Monthly outlook for East Delavan, WI: average high 77°, average low 60.3°. That is 0.9° below the climate normal for August. Precipitation is expected on 7 days (about 2.3 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 10 August (85.4°), the coolest 23 August (53.5°).
77°/60.3°
Average high / low
−0.9°
Below normal
7 / 5
Wet days / normal
2.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
77.3°
78.7°
-0.8°
19 August – 28 August
76.5°
78.8°
-1.3°
29 August – 7 September
at normal
77°
—
August records over 66 years
98.2°1 August 1988All-time high
45.3°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Darien (8 mi).
Mon, 1085° / 70°0.24
85 °
East Delavan, Monday, 10 August
Rain. High 85°, low 70°.
Pressure29.91 inHg
Wind5.1 mph E
Humidity68%
Visibility6.2 mi
Dew point70°
Tue, 1178° / 65°0.68
78 °
East Delavan, Tuesday, 11 August
Heavy rain. High 78°, low 65°.
Pressure29.80 inHg
Wind7.7 mph E
Humidity81%
Visibility6.2 mi
Dew point69°
Wed, 1282° / 63°0
82 °
East Delavan, Wednesday, 12 August
Clear. High 82°, low 63°.
Pressure29.85 inHg
Wind5.3 mph NW
Humidity68%
Visibility6.2 mi
Dew point68°
Thu, 1372° / 58°0.02
72 °
East Delavan, Thursday, 13 August
Light rain. High 72°, low 58°.
Pressure29.97 inHg
Wind9 mph SE
Humidity76%
Visibility—
Dew point63°
Fri, 1472° / 57°0
72 °
East Delavan, Friday, 14 August
Partly cloudy. High 72°, low 57°.
Pressure30.18 inHg
Wind14.2 mph E
Humidity55%
Visibility—
Dew point53°
Sat, 1574° / 59°0.06
74 °
East Delavan, Saturday, 15 August
Light rain. High 74°, low 59°.
Pressure30.21 inHg
Wind15 mph SE
Humidity57%
Visibility—
Dew point55°
Sun, 1674° / 64°0.06
74 °
East Delavan, Sunday, 16 August
Light rain. High 74°, low 64°.
Pressure30.00 inHg
Wind14.7 mph NW
Humidity77%
Visibility—
Dew point65°
Mon, 1776° / 58°0
76 °
East Delavan, Monday, 17 August
Overcast. High 76°, low 58°.
Pressure30.09 inHg
Wind7.1 mph N
Humidity59%
Visibility—
Dew point57°
Tue, 1877° / 59°0
77 °
East Delavan, Tuesday, 18 August
Overcast. High 77°, low 59°.
Pressure29.88 inHg
Wind11.3 mph S
Humidity81%
Visibility—
Dew point59°
Wed, 1970° / 60°0
70 °
East Delavan, Wednesday, 19 August
Light rain. High 70°, low 60°.
Pressure29.85 inHg
Wind14 mph NW
Humidity72%
Visibility—
Dew point60°
Thu, 2074° / 58°0.08
74 °
East Delavan, Thursday, 20 August
Light rain. High 74°, low 58°.
Pressure29.94 inHg
Wind7.5 mph SE
Humidity73%
Visibility—
Dew point60°
Fri, 2179° / 60°0.06
79 °
East Delavan, Friday, 21 August
Light rain. High 79°, low 60°.
Pressure29.80 inHg
Wind14.2 mph S
Humidity75%
Visibility—
Dew point61°
Sat, 2279° / 60°0.02
79 °
East Delavan, Saturday, 22 August
Light rain. High 79°, low 60°.
Pressure29.80 inHg
Wind16.9 mph NW
Humidity52%
Visibility—
Dew point57°
Sun, 2377° / 53°0
77 °
East Delavan, Sunday, 23 August
Clear. High 77°, low 53°.
Pressure30.15 inHg
Wind11.2 mph NW
Humidity49%
Visibility—
Dew point51°
Mon, 2480° / 59°0
80 °
East Delavan, Monday, 24 August
Clear. High 80°, low 59°.
Pressure30.18 inHg
Wind8.6 mph SW
Humidity56%
Visibility—
Dew point59°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2579° / 64°0.09
79 °
East Delavan, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high79°
Average low64°
Average precipitation0.09 in
Chance of precipitation28%
Record high91° (2003)
Record low51° (1977)
Wed, 2680° / 64°0.15
80 °
East Delavan, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.15 in
Chance of precipitation30%
Record high93° (2003)
Record low49° (2025)
Thu, 2779° / 65°0.1
79 °
East Delavan, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high79°
Average low65°
Average precipitation0.1 in
Chance of precipitation28%
Record high93° (2024)
Record low50° (2025)
Fri, 2879° / 63°0.13
79 °
East Delavan, Friday, 28 August
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.13 in
Chance of precipitation37%
Record high92° (1984)
Record low46° (1986)
Sat, 2979° / 63°0.12
79 °
East Delavan, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.12 in
Chance of precipitation27%
Record high93° (1984)
Record low45° (1986)
Sun, 3078° / 62°0.07
78 °
East Delavan, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.07 in
Chance of precipitation35%
Record high91° (2013)
Record low52° (1988)
Mon, 3178° / 62°0.06
78 °
East Delavan, Monday, 31 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.06 in
Chance of precipitation22%
Record high91° (2012)
Record low48° (2009)
Tue, 0177° / 61°0.09
77 °
East Delavan, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.09 in
Chance of precipitation30%
Record high91° (2011)
Record low47° (1967)
Wed, 0278° / 62°0.05
78 °
East Delavan, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.05 in
Chance of precipitation25%
Record high92° (2008)
Record low47° (1965)
Thu, 0377° / 62°0.11
77 °
East Delavan, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.11 in
Chance of precipitation33%
Record high92° (2023)
Record low47° (1974)
Fri, 0476° / 60°0.08
76 °
East Delavan, Friday, 4 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.08 in
Chance of precipitation33%
Record high91° (2023)
Record low46° (2025)
Sat, 0576° / 60°0.08
76 °
East Delavan, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.08 in
Chance of precipitation22%
Record high88° (2023)
Record low48° (1962)
Sun, 0676° / 60°0.09
76 °
East Delavan, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.09 in
Chance of precipitation32%
Record high90° (1990)
Record low45° (1988)
Mon, 0776° / 60°0.1
76 °
East Delavan, Monday, 7 September
Climate normal for this date — 60-year average.
Average high76°
Average low60°
Average precipitation0.1 in
Chance of precipitation28%
Record high90° (1960)
Record low44° (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 East Delavan, 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 East Delavan, 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.