10-day forecast for Groton, SD: 60° to 93°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.
93°
Best day: Tuesday, August 18
92° · 0.89 in
Worst day: Tuesday, August 11
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1093° / 61°0
Morning64°feels 63°
Afternoon91°feels 87°
Evening88°feels 85°
Overnight63°feels 61°
93 °
Groton, Monday, 10 August
Clear. High 93°, low 61°.
Pressure29.83 inHg
Wind2.5 mph SE
Humidity20%
Visibility6.2 mi
Dew point47°
Tue, 1192° / 64°0.89
Morning67°feels 67°
Afternoon88°feels 87°
Evening85°feels 83°
Overnight68°feels 69°
92 °
Groton, Tuesday, 11 August
Heavy rain. High 92°, low 64°.
Pressure29.85 inHg
Wind8.3 mph NE
Humidity46%
Visibility6.2 mi
Dew point60°
Wed, 1291° / 65°0
Morning67°feels 66°
Afternoon89°feels 86°
Evening79°feels 79°
Overnight70°feels 68°
91 °
Groton, Wednesday, 12 August
Mostly clear. High 91°, low 65°.
Pressure29.88 inHg
Wind8 mph E
Humidity30%
Visibility6.2 mi
Dew point50°
Thu, 1387° / 64°0
Morning68°feels 67°
Afternoon83°feels 82°
Evening82°feels 80°
Overnight69°feels 69°
87 °
Groton, Thursday, 13 August
Overcast. High 87°, low 64°.
Pressure29.94 inHg
Wind13.4 mph E
Humidity34%
Visibility—
Dew point49°
Fri, 1481° / 62°0.14
Morning68°feels 67°
Afternoon79°feels 78°
Evening66°feels 66°
Overnight64°feels 64°
81 °
Groton, Friday, 14 August
Rain. High 81°, low 62°.
Pressure30.06 inHg
Wind13.9 mph SE
Humidity37%
Visibility—
Dew point50°
Sat, 1572° / 63°0.07
Morning64°feels 65°
Afternoon67°feels 68°
Evening71°feels 71°
Overnight65°feels 65°
72 °
Groton, Saturday, 15 August
Light rain. High 72°, low 63°.
Pressure30.06 inHg
Wind11.3 mph SE
Humidity92%
Visibility—
Dew point64°
Sun, 1686° / 60°0
Morning66°feels 66°
Afternoon82°feels 81°
Evening82°feels 81°
Overnight70°feels 70°
86 °
Groton, Sunday, 16 August
Overcast. High 86°, low 60°.
Pressure30.15 inHg
Wind8.4 mph SW
Humidity41%
Visibility—
Dew point53°
Mon, 1789° / 65°0.08
Morning71°feels 71°
Afternoon85°feels 86°
Evening81°feels 83°
Overnight71°feels 72°
89 °
Groton, Monday, 17 August
Light rain. High 89°, low 65°.
Pressure29.88 inHg
Wind19.5 mph S
Humidity45%
Visibility—
Dew point59°
Tue, 1893° / 65°0
Morning72°feels 72°
Afternoon90°feels 88°
Evening86°feels 83°
Overnight70°feels 70°
93 °
Groton, Tuesday, 18 August
Overcast. High 93°, low 65°.
Pressure29.71 inHg
Wind19.7 mph NW
Humidity27%
Visibility—
Dew point49°
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 Groton, SD 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.