10-day forecast for Harper, IA: 59° to 94°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.
93°
Best day: Tuesday, August 11
67° · 0.46 in
Worst day: Saturday, August 15
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1092° / 73°0.05
Morning76°feels 76°
Afternoon89°feels 93°
Evening80°feels 80°
Overnight76°feels 77°
92 °
Harper, Monday, 10 August
Light rain. High 92°, low 73°.
Pressure29.85 inHg
Wind6.4 mph SW
Humidity53%
Visibility6.2 mi
Dew point68°
Tue, 1193° / 75°0
Morning78°feels 79°
Afternoon93°feels 97°
Evening80°feels 85°
Overnight77°feels 78°
93 °
Harper, Tuesday, 11 August
Partly cloudy. High 93°, low 75°.
Pressure29.74 inHg
Wind11.9 mph SW
Humidity50%
Visibility6.2 mi
Dew point68°
Wed, 1286° / 70°0
Morning74°feels 75°
Afternoon84°feels 88°
Evening75°feels 76°
Overnight73°feels 75°
86 °
Harper, Wednesday, 12 August
Overcast. High 86°, low 70°.
Pressure29.85 inHg
Wind9.7 mph NE
Humidity80%
Visibility6.2 mi
Dew point70°
Thu, 1375° / 63°0.09
Morning66°feels 66°
Afternoon73°feels 73°
Evening64°feels 64°
Overnight63°feels 63°
75 °
Harper, Thursday, 13 August
Light rain. High 75°, low 63°.
Pressure29.97 inHg
Wind15.6 mph NE
Humidity69%
Visibility—
Dew point62°
Fri, 1479° / 59°0
Morning65°feels 65°
Afternoon78°feels 78°
Evening73°feels 73°
Overnight67°feels 67°
79 °
Harper, Friday, 14 August
Overcast. High 79°, low 59°.
Pressure30.09 inHg
Wind9.8 mph E
Humidity53%
Visibility—
Dew point57°
Sat, 1567° / 60°0.46
Morning64°feels 64°
Afternoon60°feels 60°
Evening63°feels 63°
Overnight64°feels 64°
67 °
Harper, Saturday, 15 August
Rain. High 67°, low 60°.
Pressure30.24 inHg
Wind15.3 mph E
Humidity88%
Visibility—
Dew point57°
Sun, 1677° / 62°0
Morning65°feels 66°
Afternoon73°feels 74°
Evening74°feels 74°
Overnight70°feels 70°
77 °
Harper, Sunday, 16 August
Overcast. High 77°, low 62°.
Pressure30.12 inHg
Wind7.4 mph E
Humidity73%
Visibility—
Dew point62°
Mon, 1785° / 67°0.04
Morning71°feels 73°
Afternoon82°feels 85°
Evening79°feels 82°
Overnight71°feels 72°
85 °
Harper, Monday, 17 August
Light rain. High 85°, low 67°.
Pressure30.06 inHg
Wind7.9 mph SE
Humidity62%
Visibility—
Dew point66°
Tue, 1889° / 67°0
Morning72°feels 74°
Afternoon85°feels 88°
Evening83°feels 88°
Overnight74°feels 76°
89 °
Harper, Tuesday, 18 August
Overcast. High 89°, low 67°.
Pressure29.97 inHg
Wind9.2 mph S
Humidity55%
Visibility—
Dew point65°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Harper, IA around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.