Weather in Perth, IN
Perth, Saturday, 10 October, 19:55
Overcast. Feels like 65°. High 73°, low 56°.
Monthly outlook for Perth, IN: average high 64.2°, average low 47.6°. That is 0.1° above the climate normal for October. Precipitation is expected on 5 days (about 2.2 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 13 October (86.3°), the coolest 19 October (30.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 10 October – 19 October | 67° | 65.1° | +1.1° |
| 20 October – 29 October | 59.4° | 61.1° | -0.9° |
| 30 October – 8 November | at normal | 57.3° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Center Point (13 mi).
0.02
Perth, Sunday, 11 October
Light rain. High 75°, low 52°.
0
Perth, Monday, 12 October
Mostly clear. High 84°, low 52°.
0
Perth, Tuesday, 13 October
Clear. High 86°, low 67°.
0.42Perth, Wednesday, 14 October
Rain. High 80°, low 69°.
0.79Perth, Thursday, 15 October
Rain. High 65°, low 63°.
0.53Perth, Friday, 16 October
Rain. High 62°, low 46°.
0.02
Perth, Saturday, 17 October
Snow. High 42°, low 34°.
0Perth, Sunday, 18 October
Mostly clear. High 49°, low 32°.
0
Perth, Monday, 19 October
Partly cloudy. High 54°, low 31°.
0Perth, Tuesday, 20 October
Clear. High 60°, low 34°.
0Perth, Wednesday, 21 October
Mostly clear. High 66°, low 40°.
0Perth, Thursday, 22 October
Mostly clear. High 69°, low 44°.
0.24Perth, Friday, 23 October
Light rain. High 53°, low 48°.
0.19Perth, Saturday, 24 October
Light rain. High 52°, low 44°.
0.03Perth, Sunday, 25 October
Light rain. High 56°, low 50°.
0.11Perth, Monday, 26 October
Climate normal for this date — 60-year average.
0.11Perth, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.09Perth, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.09Perth, Thursday, 29 October
Climate normal for this date — 60-year average.
0.07Perth, Friday, 30 October
Climate normal for this date — 60-year average.
0.13
Perth, Saturday, 31 October
Climate normal for this date — 60-year average.
0.17Perth, Sunday, 1 November
Climate normal for this date — 60-year average.
0.09Perth, Monday, 2 November
Climate normal for this date — 60-year average.
0.06Perth, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.09Perth, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.11Perth, Thursday, 5 November
Climate normal for this date — 60-year average.
0.08Perth, Friday, 6 November
Climate normal for this date — 60-year average.
0.14Perth, Saturday, 7 November
Climate normal for this date — 60-year average.
0.03Perth, Sunday, 8 November
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 Perth, IN 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 Perth, IN 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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