Monthly outlook for West Salem, WI: average high 79.2°, average low 59.9°. That is 0.3° above the climate normal for August. Precipitation is expected on 4 days (about 2.6 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 18 August (89.5°), the coolest 20 August (51.6°).
79.2°/59.9°
Average high / low
+0.3°
Above normal
4 / 5
Wet days / normal
2.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
79.7°
79°
+0.4°
18 August – 27 August
78.4°
78.4°
+0°
28 August – 6 September
at normal
76.9°
—
August records over 66 years
99.9°17 August 1988All-time high
46.6°28 August 1986All-time low
Sun, 0974° / 64°0.92
74 °
West Salem, Sunday, 9 August
Heavy rain. High 74°, low 64°.
Pressure29.83 inHg
Wind5.7 mph S
Humidity98%
Visibility6.2 mi
Dew point65°
Mon, 1085° / 71°0.03
85 °
West Salem, Monday, 10 August
Light rain. High 85°, low 71°.
Pressure29.91 inHg
Wind3.6 mph SE
Humidity73%
Visibility6.2 mi
Dew point69°
Tue, 1185° / 67°1.11
85 °
West Salem, Tuesday, 11 August
Heavy rain. High 85°, low 67°.
Pressure29.80 inHg
Wind6.5 mph N
Humidity65%
Visibility6.2 mi
Dew point67°
Wed, 1282° / 64°0
82 °
West Salem, Wednesday, 12 August
Partly cloudy. High 82°, low 64°.
Pressure29.91 inHg
Wind10.2 mph N
Humidity44%
Visibility6.2 mi
Dew point56°
Thu, 1374° / 58°0
74 °
West Salem, Thursday, 13 August
Overcast. High 74°, low 58°.
Pressure30.03 inHg
Wind5.4 mph SW
Humidity69%
Visibility—
Dew point57°
Fri, 1480° / 57°0
80 °
West Salem, Friday, 14 August
Clear. High 80°, low 57°.
Pressure30.12 inHg
Wind4.7 mph NW
Humidity52%
Visibility—
Dew point56°
Sat, 1576° / 58°0
76 °
West Salem, Saturday, 15 August
Overcast. High 76°, low 58°.
Pressure30.24 inHg
Wind12.3 mph S
Humidity61%
Visibility—
Dew point59°
Sun, 1678° / 54°0
78 °
West Salem, Sunday, 16 August
Overcast. High 78°, low 54°.
Pressure30.12 inHg
Wind5.6 mph SW
Humidity57%
Visibility—
Dew point56°
Mon, 1783° / 62°0.03
83 °
West Salem, Monday, 17 August
Light rain. High 83°, low 62°.
Pressure30.00 inHg
Wind6.3 mph W
Humidity53%
Visibility—
Dew point61°
Tue, 1890° / 66°0.07
90 °
West Salem, Tuesday, 18 August
Light rain. High 90°, low 66°.
Pressure29.85 inHg
Wind16.5 mph W
Humidity52%
Visibility—
Dew point65°
Wed, 1979° / 59°0.01
79 °
West Salem, Wednesday, 19 August
Light rain. High 79°, low 59°.
Pressure30.00 inHg
Wind15.5 mph NW
Humidity50%
Visibility—
Dew point51°
Thu, 2072° / 52°0
72 °
West Salem, Thursday, 20 August
Overcast. High 72°, low 52°.
Pressure30.12 inHg
Wind8 mph W
Humidity53%
Visibility—
Dew point49°
Fri, 2177° / 53°0
77 °
West Salem, Friday, 21 August
Clear. High 77°, low 53°.
Pressure30.06 inHg
Wind7.6 mph SE
Humidity43%
Visibility—
Dew point48°
Sat, 2274° / 56°0.45
74 °
West Salem, Saturday, 22 August
Rain. High 74°, low 56°.
Pressure29.83 inHg
Wind11.9 mph S
Humidity92%
Visibility—
Dew point60°
Sun, 2379° / 59°0.01
79 °
West Salem, Sunday, 23 August
Light rain. High 79°, low 59°.
Pressure29.88 inHg
Wind13.3 mph NW
Humidity49%
Visibility—
Dew point53°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2478° / 63°0.13
78 °
West Salem, Monday, 24 August
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.13 in
Chance of precipitation28%
Record high93° (2003)
Record low51° (1977)
Tue, 2579° / 64°0.11
79 °
West Salem, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high79°
Average low64°
Average precipitation0.11 in
Chance of precipitation27%
Record high90° (2020)
Record low52° (2025)
Wed, 2679° / 64°0.13
79 °
West Salem, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high79°
Average low64°
Average precipitation0.13 in
Chance of precipitation43%
Record high94° (2024)
Record low51° (1964)
Thu, 2779° / 64°0.16
79 °
West Salem, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high79°
Average low64°
Average precipitation0.16 in
Chance of precipitation32%
Record high92° (2013)
Record low51° (1968)
Fri, 2878° / 63°0.16
78 °
West Salem, Friday, 28 August
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.16 in
Chance of precipitation38%
Record high93° (1984)
Record low47° (1986)
Sat, 2978° / 63°0.11
78 °
West Salem, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.11 in
Chance of precipitation28%
Record high90° (1969)
Record low49° (1965)
Sun, 3077° / 62°0.11
77 °
West Salem, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.11 in
Chance of precipitation27%
Record high94° (2012)
Record low51° (2009)
Mon, 3177° / 62°0.07
77 °
West Salem, Monday, 31 August
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.07 in
Chance of precipitation22%
Record high91° (2000)
Record low48° (1967)
Tue, 0177° / 61°0.08
77 °
West Salem, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.08 in
Chance of precipitation23%
Record high93° (2011)
Record low48° (1974)
Wed, 0277° / 62°0.09
77 °
West Salem, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.09 in
Chance of precipitation27%
Record high93° (2023)
Record low48° (1974)
Thu, 0376° / 62°0.13
76 °
West Salem, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high76°
Average low62°
Average precipitation0.13 in
Chance of precipitation32%
Record high95° (2023)
Record low45° (1974)
Fri, 0476° / 60°0.1
76 °
West Salem, Friday, 4 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.1 in
Chance of precipitation30%
Record high94° (2023)
Record low45° (2025)
Sat, 0576° / 60°0.11
76 °
West Salem, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.11 in
Chance of precipitation30%
Record high91° (2023)
Record low46° (1962)
Sun, 0676° / 60°0.09
76 °
West Salem, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.09 in
Chance of precipitation25%
Record high90° (1960)
Record low47° (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 West Salem, 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 West Salem, 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.