Monthly outlook for Avon Lake, IA: average high 89°, average low 69.3°. That is 3.9° above the climate normal for August. Precipitation is expected on 5 days (about 1.5 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 22 August (112.5°), the coolest 15 August (60.6°).
89°/69.3°
Average high / low
+3.9°
Above normal
5 / 5
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
83.9°
82.1°
+1°
19 August – 28 August
97.5°
82.2°
+8.5°
29 August – 7 September
at normal
80.4°
—
August records over 66 years
101.5°16 August 1983All-time high
45°28 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Des Moines (7 mi).
Mon, 1088° / 73°0
88 °
Avon Lake, Monday, 10 August
Overcast. High 88°, low 73°.
Pressure29.85 inHg
Wind13.6 mph SE
Humidity70%
Visibility6.2 mi
Dew point73°
Tue, 1199° / 71°0.07
99 °
Avon Lake, Tuesday, 11 August
Rain. High 99°, low 71°.
Pressure29.74 inHg
Wind10.6 mph SW
Humidity42%
Visibility6.2 mi
Dew point65°
Wed, 1286° / 72°0.06
86 °
Avon Lake, Wednesday, 12 August
Light rain. High 86°, low 72°.
Pressure29.85 inHg
Wind5.7 mph E
Humidity66%
Visibility6.2 mi
Dew point68°
Thu, 1375° / 63°0.39
75 °
Avon Lake, Thursday, 13 August
Rain. High 75°, low 63°.
Pressure29.94 inHg
Wind16.8 mph NE
Humidity62%
Visibility—
Dew point60°
Fri, 1467° / 63°0.84
67 °
Avon Lake, Friday, 14 August
Heavy rain. High 67°, low 63°.
Pressure30.12 inHg
Wind12.6 mph E
Humidity94%
Visibility—
Dew point63°
Sat, 1572° / 61°0.03
72 °
Avon Lake, Saturday, 15 August
Light rain. High 72°, low 61°.
Pressure30.12 inHg
Wind11.2 mph SE
Humidity86%
Visibility—
Dew point65°
Sun, 1681° / 66°0
81 °
Avon Lake, Sunday, 16 August
Overcast. High 81°, low 66°.
Pressure30.12 inHg
Wind9.1 mph N
Humidity63%
Visibility—
Dew point65°
Mon, 1785° / 67°0
85 °
Avon Lake, Monday, 17 August
Overcast. High 85°, low 67°.
Pressure30.06 inHg
Wind7.4 mph SE
Humidity62%
Visibility—
Dew point66°
Tue, 1890° / 66°0
90 °
Avon Lake, Tuesday, 18 August
Overcast. High 90°, low 66°.
Pressure29.88 inHg
Wind14.2 mph S
Humidity60%
Visibility—
Dew point69°
Wed, 1998° / 71°0
98 °
Avon Lake, Wednesday, 19 August
Partly cloudy. High 98°, low 71°.
Pressure29.77 inHg
Wind10 mph SE
Humidity31%
Visibility—
Dew point59°
Thu, 2096° / 74°0
96 °
Avon Lake, Thursday, 20 August
Overcast. High 96°, low 74°.
Pressure29.77 inHg
Wind12.1 mph NE
Humidity49%
Visibility—
Dew point68°
Fri, 2189° / 70°0.02
89 °
Avon Lake, Friday, 21 August
Light rain. High 89°, low 70°.
Pressure29.94 inHg
Wind12.7 mph E
Humidity50%
Visibility—
Dew point62°
Sat, 22113° / 73°0
113 °
Avon Lake, Saturday, 22 August
Clear. High 113°, low 73°.
Pressure29.71 inHg
Wind18.1 mph SW
Humidity26%
Visibility—
Dew point57°
Sun, 2395° / 76°0.08
95 °
Avon Lake, Sunday, 23 August
Light rain. High 95°, low 76°.
Pressure29.80 inHg
Wind17.2 mph NE
Humidity38%
Visibility—
Dew point63°
Mon, 2494° / 71°0.02
94 °
Avon Lake, Monday, 24 August
Light rain. High 94°, low 71°.
Pressure29.91 inHg
Wind8.2 mph SE
Humidity49%
Visibility—
Dew point67°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2583° / 65°0.12
83 °
Avon Lake, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.12 in
Chance of precipitation32%
Record high97° (2003)
Record low53° (2015)
Wed, 2682° / 66°0.19
82 °
Avon Lake, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.19 in
Chance of precipitation33%
Record high95° (2013)
Record low50° (2015)
Thu, 2782° / 66°0.17
82 °
Avon Lake, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.17 in
Chance of precipitation30%
Record high97° (2013)
Record low53° (1971)
Fri, 2882° / 65°0.14
82 °
Avon Lake, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.14 in
Chance of precipitation35%
Record high96° (1984)
Record low45° (1986)
Sat, 2982° / 65°0.11
82 °
Avon Lake, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.11 in
Chance of precipitation27%
Record high95° (1984)
Record low50° (1988)
Sun, 3081° / 65°0.16
81 °
Avon Lake, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.16 in
Chance of precipitation22%
Record high98° (2013)
Record low50° (2009)
Mon, 3181° / 64°0.09
81 °
Avon Lake, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.09 in
Chance of precipitation25%
Record high94° (2000)
Record low47° (2009)
Tue, 0181° / 64°0.09
81 °
Avon Lake, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.09 in
Chance of precipitation27%
Record high95° (1984)
Record low47° (1967)
Wed, 0281° / 64°0.11
81 °
Avon Lake, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.11 in
Chance of precipitation30%
Record high95° (2000)
Record low52° (1974)
Thu, 0380° / 64°0.09
80 °
Avon Lake, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.09 in
Chance of precipitation23%
Record high95° (2023)
Record low43° (1974)
Fri, 0480° / 63°0.07
80 °
Avon Lake, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.07 in
Chance of precipitation28%
Record high96° (2012)
Record low45° (1974)
Sat, 0580° / 62°0.08
80 °
Avon Lake, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.08 in
Chance of precipitation23%
Record high93° (2023)
Record low45° (1962)
Sun, 0680° / 63°0.08
80 °
Avon Lake, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.08 in
Chance of precipitation23%
Record high93° (2020)
Record low46° (1988)
Mon, 0779° / 62°0.16
79 °
Avon Lake, Monday, 7 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.16 in
Chance of precipitation27%
Record high94° (2013)
Record low46° (1986)
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 Avon Lake, IA 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 Avon Lake, IA 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.