Monthly outlook for Saint Charles, PA: average high 57.1°, average low 37.6°. That is 0.8° above the climate normal for October. Precipitation is expected on 3 days (about 1.0 inches), against a normal of 6 days and 2.0 inches. The warmest day looks like 19 October (68.3°), the coolest 30 October (26.5°).
57.1°/37.6°
Average high / low
+0.8°
Above normal
3 / 6
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
61.1°
56.3°
+2.7°
29 October – 7 November
50.5°
53.2°
-1.5°
8 November – 17 November
at normal
48°
—
October records over 66 years
83.8°8 October 2007All-time high
23.2°31 October 2002All-time low
Climate normals and records are computed from the nearest reference point — Madison (7 mi).
Tue, 2068° / 36°0
68 °
Saint Charles, Tuesday, 20 October
Partly cloudy. High 68°, low 36°.
Pressure30.36 inHg
Wind4.4 mph NE
Humidity62%
Visibility6.2 mi
Dew point47°
Wed, 2163° / 32°0
63 °
Saint Charles, Wednesday, 21 October
Clear. High 63°, low 32°.
Pressure30.30 inHg
Wind2.2 mph E
Humidity57%
Visibility6.2 mi
Dew point42°
Thu, 2262° / 39°0
62 °
Saint Charles, Thursday, 22 October
Light rain. High 62°, low 39°.
Pressure30.18 inHg
Wind11.1 mph N
Humidity67%
Visibility6.2 mi
Dew point48°
Fri, 2354° / 36°0
54 °
Saint Charles, Friday, 23 October
Clear. High 54°, low 36°.
Pressure30.39 inHg
Wind5.8 mph N
Humidity62%
Visibility6.2 mi
Dew point36°
Sat, 2456° / 31°0
56 °
Saint Charles, Saturday, 24 October
Clear. High 56°, low 31°.
Pressure30.50 inHg
Wind5.2 mph NE
Humidity49%
Visibility—
Dew point33°
Sun, 2561° / 36°0
61 °
Saint Charles, Sunday, 25 October
Clear. High 61°, low 36°.
Pressure30.39 inHg
Wind6 mph S
Humidity52%
Visibility—
Dew point40°
Mon, 2659° / 46°0
59 °
Saint Charles, Monday, 26 October
Overcast. High 59°, low 46°.
Pressure30.30 inHg
Wind5.6 mph W
Humidity69%
Visibility—
Dew point47°
Tue, 2765° / 50°0
65 °
Saint Charles, Tuesday, 27 October
Overcast. High 65°, low 50°.
Pressure30.09 inHg
Wind9.9 mph SW
Humidity55%
Visibility—
Dew point46°
Wed, 2855° / 33°0.33
55 °
Saint Charles, Wednesday, 28 October
Snow. High 55°, low 33°.
Pressure29.97 inHg
Wind15.2 mph NW
Humidity95%
Visibility—
Dew point41°
Thu, 2943° / 28°0
43 °
Saint Charles, Thursday, 29 October
Overcast. High 43°, low 28°.
Pressure30.15 inHg
Wind14.7 mph W
Humidity53%
Visibility—
Dew point24°
Fri, 3049° / 27°0
49 °
Saint Charles, Friday, 30 October
Mostly clear. High 49°, low 27°.
Pressure30.12 inHg
Wind10.9 mph SW
Humidity35%
Visibility—
Dew point20°
Sat, 3154° / 37°0
54 °
Saint Charles, Saturday, 31 October
Overcast. High 54°, low 37°.
Pressure30.21 inHg
Wind7.5 mph SW
Humidity42%
Visibility—
Dew point30°
Sun, 0152° / 46°0.17
52 °
Saint Charles, Sunday, 1 November
Light rain. High 52°, low 46°.
Pressure30.03 inHg
Wind7.7 mph SE
Humidity89%
Visibility—
Dew point45°
Mon, 0256° / 46°0.53
56 °
Saint Charles, Monday, 2 November
Rain. High 56°, low 46°.
Pressure29.71 inHg
Wind9.2 mph NW
Humidity92%
Visibility—
Dew point49°
Tue, 0348° / 45°0.01
48 °
Saint Charles, Tuesday, 3 November
Light rain. High 48°, low 45°.
Pressure29.71 inHg
Wind19.4 mph N
Humidity85%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0452° / 38°0.11
52 °
Saint Charles, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.11 in
Chance of precipitation32%
Record high73° (2003)
Record low22° (1991)
Thu, 0552° / 38°0.11
52 °
Saint Charles, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.11 in
Chance of precipitation43%
Record high75° (2024)
Record low19° (1991)
Fri, 0651° / 38°0.1
51 °
Saint Charles, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.1 in
Chance of precipitation37%
Record high68° (1975)
Record low24° (1995)
Sat, 0750° / 37°0.13
50 °
Saint Charles, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.13 in
Chance of precipitation38%
Record high68° (1996)
Record low25° (1967)
Sun, 0851° / 36°0.11
51 °
Saint Charles, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.11 in
Chance of precipitation33%
Record high69° (2020)
Record low24° (1967)
Mon, 0951° / 37°0.12
51 °
Saint Charles, Monday, 9 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.12 in
Chance of precipitation40%
Record high70° (2020)
Record low21° (1991)
Tue, 1051° / 37°0.16
51 °
Saint Charles, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.16 in
Chance of precipitation40%
Record high72° (2020)
Record low20° (2017)
Wed, 1148° / 36°0.17
48 °
Saint Charles, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.17 in
Chance of precipitation40%
Record high66° (1964)
Record low18° (2017)
Thu, 1247° / 34°0.13
47 °
Saint Charles, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.13 in
Chance of precipitation40%
Record high65° (1964)
Record low18° (2019)
Fri, 1346° / 33°0.07
46 °
Saint Charles, Friday, 13 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.07 in
Chance of precipitation33%
Record high64° (1989)
Record low12° (1996)
Sat, 1447° / 34°0.11
47 °
Saint Charles, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.11 in
Chance of precipitation30%
Record high65° (1994)
Record low12° (1986)
Sun, 1547° / 33°0.15
47 °
Saint Charles, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.15 in
Chance of precipitation53%
Record high64° (1989)
Record low7° (1996)
Mon, 1646° / 33°0.15
46 °
Saint Charles, Monday, 16 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.15 in
Chance of precipitation42%
Record high64° (1988)
Record low15° (1967)
Tue, 1746° / 33°0.13
46 °
Saint Charles, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.13 in
Chance of precipitation38%
Record high62° (2021)
Record low19° (2014)
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, PA 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, PA 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.