Monthly outlook for Peterson, IA: average high 66.2°, average low 50.2°. That is 4.1° above the climate normal for October. Precipitation is expected on 4 days (about 0.9 inches), against a normal of 4 days and 1.2 inches. The warmest day looks like 12 October (88.1°), the coolest 17 October (33.3°).
66.2°/50.2°
Average high / low
+4.1°
Above normal
4 / 4
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
66.3°
59.9°
+3.5°
21 October – 30 October
66.2°
56°
+5.6°
31 October – 9 November
at normal
50.3°
—
October records over 66 years
89.6°1 October 2023All-time high
14.5°27 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Sioux Rapids (10 mi).
Mon, 1288° / 62°0
88 °
Peterson, Monday, 12 October
Partly cloudy. High 88°, low 62°.
Pressure29.65 inHg
Wind12 mph S
Humidity54%
Visibility6.2 mi
Dew point62°
Tue, 1366° / 52°0
66 °
Peterson, Tuesday, 13 October
Clear. High 66°, low 52°.
Pressure29.94 inHg
Wind8.2 mph N
Humidity62%
Visibility6.2 mi
Dew point49°
Wed, 1462° / 47°0
62 °
Peterson, Wednesday, 14 October
Overcast. High 62°, low 47°.
Pressure30.18 inHg
Wind8.3 mph NE
Humidity59%
Visibility6.2 mi
Dew point43°
Thu, 1555° / 51°0.72
55 °
Peterson, Thursday, 15 October
Rain. High 55°, low 51°.
Pressure30.09 inHg
Wind9.1 mph NE
Humidity96%
Visibility1.7 mi
Dew point53°
Fri, 1657° / 44°0
57 °
Peterson, Friday, 16 October
Clear. High 57°, low 44°.
Pressure30.62 inHg
Wind19.1 mph N
Humidity52%
Visibility—
Dew point35°
Sat, 1751° / 33°0
51 °
Peterson, Saturday, 17 October
Overcast. High 51°, low 33°.
Pressure30.56 inHg
Wind14.7 mph S
Humidity32%
Visibility—
Dew point17°
Sun, 1862° / 43°0
62 °
Peterson, Sunday, 18 October
Overcast. High 62°, low 43°.
Pressure30.06 inHg
Wind23 mph SW
Humidity33%
Visibility—
Dew point26°
Mon, 1968° / 46°0
68 °
Peterson, Monday, 19 October
Clear. High 68°, low 46°.
Pressure30.18 inHg
Wind10 mph SW
Humidity37%
Visibility—
Dew point36°
Tue, 2068° / 48°0
68 °
Peterson, Tuesday, 20 October
Mostly clear. High 68°, low 48°.
Pressure30.03 inHg
Wind18.9 mph S
Humidity44%
Visibility—
Dew point40°
Wed, 2172° / 57°0.04
72 °
Peterson, Wednesday, 21 October
Light rain. High 72°, low 57°.
Pressure29.97 inHg
Wind17.2 mph S
Humidity63%
Visibility—
Dew point52°
Thu, 2271° / 53°0.09
71 °
Peterson, Thursday, 22 October
Light rain. High 71°, low 53°.
Pressure30.12 inHg
Wind9.7 mph SE
Humidity49%
Visibility—
Dew point47°
Fri, 2367° / 59°0.06
67 °
Peterson, Friday, 23 October
Light rain. High 67°, low 59°.
Pressure30.12 inHg
Wind12.2 mph SE
Humidity80%
Visibility—
Dew point57°
Sat, 2471° / 54°0
71 °
Peterson, Saturday, 24 October
Clear. High 71°, low 54°.
Pressure30.09 inHg
Wind10.6 mph S
Humidity51%
Visibility—
Dew point48°
Sun, 2563° / 51°0.05
63 °
Peterson, Sunday, 25 October
Light rain. High 63°, low 51°.
Pressure30.03 inHg
Wind18.5 mph N
Humidity29%
Visibility—
Dew point29°
Mon, 2652° / 42°0
52 °
Peterson, Monday, 26 October
Overcast. High 52°, low 42°.
Pressure30.03 inHg
Wind15.5 mph NW
Humidity55%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2755° / 39°0.09
55 °
Peterson, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high55°
Average low39°
Average precipitation0.09 in
Chance of precipitation25%
Record high78° (1999)
Record low15° (2020)
Wed, 2854° / 38°0.04
54 °
Peterson, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.04 in
Chance of precipitation13%
Record high76° (2016)
Record low20° (1967)
Thu, 2955° / 38°0.08
55 °
Peterson, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high55°
Average low38°
Average precipitation0.08 in
Chance of precipitation30%
Record high79° (2024)
Record low23° (1980)
Fri, 3054° / 38°0.08
54 °
Peterson, Friday, 30 October
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.08 in
Chance of precipitation33%
Record high73° (2024)
Record low20° (1991)
Sat, 3153° / 37°0.09
53 °
Peterson, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.09 in
Chance of precipitation28%
Record high73° (1968)
Record low18° (1993)
Sun, 0151° / 37°0.07
51 °
Peterson, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.07 in
Chance of precipitation18%
Record high73° (2022)
Record low20° (2002)
Mon, 0251° / 36°0.03
51 °
Peterson, Monday, 2 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.03 in
Chance of precipitation17%
Record high74° (2022)
Record low11° (1991)
Tue, 0351° / 36°0.06
51 °
Peterson, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.06 in
Chance of precipitation17%
Record high73° (1978)
Record low3° (1991)
Wed, 0450° / 35°0.03
50 °
Peterson, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.03 in
Chance of precipitation17%
Record high71° (2020)
Record low-12° (1991)
Thu, 0550° / 34°0.06
50 °
Peterson, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high50°
Average low34°
Average precipitation0.06 in
Chance of precipitation20%
Record high69° (2020)
Record low15° (1991)
Fri, 0650° / 35°0.04
50 °
Peterson, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.04 in
Chance of precipitation22%
Record high72° (2020)
Record low5° (1991)
Sat, 0750° / 33°0.02
50 °
Peterson, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low33°
Average precipitation0.02 in
Chance of precipitation12%
Record high71° (2001)
Record low-17° (1991)
Sun, 0849° / 33°0.04
49 °
Peterson, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.04 in
Chance of precipitation15%
Record high76° (1999)
Record low-3° (1991)
Mon, 0948° / 33°0.15
48 °
Peterson, Monday, 9 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.15 in
Chance of precipitation27%
Record high71° (1999)
Record low15° (2018)
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 Peterson, 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 Peterson, 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.