Monthly outlook for Crest Hill, IL: average high 59.5°, average low 42.1°. That is 1° above the climate normal for October. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 21 October (70.3°), the coolest 28 October (28.1°).
59.5°/42.1°
Average high / low
+1°
Above normal
3 / 5
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
62°
58.8°
+1.8°
29 October – 7 November
55.4°
54.9°
+0.3°
8 November – 17 November
at normal
49.3°
—
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 (4 mi).
Tue, 2069° / 43°0
69 °
Crest Hill, Tuesday, 20 October
Clear. High 69°, low 43°.
Pressure30.39 inHg
Wind2.7 mph SE
Humidity48%
Visibility6.2 mi
Dew point44°
Wed, 2170° / 43°0
70 °
Crest Hill, Wednesday, 21 October
Clear. High 70°, low 43°.
Pressure30.27 inHg
Wind2.1 mph SW
Humidity56%
Visibility6.2 mi
Dew point48°
Thu, 2269° / 49°0
69 °
Crest Hill, Thursday, 22 October
Light rain. High 69°, low 49°.
Pressure30.30 inHg
Wind3.8 mph NE
Humidity67%
Visibility6.2 mi
Dew point56°
Fri, 2363° / 45°0
63 °
Crest Hill, Friday, 23 October
Mostly clear. High 63°, low 45°.
Pressure30.39 inHg
Wind4.9 mph SE
Humidity71%
Visibility6.2 mi
Dew point49°
Sat, 2463° / 44°0
63 °
Crest Hill, Saturday, 24 October
Partly cloudy. High 63°, low 44°.
Pressure30.39 inHg
Wind6.8 mph S
Humidity55%
Visibility—
Dew point43°
Sun, 2567° / 46°0.02
67 °
Crest Hill, Sunday, 25 October
Light rain. High 67°, low 46°.
Pressure30.39 inHg
Wind7.3 mph SW
Humidity57%
Visibility—
Dew point47°
Mon, 2660° / 53°0
60 °
Crest Hill, Monday, 26 October
Overcast. High 60°, low 53°.
Pressure30.30 inHg
Wind8.3 mph NE
Humidity39%
Visibility—
Dew point34°
Tue, 2751° / 35°0.3
51 °
Crest Hill, Tuesday, 27 October
Rain. High 51°, low 35°.
Pressure30.27 inHg
Wind14.7 mph NW
Humidity60%
Visibility—
Dew point32°
Wed, 2840° / 28°0
40 °
Crest Hill, Wednesday, 28 October
Clear. High 40°, low 28°.
Pressure30.45 inHg
Wind10.4 mph NW
Humidity38%
Visibility—
Dew point14°
Thu, 2948° / 29°0
48 °
Crest Hill, Thursday, 29 October
Mostly clear. High 48°, low 29°.
Pressure30.24 inHg
Wind10.9 mph W
Humidity34%
Visibility—
Dew point17°
Fri, 3054° / 34°0
54 °
Crest Hill, Friday, 30 October
Clear. High 54°, low 34°.
Pressure30.12 inHg
Wind10.6 mph SW
Humidity37%
Visibility—
Dew point24°
Sat, 3161° / 42°0
61 °
Crest Hill, Saturday, 31 October
Overcast. High 61°, low 42°.
Pressure30.15 inHg
Wind8.9 mph S
Humidity35%
Visibility—
Dew point29°
Sun, 0158° / 48°0.05
58 °
Crest Hill, Sunday, 1 November
Light rain. High 58°, low 48°.
Pressure30.12 inHg
Wind10.4 mph S
Humidity39%
Visibility—
Dew point32°
Mon, 0255° / 50°0.24
55 °
Crest Hill, Monday, 2 November
Light rain. High 55°, low 50°.
Pressure29.91 inHg
Wind9.4 mph NW
Humidity97%
Visibility—
Dew point51°
Tue, 0356° / 44°0
56 °
Crest Hill, Tuesday, 3 November
Partly cloudy. High 56°, low 44°.
Pressure29.94 inHg
Wind13.8 mph NW
Humidity60%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0454° / 41°0.09
54 °
Crest Hill, 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 °
Crest Hill, 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 °
Crest Hill, 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)
Sat, 0752° / 38°0.06
52 °
Crest Hill, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.06 in
Chance of precipitation20%
Record high70° (2020)
Record low18° (1991)
Sun, 0852° / 38°0.06
52 °
Crest Hill, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.06 in
Chance of precipitation18%
Record high74° (2020)
Record low12° (1991)
Mon, 0953° / 38°0.13
53 °
Crest Hill, Monday, 9 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.13 in
Chance of precipitation38%
Record high73° (1999)
Record low17° (1991)
Tue, 1051° / 37°0.13
51 °
Crest Hill, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.13 in
Chance of precipitation35%
Record high73° (2020)
Record low18° (2018)
Wed, 1149° / 35°0.07
49 °
Crest Hill, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.07 in
Chance of precipitation28%
Record high72° (1964)
Record low18° (2019)
Thu, 1247° / 34°0.07
47 °
Crest Hill, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.07 in
Chance of precipitation25%
Record high69° (1964)
Record low8° (2019)
Fri, 1348° / 33°0.06
48 °
Crest Hill, Friday, 13 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.06 in
Chance of precipitation18%
Record high71° (1999)
Record low9° (1986)
Sat, 1449° / 34°0.07
49 °
Crest Hill, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.07 in
Chance of precipitation32%
Record high71° (1971)
Record low13° (1986)
Sun, 1548° / 35°0.09
48 °
Crest Hill, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.09 in
Chance of precipitation28%
Record high69° (2025)
Record low19° (1982)
Mon, 1648° / 34°0.05
48 °
Crest Hill, Monday, 16 November
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.05 in
Chance of precipitation18%
Record high66° (1971)
Record low20° (1997)
Tue, 1748° / 35°0.09
48 °
Crest Hill, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.09 in
Chance of precipitation25%
Record high71° (2016)
Record low16° (2005)
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 Crest Hill, 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 Crest Hill, 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.