Weather in Grand Valley, PA
Grand Valley, Sunday, 9 August, 08:58
Clear. Feels like 67°. High 83°, low 65°.
0.28
Grand Valley, Monday, 10 August
Rain. High 82°, low 65°.
0.11Grand Valley, Tuesday, 11 August
Light rain. High 81°, low 61°.
0.15Grand Valley, Wednesday, 12 August
Light rain. High 73°, low 59°.
0.01Grand Valley, Thursday, 13 August
Light rain. High 72°, low 56°.
0
Grand Valley, Friday, 14 August
Partly cloudy. High 71°, low 51°.
0
Grand Valley, Saturday, 15 August
Overcast. High 67°, low 48°.
0Grand Valley, Sunday, 16 August
Light rain. High 61°, low 48°.
0Grand Valley, Monday, 17 August
Partly cloudy. High 74°, low 57°.
0Grand Valley, Tuesday, 18 August
Overcast. High 78°, low 53°.
0.23Grand Valley, Wednesday, 19 August
Rain. High 82°, low 59°.
0.02Grand Valley, Thursday, 20 August
Light rain. High 69°, low 51°.
0Grand Valley, Friday, 21 August
Partly cloudy. High 74°, low 48°.
1.45Grand Valley, Saturday, 22 August
Heavy rain. High 80°, low 53°.
0.08Grand Valley, Sunday, 23 August
Light rain. High 67°, low 50°.
0
Grand Valley, Monday, 24 August
Mostly clear. High 71°, low 46°.
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 Grand Valley, 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 Grand Valley, 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.
Sun and moon today
Weather history
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