
Chance of precipitation47%
Record high91° (2013)
Record low47° (1964)
Thu, 2776° / 61°0.2
76 °
St. Croix Falls, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.2 in
Chance of precipitation35%
Record high90° (1991)
Record low46° (1971)
Fri, 2876° / 61°0.09
76 °
St. Croix Falls, Friday, 28 August
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.09 in
Chance of precipitation35%
Record high90° (1984)
Record low43° (1986)
Sat, 2976° / 60°0.1
76 °
St. Croix Falls, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.1 in
Chance of precipitation22%
Record high89° (2013)
Record low47° (1965)
Sun, 3075° / 60°0.1
75 °
St. Croix Falls, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.1 in
Chance of precipitation30%
Record high92° (2012)
Record low47° (2009)
Mon, 3175° / 59°0.11
75 °
St. Croix Falls, Monday, 31 August
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.11 in
Chance of precipitation38%
Record high87° (1960)
Record low46° (1967)
Tue, 0175° / 59°0.12
75 °
St. Croix Falls, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.12 in
Chance of precipitation25%
Record high90° (2011)
Record low43° (1974)
Wed, 0275° / 60°0.11
75 °
St. Croix Falls, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.11 in
Chance of precipitation33%
Record high90° (2023)
Record low45° (1974)
Thu, 0374° / 60°0.15
74 °
St. Croix Falls, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high74°
Average low60°
Average precipitation0.15 in
Chance of precipitation33%
Record high95° (2023)
Record low38° (1974)
Fri, 0474° / 58°0.15
74 °
St. Croix Falls, Friday, 4 September
Climate normal for this date — 60-year average.
Average high74°
Average low58°
Average precipitation0.15 in
Chance of precipitation28%
Record high94° (2023)
Record low43° (1974)
Sat, 0574° / 58°0.13
74 °
St. Croix Falls, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high74°
Average low58°
Average precipitation0.13 in
Chance of precipitation33%
Record high89° (2023)
Record low42° (1962)
Sun, 0673° / 58°0.1
73 °
St. Croix Falls, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high73°
Average low58°
Average precipitation0.1 in
Chance of precipitation32%
Record high89° (1960)
Record low43° (2025)
Mon, 0773° / 58°0.08
73 °
St. Croix Falls, Monday, 7 September
Climate normal for this date — 60-year average.
Average high73°
Average low58°
Average precipitation0.08 in
Chance of precipitation37%
Record high91° (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 St. Croix Falls, 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 St. Croix Falls, 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.