Weather in Hershey Mill, PA
Hershey Mill, Saturday, 8 August, 16:35
Overcast. Feels like 91°. High 85°, low 70°.
Monthly outlook for Hershey Mill, PA: average high 78.9°, average low 64.8°. That is 1.8° below the climate normal for August. Precipitation is expected on 6 days (about 1.9 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 9 August (86.4°), the coolest 16 August (56.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 81° | 82.9° | -1° |
| 18 August – 27 August | 75.4° | 81.3° | -3.2° |
| 28 August – 6 September | at normal | 80.2° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Bryn Mawr (13 mi).
0.01
Hershey Mill, Sunday, 9 August
Light rain. High 86°, low 69°.
0.07Hershey Mill, Monday, 10 August
Rain. High 85°, low 70°.
0.11Hershey Mill, Tuesday, 11 August
Rain. High 84°, low 70°.
0.73Hershey Mill, Wednesday, 12 August
Heavy rain. High 79°, low 70°.
0
Hershey Mill, Thursday, 13 August
Partly cloudy. High 84°, low 68°.
0.01Hershey Mill, Friday, 14 August
Light rain. High 75°, low 63°.
0
Hershey Mill, Saturday, 15 August
Clear. High 75°, low 57°.
0Hershey Mill, Sunday, 16 August
Clear. High 78°, low 56°.
0Hershey Mill, Monday, 17 August
Overcast. High 79°, low 61°.
0.2Hershey Mill, Tuesday, 18 August
Light rain. High 77°, low 68°.
0.02Hershey Mill, Wednesday, 19 August
Light rain. High 82°, low 67°.
0Hershey Mill, Thursday, 20 August
Overcast. High 68°, low 61°.
0.51Hershey Mill, Friday, 21 August
Rain. High 71°, low 63°.
0.02Hershey Mill, Saturday, 22 August
Light rain. High 81°, low 66°.
0Hershey Mill, Sunday, 23 August
Clear. High 72°, low 58°.
0.06
Hershey Mill, Monday, 24 August
Climate normal for this date — 60-year average.
0.06Hershey Mill, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.06Hershey Mill, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.18
Hershey Mill, Thursday, 27 August
Climate normal for this date — 60-year average.
0.24Hershey Mill, Friday, 28 August
Climate normal for this date — 60-year average.
0.11Hershey Mill, Saturday, 29 August
Climate normal for this date — 60-year average.
0.06Hershey Mill, Sunday, 30 August
Climate normal for this date — 60-year average.
0.07Hershey Mill, Monday, 31 August
Climate normal for this date — 60-year average.
0.14Hershey Mill, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.11Hershey Mill, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.15Hershey Mill, Thursday, 3 September
Climate normal for this date — 60-year average.
0.09Hershey Mill, Friday, 4 September
Climate normal for this date — 60-year average.
0.08Hershey Mill, Saturday, 5 September
Climate normal for this date — 60-year average.
0.21Hershey Mill, 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 Hershey Mill, 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 Hershey Mill, 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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