Weather in Santiago, PA
Santiago, Sunday, 9 August, 03:02
Clear. Feels like 69°. High 85°, low 68°.
Monthly outlook for Santiago, PA: average high 83°, average low 61.3°. That is 2° above the climate normal for August. Precipitation is expected on 5 days (about 1.8 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 21 August (94.9°), the coolest 16 August (51.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 78.2° | 79.8° | -0.8° |
| 19 August – 28 August | 90.9° | 79.2° | +6.5° |
| 29 August – 7 September | at normal | 77.7° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Mount Lebanon (12 mi).
0.57
Santiago, Monday, 10 August
Heavy rain. High 81°, low 67°.
0.94Santiago, Tuesday, 11 August
Heavy rain. High 84°, low 62°.
0.04Santiago, Wednesday, 12 August
Light rain. High 81°, low 64°.
0.07Santiago, Thursday, 13 August
Light rain. High 77°, low 57°.
0
Santiago, Friday, 14 August
Overcast. High 74°, low 53°.
0Santiago, Saturday, 15 August
Overcast. High 72°, low 52°.
0.01Santiago, Sunday, 16 August
Light rain. High 69°, low 52°.
0
Santiago, Monday, 17 August
Partly cloudy. High 78°, low 52°.
0
Santiago, Tuesday, 18 August
Clear. High 80°, low 58°.
0Santiago, Wednesday, 19 August
Partly cloudy. High 84°, low 58°.
0
Santiago, Thursday, 20 August
Mostly clear. High 88°, low 63°.
0Santiago, Friday, 21 August
Light rain. High 95°, low 72°.
0Santiago, Saturday, 22 August
Mostly clear. High 90°, low 63°.
0Santiago, Sunday, 23 August
Mostly clear. High 94°, low 67°.
0.17Santiago, Monday, 24 August
Light rain. High 94°, low 72°.
0.09Santiago, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.09Santiago, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.13
Santiago, Thursday, 27 August
Climate normal for this date — 60-year average.
0.19Santiago, Friday, 28 August
Climate normal for this date — 60-year average.
0.13Santiago, Saturday, 29 August
Climate normal for this date — 60-year average.
0.14Santiago, Sunday, 30 August
Climate normal for this date — 60-year average.
0.16Santiago, Monday, 31 August
Climate normal for this date — 60-year average.
0.1Santiago, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.13Santiago, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.1Santiago, Thursday, 3 September
Climate normal for this date — 60-year average.
0.09Santiago, Friday, 4 September
Climate normal for this date — 60-year average.
0.11Santiago, Saturday, 5 September
Climate normal for this date — 60-year average.
0.14Santiago, Sunday, 6 September
Climate normal for this date — 60-year average.
0.11Santiago, Monday, 7 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 Santiago, 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 Santiago, 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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