Monthly outlook for Cornell, IA: average high 65.5°, average low 48.9°. That is 2.7° above the climate normal for October. Precipitation is expected on 1 day (about 0.3 inches), against a normal of 3 days and 1.2 inches. The warmest day looks like 15 October (82.8°), the coolest 18 October (38.5°).
65.5°/48.9°
Average high / low
+2.7°
Above normal
1 / 3
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
69.4°
61.8°
+4.2°
17 October – 26 October
58.9°
57.8°
+0.6°
27 October – 5 November
at normal
52.3°
—
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 (4 mi).
Thu, 0874° / 49°0
74 °
Cornell, Thursday, 8 October
Partly cloudy. High 74°, low 49°.
Pressure30.15 inHg
Wind2.8 mph SE
Humidity44%
Visibility6.2 mi
Dew point42°
Fri, 0980° / 54°0.2
80 °
Cornell, Friday, 9 October
Heavy rain. High 80°, low 54°.
Pressure29.88 inHg
Wind10.3 mph S
Humidity67%
Visibility6.2 mi
Dew point60°
Sat, 1080° / 64°0
80 °
Cornell, Saturday, 10 October
Clear. High 80°, low 64°.
Pressure29.80 inHg
Wind17.9 mph S
Humidity51%
Visibility6.2 mi
Dew point56°
Sun, 1179° / 63°0
79 °
Cornell, Sunday, 11 October
Clear. High 79°, low 63°.
Pressure29.77 inHg
Wind15 mph S
Humidity53%
Visibility6.2 mi
Dew point56°
Mon, 1257° / 49°0.01
57 °
Cornell, Monday, 12 October
Light rain. High 57°, low 49°.
Pressure29.94 inHg
Wind13.6 mph N
Humidity67%
Visibility—
Dew point45°
Tue, 1355° / 42°0
55 °
Cornell, Tuesday, 13 October
Overcast. High 55°, low 42°.
Pressure30.21 inHg
Wind14.6 mph N
Humidity51%
Visibility—
Dew point32°
Wed, 1462° / 43°0.01
62 °
Cornell, Wednesday, 14 October
Light rain. High 62°, low 43°.
Pressure30.00 inHg
Wind20 mph SE
Humidity54%
Visibility—
Dew point37°
Thu, 1583° / 54°0.02
83 °
Cornell, Thursday, 15 October
Light rain. High 83°, low 54°.
Pressure29.47 inHg
Wind23 mph S
Humidity64%
Visibility—
Dew point64°
Fri, 1649° / 44°0
49 °
Cornell, Friday, 16 October
Overcast. High 49°, low 44°.
Pressure29.91 inHg
Wind18.7 mph W
Humidity81%
Visibility—
Dew point40°
Sat, 1744° / 40°0.01
44 °
Cornell, Saturday, 17 October
Light rain. High 44°, low 40°.
Pressure30.09 inHg
Wind18 mph W
Humidity76%
Visibility—
Dew point37°
Sun, 1851° / 38°0.02
51 °
Cornell, Sunday, 18 October
Light rain. High 51°, low 38°.
Pressure30.15 inHg
Wind14.2 mph NW
Humidity64%
Visibility—
Dew point33°
Mon, 1962° / 39°0
62 °
Cornell, Monday, 19 October
Overcast. High 62°, low 39°.
Pressure30.15 inHg
Wind8.4 mph SW
Humidity45%
Visibility—
Dew point34°
Tue, 2070° / 48°0
70 °
Cornell, Tuesday, 20 October
Clear. High 70°, low 48°.
Pressure30.12 inHg
Wind7 mph S
Humidity53%
Visibility—
Dew point47°
Wed, 2163° / 52°0
63 °
Cornell, Wednesday, 21 October
Light rain. High 63°, low 52°.
Pressure30.18 inHg
Wind12.5 mph SE
Humidity71%
Visibility—
Dew point48°
Thu, 2264° / 52°0
64 °
Cornell, Thursday, 22 October
Overcast. High 64°, low 52°.
Pressure30.15 inHg
Wind11.1 mph SE
Humidity52%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2357° / 42°0.14
57 °
Cornell, Friday, 23 October
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.14 in
Chance of precipitation33%
Record high83° (2022)
Record low22° (1981)
Sat, 2457° / 40°0.08
57 °
Cornell, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high57°
Average low40°
Average precipitation0.08 in
Chance of precipitation32%
Record high75° (1989)
Record low20° (2020)
Sun, 2556° / 40°0.04
56 °
Cornell, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high56°
Average low40°
Average precipitation0.04 in
Chance of precipitation20%
Record high77° (1989)
Record low24° (2020)
Mon, 2656° / 39°0.07
56 °
Cornell, Monday, 26 October
Climate normal for this date — 60-year average.
Average high56°
Average low39°
Average precipitation0.07 in
Chance of precipitation17%
Record high76° (1989)
Record low19° (2020)
Tue, 2755° / 39°0.09
55 °
Cornell, 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 °
Cornell, 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 °
Cornell, 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 °
Cornell, 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 °
Cornell, 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 °
Cornell, 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 °
Cornell, 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 °
Cornell, 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 °
Cornell, 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 °
Cornell, 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)
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 Cornell, 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 Cornell, 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.