Weather in Williams Grove, PA
Williams Grove, Saturday, 8 August, 23:17
Overcast. Feels like 76°. High 84°, low 70°.
Monthly outlook for Williams Grove, PA: average high 81.2°, average low 63.7°. That is 0.5° below the climate normal for August. Precipitation is expected on 5 days (about 1.6 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 10 August (89.5°), the coolest 22 August (53.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 82.8° | 83° | -0.1° |
| 18 August – 27 August | 78.6° | 81.5° | -1.6° |
| 28 August – 6 September | at normal | 80.4° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Messiah College (3 mi).
0
Williams Grove, Sunday, 9 August
Clear. High 86°, low 71°.
0.14
Williams Grove, Monday, 10 August
Rain. High 90°, low 71°.
0.41Williams Grove, Tuesday, 11 August
Rain. High 88°, low 67°.
0.02Williams Grove, Wednesday, 12 August
Light rain. High 84°, low 69°.
0Williams Grove, Thursday, 13 August
Light rain. High 81°, low 65°.
0Williams Grove, Friday, 14 August
Clear. High 80°, low 57°.
0Williams Grove, Saturday, 15 August
Clear. High 80°, low 58°.
0Williams Grove, Sunday, 16 August
Overcast. High 81°, low 57°.
0.19Williams Grove, Monday, 17 August
Rain. High 75°, low 63°.
0.03Williams Grove, Tuesday, 18 August
Light rain. High 69°, low 65°.
0.28Williams Grove, Wednesday, 19 August
Rain. High 84°, low 66°.
0.46Williams Grove, Thursday, 20 August
Rain. High 75°, low 65°.
0Williams Grove, Friday, 21 August
Clear. High 79°, low 59°.
0
Williams Grove, Saturday, 22 August
Partly cloudy. High 80°, low 53°.
0.01Williams Grove, Sunday, 23 August
Light rain. High 85°, low 64°.
0.07Williams Grove, Monday, 24 August
Climate normal for this date — 60-year average.
0.05Williams Grove, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.05Williams Grove, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.15
Williams Grove, Thursday, 27 August
Climate normal for this date — 60-year average.
0.17Williams Grove, Friday, 28 August
Climate normal for this date — 60-year average.
0.09Williams Grove, Saturday, 29 August
Climate normal for this date — 60-year average.
0.06Williams Grove, Sunday, 30 August
Climate normal for this date — 60-year average.
0.08Williams Grove, Monday, 31 August
Climate normal for this date — 60-year average.
0.12Williams Grove, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.12Williams Grove, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.06Williams Grove, Thursday, 3 September
Climate normal for this date — 60-year average.
0.11Williams Grove, Friday, 4 September
Climate normal for this date — 60-year average.
0.07Williams Grove, Saturday, 5 September
Climate normal for this date — 60-year average.
0.18Williams Grove, Sunday, 6 September
Climate normal for this date — 60-year average.
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 Williams Grove, 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 Williams Grove, 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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