Monthly outlook for Cascade, IL: average high 73.1°, average low 50.7°. That is 4.2° above the climate normal for October. Precipitation is expected on 1 day (about 0.7 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 7 October (85.9°), the coolest 19 October (39.8°).
73.1°/50.7°
Average high / low
+4.2°
Above normal
1 / 4
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
79.1°
67°
+6.7°
17 October – 26 October
63.2°
62.2°
+0.5°
27 October – 5 November
at normal
58.4°
—
October records over 66 years
89.4°7 October 2007All-time high
24.8°26 October 1962All-time low
Climate normals and records are computed from the nearest reference point — Springfield (11 mi).
Thu, 0881° / 51°0
81 °
Cascade, Thursday, 8 October
Clear. High 81°, low 51°.
Pressure30.12 inHg
Wind1.6 mph SW
Humidity41%
Visibility6.2 mi
Dew point49°
Fri, 0983° / 54°0
83 °
Cascade, Friday, 9 October
Clear. High 83°, low 54°.
Pressure30.15 inHg
Wind10.8 mph S
Humidity35%
Visibility6.2 mi
Dew point48°
Sat, 1083° / 61°0
83 °
Cascade, Saturday, 10 October
Overcast. High 83°, low 61°.
Pressure30.12 inHg
Wind8.7 mph S
Humidity45%
Visibility6.2 mi
Dew point58°
Sun, 1167° / 61°0.66
67 °
Cascade, Sunday, 11 October
Rain. High 67°, low 61°.
Pressure29.83 inHg
Wind6.1 mph NE
Humidity84%
Visibility6.2 mi
Dew point61°
Mon, 1283° / 58°0
83 °
Cascade, Monday, 12 October
Clear. High 83°, low 58°.
Pressure29.83 inHg
Wind8.2 mph SW
Humidity54%
Visibility—
Dew point60°
Tue, 1373° / 53°0
73 °
Cascade, Tuesday, 13 October
Light rain. High 73°, low 53°.
Pressure29.97 inHg
Wind16.9 mph NW
Humidity43%
Visibility—
Dew point48°
Wed, 1470° / 44°0
70 °
Cascade, Wednesday, 14 October
Overcast. High 70°, low 44°.
Pressure30.15 inHg
Wind10.8 mph E
Humidity33%
Visibility—
Dew point33°
Thu, 1586° / 55°0
86 °
Cascade, Thursday, 15 October
Clear. High 86°, low 55°.
Pressure29.91 inHg
Wind18.5 mph S
Humidity28%
Visibility—
Dew point41°
Fri, 1681° / 59°0.03
81 °
Cascade, Friday, 16 October
Light rain. High 81°, low 59°.
Pressure29.88 inHg
Wind18 mph W
Humidity59%
Visibility—
Dew point59°
Sat, 1762° / 46°0
62 °
Cascade, Saturday, 17 October
Clear. High 62°, low 46°.
Pressure30.06 inHg
Wind14.6 mph NW
Humidity41%
Visibility—
Dew point36°
Sun, 1855° / 42°0
55 °
Cascade, Sunday, 18 October
Mostly clear. High 55°, low 42°.
Pressure30.12 inHg
Wind16.5 mph NW
Humidity52%
Visibility—
Dew point36°
Mon, 1963° / 40°0
63 °
Cascade, Monday, 19 October
Clear. High 63°, low 40°.
Pressure30.21 inHg
Wind8 mph NW
Humidity43%
Visibility—
Dew point35°
Tue, 2072° / 45°0
72 °
Cascade, Tuesday, 20 October
Clear. High 72°, low 45°.
Pressure30.18 inHg
Wind6.4 mph W
Humidity33%
Visibility—
Dew point35°
Wed, 2164° / 46°0
64 °
Cascade, Wednesday, 21 October
Clear. High 64°, low 46°.
Pressure30.24 inHg
Wind10.4 mph E
Humidity41%
Visibility—
Dew point37°
Thu, 2263° / 41°0
63 °
Cascade, Thursday, 22 October
Overcast. High 63°, low 41°.
Pressure30.24 inHg
Wind7.4 mph SE
Humidity28%
Visibility—
Dew point24°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2363° / 47°0.11
63 °
Cascade, Friday, 23 October
Climate normal for this date — 60-year average.
Average high63°
Average low47°
Average precipitation0.11 in
Chance of precipitation33%
Record high82° (1963)
Record low30° (1982)
Sat, 2461° / 47°0.14
61 °
Cascade, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high61°
Average low47°
Average precipitation0.14 in
Chance of precipitation33%
Record high81° (1963)
Record low25° (1981)
Sun, 2561° / 46°0.14
61 °
Cascade, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high61°
Average low46°
Average precipitation0.14 in
Chance of precipitation30%
Record high78° (1963)
Record low30° (2013)
Mon, 2660° / 45°0.14
60 °
Cascade, Monday, 26 October
Climate normal for this date — 60-year average.
Average high60°
Average low45°
Average precipitation0.14 in
Chance of precipitation33%
Record high82° (1963)
Record low25° (1962)
Tue, 2760° / 45°0.09
60 °
Cascade, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high60°
Average low45°
Average precipitation0.09 in
Chance of precipitation32%
Record high77° (1984)
Record low31° (2001)
Wed, 2859° / 44°0.05
59 °
Cascade, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high59°
Average low44°
Average precipitation0.05 in
Chance of precipitation17%
Record high76° (1999)
Record low29° (1969)
Thu, 2960° / 44°0.08
60 °
Cascade, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high60°
Average low44°
Average precipitation0.08 in
Chance of precipitation28%
Record high79° (2004)
Record low27° (1980)
Fri, 3061° / 45°0.11
61 °
Cascade, Friday, 30 October
Climate normal for this date — 60-year average.
Average high61°
Average low45°
Average precipitation0.11 in
Chance of precipitation33%
Record high80° (1971)
Record low26° (1980)
Sat, 3160° / 46°0.17
60 °
Cascade, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high60°
Average low46°
Average precipitation0.17 in
Chance of precipitation42%
Record high77° (1968)
Record low28° (1993)
Sun, 0159° / 44°0.21
59 °
Cascade, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high59°
Average low44°
Average precipitation0.21 in
Chance of precipitation37%
Record high78° (2016)
Record low26° (1993)
Mon, 0258° / 43°0.09
58 °
Cascade, Monday, 2 November
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.09 in
Chance of precipitation30%
Record high77° (1961)
Record low26° (1966)
Tue, 0356° / 41°0.12
56 °
Cascade, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.12 in
Chance of precipitation30%
Record high77° (1987)
Record low18° (1991)
Wed, 0456° / 43°0.11
56 °
Cascade, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high56°
Average low43°
Average precipitation0.11 in
Chance of precipitation25%
Record high76° (1978)
Record low17° (1991)
Thu, 0556° / 41°0.16
56 °
Cascade, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high56°
Average low41°
Average precipitation0.16 in
Chance of precipitation28%
Record high77° (1978)
Record low20° (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 Cascade, IL 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 Cascade, IL 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.