10-day forecast for Londonderry, PA: 51° to 86°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.
86°
Best day: Sunday, August 9
82° · 1.26 in
Worst day: Tuesday, August 11
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1085° / 67°0.09
Morning72°feels 72°
Afternoon80°feels 81°
Evening78°feels 79°
Overnight69°feels 68°
85 °
Londonderry, Monday, 10 August
Rain. High 85°, low 67°.
Pressure30.03 inHg
Wind10.4 mph W
Humidity56%
Visibility6.2 mi
Dew point66°
Tue, 1182° / 65°1.26
Morning68°feels 69°
Afternoon80°feels 80°
Evening72°feels 73°
Overnight67°feels 68°
82 °
Londonderry, Tuesday, 11 August
Heavy rain. High 82°, low 65°.
Pressure29.97 inHg
Wind11.3 mph NW
Humidity64%
Visibility6.2 mi
Dew point64°
Wed, 1285° / 65°0.43
Morning66°feels 67°
Afternoon85°feels 86°
Evening72°feels 74°
Overnight67°feels 68°
85 °
Londonderry, Wednesday, 12 August
Heavy rain. High 85°, low 65°.
Pressure29.83 inHg
Wind7.1 mph SW
Humidity57%
Visibility6.2 mi
Dew point62°
Thu, 1378° / 64°0
Morning70°feels 71°
Afternoon76°feels 76°
Evening67°feels 67°
Overnight69°feels 70°
78 °
Londonderry, Thursday, 13 August
Partly cloudy. High 78°, low 64°.
Pressure29.94 inHg
Wind11.1 mph NW
Humidity44%
Visibility6.2 mi
Dew point53°
Fri, 1470° / 58°0.02
Morning65°feels 65°
Afternoon69°feels 69°
Evening63°feels 63°
Overnight59°feels 59°
70 °
Londonderry, Friday, 14 August
Light rain. High 70°, low 58°.
Pressure30.09 inHg
Wind4.9 mph S
Humidity64%
Visibility—
Dew point56°
Sat, 1576° / 52°0
Morning63°feels 62°
Afternoon73°feels 72°
Evening61°feels 61°
Overnight56°feels 55°
76 °
Londonderry, Saturday, 15 August
Overcast. High 76°, low 52°.
Pressure30.21 inHg
Wind7.3 mph NW
Humidity33%
Visibility—
Dew point42°
Sun, 1667° / 51°0.08
Morning58°feels 57°
Afternoon59°feels 59°
Evening60°feels 60°
Overnight58°feels 58°
67 °
Londonderry, Sunday, 16 August
Light rain. High 67°, low 51°.
Pressure30.15 inHg
Wind3.7 mph SE
Humidity96%
Visibility—
Dew point57°
Mon, 1777° / 59°0.03
Morning67°feels 68°
Afternoon75°feels 75°
Evening64°feels 65°
Overnight61°feels 61°
77 °
Londonderry, Monday, 17 August
Light rain. High 77°, low 59°.
Pressure29.94 inHg
Wind10.9 mph NW
Humidity62%
Visibility—
Dew point61°
Tue, 1880° / 56°0
Morning67°feels 67°
Afternoon78°feels 78°
Evening68°feels 67°
Overnight65°feels 65°
80 °
Londonderry, Tuesday, 18 August
Partly cloudy. High 80°, low 56°.
Pressure29.97 inHg
Wind4.5 mph SE
Humidity40%
Visibility—
Dew point51°
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 Londonderry, 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.