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As of 15:58 EDT

Weather in Derry, PA

86°Current weather

Derry, Saturday, 8 August, 15:58

Partly cloudy. Feels like 94°. High 84°, low 70°.

Pressure29.97 inHg
Wind4 mph S
Humidity69%
Visibility6.2 mi
Dew point72°
Sun, 0987° / 70°0.08Rain
87 °Rain

Derry, Sunday, 9 August

Rain. High 87°, low 70°.

Pressure30.03 inHg
Wind6.8 mph W
Humidity52%
Visibility6.2 mi
Dew point64°
Mon, 1091° / 68°0.19Rain
91 °Rain

Derry, Monday, 10 August

Rain. High 91°, low 68°.

Pressure30.03 inHg
Wind6.4 mph W
Humidity65%
Visibility6.2 mi
Dew point66°
Tue, 1189° / 66°0.29Rain
89 °Rain

Derry, Tuesday, 11 August

Rain. High 89°, low 66°.

Pressure29.94 inHg
Wind5.5 mph W
Humidity61%
Visibility6.2 mi
Dew point65°
Wed, 1279° / 67°0.05Light rain
79 °Light rain

Derry, Wednesday, 12 August

Light rain. High 79°, low 67°.

Pressure29.83 inHg
Wind2.1 mph W
Humidity95%
Visibility6.2 mi
Dew point68°
Thu, 1382° / 63°0Overcast
82 °Overcast

Derry, Thursday, 13 August

Overcast. High 82°, low 63°.

Pressure29.83 inHg
Wind14.4 mph NW
Humidity51%
Visibility—
Dew point60°
Fri, 1477° / 56°0Clear
77 °Clear

Derry, Friday, 14 August

Clear. High 77°, low 56°.

Pressure30.00 inHg
Wind11.2 mph NW
Humidity38%
Visibility—
Dew point46°
Sat, 1577° / 51°0Clear
77 °Clear

Derry, Saturday, 15 August

Clear. High 77°, low 51°.

Pressure30.21 inHg
Wind7.7 mph NW
Humidity37%
Visibility—
Dew point44°
Sun, 1678° / 52°0Mostly clear
78 °Mostly clear

Derry, Sunday, 16 August

Mostly clear. High 78°, low 52°.

Pressure30.30 inHg
Wind2.8 mph NE
Humidity34%
Visibility—
Dew point45°
Mon, 1784° / 56°0Overcast
84 °Overcast

Derry, Monday, 17 August

Overcast. High 84°, low 56°.

Pressure30.12 inHg
Wind6.3 mph SW
Humidity43%
Visibility—
Dew point55°
Tue, 1880° / 65°0.04Light rain
80 °Light rain

Derry, Tuesday, 18 August

Light rain. High 80°, low 65°.

Pressure29.94 inHg
Wind6.3 mph SW
Humidity60%
Visibility—
Dew point63°
Wed, 1978° / 62°0Overcast
78 °Overcast

Derry, Wednesday, 19 August

Overcast. High 78°, low 62°.

Pressure29.94 inHg
Wind10.4 mph N
Humidity50%
Visibility—
Dew point55°
Thu, 2065° / 58°0.01Light rain
65 °Light rain

Derry, Thursday, 20 August

Light rain. High 65°, low 58°.

Pressure30.00 inHg
Wind2.2 mph N
Humidity86%
Visibility—
Dew point57°
Fri, 2179° / 60°0.08Light rain
79 °Light rain

Derry, Friday, 21 August

Light rain. High 79°, low 60°.

Pressure29.85 inHg
Wind5.5 mph SE
Humidity62%
Visibility—
Dew point63°
Sat, 2283° / 66°0.01Light rain
83 °Light rain

Derry, Saturday, 22 August

Light rain. High 83°, low 66°.

Pressure29.80 inHg
Wind10 mph W
Humidity32%
Visibility—
Dew point48°
Sun, 2374° / 53°0Clear
74 °Clear

Derry, Sunday, 23 August

Clear. High 74°, low 53°.

Pressure30.06 inHg
Wind12.1 mph NW
Humidity34%
Visibility—
Dew point40°

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.