10-day forecast for South Lyme, CT: 60° to 87°, with precipitation expected on 1 day. The table below breaks each day into morning, afternoon, evening and overnight.
86°
Best day: Monday, August 10
71° · 1.06 in
Worst day: Monday, August 17
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1086° / 69°0
Morning74°feels 74°
Afternoon85°feels 87°
Evening75°feels 76°
Overnight70°feels 69°
86 °
South Lyme, Monday, 10 August
Clear. High 86°, low 69°.
Pressure29.97 inHg
Wind4.3 mph S
Humidity49%
Visibility6.2 mi
Dew point57°
Tue, 1181° / 71°0.03
Morning73°feels 74°
Afternoon81°feels 83°
Evening75°feels 76°
Overnight73°feels 74°
81 °
South Lyme, Tuesday, 11 August
Light rain. High 81°, low 71°.
Pressure29.83 inHg
Wind9.1 mph NW
Humidity75%
Visibility6.2 mi
Dew point68°
Wed, 1276° / 66°0
Morning69°feels 68°
Afternoon74°feels 74°
Evening74°feels 74°
Overnight69°feels 69°
76 °
South Lyme, Wednesday, 12 August
Overcast. High 76°, low 66°.
Pressure29.83 inHg
Wind4.6 mph S
Humidity56%
Visibility6.2 mi
Dew point57°
Thu, 1380° / 69°0.03
Morning73°feels 74°
Afternoon77°feels 78°
Evening78°feels 78°
Overnight71°feels 72°
80 °
South Lyme, Thursday, 13 August
Light rain. High 80°, low 69°.
Pressure29.68 inHg
Wind16.6 mph SW
Humidity69%
Visibility6.2 mi
Dew point66°
Fri, 1475° / 62°0
Morning64°feels 63°
Afternoon71°feels 70°
Evening73°feels 73°
Overnight65°feels 64°
75 °
South Lyme, Friday, 14 August
Clear. High 75°, low 62°.
Pressure29.97 inHg
Wind14.2 mph NW
Humidity47%
Visibility—
Dew point48°
Sat, 1577° / 60°0
Morning63°feels 62°
Afternoon71°feels 70°
Evening75°feels 74°
Overnight64°feels 63°
77 °
South Lyme, Saturday, 15 August
Clear. High 77°, low 60°.
Pressure30.09 inHg
Wind16.4 mph NW
Humidity44%
Visibility—
Dew point46°
Sun, 1673° / 60°0
Morning64°feels 63°
Afternoon73°feels 72°
Evening72°feels 71°
Overnight68°feels 68°
73 °
South Lyme, Sunday, 16 August
Overcast. High 73°, low 60°.
Pressure30.15 inHg
Wind9.4 mph SW
Humidity37%
Visibility—
Dew point44°
Mon, 1771° / 67°1.06
Morning70°feels 69°
Afternoon67°feels 68°
Evening68°feels 69°
Overnight70°feels 70°
71 °
South Lyme, Monday, 17 August
Heavy rain. High 71°, low 67°.
Pressure30.00 inHg
Wind16.3 mph SE
Humidity81%
Visibility—
Dew point62°
Tue, 1876° / 64°0.01
Morning66°feels 66°
Afternoon73°feels 73°
Evening75°feels 75°
Overnight69°feels 69°
76 °
South Lyme, Tuesday, 18 August
Light rain. High 76°, low 64°.
Pressure29.94 inHg
Wind17.7 mph N
Humidity62%
Visibility—
Dew point57°
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 South Lyme, CT 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.