Grantham, PA 14 Day Weather - 17027 WeatherWorld.com
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Grantham, PA Weather Forecast


Grantham, PA Weather Forecast Dated: 444 PM Tue Sep 15 2026
Expect a mild stretch with more clouds than sun and frequent chances of rain over the coming period. generally humid conditions and no major pressure swings will dominate.
Tuesday, September 15, 2026
Mid-Morning
57°F 14°C
Sunny
Mid-Afternoon
75°F 24°C
Sunny
Early-Evening
69°F 21°C
Cloudy
Pleasant near 75°F 24°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure.
Wednesday, September 16, 2026
Mid-Morning
64°F 18°C
Sunny
Mid-Afternoon
83°F 28°C
Partly Cloudy
Early-Evening
78°F 26°C
Cloudy
Balmy with temperatures reaching 83°F 28°C, sunny in the morning, cloudy in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure.
Thursday, September 17, 2026
Mid-Morning
66°F 19°C
Partly Cloudy
Mid-Afternoon
86°F 30°C
Overcast
Early-Evening
78°F 26°C
Scattered Showers
Quite warm around 86°F 30°C, locally heavy downpours at times, with steady humidity and barometric pressure falling.
Friday, September 18, 2026
Mid-Morning
70°F 21°C
Partly Cloudy
Mid-Afternoon
80°F 26°C
Overcast
Early-Evening
71°F 22°C
Sunny
Warm temperatures up to 80°F 26°C, partly cloudy in the morning, overcast in the afternoon, and sunny this evening, with lower humidity and steady pressure. Winds turning from the N to the NNE at 11 mph 17 km/h.
Saturday, September 19, 2026
Mid-Morning
59°F 15°C
Sunny
Mid-Afternoon
72°F 22°C
Cloudy
Early-Evening
65°F 18°C
Overcast
Mild with a high of 72°F 22°C, sunny in the morning, cloudy in the afternoon, and overcast this evening, with increasing humidity and barometric pressure falling. Winds blowing from the SSE at 8 mph 13 km/h.
Sunday, September 20, 2026
Mid-Morning
67°F 19°C
Scattered Showers
Mid-Afternoon
63°F 17°C
Scattered Showers
Early-Evening
61°F 16°C
Scattered Showers
Mildly cool near 63°F 17°C, locally heavy downpours at times, with steady humidity and steady pressure.
Monday, September 21, 2026
Mid-Morning
61°F 16°C
Scattered Showers
Mid-Afternoon
72°F 22°C
Overcast
Early-Evening
67°F 19°C
Scattered Showers
Comfortable with temperatures reaching 72°F 22°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure.
Tuesday, September 22, 2026
Mid-Morning
61°F 16°C
Light Fog
Mid-Afternoon
65°F 18°C
Overcast
Early-Evening
66°F 19°C
Scattered Showers
Cool with a high near 65°F 18°C, scattered downpours possible, with steady humidity and steady pressure.
Wednesday, September 23, 2026
Mid-Morning
64°F 18°C
Fog
Mid-Afternoon
65°F 19°C
Light Showers
Early-Evening
62°F 17°C
Scattered Showers
Refreshing around 65°F 19°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds moving from the E to the ENE at 10 mph 16 km/h. Gusts up to 23 mph 38 km/h.
Thursday, September 24, 2026
Mid-Morning
62°F 17°C
Light Showers
Mid-Afternoon
63°F 17°C
Fog
Early-Evening
66°F 19°C
Fog
Mildly cool near 63°F 17°C, early showers breaking for a drier afternoon, with steady humidity and barometric pressure falling. Winds swinging from the ENE to the E at 5 mph 7 km/h.
Friday, September 25, 2026
Mid-Morning
70°F 21°C
Scattered Showers
Mid-Afternoon
71°F 22°C
Light Showers
Early-Evening
69°F 21°C
Light Showers
Pleasant near 71°F 22°C, scattered downpours possible, with steady humidity and barometric pressure falling. Winds shifting from the SSE to the SE at 16 mph 26 km/h. Gusts up to 36 mph 57 km/h.
Saturday, September 26, 2026
Mid-Morning
68°F 20°C
Overcast
Mid-Afternoon
74°F 23°C
Overcast
Early-Evening
70°F 21°C
Overcast
Comfortable with temperatures reaching 74°F 23°C, overcast throughout the day, with lower humidity and steady pressure. Winds turning from the WSW to the W at 8 mph 12 km/h.
Sunday, September 27, 2026
Mid-Morning
58°F 14°C
Overcast
Mid-Afternoon
65°F 18°C
Overcast
Early-Evening
61°F 16°C
Overcast
Refreshing around 65°F 18°C, overcast throughout the day, with lower humidity and steady pressure. Winds out of the NNW at 11 mph 18 km/h.
Monday, September 28, 2026
Mid-Morning
52°F 11°C
Sunny
Mid-Afternoon
62°F 17°C
Sunny
Early-Evening
57°F 14°C
Sunny
Mildly cool near 62°F 17°C, sunny throughout the day, with steady humidity and steady pressure. Winds moving from the NNW to the N at 10 mph 16 km/h. Gusts up to 22 mph 35 km/h.
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