Weather in Old Peru, IA
Old Peru, Sunday, 18 October, 16:45
Clear. Feels like 64°. High 66°, low 40°.
Monthly outlook for Old Peru, IA: average high 62.9°, average low 48.8°. That is 2.4° above the climate normal for October. Precipitation is expected on 5 days (about 1.7 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 24 October (74.2°), the coolest 2 November (33.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 66.5° | 60° | +3.6° |
| 28 October – 6 November | 56.7° | 54.9° | +1° |
| 7 November – 16 November | at normal | 49.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Thayer (15 mi).
0
Old Peru, Monday, 19 October
Overcast. High 66°, low 43°.
0Old Peru, Tuesday, 20 October
Clear. High 67°, low 43°.
0Old Peru, Wednesday, 21 October
Clear. High 70°, low 49°.
0Old Peru, Thursday, 22 October
Clear. High 70°, low 50°.
0Old Peru, Friday, 23 October
Overcast. High 70°, low 54°.
0.01
Old Peru, Saturday, 24 October
Light rain. High 74°, low 57°.
0Old Peru, Sunday, 25 October
Light rain. High 59°, low 54°.
0Old Peru, Monday, 26 October
Overcast. High 64°, low 52°.
0.07Old Peru, Tuesday, 27 October
Light rain. High 59°, low 55°.
0.13Old Peru, Wednesday, 28 October
Light rain. High 60°, low 55°.
0.13Old Peru, Thursday, 29 October
Light rain. High 63°, low 56°.
0.02Old Peru, Friday, 30 October
Light rain. High 61°, low 47°.
0.01Old Peru, Saturday, 31 October
Light rain. High 57°, low 44°.
1.02Old Peru, Sunday, 1 November
Rain. High 54°, low 49°.
0.34Old Peru, Monday, 2 November
Rain. High 45°, low 34°.
0.09
Old Peru, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.1Old Peru, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.05Old Peru, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07
Old Peru, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Old Peru, Saturday, 7 November
Climate normal for this date — 60-year average.
0.03Old Peru, Sunday, 8 November
Climate normal for this date — 60-year average.
0.1Old Peru, Monday, 9 November
Climate normal for this date — 60-year average.
0.09Old Peru, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.08Old Peru, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Old Peru, Thursday, 12 November
Climate normal for this date — 60-year average.
0.07Old Peru, Friday, 13 November
Climate normal for this date — 60-year average.
0.03Old Peru, Saturday, 14 November
Climate normal for this date — 60-year average.
0.05Old Peru, Sunday, 15 November
Climate normal for this date — 60-year average.
0.04Old Peru, Monday, 16 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 Old Peru, IA 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 Old Peru, IA 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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