Monthly outlook for Rembrandt, IA: average high 86.9°, average low 61.2°. That is 4° above the climate normal for August. Precipitation is expected on 5 days (about 0.3 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 18 August (101.3°), the coolest 21 August (51.1°).
86.9°/61.2°
Average high / low
+4°
Above normal
5 / 5
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
87°
79.5°
+4.2°
18 August – 27 August
86.6°
79.7°
+3.8°
28 August – 6 September
at normal
78.5°
—
August records over 66 years
100°22 August 2023All-time high
42.1°28 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Sioux Rapids (5 mi).
Sun, 0987° / 67°0
87 °
Rembrandt, Sunday, 9 August
Clear. High 87°, low 67°.
Pressure29.74 inHg
Wind7.4 mph W
Humidity33%
Visibility6.2 mi
Dew point61°
Mon, 10101° / 68°0
101 °
Rembrandt, Monday, 10 August
Overcast. High 101°, low 68°.
Pressure29.80 inHg
Wind12.6 mph SE
Humidity54%
Visibility6.2 mi
Dew point69°
Tue, 1197° / 65°0.04
97 °
Rembrandt, Tuesday, 11 August
Light rain. High 97°, low 65°.
Pressure29.77 inHg
Wind11.5 mph NE
Humidity38%
Visibility6.2 mi
Dew point62°
Wed, 1296° / 69°0
96 °
Rembrandt, Wednesday, 12 August
Overcast. High 96°, low 69°.
Pressure29.88 inHg
Wind10.9 mph E
Humidity33%
Visibility6.2 mi
Dew point56°
Thu, 1376° / 61°0.03
76 °
Rembrandt, Thursday, 13 August
Light rain. High 76°, low 61°.
Pressure30.00 inHg
Wind11.5 mph E
Humidity82%
Visibility—
Dew point60°
Fri, 1486° / 58°0
86 °
Rembrandt, Friday, 14 August
Overcast. High 86°, low 58°.
Pressure30.09 inHg
Wind14 mph SE
Humidity29%
Visibility—
Dew point45°
Sat, 1566° / 60°0.1
66 °
Rembrandt, Saturday, 15 August
Light rain. High 66°, low 60°.
Pressure30.18 inHg
Wind13.1 mph SE
Humidity81%
Visibility—
Dew point59°
Sun, 1687° / 60°0
87 °
Rembrandt, Sunday, 16 August
Overcast. High 87°, low 60°.
Pressure30.09 inHg
Wind7.4 mph SW
Humidity53%
Visibility—
Dew point58°
Mon, 1796° / 64°0
96 °
Rembrandt, Monday, 17 August
Clear. High 96°, low 64°.
Pressure30.00 inHg
Wind12.6 mph W
Humidity33%
Visibility—
Dew point55°
Tue, 18101° / 69°0
101 °
Rembrandt, Tuesday, 18 August
Clear. High 101°, low 69°.
Pressure29.91 inHg
Wind11.9 mph W
Humidity27%
Visibility—
Dew point53°
Wed, 1984° / 59°0.05
84 °
Rembrandt, Wednesday, 19 August
Light rain. High 84°, low 59°.
Pressure30.06 inHg
Wind17.5 mph N
Humidity34%
Visibility—
Dew point46°
Thu, 2066° / 54°0.06
66 °
Rembrandt, Thursday, 20 August
Light rain. High 66°, low 54°.
Pressure30.18 inHg
Wind7.2 mph NE
Humidity91%
Visibility—
Dew point56°
Fri, 2182° / 51°0
82 °
Rembrandt, Friday, 21 August
Overcast. High 82°, low 51°.
Pressure30.00 inHg
Wind16.6 mph SE
Humidity32%
Visibility—
Dew point42°
Sat, 2294° / 58°0.05
94 °
Rembrandt, Saturday, 22 August
Light rain. High 94°, low 58°.
Pressure29.77 inHg
Wind18 mph NW
Humidity28%
Visibility—
Dew point48°
Sun, 2393° / 61°0
93 °
Rembrandt, Sunday, 23 August
Clear. High 93°, low 61°.
Pressure29.94 inHg
Wind9.7 mph E
Humidity18%
Visibility—
Dew point36°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2480° / 64°0.1
80 °
Rembrandt, Monday, 24 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.1 in
Chance of precipitation22%
Record high95° (2023)
Record low48° (1966)
Tue, 2580° / 64°0.13
80 °
Rembrandt, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.13 in
Chance of precipitation25%
Record high93° (2020)
Record low49° (2025)
Wed, 2680° / 64°0.13
80 °
Rembrandt, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.13 in
Chance of precipitation33%
Record high92° (2020)
Record low50° (2025)
Thu, 2780° / 63°0.11
80 °
Rembrandt, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.11 in
Chance of precipitation37%
Record high94° (1984)
Record low49° (1971)
Fri, 2880° / 63°0.18
80 °
Rembrandt, Friday, 28 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.18 in
Chance of precipitation32%
Record high98° (1984)
Record low42° (1986)
Sat, 2980° / 62°0.05
80 °
Rembrandt, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.05 in
Chance of precipitation15%
Record high93° (2012)
Record low48° (1988)
Sun, 3079° / 62°0.09
79 °
Rembrandt, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.09 in
Chance of precipitation28%
Record high94° (2012)
Record low47° (2009)
Mon, 3178° / 61°0.09
78 °
Rembrandt, Monday, 31 August
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.09 in
Chance of precipitation30%
Record high88° (1960)
Record low46° (2009)
Tue, 0178° / 61°0.07
78 °
Rembrandt, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.07 in
Chance of precipitation32%
Record high91° (2011)
Record low45° (1974)
Wed, 0278° / 61°0.11
78 °
Rembrandt, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.11 in
Chance of precipitation37%
Record high95° (2023)
Record low50° (1974)
Thu, 0378° / 61°0.07
78 °
Rembrandt, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.07 in
Chance of precipitation28%
Record high93° (2023)
Record low39° (1974)
Fri, 0478° / 61°0.1
78 °
Rembrandt, Friday, 4 September
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.1 in
Chance of precipitation25%
Record high94° (2023)
Record low44° (2025)
Sat, 0578° / 61°0.06
78 °
Rembrandt, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.06 in
Chance of precipitation23%
Record high90° (1960)
Record low40° (1962)
Sun, 0678° / 60°0.04
78 °
Rembrandt, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.04 in
Chance of precipitation15%
Record high96° (1976)
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 Rembrandt, 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 Rembrandt, 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.