Monthly outlook for Saint Charles, OH: average high 63.5°, average low 45.5°. That is 2.8° above the climate normal for October. Precipitation is expected on 3 days (about 1.2 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 26 October (74.1°), the coolest 6 November (31.9°).
63.5°/45.5°
Average high / low
+2.8°
Above normal
3 / 5
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
25 October – 3 November
68.9°
60°
+4.9°
4 November – 13 November
54.5°
54.6°
-0°
14 November – 23 November
at normal
50.8°
—
October records over 66 years
91.4°2 October 2019All-time high
25.5°26 October 1962All-time low
Climate normals and records are computed from the nearest reference point — Northbrook (13 mi).
Mon, 2674° / 44°0
74 °
Saint Charles, Monday, 26 October
Overcast. High 74°, low 44°.
Pressure30.36 inHg
Wind3.5 mph W
Humidity46%
Visibility6.2 mi
Dew point47°
Tue, 2774° / 44°0
74 °
Saint Charles, Tuesday, 27 October
Overcast. High 74°, low 44°.
Pressure30.30 inHg
Wind4.8 mph SE
Humidity51%
Visibility6.2 mi
Dew point48°
Wed, 2873° / 52°0
73 °
Saint Charles, Wednesday, 28 October
Overcast. High 73°, low 52°.
Pressure30.27 inHg
Wind3.8 mph SE
Humidity54%
Visibility6.2 mi
Dew point49°
Thu, 2973° / 51°0
73 °
Saint Charles, Thursday, 29 October
Clear. High 73°, low 51°.
Pressure30.21 inHg
Wind6.3 mph SW
Humidity46%
Visibility6.2 mi
Dew point46°
Fri, 3072° / 54°0.01
72 °
Saint Charles, Friday, 30 October
Light rain. High 72°, low 54°.
Pressure30.18 inHg
Wind6.3 mph W
Humidity60%
Visibility—
Dew point55°
Sat, 3168° / 56°0
68 °
Saint Charles, Saturday, 31 October
Overcast. High 68°, low 56°.
Pressure30.21 inHg
Wind6.6 mph E
Humidity53%
Visibility—
Dew point49°
Sun, 0166° / 52°0.15
66 °
Saint Charles, Sunday, 1 November
Rain. High 66°, low 52°.
Pressure30.09 inHg
Wind9.4 mph E
Humidity51%
Visibility—
Dew point46°
Mon, 0256° / 54°0.9
56 °
Saint Charles, Monday, 2 November
Rain. High 56°, low 54°.
Pressure29.68 inHg
Wind12.2 mph N
Humidity95%
Visibility—
Dew point55°
Tue, 0360° / 48°0
60 °
Saint Charles, Tuesday, 3 November
Overcast. High 60°, low 48°.
Pressure30.00 inHg
Wind9.8 mph N
Humidity57%
Visibility—
Dew point44°
Wed, 0461° / 43°0
61 °
Saint Charles, Wednesday, 4 November
Light rain. High 61°, low 43°.
Pressure30.09 inHg
Wind16.2 mph N
Humidity51%
Visibility—
Dew point42°
Thu, 0547° / 35°0
47 °
Saint Charles, Thursday, 5 November
Clear. High 47°, low 35°.
Pressure30.45 inHg
Wind14 mph NE
Humidity38%
Visibility—
Dew point21°
Fri, 0651° / 32°0
51 °
Saint Charles, Friday, 6 November
Clear. High 51°, low 32°.
Pressure30.30 inHg
Wind6 mph SE
Humidity36%
Visibility—
Dew point21°
Sat, 0759° / 36°0.03
59 °
Saint Charles, Saturday, 7 November
Light rain. High 59°, low 36°.
Pressure30.09 inHg
Wind15.5 mph SW
Humidity50%
Visibility—
Dew point37°
Sun, 0858° / 47°0.09
58 °
Saint Charles, Sunday, 8 November
Light rain. High 58°, low 47°.
Pressure29.94 inHg
Wind16.1 mph NW
Humidity83%
Visibility—
Dew point53°
Mon, 0950° / 40°0
50 °
Saint Charles, Monday, 9 November
Partly cloudy. High 50°, low 40°.
Pressure30.33 inHg
Wind14.1 mph N
Humidity49%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 1055° / 40°0.16
55 °
Saint Charles, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high55°
Average low40°
Average precipitation0.16 in
Chance of precipitation37%
Record high76° (2020)
Record low21° (2018)
Wed, 1153° / 38°0.13
53 °
Saint Charles, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.13 in
Chance of precipitation28%
Record high69° (1964)
Record low22° (2025)
Thu, 1251° / 37°0.11
51 °
Saint Charles, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.11 in
Chance of precipitation30%
Record high69° (1985)
Record low8° (2019)
Fri, 1351° / 37°0.07
51 °
Saint Charles, Friday, 13 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.07 in
Chance of precipitation25%
Record high71° (2010)
Record low6° (2019)
Sat, 1452° / 37°0.07
52 °
Saint Charles, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.07 in
Chance of precipitation23%
Record high73° (2011)
Record low19° (1986)
Sun, 1551° / 38°0.16
51 °
Saint Charles, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.16 in
Chance of precipitation35%
Record high71° (1971)
Record low22° (1969)
Mon, 1651° / 37°0.09
51 °
Saint Charles, Monday, 16 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.09 in
Chance of precipitation28%
Record high70° (1987)
Record low25° (1967)
Tue, 1751° / 37°0.13
51 °
Saint Charles, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.13 in
Chance of precipitation27%
Record high70° (1971)
Record low18° (2014)
Wed, 1852° / 38°0.1
52 °
Saint Charles, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.1 in
Chance of precipitation27%
Record high73° (2016)
Record low10° (2014)
Thu, 1952° / 38°0.11
52 °
Saint Charles, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.11 in
Chance of precipitation32%
Record high73° (1985)
Record low7° (2014)
Fri, 2051° / 37°0.1
51 °
Saint Charles, Friday, 20 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.1 in
Chance of precipitation30%
Record high67° (1985)
Record low13° (1984)
Sat, 2149° / 37°0.1
49 °
Saint Charles, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.1 in
Chance of precipitation33%
Record high67° (1979)
Record low15° (2014)
Sun, 2249° / 35°0.08
49 °
Saint Charles, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.08 in
Chance of precipitation27%
Record high69° (2010)
Record low17° (1964)
Mon, 2349° / 35°0.08
49 °
Saint Charles, Monday, 23 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.08 in
Chance of precipitation28%
Record high70° (1999)
Record low17° (1970)
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 Saint Charles, OH 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 Saint Charles, OH 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.