EN
English Español

As of 18:17 EDT

Weather in Derry, PA

83°Current weather

Derry, Saturday, 8 August, 18:17

Overcast. Feels like 91°. High 85°, low 70°.

Pressure29.97 inHg
Wind7 mph SW
Humidity78%
Visibility6.2 mi
Dew point74°
Sun, 0986° / 70°0Clear
86 °Clear

Derry, Sunday, 9 August

Clear. High 86°, low 70°.

Pressure30.00 inHg
Wind8.2 mph NW
Humidity50%
Visibility6.2 mi
Dew point65°
Mon, 1088° / 69°0.22Rain
88 °Rain

Derry, Monday, 10 August

Rain. High 88°, low 69°.

Pressure30.03 inHg
Wind8.6 mph W
Humidity72%
Visibility6.2 mi
Dew point68°
Tue, 1188° / 67°0.39Rain
88 °Rain

Derry, Tuesday, 11 August

Rain. High 88°, low 67°.

Pressure29.94 inHg
Wind6.3 mph W
Humidity65%
Visibility6.2 mi
Dew point67°
Wed, 1282° / 68°0.17Light rain
82 °Light rain

Derry, Wednesday, 12 August

Light rain. High 82°, low 68°.

Pressure29.83 inHg
Wind6.4 mph W
Humidity90%
Visibility6.2 mi
Dew point69°
Thu, 1386° / 65°0Light rain
86 °Light rain

Derry, Thursday, 13 August

Light rain. High 86°, low 65°.

Pressure29.77 inHg
Wind14.1 mph N
Humidity47%
Visibility—
Dew point61°
Fri, 1477° / 59°0.01Light rain
77 °Light rain

Derry, Friday, 14 August

Light rain. High 77°, low 59°.

Pressure29.97 inHg
Wind10.5 mph N
Humidity41%
Visibility—
Dew point48°
Sat, 1576° / 52°0Clear
76 °Clear

Derry, Saturday, 15 August

Clear. High 76°, low 52°.

Pressure30.18 inHg
Wind9.7 mph N
Humidity39%
Visibility—
Dew point46°
Sun, 1676° / 53°0Clear
76 °Clear

Derry, Sunday, 16 August

Clear. High 76°, low 53°.

Pressure30.30 inHg
Wind6.5 mph NE
Humidity40%
Visibility—
Dew point47°
Mon, 1781° / 56°0Overcast
81 °Overcast

Derry, Monday, 17 August

Overcast. High 81°, low 56°.

Pressure30.12 inHg
Wind11.6 mph SE
Humidity54%
Visibility—
Dew point60°
Tue, 1876° / 66°0.11Light rain
76 °Light rain

Derry, Tuesday, 18 August

Light rain. High 76°, low 66°.

Pressure29.97 inHg
Wind6.8 mph SW
Humidity86%
Visibility—
Dew point67°
Wed, 1982° / 64°0Partly cloudy
82 °Partly cloudy

Derry, Wednesday, 19 August

Partly cloudy. High 82°, low 64°.

Pressure29.88 inHg
Wind12.1 mph N
Humidity43%
Visibility—
Dew point56°
Thu, 2071° / 58°0Overcast
71 °Overcast

Derry, Thursday, 20 August

Overcast. High 71°, low 58°.

Pressure30.00 inHg
Wind4.8 mph NW
Humidity69%
Visibility—
Dew point55°
Fri, 2170° / 60°0.56Rain
70 °Rain

Derry, Friday, 21 August

Rain. High 70°, low 60°.

Pressure29.85 inHg
Wind5.6 mph E
Humidity97%
Visibility—
Dew point68°
Sat, 2284° / 67°0Partly cloudy
84 °Partly cloudy

Derry, Saturday, 22 August

Partly cloudy. High 84°, low 67°.

Pressure29.77 inHg
Wind10.6 mph NW
Humidity44%
Visibility—
Dew point57°
Sun, 2372° / 56°0Clear
72 °Clear

Derry, Sunday, 23 August

Clear. High 72°, low 56°.

Pressure30.03 inHg
Wind16.2 mph NW
Humidity36%
Visibility—
Dew point41°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Derry, PA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Derry, PA since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.