10-day forecast for Sumter, MN: 55° to 88°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.
87°
Best day: Monday, August 10
86° · 1.13 in
Worst day: Tuesday, August 11
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1087° / 61°0
Morning65°feels 65°
Afternoon86°feels 84°
Evening77°feels 78°
Overnight64°feels 63°
87 °
Sumter, Monday, 10 August
Overcast. High 87°, low 61°.
Pressure29.88 inHg
Wind10 mph SE
Humidity37%
Visibility6.2 mi
Dew point56°
Tue, 1186° / 63°1.13
Morning66°feels 67°
Afternoon84°feels 87°
Evening77°feels 78°
Overnight70°feels 71°
86 °
Sumter, Tuesday, 11 August
Heavy rain. High 86°, low 63°.
Pressure29.83 inHg
Wind3.5 mph W
Humidity68%
Visibility6.2 mi
Dew point68°
Wed, 1283° / 61°0
Morning64°feels 63°
Afternoon83°feels 81°
Evening72°feels 72°
Overnight67°feels 66°
83 °
Sumter, Wednesday, 12 August
Clear. High 83°, low 61°.
Pressure29.94 inHg
Wind2.7 mph NE
Humidity36%
Visibility6.2 mi
Dew point51°
Thu, 1374° / 59°0
Morning63°feels 61°
Afternoon72°feels 71°
Evening70°feels 69°
Overnight63°feels 62°
74 °
Sumter, Thursday, 13 August
Overcast. High 74°, low 59°.
Pressure30.06 inHg
Wind8.7 mph NE
Humidity44%
Visibility—
Dew point47°
Fri, 1478° / 55°0
Morning62°feels 61°
Afternoon76°feels 76°
Evening71°feels 71°
Overnight61°feels 61°
78 °
Sumter, Friday, 14 August
Overcast. High 78°, low 55°.
Pressure30.15 inHg
Wind9.8 mph SE
Humidity44%
Visibility—
Dew point51°
Sat, 1566° / 58°0
Morning62°feels 61°
Afternoon64°feels 64°
Evening65°feels 65°
Overnight64°feels 63°
66 °
Sumter, Saturday, 15 August
Overcast. High 66°, low 58°.
Pressure30.18 inHg
Wind9.3 mph SE
Humidity76%
Visibility—
Dew point56°
Sun, 1687° / 62°0
Morning68°feels 68°
Afternoon82°feels 82°
Evening77°feels 76°
Overnight67°feels 65°
87 °
Sumter, Sunday, 16 August
Overcast. High 87°, low 62°.
Pressure30.09 inHg
Wind11 mph W
Humidity46%
Visibility—
Dew point57°
Mon, 1776° / 59°0
Morning64°feels 63°
Afternoon75°feels 75°
Evening75°feels 75°
Overnight67°feels 67°
76 °
Sumter, Monday, 17 August
Overcast. High 76°, low 59°.
Pressure30.06 inHg
Wind12.5 mph SE
Humidity49%
Visibility—
Dew point53°
Tue, 1888° / 67°0.36
Morning72°feels 74°
Afternoon83°feels 87°
Evening86°feels 93°
Overnight76°feels 78°
88 °
Sumter, Tuesday, 18 August
Rain. High 88°, low 67°.
Pressure29.85 inHg
Wind15.7 mph S
Humidity67%
Visibility—
Dew point68°
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 Sumter, MN 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.