Monthly outlook for Saint Catherines Bay, WI: average high 74.9°, average low 61.9°. That is 1.1° below the climate normal for August. Precipitation is expected on 7 days (about 1.8 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 10 August (82.2°), the coolest 23 August (57°).
74.9°/61.9°
Average high / low
−1.1°
Below normal
7 / 5
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
75.3°
77.3°
-1.1°
19 August – 28 August
74.3°
76.7°
-1.3°
29 August – 7 September
at normal
74.6°
—
August records over 66 years
97.3°16 August 1988All-time high
47.5°28 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Menasha (10 mi).
Mon, 1082° / 69°0
82 °
Saint Catherines Bay, Monday, 10 August
Overcast. High 82°, low 69°.
Pressure29.94 inHg
Wind5.3 mph W
Humidity81%
Visibility6.2 mi
Dew point66°
Tue, 1176° / 65°0.06
76 °
Saint Catherines Bay, Tuesday, 11 August
Rain. High 76°, low 65°.
Pressure29.88 inHg
Wind5.4 mph NE
Humidity85%
Visibility6.2 mi
Dew point66°
Wed, 1280° / 65°0
80 °
Saint Catherines Bay, Wednesday, 12 August
Clear. High 80°, low 65°.
Pressure29.85 inHg
Wind7.6 mph N
Humidity53%
Visibility6.2 mi
Dew point58°
Thu, 1370° / 62°0
70 °
Saint Catherines Bay, Thursday, 13 August
Overcast. High 70°, low 62°.
Pressure30.03 inHg
Wind10.1 mph NE
Humidity58%
Visibility—
Dew point54°
Fri, 1475° / 59°0
75 °
Saint Catherines Bay, Friday, 14 August
Overcast. High 75°, low 59°.
Pressure30.18 inHg
Wind10.9 mph SE
Humidity44%
Visibility—
Dew point48°
Sat, 1573° / 62°0.1
73 °
Saint Catherines Bay, Saturday, 15 August
Light rain. High 73°, low 62°.
Pressure30.24 inHg
Wind15 mph SE
Humidity60%
Visibility—
Dew point57°
Sun, 1666° / 61°0.65
66 °
Saint Catherines Bay, Sunday, 16 August
Rain. High 66°, low 61°.
Pressure30.03 inHg
Wind20.1 mph E
Humidity92%
Visibility—
Dew point61°
Mon, 1776° / 60°0
76 °
Saint Catherines Bay, Monday, 17 August
Mostly clear. High 76°, low 60°.
Pressure30.09 inHg
Wind10.2 mph SW
Humidity60%
Visibility—
Dew point55°
Tue, 1876° / 64°0
76 °
Saint Catherines Bay, Tuesday, 18 August
Overcast. High 76°, low 64°.
Pressure29.85 inHg
Wind16.1 mph SW
Humidity67%
Visibility—
Dew point58°
Wed, 1975° / 63°0.14
75 °
Saint Catherines Bay, Wednesday, 19 August
Rain. High 75°, low 63°.
Pressure29.83 inHg
Wind16.6 mph NW
Humidity60%
Visibility—
Dew point57°
Thu, 2072° / 58°0
72 °
Saint Catherines Bay, Thursday, 20 August
Overcast. High 72°, low 58°.
Pressure29.94 inHg
Wind13.4 mph S
Humidity57%
Visibility—
Dew point50°
Fri, 2176° / 63°0.21
76 °
Saint Catherines Bay, Friday, 21 August
Rain. High 76°, low 63°.
Pressure29.74 inHg
Wind17.2 mph SW
Humidity65%
Visibility—
Dew point60°
Sat, 2271° / 61°0.34
71 °
Saint Catherines Bay, Saturday, 22 August
Rain. High 71°, low 61°.
Pressure29.77 inHg
Wind12.2 mph N
Humidity70%
Visibility—
Dew point60°
Sun, 2373° / 57°0
73 °
Saint Catherines Bay, Sunday, 23 August
Overcast. High 73°, low 57°.
Pressure30.12 inHg
Wind11.2 mph S
Humidity57%
Visibility—
Dew point52°
Mon, 2479° / 60°0
79 °
Saint Catherines Bay, Monday, 24 August
Mostly clear. High 79°, low 60°.
Pressure30.15 inHg
Wind13.2 mph SW
Humidity53%
Visibility—
Dew point55°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2577° / 64°0.11
77 °
Saint Catherines Bay, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high77°
Average low64°
Average precipitation0.11 in
Chance of precipitation28%
Record high87° (2012)
Record low52° (2017)
Wed, 2677° / 65°0.16
77 °
Saint Catherines Bay, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high77°
Average low65°
Average precipitation0.16 in
Chance of precipitation38%
Record high91° (2020)
Record low52° (1968)
Thu, 2777° / 65°0.2
77 °
Saint Catherines Bay, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high77°
Average low65°
Average precipitation0.2 in
Chance of precipitation40%
Record high90° (2013)
Record low51° (1968)
Fri, 2876° / 64°0.13
76 °
Saint Catherines Bay, Friday, 28 August
Climate normal for this date — 60-year average.
Average high76°
Average low64°
Average precipitation0.13 in
Chance of precipitation35%
Record high91° (1984)
Record low47° (1986)
Sat, 2976° / 63°0.13
76 °
Saint Catherines Bay, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high76°
Average low63°
Average precipitation0.13 in
Chance of precipitation35%
Record high89° (1984)
Record low50° (1965)
Sun, 3075° / 63°0.1
75 °
Saint Catherines Bay, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high75°
Average low63°
Average precipitation0.1 in
Chance of precipitation25%
Record high87° (1991)
Record low51° (2009)
Mon, 3175° / 62°0.03
75 °
Saint Catherines Bay, Monday, 31 August
Climate normal for this date — 60-year average.
Average high75°
Average low62°
Average precipitation0.03 in
Chance of precipitation18%
Record high87° (2000)
Record low50° (1967)
Tue, 0175° / 62°0.1
75 °
Saint Catherines Bay, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high75°
Average low62°
Average precipitation0.1 in
Chance of precipitation28%
Record high87° (1990)
Record low51° (1974)
Wed, 0275° / 62°0.09
75 °
Saint Catherines Bay, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high75°
Average low62°
Average precipitation0.09 in
Chance of precipitation30%
Record high88° (2008)
Record low50° (1974)
Thu, 0375° / 62°0.09
75 °
Saint Catherines Bay, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high75°
Average low62°
Average precipitation0.09 in
Chance of precipitation25%
Record high92° (2023)
Record low45° (1974)
Fri, 0474° / 61°0.05
74 °
Saint Catherines Bay, Friday, 4 September
Climate normal for this date — 60-year average.
Average high74°
Average low61°
Average precipitation0.05 in
Chance of precipitation27%
Record high92° (2023)
Record low46° (2025)
Sat, 0574° / 61°0.08
74 °
Saint Catherines Bay, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high74°
Average low61°
Average precipitation0.08 in
Chance of precipitation28%
Record high87° (2007)
Record low48° (1962)
Sun, 0674° / 61°0.07
74 °
Saint Catherines Bay, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high74°
Average low61°
Average precipitation0.07 in
Chance of precipitation28%
Record high87° (1960)
Record low47° (2017)
Mon, 0773° / 60°0.12
73 °
Saint Catherines Bay, Monday, 7 September
Climate normal for this date — 60-year average.
Average high73°
Average low60°
Average precipitation0.12 in
Chance of precipitation32%
Record high88° (1960)
Record low46° (2024)
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 Saint Catherines Bay, 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 Saint Catherines Bay, 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.