10-day forecast for St. Thomas, PA: 53° to 89°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.
87°
Best day: Tuesday, August 18
89° · 0.37 in
Worst day: Tuesday, August 11
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1088° / 70°0.05
Morning74°feels 74°
Afternoon82°feels 82°
Evening80°feels 80°
Overnight72°feels 72°
88 °
St. Thomas, Monday, 10 August
Light rain. High 88°, low 70°.
Pressure30.00 inHg
Wind8.7 mph W
Humidity47%
Visibility6.2 mi
Dew point65°
Tue, 1189° / 67°0.37
Morning70°feels 71°
Afternoon88°feels 88°
Evening77°feels 77°
Overnight69°feels 70°
89 °
St. Thomas, Tuesday, 11 August
Heavy rain. High 89°, low 67°.
Pressure29.94 inHg
Wind10.9 mph NW
Humidity51%
Visibility6.2 mi
Dew point64°
Wed, 1288° / 65°0.03
Morning69°feels 70°
Afternoon86°feels 88°
Evening75°feels 76°
Overnight68°feels 68°
88 °
St. Thomas, Wednesday, 12 August
Light rain. High 88°, low 65°.
Pressure29.80 inHg
Wind9.3 mph W
Humidity56%
Visibility6.2 mi
Dew point65°
Thu, 1383° / 66°0.21
Morning73°feels 73°
Afternoon80°feels 79°
Evening70°feels 69°
Overnight68°feels 69°
83 °
St. Thomas, Thursday, 13 August
Rain. High 83°, low 66°.
Pressure29.85 inHg
Wind15 mph NW
Humidity32%
Visibility—
Dew point48°
Fri, 1478° / 56°0
Morning66°feels 65°
Afternoon75°feels 74°
Evening66°feels 65°
Overnight62°feels 61°
78 °
St. Thomas, Friday, 14 August
Overcast. High 78°, low 56°.
Pressure30.06 inHg
Wind11.1 mph NW
Humidity36%
Visibility—
Dew point46°
Sat, 1578° / 54°0
Morning64°feels 63°
Afternoon74°feels 73°
Evening65°feels 64°
Overnight60°feels 59°
78 °
St. Thomas, Saturday, 15 August
Partly cloudy. High 78°, low 54°.
Pressure30.18 inHg
Wind10.7 mph N
Humidity30%
Visibility—
Dew point40°
Sun, 1675° / 53°0
Morning64°feels 62°
Afternoon74°feels 73°
Evening64°feels 63°
Overnight60°feels 58°
75 °
St. Thomas, Sunday, 16 August
Overcast. High 75°, low 53°.
Pressure30.15 inHg
Wind4.4 mph SW
Humidity35%
Visibility—
Dew point44°
Mon, 1782° / 57°0
Morning69°feels 68°
Afternoon80°feels 80°
Evening71°feels 71°
Overnight67°feels 67°
82 °
St. Thomas, Monday, 17 August
Partly cloudy. High 82°, low 57°.
Pressure29.97 inHg
Wind5.2 mph E
Humidity41%
Visibility—
Dew point53°
Tue, 1887° / 61°0
Morning71°feels 70°
Afternoon84°feels 82°
Evening72°feels 72°
Overnight70°feels 69°
87 °
St. Thomas, Tuesday, 18 August
Mostly clear. High 87°, low 61°.
Pressure30.00 inHg
Wind4.5 mph NW
Humidity32%
Visibility—
Dew point50°
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 St. Thomas, PA 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.