Monthly outlook for New Amsterdam, WI: average high 81.4°, average low 63.3°. That is 1.6° above the climate normal for August. Precipitation is expected on 4 days (about 2.2 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 20 August (96.8°), the coolest 14 August (53.9°).
81.4°/63.3°
Average high / low
+1.6°
Above normal
4 / 5
Wet days / normal
2.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
78.4°
78.8°
-0.2°
19 August – 28 August
86.3°
78.4°
+4.4°
29 August – 7 September
at normal
76.6°
—
August records over 66 years
99.9°17 August 1988All-time high
46.6°28 August 1986All-time low
Climate normals and records are computed from the nearest reference point — West Salem (13 mi).
Mon, 1085° / 71°0
85 °
New Amsterdam, Monday, 10 August
Overcast. High 85°, low 71°.
Pressure29.94 inHg
Wind5.6 mph SW
Humidity77%
Visibility6.2 mi
Dew point70°
Tue, 1185° / 67°0.83
85 °
New Amsterdam, Tuesday, 11 August
Heavy rain. High 85°, low 67°.
Pressure29.80 inHg
Wind3 mph NE
Humidity68%
Visibility6.2 mi
Dew point69°
Wed, 1283° / 62°0
83 °
New Amsterdam, Wednesday, 12 August
Light rain. High 83°, low 62°.
Pressure29.91 inHg
Wind5.6 mph NW
Humidity48%
Visibility6.2 mi
Dew point57°
Thu, 1374° / 59°0
74 °
New Amsterdam, Thursday, 13 August
Overcast. High 74°, low 59°.
Pressure30.06 inHg
Wind4.7 mph SW
Humidity48%
Visibility—
Dew point51°
Fri, 1477° / 54°0
77 °
New Amsterdam, Friday, 14 August
Overcast. High 77°, low 54°.
Pressure30.18 inHg
Wind7.7 mph E
Humidity45%
Visibility—
Dew point50°
Sat, 1568° / 55°0
68 °
New Amsterdam, Saturday, 15 August
Overcast. High 68°, low 55°.
Pressure30.24 inHg
Wind8.5 mph SE
Humidity68%
Visibility—
Dew point53°
Sun, 1680° / 64°0.01
80 °
New Amsterdam, Sunday, 16 August
Light rain. High 80°, low 64°.
Pressure30.06 inHg
Wind7.8 mph SW
Humidity63%
Visibility—
Dew point63°
Mon, 1779° / 57°0
79 °
New Amsterdam, Monday, 17 August
Overcast. High 79°, low 57°.
Pressure30.09 inHg
Wind6.1 mph NE
Humidity47%
Visibility—
Dew point53°
Tue, 1880° / 61°0
80 °
New Amsterdam, Tuesday, 18 August
Light rain. High 80°, low 61°.
Pressure29.97 inHg
Wind11.7 mph S
Humidity71%
Visibility—
Dew point64°
Wed, 1989° / 69°0
89 °
New Amsterdam, Wednesday, 19 August
Overcast. High 89°, low 69°.
Pressure29.83 inHg
Wind9.7 mph SE
Humidity64%
Visibility—
Dew point70°
Thu, 2097° / 74°0
97 °
New Amsterdam, Thursday, 20 August
Partly cloudy. High 97°, low 74°.
Pressure29.77 inHg
Wind12.4 mph NW
Humidity44%
Visibility—
Dew point67°
Fri, 2185° / 63°0
85 °
New Amsterdam, Friday, 21 August
Overcast. High 85°, low 63°.
Pressure29.97 inHg
Wind6.5 mph N
Humidity40%
Visibility—
Dew point55°
Sat, 2289° / 65°0.1
89 °
New Amsterdam, Saturday, 22 August
Light rain. High 89°, low 65°.
Pressure29.83 inHg
Wind14 mph SE
Humidity58%
Visibility—
Dew point62°
Sun, 2382° / 64°0.11
82 °
New Amsterdam, Sunday, 23 August
Light rain. High 82°, low 64°.
Pressure29.88 inHg
Wind13.5 mph E
Humidity58%
Visibility—
Dew point64°
Mon, 2476° / 62°0.01
76 °
New Amsterdam, Monday, 24 August
Light rain. High 76°, low 62°.
Pressure30.09 inHg
Wind8.4 mph SE
Humidity80%
Visibility—
Dew point64°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2579° / 64°0.11
79 °
New Amsterdam, 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 °
New Amsterdam, 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 °
New Amsterdam, 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 °
New Amsterdam, 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 °
New Amsterdam, 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 °
New Amsterdam, 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 °
New Amsterdam, 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 °
New Amsterdam, 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 °
New Amsterdam, 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 °
New Amsterdam, 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 °
New Amsterdam, 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 °
New Amsterdam, 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 °
New Amsterdam, 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)
Mon, 0775° / 60°0.11
75 °
New Amsterdam, Monday, 7 September
Climate normal for this date — 60-year average.
Average high75°
Average low60°
Average precipitation0.11 in
Chance of precipitation35%
Record high91° (1978)
Record low43° (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 New Amsterdam, 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 New Amsterdam, 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.