Monthly outlook for Lily Cache, IL: average high 67.8°, average low 50.9°. That is 3° above the climate normal for October. Precipitation is expected on 6 days (about 1.8 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 12 October (80.5°), the coolest 18 October (38.1°).
67.8°/50.9°
Average high / low
+3°
Above normal
6 / 5
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
70.1°
63.8°
+3.5°
18 October – 27 October
63.8°
59.2°
+2.6°
28 October – 6 November
at normal
55.4°
—
October records over 66 years
87.6°7 October 2007All-time high
22.6°24 October 1981All-time low
Climate normals and records are computed from the nearest reference point — Joliet (5 mi).
Fri, 0976° / 51°0.07
76 °
Lily Cache, Friday, 9 October
Rain. High 76°, low 51°.
Pressure30.12 inHg
Wind7.5 mph SE
Humidity56%
Visibility6.2 mi
Dew point52°
Sat, 1076° / 57°0
76 °
Lily Cache, Saturday, 10 October
Overcast. High 76°, low 57°.
Pressure30.09 inHg
Wind7.6 mph S
Humidity58%
Visibility6.2 mi
Dew point55°
Sun, 1172° / 55°0
72 °
Lily Cache, Sunday, 11 October
Clear. High 72°, low 55°.
Pressure30.00 inHg
Wind2.1 mph NE
Humidity68%
Visibility6.2 mi
Dew point57°
Mon, 1281° / 57°0
81 °
Lily Cache, Monday, 12 October
Overcast. High 81°, low 57°.
Pressure29.85 inHg
Wind9.6 mph SW
Humidity60%
Visibility6.2 mi
Dew point61°
Tue, 1366° / 55°0.24
66 °
Lily Cache, Tuesday, 13 October
Light rain. High 66°, low 55°.
Pressure30.00 inHg
Wind11.5 mph NE
Humidity75%
Visibility—
Dew point55°
Wed, 1466° / 54°0.48
66 °
Lily Cache, Wednesday, 14 October
Rain. High 66°, low 54°.
Pressure30.00 inHg
Wind11.8 mph SE
Humidity74%
Visibility—
Dew point49°
Thu, 1575° / 65°0.64
75 °
Lily Cache, Thursday, 15 October
Heavy rain. High 75°, low 65°.
Pressure30.00 inHg
Wind12.5 mph S
Humidity74%
Visibility—
Dew point62°
Fri, 1666° / 50°0.24
66 °
Lily Cache, Friday, 16 October
Rain. High 66°, low 50°.
Pressure30.27 inHg
Wind14.7 mph NW
Humidity50%
Visibility—
Dew point44°
Sat, 1751° / 41°0
51 °
Lily Cache, Saturday, 17 October
Clear. High 51°, low 41°.
Pressure30.50 inHg
Wind13.7 mph N
Humidity44%
Visibility—
Dew point28°
Sun, 1855° / 38°0
55 °
Lily Cache, Sunday, 18 October
Mostly clear. High 55°, low 38°.
Pressure30.56 inHg
Wind6.5 mph N
Humidity39%
Visibility—
Dew point28°
Mon, 1959° / 41°0
59 °
Lily Cache, Monday, 19 October
Clear. High 59°, low 41°.
Pressure30.47 inHg
Wind8.3 mph S
Humidity39%
Visibility—
Dew point30°
Tue, 2066° / 45°0
66 °
Lily Cache, Tuesday, 20 October
Mostly clear. High 66°, low 45°.
Pressure30.24 inHg
Wind10.6 mph S
Humidity47%
Visibility—
Dew point41°
Wed, 2166° / 53°0.17
66 °
Lily Cache, Wednesday, 21 October
Light rain. High 66°, low 53°.
Pressure30.06 inHg
Wind11.1 mph S
Humidity65%
Visibility—
Dew point51°
Thu, 2267° / 51°0
67 °
Lily Cache, Thursday, 22 October
Clear. High 67°, low 51°.
Pressure30.15 inHg
Wind7.8 mph W
Humidity52%
Visibility—
Dew point46°
Fri, 2369° / 52°0
69 °
Lily Cache, Friday, 23 October
Clear. High 69°, low 52°.
Pressure30.21 inHg
Wind5.3 mph E
Humidity53%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2458° / 45°0.12
58 °
Lily Cache, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high58°
Average low45°
Average precipitation0.12 in
Chance of precipitation35%
Record high80° (1963)
Record low23° (1981)
Sun, 2558° / 43°0.12
58 °
Lily Cache, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.12 in
Chance of precipitation27%
Record high76° (1963)
Record low28° (2006)
Mon, 2657° / 43°0.11
57 °
Lily Cache, Monday, 26 October
Climate normal for this date — 60-year average.
Average high57°
Average low43°
Average precipitation0.11 in
Chance of precipitation30%
Record high80° (1963)
Record low23° (1962)
Tue, 2757° / 42°0.09
57 °
Lily Cache, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.09 in
Chance of precipitation35%
Record high75° (2014)
Record low29° (1962)
Wed, 2856° / 42°0.06
56 °
Lily Cache, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.06 in
Chance of precipitation22%
Record high75° (1999)
Record low26° (1976)
Thu, 2957° / 42°0.06
57 °
Lily Cache, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.06 in
Chance of precipitation22%
Record high79° (2024)
Record low25° (1980)
Fri, 3059° / 43°0.11
59 °
Lily Cache, Friday, 30 October
Climate normal for this date — 60-year average.
Average high59°
Average low43°
Average precipitation0.11 in
Chance of precipitation25%
Record high78° (1971)
Record low24° (1980)
Sat, 3157° / 44°0.14
57 °
Lily Cache, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high57°
Average low44°
Average precipitation0.14 in
Chance of precipitation37%
Record high75° (1974)
Record low27° (1988)
Sun, 0156° / 42°0.17
56 °
Lily Cache, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.17 in
Chance of precipitation38%
Record high75° (2016)
Record low21° (2019)
Mon, 0255° / 41°0.1
55 °
Lily Cache, Monday, 2 November
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.1 in
Chance of precipitation35%
Record high75° (1961)
Record low24° (1991)
Tue, 0354° / 39°0.07
54 °
Lily Cache, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high54°
Average low39°
Average precipitation0.07 in
Chance of precipitation23%
Record high74° (1987)
Record low18° (1991)
Wed, 0454° / 41°0.09
54 °
Lily Cache, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high54°
Average low41°
Average precipitation0.09 in
Chance of precipitation25%
Record high72° (1978)
Record low18° (1991)
Thu, 0554° / 40°0.11
54 °
Lily Cache, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high54°
Average low40°
Average precipitation0.11 in
Chance of precipitation28%
Record high76° (1978)
Record low18° (1991)
Fri, 0653° / 38°0.09
53 °
Lily Cache, Friday, 6 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.09 in
Chance of precipitation32%
Record high72° (1975)
Record low24° (1973)
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 Lily Cache, 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 Lily Cache, 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.