10-day forecast for Derry, PA: 55° to 87°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.
87°
Best day: Sunday, August 9
73° · 0.22 in
Worst day: Monday, August 17
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1087° / 71°0.2
Morning75°feels 75°
Afternoon83°feels 85°
Evening76°feels 77°
Overnight73°feels 74°
87 °
Derry, Monday, 10 August
Rain. High 87°, low 71°.
Pressure30.00 inHg
Wind5.8 mph W
Humidity60%
Visibility6.2 mi
Dew point66°
Tue, 1187° / 68°0.22
Morning71°feels 72°
Afternoon86°feels 89°
Evening77°feels 78°
Overnight71°feels 72°
87 °
Derry, Tuesday, 11 August
Rain. High 87°, low 68°.
Pressure29.91 inHg
Wind7.8 mph W
Humidity59%
Visibility6.2 mi
Dew point67°
Wed, 1285° / 68°0.03
Morning70°feels 71°
Afternoon85°feels 88°
Evening76°feels 77°
Overnight70°feels 71°
85 °
Derry, Wednesday, 12 August
Light rain. High 85°, low 68°.
Pressure29.74 inHg
Wind10 mph W
Humidity69%
Visibility6.2 mi
Dew point68°
Thu, 1381° / 64°0
Morning74°feels 74°
Afternoon79°feels 78°
Evening67°feels 66°
Overnight65°feels 64°
81 °
Derry, Thursday, 13 August
Light rain. High 81°, low 64°.
Pressure29.83 inHg
Wind13.8 mph NW
Humidity36%
Visibility—
Dew point50°
Fri, 1479° / 56°0
Morning65°feels 65°
Afternoon76°feels 75°
Evening69°feels 68°
Overnight66°feels 65°
79 °
Derry, Friday, 14 August
Clear. High 79°, low 56°.
Pressure30.03 inHg
Wind9.4 mph NW
Humidity36%
Visibility—
Dew point46°
Sat, 1579° / 57°0
Morning66°feels 66°
Afternoon76°feels 75°
Evening67°feels 66°
Overnight63°feels 62°
79 °
Derry, Saturday, 15 August
Clear. High 79°, low 57°.
Pressure30.15 inHg
Wind13 mph NW
Humidity37%
Visibility—
Dew point47°
Sun, 1679° / 55°0
Morning67°feels 66°
Afternoon78°feels 78°
Evening69°feels 69°
Overnight63°feels 62°
79 °
Derry, Sunday, 16 August
Overcast. High 79°, low 55°.
Pressure30.18 inHg
Wind6.2 mph SE
Humidity41%
Visibility—
Dew point51°
Mon, 1773° / 62°0.22
Morning66°feels 67°
Afternoon69°feels 69°
Evening66°feels 67°
Overnight65°feels 65°
73 °
Derry, Monday, 17 August
Rain. High 73°, low 62°.
Pressure30.09 inHg
Wind8.2 mph S
Humidity77%
Visibility—
Dew point61°
Tue, 1867° / 64°0.06
Morning66°feels 67°
Afternoon67°feels 68°
Evening66°feels 67°
Overnight66°feels 67°
67 °
Derry, Tuesday, 18 August
Light rain. High 67°, low 64°.
Pressure30.06 inHg
Wind6.3 mph SE
Humidity94%
Visibility—
Dew point65°
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 Derry, 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.