Monthly outlook for East Amana, IA: average high 83.1°, average low 64.1°. That is 1.2° above the climate normal for August. Precipitation is expected on 5 days (about 1.3 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 11 August (96.2°), the coolest 23 August (59.4°).
83.1°/64.1°
Average high / low
+1.2°
Above normal
5 / 5
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
82.5°
80.9°
+0.9°
19 August – 28 August
84°
81.1°
+1.6°
29 August – 7 September
at normal
79.3°
—
August records over 66 years
102°16 August 1988All-time high
44.8°28 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Tiffin (12 mi).
Mon, 1088° / 71°0
88 °
East Amana, Monday, 10 August
Overcast. High 88°, low 71°.
Pressure29.88 inHg
Wind4.1 mph NE
Humidity69%
Visibility6.2 mi
Dew point72°
Tue, 1196° / 70°0
96 °
East Amana, Tuesday, 11 August
Overcast. High 96°, low 70°.
Pressure29.77 inHg
Wind10.2 mph SW
Humidity50%
Visibility6.2 mi
Dew point68°
Wed, 1285° / 70°0.07
85 °
East Amana, Wednesday, 12 August
Rain. High 85°, low 70°.
Pressure29.88 inHg
Wind8.9 mph E
Humidity63%
Visibility6.2 mi
Dew point69°
Thu, 1370° / 65°0.57
70 °
East Amana, Thursday, 13 August
Rain. High 70°, low 65°.
Pressure29.94 inHg
Wind13.6 mph E
Humidity97%
Visibility—
Dew point69°
Fri, 1473° / 62°0.19
73 °
East Amana, Friday, 14 August
Light rain. High 73°, low 62°.
Pressure30.09 inHg
Wind16 mph E
Humidity72%
Visibility—
Dew point59°
Sat, 1577° / 62°0.46
77 °
East Amana, Saturday, 15 August
Rain. High 77°, low 62°.
Pressure30.09 inHg
Wind15.3 mph E
Humidity88%
Visibility—
Dew point66°
Sun, 1678° / 63°0
78 °
East Amana, Sunday, 16 August
Light rain. High 78°, low 63°.
Pressure30.09 inHg
Wind14.5 mph NW
Humidity67%
Visibility—
Dew point64°
Mon, 1779° / 61°0
79 °
East Amana, Monday, 17 August
Overcast. High 79°, low 61°.
Pressure30.12 inHg
Wind7.9 mph SE
Humidity64%
Visibility—
Dew point61°
Tue, 1885° / 62°0.01
85 °
East Amana, Tuesday, 18 August
Light rain. High 85°, low 62°.
Pressure29.80 inHg
Wind9.5 mph S
Humidity62%
Visibility—
Dew point65°
Wed, 1978° / 64°0
78 °
East Amana, Wednesday, 19 August
Partly cloudy. High 78°, low 64°.
Pressure29.91 inHg
Wind15.1 mph NW
Humidity59%
Visibility—
Dew point60°
Thu, 2081° / 61°0
81 °
East Amana, Thursday, 20 August
Clear. High 81°, low 61°.
Pressure29.94 inHg
Wind8.8 mph NW
Humidity49%
Visibility—
Dew point57°
Fri, 2192° / 62°0.04
92 °
East Amana, Friday, 21 August
Light rain. High 92°, low 62°.
Pressure29.71 inHg
Wind13.1 mph S
Humidity51%
Visibility—
Dew point62°
Sat, 2283° / 65°0
83 °
East Amana, Saturday, 22 August
Partly cloudy. High 83°, low 65°.
Pressure29.88 inHg
Wind18.1 mph NW
Humidity40%
Visibility—
Dew point53°
Sun, 2383° / 59°0
83 °
East Amana, Sunday, 23 August
Clear. High 83°, low 59°.
Pressure30.15 inHg
Wind7.5 mph SE
Humidity44%
Visibility—
Dew point54°
Mon, 2487° / 61°0
87 °
East Amana, Monday, 24 August
Clear. High 87°, low 61°.
Pressure30.15 inHg
Wind11.3 mph SE
Humidity40%
Visibility—
Dew point54°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 65°0.17
82 °
East Amana, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.17 in
Chance of precipitation32%
Record high96° (2003)
Record low53° (1966)
Wed, 2681° / 65°0.17
81 °
East Amana, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.17 in
Chance of precipitation35%
Record high95° (2003)
Record low49° (1964)
Thu, 2781° / 66°0.12
81 °
East Amana, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0.12 in
Chance of precipitation30%
Record high96° (2013)
Record low54° (2025)
Fri, 2881° / 64°0.2
81 °
East Amana, Friday, 28 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.2 in
Chance of precipitation35%
Record high96° (1984)
Record low45° (1986)
Sat, 2981° / 64°0.1
81 °
East Amana, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.1 in
Chance of precipitation28%
Record high95° (1984)
Record low47° (1986)
Sun, 3080° / 64°0.09
80 °
East Amana, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.09 in
Chance of precipitation23%
Record high98° (2013)
Record low51° (1974)
Mon, 3179° / 63°0.1
79 °
East Amana, Monday, 31 August
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.1 in
Chance of precipitation22%
Record high95° (2000)
Record low47° (2009)
Tue, 0179° / 63°0.09
79 °
East Amana, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.09 in
Chance of precipitation30%
Record high95° (1984)
Record low48° (1967)
Wed, 0280° / 63°0.12
80 °
East Amana, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.12 in
Chance of precipitation27%
Record high94° (2000)
Record low50° (1968)
Thu, 0379° / 63°0.09
79 °
East Amana, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.09 in
Chance of precipitation28%
Record high93° (2023)
Record low46° (1974)
Fri, 0478° / 62°0.07
78 °
East Amana, Friday, 4 September
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.07 in
Chance of precipitation27%
Record high93° (2023)
Record low42° (1974)
Sat, 0579° / 61°0.07
79 °
East Amana, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.07 in
Chance of precipitation18%
Record high92° (1960)
Record low46° (1962)
Sun, 0678° / 62°0.11
78 °
East Amana, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.11 in
Chance of precipitation27%
Record high92° (1960)
Record low46° (1962)
Mon, 0779° / 61°0.16
79 °
East Amana, Monday, 7 September
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.16 in
Chance of precipitation28%
Record high93° (2013)
Record low45° (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 Amana, 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 East Amana, 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.