Monthly outlook for Old Monroe, MO: average high 71.5°, average low 54.3°. That is 6.1° above the climate normal for October. Precipitation is expected on 5 days (about 1.6 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 3 November (78°), the coolest 24 October (48.3°).
71.5°/54.3°
Average high / low
+6.1°
Above normal
5 / 5
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
23 October – 1 November
70.8°
62.2°
+4.8°
2 November – 11 November
72.7°
57.4°
+8.5°
12 November – 21 November
at normal
53.4°
—
October records over 66 years
91.9°10 October 1963All-time high
28.8°24 October 1981All-time low
Climate normals and records are computed from the nearest reference point — O'Fallon (11 mi).
Sat, 2475° / 48°0
75 °
Old Monroe, Saturday, 24 October
Overcast. High 75°, low 48°.
Pressure30.36 inHg
Wind5.1 mph SE
Humidity53%
Visibility6.2 mi
Dew point50°
Sun, 2574° / 50°0
74 °
Old Monroe, Sunday, 25 October
Overcast. High 74°, low 50°.
Pressure30.39 inHg
Wind3.9 mph S
Humidity57%
Visibility6.2 mi
Dew point54°
Mon, 2673° / 54°0
73 °
Old Monroe, Monday, 26 October
Overcast. High 73°, low 54°.
Pressure30.33 inHg
Wind1.9 mph SW
Humidity55%
Visibility6.2 mi
Dew point53°
Tue, 2771° / 53°0
71 °
Old Monroe, Tuesday, 27 October
Overcast. High 71°, low 53°.
Pressure30.24 inHg
Wind4 mph S
Humidity60%
Visibility6.2 mi
Dew point52°
Wed, 2875° / 57°0
75 °
Old Monroe, Wednesday, 28 October
Clear. High 75°, low 57°.
Pressure30.09 inHg
Wind10.1 mph S
Humidity45%
Visibility—
Dew point49°
Thu, 2977° / 57°0
77 °
Old Monroe, Thursday, 29 October
Light rain. High 77°, low 57°.
Pressure30.12 inHg
Wind12.1 mph N
Humidity34%
Visibility—
Dew point44°
Fri, 3056° / 51°0.55
56 °
Old Monroe, Friday, 30 October
Rain. High 56°, low 51°.
Pressure30.15 inHg
Wind10.2 mph NE
Humidity94%
Visibility—
Dew point51°
Sat, 3161° / 55°0.19
61 °
Old Monroe, Saturday, 31 October
Light rain. High 61°, low 55°.
Pressure30.06 inHg
Wind7.7 mph E
Humidity83%
Visibility—
Dew point53°
Sun, 0169° / 53°0
69 °
Old Monroe, Sunday, 1 November
Partly cloudy. High 69°, low 53°.
Pressure30.12 inHg
Wind4.1 mph SE
Humidity57%
Visibility—
Dew point50°
Mon, 0260° / 56°0.5
60 °
Old Monroe, Monday, 2 November
Rain. High 60°, low 56°.
Pressure30.00 inHg
Wind14.1 mph SE
Humidity89%
Visibility—
Dew point55°
Tue, 0378° / 60°0.24
78 °
Old Monroe, Tuesday, 3 November
Light rain. High 78°, low 60°.
Pressure29.62 inHg
Wind11.9 mph S
Humidity72%
Visibility—
Dew point63°
Wed, 0475° / 59°0.08
75 °
Old Monroe, Wednesday, 4 November
Light rain. High 75°, low 59°.
Pressure29.74 inHg
Wind7 mph NW
Humidity59%
Visibility—
Dew point56°
Thu, 0576° / 58°0
76 °
Old Monroe, Thursday, 5 November
Overcast. High 76°, low 58°.
Pressure29.80 inHg
Wind10.9 mph SW
Humidity45%
Visibility—
Dew point51°
Fri, 0672° / 54°0
72 °
Old Monroe, Friday, 6 November
Overcast. High 72°, low 54°.
Pressure29.94 inHg
Wind10 mph W
Humidity47%
Visibility—
Dew point47°
Sat, 0776° / 54°0
76 °
Old Monroe, Saturday, 7 November
Overcast. High 76°, low 54°.
Pressure29.91 inHg
Wind11.1 mph W
Humidity36%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0858° / 42°0.03
58 °
Old Monroe, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high58°
Average low42°
Average precipitation0.03 in
Chance of precipitation17%
Record high82° (2023)
Record low0° (1991)
Mon, 0958° / 43°0.11
58 °
Old Monroe, Monday, 9 November
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.11 in
Chance of precipitation28%
Record high78° (2022)
Record low10° (1991)
Tue, 1056° / 41°0.12
56 °
Old Monroe, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.12 in
Chance of precipitation27%
Record high75° (2012)
Record low19° (2018)
Wed, 1154° / 38°0.09
54 °
Old Monroe, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.09 in
Chance of precipitation28%
Record high76° (1964)
Record low21° (2019)
Thu, 1252° / 37°0.09
52 °
Old Monroe, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.09 in
Chance of precipitation22%
Record high72° (2010)
Record low11° (2019)
Fri, 1354° / 38°0.05
54 °
Old Monroe, Friday, 13 November
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.05 in
Chance of precipitation20%
Record high78° (1999)
Record low11° (1986)
Sat, 1454° / 39°0.07
54 °
Old Monroe, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.07 in
Chance of precipitation27%
Record high78° (2025)
Record low16° (1986)
Sun, 1554° / 39°0.12
54 °
Old Monroe, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.12 in
Chance of precipitation30%
Record high76° (2025)
Record low22° (2019)
Mon, 1654° / 38°0.11
54 °
Old Monroe, Monday, 16 November
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.11 in
Chance of precipitation22%
Record high72° (2001)
Record low25° (1997)
Tue, 1755° / 39°0.13
55 °
Old Monroe, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high55°
Average low39°
Average precipitation0.13 in
Chance of precipitation28%
Record high76° (2016)
Record low19° (2014)
Wed, 1854° / 39°0.15
54 °
Old Monroe, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.15 in
Chance of precipitation30%
Record high72° (2024)
Record low14° (2014)
Thu, 1954° / 39°0.1
54 °
Old Monroe, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.1 in
Chance of precipitation27%
Record high72° (1979)
Record low22° (2022)
Fri, 2052° / 38°0.13
52 °
Old Monroe, Friday, 20 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.13 in
Chance of precipitation30%
Record high73° (2007)
Record low19° (1984)
Sat, 2151° / 37°0.09
51 °
Old Monroe, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.09 in
Chance of precipitation25%
Record high69° (1990)
Record low16° (1964)
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 Monroe, MO 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 Monroe, MO 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.