Weather in Old Peru, IA
Old Peru, Tuesday, 20 October, 18:01
Clear. Feels like 65°. High 69°, low 42°.
Monthly outlook for Old Peru, IA: average high 59.6°, average low 43.4°. That is 1.1° above the climate normal for October. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 25 October (74.4°), the coolest 28 October (31.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 63.2° | 59.4° | +2.1° |
| 30 October – 8 November | 53.7° | 54° | -0.2° |
| 9 November – 18 November | at normal | 49.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Thayer (15 mi).
0Old Peru, Wednesday, 21 October
Clear. High 73°, low 49°.
0Old Peru, Thursday, 22 October
Clear. High 73°, low 49°.
0
Old Peru, Friday, 23 October
Overcast. High 73°, low 54°.
0Old Peru, Saturday, 24 October
Clear. High 74°, low 58°.
0
Old Peru, Sunday, 25 October
Partly cloudy. High 74°, low 57°.
0.44
Old Peru, Monday, 26 October
Rain. High 61°, low 40°.
0.06Old Peru, Tuesday, 27 October
Light rain. High 41°, low 38°.
0
Old Peru, Wednesday, 28 October
Mostly clear. High 47°, low 31°.
0Old Peru, Thursday, 29 October
Clear. High 47°, low 35°.
0Old Peru, Friday, 30 October
Overcast. High 52°, low 32°.
0.28Old Peru, Saturday, 31 October
Light rain. High 52°, low 45°.
0Old Peru, Sunday, 1 November
Light rain. High 61°, low 48°.
0Old Peru, Monday, 2 November
Clear. High 51°, low 40°.
0Old Peru, Tuesday, 3 November
Clear. High 54°, low 36°.
0Old Peru, Wednesday, 4 November
Light rain. High 53°, low 40°.
0.05Old Peru, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Old 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.
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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