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As of 22:09 EDT

Weather in West Derry, PA

45°Current weather

West Derry, Sunday, 25 October, 22:09

Clear. Feels like 45°. High 64°, low 34°.

Pressure30.42 inHg
Wind0 mph N
Humidity85%
Visibility6.2 mi
Dew point41°
Mon, 2667° / 39°0Clear
67 °Clear

West Derry, Monday, 26 October

Clear. High 67°, low 39°.

Pressure30.36 inHg
Wind5.4 mph SW
Humidity63%
Visibility6.2 mi
Dew point47°
Tue, 2765° / 42°0Overcast
65 °Overcast

West Derry, Tuesday, 27 October

Overcast. High 65°, low 42°.

Pressure30.36 inHg
Wind2.8 mph NE
Humidity75%
Visibility6.2 mi
Dew point51°
Wed, 2869° / 46°0Overcast
69 °Overcast

West Derry, Wednesday, 28 October

Overcast. High 69°, low 46°.

Pressure30.33 inHg
Wind3.7 mph SE
Humidity65%
Visibility6.2 mi
Dew point53°
Thu, 2967° / 49°0Clear
67 °Clear

West Derry, Thursday, 29 October

Clear. High 67°, low 49°.

Pressure30.21 inHg
Wind7.7 mph SW
Humidity61%
Visibility6.2 mi
Dew point50°
Fri, 3065° / 51°0Overcast
65 °Overcast

West Derry, Friday, 30 October

Overcast. High 65°, low 51°.

Pressure30.18 inHg
Wind6.5 mph SW
Humidity68%
Visibility—
Dew point52°
Sat, 3165° / 46°0Overcast
65 °Overcast

West Derry, Saturday, 31 October

Overcast. High 65°, low 46°.

Pressure30.27 inHg
Wind5.2 mph E
Humidity57%
Visibility—
Dew point47°
Sun, 0165° / 43°0Overcast
65 °Overcast

West Derry, Sunday, 1 November

Overcast. High 65°, low 43°.

Pressure30.21 inHg
Wind7.6 mph SE
Humidity57%
Visibility—
Dew point46°
Mon, 0253° / 50°0.81Rain
53 °Rain

West Derry, Monday, 2 November

Rain. High 53°, low 50°.

Pressure29.77 inHg
Wind17.5 mph SE
Humidity91%
Visibility—
Dew point50°
Tue, 0353° / 45°0.16Light rain
53 °Light rain

West Derry, Tuesday, 3 November

Light rain. High 53°, low 45°.

Pressure29.88 inHg
Wind7.5 mph N
Humidity92%
Visibility—
Dew point47°
Wed, 0449° / 38°0.02Light snow
49 °Light snow

West Derry, Wednesday, 4 November

Light snow. High 49°, low 38°.

Pressure30.15 inHg
Wind7.4 mph N
Humidity52%
Visibility—
Dew point31°
Thu, 0544° / 30°0.01Light snow
44 °Light snow

West Derry, Thursday, 5 November

Light snow. High 44°, low 30°.

Pressure30.39 inHg
Wind7.7 mph NE
Humidity44%
Visibility—
Dew point22°
Fri, 0648° / 28°0Clear
48 °Clear

West Derry, Friday, 6 November

Clear. High 48°, low 28°.

Pressure30.33 inHg
Wind4.8 mph SE
Humidity29%
Visibility—
Dew point15°
Sat, 0753° / 30°0Partly cloudy
53 °Partly cloudy

West Derry, Saturday, 7 November

Partly cloudy. High 53°, low 30°.

Pressure30.15 inHg
Wind6 mph SW
Humidity38%
Visibility—
Dew point25°
Sun, 0849° / 40°0.63Rain
49 °Rain

West Derry, Sunday, 8 November

Rain. High 49°, low 40°.

Pressure29.91 inHg
Wind13.4 mph W
Humidity93%
Visibility—
Dew point44°
Mon, 0945° / 30°0.07Snow
45 °Snow

West Derry, Monday, 9 November

Snow. High 45°, low 30°.

Pressure30.21 inHg
Wind14 mph NW
Humidity60%
Visibility—
Dew point29°

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 West 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 West 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.