Monthly outlook for Dekorra, WI: average high 79.1°, average low 62.4°. That is 0.4° above the climate normal for August. Precipitation is expected on 4 days (about 2.5 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 20 August (94.1°), the coolest 15 August (51.8°).
79.1°/62.4°
Average high / low
+0.4°
Above normal
4 / 5
Wet days / normal
2.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
76.5°
78.4°
-1.1°
19 August – 28 August
83.5°
78.3°
+2.9°
29 August – 7 September
at normal
76.4°
—
August records over 66 years
97.3°23 August 2023All-time high
44.2°29 August 1965All-time low
Climate normals and records are computed from the nearest reference point — Pardeeville (10 mi).
Mon, 1085° / 69°0
85 °
Dekorra, Monday, 10 August
Overcast. High 85°, low 69°.
Pressure29.85 inHg
Wind10.1 mph E
Humidity74%
Visibility6.2 mi
Dew point70°
Tue, 1179° / 65°0.77
79 °
Dekorra, Tuesday, 11 August
Heavy rain. High 79°, low 65°.
Pressure29.83 inHg
Wind9.4 mph SE
Humidity78%
Visibility6.2 mi
Dew point67°
Wed, 1281° / 65°0.01
81 °
Dekorra, Wednesday, 12 August
Light rain. High 81°, low 65°.
Pressure29.85 inHg
Wind7.4 mph NW
Humidity62%
Visibility6.2 mi
Dew point63°
Thu, 1370° / 58°0
70 °
Dekorra, Thursday, 13 August
Overcast. High 70°, low 58°.
Pressure30.03 inHg
Wind5.1 mph SW
Humidity56%
Visibility—
Dew point52°
Fri, 1473° / 54°0
73 °
Dekorra, Friday, 14 August
Partly cloudy. High 73°, low 54°.
Pressure30.18 inHg
Wind7.7 mph SE
Humidity63%
Visibility—
Dew point55°
Sat, 1573° / 52°0
73 °
Dekorra, Saturday, 15 August
Light rain. High 73°, low 52°.
Pressure30.24 inHg
Wind7.8 mph SE
Humidity61%
Visibility—
Dew point55°
Sun, 1674° / 62°0.03
74 °
Dekorra, Sunday, 16 August
Light rain. High 74°, low 62°.
Pressure30.09 inHg
Wind6.5 mph NW
Humidity92%
Visibility—
Dew point64°
Mon, 1777° / 61°0
77 °
Dekorra, Monday, 17 August
Overcast. High 77°, low 61°.
Pressure30.09 inHg
Wind6.8 mph NE
Humidity59%
Visibility—
Dew point58°
Tue, 1877° / 58°0
77 °
Dekorra, Tuesday, 18 August
Overcast. High 77°, low 58°.
Pressure30.00 inHg
Wind9.1 mph S
Humidity71%
Visibility—
Dew point62°
Wed, 1985° / 67°0.04
85 °
Dekorra, Wednesday, 19 August
Light rain. High 85°, low 67°.
Pressure29.85 inHg
Wind13.4 mph S
Humidity70%
Visibility—
Dew point69°
Thu, 2094° / 74°0
94 °
Dekorra, Thursday, 20 August
Light rain. High 94°, low 74°.
Pressure29.77 inHg
Wind7 mph S
Humidity57%
Visibility—
Dew point71°
Fri, 2183° / 65°0
83 °
Dekorra, Friday, 21 August
Partly cloudy. High 83°, low 65°.
Pressure29.97 inHg
Wind7.3 mph NE
Humidity53%
Visibility—
Dew point60°
Sat, 2287° / 62°0.06
87 °
Dekorra, Saturday, 22 August
Light rain. High 87°, low 62°.
Pressure29.85 inHg
Wind11.5 mph SE
Humidity70%
Visibility—
Dew point65°
Sun, 2379° / 63°0.05
79 °
Dekorra, Sunday, 23 August
Light rain. High 79°, low 63°.
Pressure29.88 inHg
Wind13.4 mph NE
Humidity67%
Visibility—
Dew point65°
Mon, 2473° / 62°0
73 °
Dekorra, Monday, 24 August
Light rain. High 73°, low 62°.
Pressure30.09 inHg
Wind8.7 mph NE
Humidity81%
Visibility—
Dew point64°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2579° / 63°0.08
79 °
Dekorra, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.08 in
Chance of precipitation28%
Record high89° (2013)
Record low48° (2017)
Wed, 2679° / 64°0.13
79 °
Dekorra, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high79°
Average low64°
Average precipitation0.13 in
Chance of precipitation37%
Record high93° (2024)
Record low49° (2025)
Thu, 2779° / 64°0.17
79 °
Dekorra, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high79°
Average low64°
Average precipitation0.17 in
Chance of precipitation38%
Record high92° (1976)
Record low48° (1968)
Fri, 2878° / 62°0.16
78 °
Dekorra, Friday, 28 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.16 in
Chance of precipitation35%
Record high92° (1984)
Record low46° (1986)
Sat, 2978° / 62°0.11
78 °
Dekorra, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.11 in
Chance of precipitation33%
Record high91° (1984)
Record low44° (1965)
Sun, 3077° / 62°0.07
77 °
Dekorra, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.07 in
Chance of precipitation32%
Record high90° (2012)
Record low48° (1974)
Mon, 3177° / 60°0.03
77 °
Dekorra, Monday, 31 August
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.03 in
Chance of precipitation15%
Record high90° (2000)
Record low48° (2009)
Tue, 0177° / 60°0.09
77 °
Dekorra, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.09 in
Chance of precipitation30%
Record high90° (2011)
Record low46° (1967)
Wed, 0277° / 61°0.09
77 °
Dekorra, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.09 in
Chance of precipitation27%
Record high91° (2008)
Record low46° (1974)
Thu, 0376° / 61°0.09
76 °
Dekorra, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.09 in
Chance of precipitation30%
Record high94° (2023)
Record low44° (1974)
Fri, 0476° / 60°0.09
76 °
Dekorra, Friday, 4 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.09 in
Chance of precipitation32%
Record high93° (2023)
Record low43° (2025)
Sat, 0575° / 59°0.07
75 °
Dekorra, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.07 in
Chance of precipitation20%
Record high90° (2023)
Record low47° (1962)
Sun, 0676° / 60°0.06
76 °
Dekorra, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.06 in
Chance of precipitation28%
Record high89° (2015)
Record low43° (1962)
Mon, 0775° / 59°0.1
75 °
Dekorra, Monday, 7 September
Climate normal for this date — 60-year average.
Average high75°
Average low59°
Average precipitation0.1 in
Chance of precipitation33%
Record high89° (1960)
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 Dekorra, 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 Dekorra, 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.