As of 10:41 CDT

Weather in Old Peru, IA

56°Current weather

Old Peru, Sunday, 18 October, 10:41

Clear. Feels like 55°. High 64°, low 41°.

Pressure30.30 inHg
Wind13.5 mph S
Humidity61%
Visibility6.2 mi
Dew point43°

Monthly outlook for Old Peru, IA: average high 63.1°, average low 46.4°. That is 2.6° 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 24 October (72°), the coolest 1 November (31.8°).

63.1°/46.4°
Average high / low
+2.6°
Above normal
3 / 4
Wet days / normal
0.8 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
18 October – 27 October65.7°60°+3.1°
28 October – 6 November58.9°54.9°+2.2°
7 November – 16 Novemberat normal49.9°—

October records over 66 years

92.1°5 October 1963All-time high
10°29 October 1980All-time low

Climate normals and records are computed from the nearest reference point — Thayer (15 mi).

Mon, 1964° / 44°0Clear
64 °Clear

Old Peru, Monday, 19 October

Clear. High 64°, low 44°.

Pressure30.33 inHg
Wind7.8 mph S
Humidity61%
Visibility6.2 mi
Dew point46°
Tue, 2067° / 44°0Clear
67 °Clear

Old Peru, Tuesday, 20 October

Clear. High 67°, low 44°.

Pressure30.33 inHg
Wind7.4 mph S
Humidity55%
Visibility6.2 mi
Dew point47°
Wed, 2170° / 50°0Clear
70 °Clear

Old Peru, Wednesday, 21 October

Clear. High 70°, low 50°.

Pressure30.24 inHg
Wind5.5 mph SW
Humidity61%
Visibility6.2 mi
Dew point53°
Thu, 2270° / 49°0Clear
70 °Clear

Old Peru, Thursday, 22 October

Clear. High 70°, low 49°.

Pressure30.27 inHg
Wind7 mph SE
Humidity51%
Visibility—
Dew point47°
Fri, 2370° / 53°0Overcast
70 °Overcast

Old Peru, Friday, 23 October

Overcast. High 70°, low 53°.

Pressure30.18 inHg
Wind14.1 mph SE
Humidity55%
Visibility—
Dew point49°
Sat, 2472° / 54°0.25Rain
72 °Rain

Old Peru, Saturday, 24 October

Rain. High 72°, low 54°.

Pressure30.12 inHg
Wind16.2 mph S
Humidity53%
Visibility—
Dew point52°
Sun, 2554° / 47°0Overcast
54 °Overcast

Old Peru, Sunday, 25 October

Overcast. High 54°, low 47°.

Pressure30.47 inHg
Wind9.1 mph NE
Humidity50%
Visibility—
Dew point34°
Mon, 2662° / 46°0.34Rain
62 °Rain

Old Peru, Monday, 26 October

Rain. High 62°, low 46°.

Pressure30.24 inHg
Wind6.7 mph SE
Humidity88%
Visibility—
Dew point49°
Tue, 2764° / 54°0.02Light rain
64 °Light rain

Old Peru, Tuesday, 27 October

Light rain. High 64°, low 54°.

Pressure30.15 inHg
Wind10.7 mph SE
Humidity54%
Visibility—
Dew point46°
Wed, 2863° / 51°0.15Light rain
63 °Light rain

Old Peru, Wednesday, 28 October

Light rain. High 63°, low 51°.

Pressure29.83 inHg
Wind13.9 mph S
Humidity92%
Visibility—
Dew point55°
Thu, 2966° / 52°0Clear
66 °Clear

Old Peru, Thursday, 29 October

Clear. High 66°, low 52°.

Pressure29.80 inHg
Wind7.6 mph SW
Humidity44%
Visibility—
Dew point40°
Fri, 3072° / 51°0Overcast
72 °Overcast

Old Peru, Friday, 30 October

Overcast. High 72°, low 51°.

Pressure29.47 inHg
Wind19 mph S
Humidity68%
Visibility—
Dew point56°
Sat, 3145° / 38°0Overcast
45 °Overcast

Old Peru, Saturday, 31 October

Overcast. High 45°, low 38°.

