Monthly outlook for Princeton, IA: average high 59.6°, average low 44.5°. That is 2.1° above the climate normal for October. Precipitation is expected on 4 days (about 1.6 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 22 October (75.8°), the coolest 6 November (32.8°).
59.6°/44.5°
Average high / low
+2.1°
Above normal
4 / 5
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
22 October – 31 October
64.2°
57.4°
+3.8°
1 November – 10 November
52°
52.4°
-0.2°
11 November – 20 November
at normal
47.4°
—
October records over 66 years
88.2°3 October 2025All-time high
17.8°28 October 1967All-time low
Fri, 2374° / 49°0
74 °
Princeton, Friday, 23 October
Clear. High 74°, low 49°.
Pressure30.30 inHg
Wind7.2 mph S
Humidity53%
Visibility6.2 mi
Dew point51°
Sat, 2469° / 53°0
69 °
Princeton, Saturday, 24 October
Overcast. High 69°, low 53°.
Pressure30.33 inHg
Wind8.9 mph S
Humidity55%
Visibility6.2 mi
Dew point50°
Sun, 2572° / 51°0
72 °
Princeton, Sunday, 25 October
Partly cloudy. High 72°, low 51°.
Pressure30.36 inHg
Wind4.2 mph S
Humidity56%
Visibility6.2 mi
Dew point51°
Mon, 2671° / 52°0
71 °
Princeton, Monday, 26 October
Overcast. High 71°, low 52°.
Pressure30.30 inHg
Wind5.2 mph E
Humidity51%
Visibility—
Dew point49°
Tue, 2758° / 52°0.17
58 °
Princeton, Tuesday, 27 October
Light rain. High 58°, low 52°.
Pressure30.18 inHg
Wind7.4 mph SW
Humidity74%
Visibility—
Dew point49°
Wed, 2849° / 39°0.04
49 °
Princeton, Wednesday, 28 October
Light rain. High 49°, low 39°.
Pressure30.33 inHg
Wind15.6 mph N
Humidity65%
Visibility—
Dew point34°
Thu, 2953° / 35°0
53 °
Princeton, Thursday, 29 October
Clear. High 53°, low 35°.
Pressure30.33 inHg
Wind7 mph S
Humidity45%
Visibility—
Dew point29°
Fri, 3058° / 39°0
58 °
Princeton, Friday, 30 October
Partly cloudy. High 58°, low 39°.
Pressure30.12 inHg
Wind16.7 mph S
Humidity42%
Visibility—
Dew point32°
Sat, 3161° / 52°0.12
61 °
Princeton, Saturday, 31 October
Light rain. High 61°, low 52°.
Pressure29.94 inHg
Wind16.9 mph S
Humidity53%
Visibility—
Dew point41°
Sun, 0155° / 53°1.15
55 °
Princeton, Sunday, 1 November
Rain. High 55°, low 53°.
Pressure29.88 inHg
Wind19.3 mph S
Humidity95%
Visibility—
Dew point52°
Mon, 0252° / 39°0.12
52 °
Princeton, Monday, 2 November
Light rain. High 52°, low 39°.
Pressure30.21 inHg
Wind18.5 mph NW
Humidity49%
Visibility—
Dew point30°
Tue, 0351° / 36°0
51 °
Princeton, Tuesday, 3 November
Overcast. High 51°, low 36°.
Pressure30.30 inHg
Wind11.2 mph W
Humidity41%
Visibility—
Dew point25°
Wed, 0456° / 41°0
56 °
Princeton, Wednesday, 4 November
Overcast. High 56°, low 41°.
Pressure29.71 inHg
Wind20.4 mph SW
Humidity71%
Visibility—
Dew point44°
Thu, 0557° / 38°0
57 °
Princeton, Thursday, 5 November
Partly cloudy. High 57°, low 38°.
Pressure29.77 inHg
Wind24.1 mph NW
Humidity53%
Visibility—
Dew point31°
Fri, 0640° / 33°0
40 °
Princeton, Friday, 6 November
Overcast. High 40°, low 33°.
Pressure30.03 inHg
Wind6.8 mph S
Humidity58%
Visibility—
Dew point26°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 0752° / 37°0.02
52 °
Princeton, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.02 in
Chance of precipitation15%
Record high69° (1966)
Record low13° (1991)
Sun, 0852° / 37°0.04
52 °
Princeton, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.04 in
Chance of precipitation15%
Record high75° (1999)
Record low12° (1991)
Mon, 0951° / 37°0.11
51 °
Princeton, Monday, 9 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.11 in
Chance of precipitation33%
Record high74° (1999)
Record low17° (1991)
Tue, 1050° / 35°0.1
50 °
Princeton, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.1 in
Chance of precipitation28%
Record high73° (2022)
Record low15° (2018)
Wed, 1148° / 33°0.07
48 °
Princeton, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.07 in
Chance of precipitation22%
Record high72° (1964)
Record low15° (2019)
Thu, 1246° / 32°0.06
46 °
Princeton, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.06 in
Chance of precipitation25%
Record high66° (1964)
Record low7° (2019)
Fri, 1347° / 32°0.05
47 °
Princeton, Friday, 13 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.05 in
Chance of precipitation25%
Record high72° (1999)
Record low6° (1986)
Sat, 1448° / 33°0.06
48 °
Princeton, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.06 in
Chance of precipitation28%
Record high70° (2025)
Record low14° (1986)
Sun, 1547° / 34°0.07
47 °
Princeton, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.07 in
Chance of precipitation28%
Record high69° (2025)
Record low18° (1982)
Mon, 1648° / 33°0.06
48 °
Princeton, Monday, 16 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.06 in
Chance of precipitation25%
Record high66° (1971)
Record low17° (1997)
Tue, 1748° / 34°0.13
48 °
Princeton, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.13 in
Chance of precipitation25%
Record high73° (2016)
Record low14° (2005)
Wed, 1848° / 34°0.07
48 °
Princeton, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.07 in
Chance of precipitation30%
Record high70° (1999)
Record low11° (2014)
Thu, 1948° / 33°0.06
48 °
Princeton, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.06 in
Chance of precipitation27%
Record high66° (1979)
Record low16° (2022)
Fri, 2046° / 32°0.1
46 °
Princeton, Friday, 20 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.1 in
Chance of precipitation32%
Record high65° (2003)
Record low16° (2022)
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 Princeton, 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 Princeton, 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.