Weather in Old Peru, IA
Old Peru, Wednesday, 21 October, 11:00
Clear. Feels like 62°. High 74°, low 51°.
Monthly outlook for Old Peru, IA: average high 62.4°, average low 49.2°. That is 2.9° above the climate normal for October. Precipitation is expected on 6 days (about 2.6 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 25 October (74.9°), the coolest 30 October (38.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 67.9° | 59° | +4.9° |
| 31 October – 9 November | 53.2° | 53.6° | -0.2° |
| 10 November – 19 November | at normal | 48.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Thayer (15 mi).
0Old Peru, Thursday, 22 October
Clear. High 75°, low 50°.
0Old Peru, Friday, 23 October
Clear. High 73°, low 54°.
0Old Peru, Saturday, 24 October
Clear. High 74°, low 58°.
0
Old Peru, Sunday, 25 October
Partly cloudy. High 75°, low 56°.
0.09
Old Peru, Monday, 26 October
Light rain. High 67°, low 57°.
0
Old Peru, Tuesday, 27 October
Overcast. High 59°, low 50°.
0Old Peru, Wednesday, 28 October
Light rain. High 72°, low 50°.
0Old Peru, Thursday, 29 October
Overcast. High 56°, low 43°.
0Old Peru, Friday, 30 October
Overcast. High 54°, low 39°.
1.2Old Peru, Saturday, 31 October
Heavy rain. High 61°, low 53°.
0.81Old Peru, Sunday, 1 November
Rain. High 60°, low 50°.
0.13Old Peru, Monday, 2 November
Light rain. High 50°, low 47°.
0Old Peru, Tuesday, 3 November
Overcast. High 55°, low 44°.
0.33Old Peru, Wednesday, 4 November
Light rain. High 47°, low 42°.
0.07Old Peru, Thursday, 5 November
Light rain. High 47°, low 43°.
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.
0.11Old Peru, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.05Old Peru, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Old Peru, Thursday, 19 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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