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As of 15:51 EDT

Weather in West Derry, PA

67°Current weather

West Derry, Tuesday, 20 October, 15:51

Clear. Feels like 65°. High 67°, low 36°.

Pressure30.30 inHg
Wind6.9 mph N
Humidity44%
Visibility6.2 mi
Dew point44°
Wed, 2165° / 32°0Clear
65 °Clear

West Derry, Wednesday, 21 October

Clear. High 65°, low 32°.

Pressure30.27 inHg
Wind1.2 mph NW
Humidity54%
Visibility6.2 mi
Dew point40°
Thu, 2263° / 34°0Clear
63 °Clear

West Derry, Thursday, 22 October

Clear. High 63°, low 34°.

Pressure30.21 inHg
Wind3.5 mph NW
Humidity70%
Visibility6.2 mi
Dew point46°
Fri, 2356° / 37°0Clear
56 °Clear

West Derry, Friday, 23 October

Clear. High 56°, low 37°.

Pressure30.42 inHg
Wind4.9 mph NE
Humidity55%
Visibility6.2 mi
Dew point36°
Sat, 2460° / 31°0Clear
60 °Clear

West Derry, Saturday, 24 October

Clear. High 60°, low 31°.

Pressure30.50 inHg
Wind1 mph SE
Humidity51%
Visibility6.2 mi
Dew point36°
Sun, 2563° / 34°0Clear
63 °Clear

West Derry, Sunday, 25 October

Clear. High 63°, low 34°.

Pressure30.45 inHg
Wind4.7 mph SW
Humidity37%
Visibility—
Dew point33°
Mon, 2665° / 46°0Overcast
65 °Overcast

West Derry, Monday, 26 October

Overcast. High 65°, low 46°.

Pressure30.24 inHg
Wind6.1 mph SW
Humidity53%
Visibility—
Dew point45°
Tue, 2761° / 41°0.32Rain
61 °Rain

West Derry, Tuesday, 27 October

Rain. High 61°, low 41°.

Pressure30.03 inHg
Wind11.8 mph W
Humidity60%
Visibility—
Dew point46°
Wed, 2843° / 33°0.02Light snow
43 °Light snow

West Derry, Wednesday, 28 October

Light snow. High 43°, low 33°.

Pressure30.36 inHg
Wind10.5 mph NW
Humidity54%
Visibility—
Dew point26°
Thu, 2950° / 30°0Clear
50 °Clear

West Derry, Thursday, 29 October

Clear. High 50°, low 30°.

Pressure30.15 inHg
Wind11 mph SW
Humidity41%
Visibility—
Dew point25°
Fri, 3042° / 32°0.04Snow
42 °Snow

West Derry, Friday, 30 October

Snow. High 42°, low 32°.

Pressure30.09 inHg
Wind12.3 mph NW
Humidity66%
Visibility—
Dew point31°
Sat, 3146° / 27°0Clear
46 °Clear

West Derry, Saturday, 31 October

Clear. High 46°, low 27°.

Pressure30.30 inHg
Wind9.6 mph W
Humidity46%
Visibility—
Dew point24°
Sun, 0149° / 34°0Overcast
49 °Overcast

West Derry, Sunday, 1 November

Overcast. High 49°, low 34°.

Pressure30.12 inHg
Wind11.7 mph SW
Humidity46%
Visibility—
Dew point27°
Mon, 0251° / 37°0Overcast
51 °Overcast

West Derry, Monday, 2 November

Overcast. High 51°, low 37°.

Pressure30.36 inHg
Wind9.1 mph SW
Humidity63%
Visibility—
Dew point37°
Tue, 0359° / 38°0Mostly clear
59 °Mostly clear

West Derry, Tuesday, 3 November

Mostly clear. High 59°, low 38°.

Pressure30.39 inHg
Wind13 mph SE
Humidity49%
Visibility—
Dew point37°
Wed, 0454° / 45°0.01Light rain
54 °Light rain

West Derry, Wednesday, 4 November

Light rain. High 54°, low 45°.

Pressure30.30 inHg
Wind13.9 mph SE
Humidity74%
Visibility—
Dew point45°

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.