Pressure29.71 inHg
Wind25.6 mph W
Humidity55%
Visibility—
Dew point28°
Sun, 0150° / 32°0Clear
50 °Clear

Old Peru, Sunday, 1 November

Clear. High 50°, low 32°.

Pressure30.27 inHg
Wind15.9 mph W
Humidity46%
Visibility—
Dew point25°
Mon, 0259° / 38°0Overcast
59 °Overcast

Old Peru, Monday, 2 November

Overcast. High 59°, low 38°.

Pressure30.21 inHg
Wind19.8 mph S
Humidity42%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0354° / 39°0.09Climate normal
54 °Climate normal

Old Peru, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high54°
Average low39°
Average precipitation0.09 in
Chance of precipitation27%
Record high74° (1978)
Record low9° (1991)
Wed, 0453° / 38°0.1Climate normal
53 °Climate normal

Old Peru, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high53°
Average low38°
Average precipitation0.1 in
Chance of precipitation22%
Record high71° (1978)
Record low9° (1991)
Thu, 0553° / 38°0.05Climate normal
53 °Climate normal

Old Peru, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high53°
Average low38°
Average precipitation0.05 in
Chance of precipitation22%
Record high73° (2015)
Record low20° (1967)
Fri, 0653° / 37°0.07Climate normal
53 °Climate normal

Old Peru, Friday, 6 November

Climate normal for this date — 60-year average.

Average high53°
Average low37°
Average precipitation0.07 in
Chance of precipitation17%
Record high71° (1980)
Record low16° (1991)
Sat, 0753° / 37°0.02Climate normal
53 °Climate normal

Old Peru, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high53°
Average low37°
Average precipitation0.02 in
Chance of precipitation8%
Record high72° (1966)
Record low-2° (1991)
Sun, 0853° / 37°0.03Climate normal
53 °Climate normal

Old Peru, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high53°
Average low37°
Average precipitation0.03 in
Chance of precipitation20%
Record high75° (1999)
Record low-8° (1991)
Mon, 0953° / 37°0.1Climate normal
53 °Climate normal

Old Peru, Monday, 9 November

Climate normal for this date — 60-year average.

Average high53°
Average low37°
Average precipitation0.1 in
Chance of precipitation32%
Record high72° (1999)
Record low14° (1991)
Tue, 1050° / 34°0.09Climate normal
50 °Climate normal

Old Peru, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high50°
Average low34°
Average precipitation0.09 in
Chance of precipitation22%
Record high74° (2012)
Record low12° (2018)
Wed, 1148° / 32°0.08Climate normal
48 °Climate normal

Old Peru, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high48°
Average low32°
Average precipitation0.08 in
Chance of precipitation22%
Record high73° (1964)
Record low10° (1986)
Thu, 1247° / 32°0.06Climate normal
47 °Climate normal

Old Peru, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high47°
Average low32°
Average precipitation0.06 in
Chance of precipitation25%
Record high68° (1999)
Record low3° (2019)
Fri, 1348° / 32°0.07Climate normal
48 °Climate normal

Old Peru, Friday, 13 November

Climate normal for this date — 60-year average.

Average high48°
Average low32°
Average precipitation0.07 in
Chance of precipitation20%
Record high75° (1999)
Record low5° (1986)
Sat, 1449° / 34°0.03Climate normal
49 °Climate normal

Old Peru, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high49°
Average low34°
Average precipitation0.03 in
Chance of precipitation23%
Record high72° (2025)
Record low13° (2014)
Sun, 1549° / 34°0.05Climate normal
49 °Climate normal

Old Peru, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high49°
Average low34°
Average precipitation0.05 in
Chance of precipitation18%
Record high70° (2001)
Record low0° (1972)
Mon, 1649° / 33°0.04Climate normal
49 °Climate normal

Old Peru, Monday, 16 November

Climate normal for this date — 60-year average.

Average high49°
Average low33°
Average precipitation0.04 in
Chance of precipitation12%
Record high70° (2001)
Record low15° (1997)

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.