Monthly outlook for Monona, IA: average high 59.5°, average low 43.5°. That is 0.9° above the climate normal for October. Precipitation is expected on 1 day (about 0.4 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 10 October (83.1°), the coolest 18 October (22.6°).
59.5°/43.5°
Average high / low
+0.9°
Above normal
1 / 5
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
61.6°
58.8°
+1.6°
20 October – 29 October
55.9°
55.1°
+0.5°
30 October – 8 November
at normal
50.2°
—
October records over 66 years
86.2°1 October 1976All-time high
21.6°27 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Waterville (12 mi).
Sun, 1181° / 59°0
81 °
Monona, Sunday, 11 October
Clear. High 81°, low 59°.
Pressure29.88 inHg
Wind9.7 mph S
Humidity65%
Visibility6.2 mi
Dew point59°
Mon, 1281° / 65°0
81 °
Monona, Monday, 12 October
Clear. High 81°, low 65°.
Pressure29.74 inHg
Wind10.1 mph SW
Humidity68%
Visibility6.2 mi
Dew point66°
Tue, 1371° / 58°0
71 °
Monona, Tuesday, 13 October
Overcast. High 71°, low 58°.
Pressure29.88 inHg
Wind9.1 mph NW
Humidity74%
Visibility6.2 mi
Dew point56°
Wed, 1463° / 52°0
63 °
Monona, Wednesday, 14 October
Overcast. High 63°, low 52°.
Pressure30.15 inHg
Wind8 mph N
Humidity65%
Visibility6.2 mi
Dew point48°
Thu, 1559° / 50°0.02
59 °
Monona, Thursday, 15 October
Light rain. High 59°, low 50°.
Pressure30.27 inHg
Wind9.2 mph E
Humidity65%
Visibility—
Dew point46°
Fri, 1652° / 33°0.01
52 °
Monona, Friday, 16 October
Light snow. High 52°, low 33°.
Pressure30.12 inHg
Wind22.5 mph W
Humidity66%
Visibility—
Dew point33°
Sat, 1735° / 25°0.01
35 °
Monona, Saturday, 17 October
Light snow. High 35°, low 25°.
Pressure30.39 inHg
Wind20.5 mph N
Humidity56%
Visibility—
Dew point20°
Sun, 1842° / 23°0
42 °
Monona, Sunday, 18 October
Clear. High 42°, low 23°.
Pressure30.62 inHg
Wind7.3 mph N
Humidity39%
Visibility—
Dew point16°
Mon, 1948° / 28°0
48 °
Monona, Monday, 19 October
Overcast. High 48°, low 28°.
Pressure30.47 inHg
Wind18.1 mph S
Humidity40%
Visibility—
Dew point21°
Tue, 2057° / 36°0
57 °
Monona, Tuesday, 20 October
Clear. High 57°, low 36°.
Pressure30.27 inHg
Wind14.6 mph S
Humidity52%
Visibility—
Dew point35°
Wed, 2161° / 41°0
61 °
Monona, Wednesday, 21 October
Mostly clear. High 61°, low 41°.
Pressure30.12 inHg
Wind18.2 mph S
Humidity50%
Visibility—
Dew point39°
Thu, 2260° / 47°0.34
60 °
Monona, Thursday, 22 October
Rain. High 60°, low 47°.
Pressure30.18 inHg
Wind14.5 mph N
Humidity56%
Visibility—
Dew point43°
Fri, 2346° / 39°0
46 °
Monona, Friday, 23 October
Partly cloudy. High 46°, low 39°.
Pressure30.30 inHg
Wind15 mph NW
Humidity69%
Visibility—
Dew point34°
Sat, 2453° / 42°0.03
53 °
Monona, Saturday, 24 October
Light rain. High 53°, low 42°.
Pressure30.27 inHg
Wind12.5 mph N
Humidity78%
Visibility—
Dew point42°
Sun, 2558° / 41°0
58 °
Monona, Sunday, 25 October
Overcast. High 58°, low 41°.
Pressure30.21 inHg
Wind6 mph NW
Humidity63%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2654° / 41°0.07
54 °
Monona, Monday, 26 October
Climate normal for this date — 60-year average.
Average high54°
Average low41°
Average precipitation0.07 in
Chance of precipitation23%
Record high73° (1989)
Record low25° (2020)
Tue, 2754° / 40°0.07
54 °
Monona, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high54°
Average low40°
Average precipitation0.07 in
Chance of precipitation22%
Record high72° (2014)
Record low22° (2020)
Wed, 2853° / 39°0.07
53 °
Monona, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.07 in
Chance of precipitation25%
Record high70° (2016)
Record low27° (1969)
Thu, 2953° / 40°0.09
53 °
Monona, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.09 in
Chance of precipitation27%
Record high78° (2024)
Record low25° (2019)
Fri, 3054° / 40°0.08
54 °
Monona, Friday, 30 October
Climate normal for this date — 60-year average.
Average high54°
Average low40°
Average precipitation0.08 in
Chance of precipitation30%
Record high76° (2024)
Record low22° (2023)
Sat, 3152° / 40°0.11
52 °
Monona, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.11 in
Chance of precipitation35%
Record high70° (1968)
Record low26° (2019)
Sun, 0151° / 38°0.18
51 °
Monona, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.18 in
Chance of precipitation28%
Record high72° (2000)
Record low22° (2023)
Mon, 0250° / 38°0.07
50 °
Monona, Monday, 2 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.07 in
Chance of precipitation27%
Record high69° (2022)
Record low15° (1991)
Tue, 0350° / 37°0.07
50 °
Monona, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.07 in
Chance of precipitation22%
Record high70° (2008)
Record low11° (1991)
Wed, 0449° / 37°0.08
49 °
Monona, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.08 in
Chance of precipitation30%
Record high70° (2008)
Record low6° (1991)
Thu, 0549° / 36°0.07
49 °
Monona, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.07 in
Chance of precipitation25%
Record high69° (2020)
Record low16° (1991)
Fri, 0649° / 36°0.06
49 °
Monona, Friday, 6 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.06 in
Chance of precipitation27%
Record high68° (2020)
Record low10° (1991)
Sat, 0748° / 35°0.02
48 °
Monona, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.02 in
Chance of precipitation12%
Record high68° (2001)
Record low-7° (1991)
Sun, 0848° / 35°0.04
48 °
Monona, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.04 in
Chance of precipitation23%
Record high71° (1999)
Record low0° (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 Monona, 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 Monona, 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.