Monthly outlook for Mokena, IL: average high 64.9°, average low 51.3°. That is 2.5° above the climate normal for October. Precipitation is expected on 4 days (about 2.0 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 12 October (84.3°), the coolest 18 October (32.2°).
64.9°/51.3°
Average high / low
+2.5°
Above normal
4 / 5
Wet days / normal
2.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
65.4°
61.5°
+2.1°
21 October – 30 October
64.1°
57.9°
+3.4°
31 October – 9 November
at normal
53.6°
—
October records over 66 years
87.3°7 October 2007All-time high
22.5°24 October 1981All-time low
Climate normals and records are computed from the nearest reference point — Arbury Hills (2 mi).
Mon, 1284° / 66°0
84 °
Mokena, Monday, 12 October
Overcast. High 84°, low 66°.
Pressure29.85 inHg
Wind9.7 mph SW
Humidity61%
Visibility6.2 mi
Dew point63°
Tue, 1382° / 69°0.03
82 °
Mokena, Tuesday, 13 October
Light rain. High 82°, low 69°.
Pressure29.83 inHg
Wind10.4 mph W
Humidity66%
Visibility6.2 mi
Dew point67°
Wed, 1473° / 60°0.22
73 °
Mokena, Wednesday, 14 October
Rain. High 73°, low 60°.
Pressure30.06 inHg
Wind6.3 mph NE
Humidity69%
Visibility6.2 mi
Dew point61°
Thu, 1561° / 57°1.31
61 °
Mokena, Thursday, 15 October
Rain. High 61°, low 57°.
Pressure30.09 inHg
Wind9.2 mph NE
Humidity96%
Visibility—
Dew point58°
Fri, 1659° / 48°0.02
59 °
Mokena, Friday, 16 October
Light rain. High 59°, low 48°.
Pressure30.33 inHg
Wind17.5 mph N
Humidity52%
Visibility—
Dew point41°
Sat, 1743° / 35°0
43 °
Mokena, Saturday, 17 October
Clear. High 43°, low 35°.
Pressure30.50 inHg
Wind12.7 mph N
Humidity33%
Visibility—
Dew point14°
Sun, 1851° / 32°0
51 °
Mokena, Sunday, 18 October
Partly cloudy. High 51°, low 32°.
Pressure30.47 inHg
Wind15.5 mph SW
Humidity28%
Visibility—
Dew point15°
Mon, 1960° / 42°0
60 °
Mokena, Monday, 19 October
Mostly clear. High 60°, low 42°.
Pressure30.33 inHg
Wind14.7 mph SW
Humidity38%
Visibility—
Dew point30°
Tue, 2065° / 45°0
65 °
Mokena, Tuesday, 20 October
Mostly clear. High 65°, low 45°.
Pressure30.33 inHg
Wind7 mph S
Humidity34%
Visibility—
Dew point32°
Wed, 2164° / 50°0
64 °
Mokena, Wednesday, 21 October
Overcast. High 64°, low 50°.
Pressure30.27 inHg
Wind10.7 mph S
Humidity35%
Visibility—
Dew point34°
Thu, 2266° / 52°0
66 °
Mokena, Thursday, 22 October
Overcast. High 66°, low 52°.
Pressure30.24 inHg
Wind7.1 mph S
Humidity42%
Visibility—
Dew point39°
Fri, 2365° / 56°0.06
65 °
Mokena, Friday, 23 October
Light rain. High 65°, low 56°.
Pressure30.15 inHg
Wind6.7 mph SW
Humidity49%
Visibility—
Dew point45°
Sat, 2464° / 56°0
64 °
Mokena, Saturday, 24 October
Overcast. High 64°, low 56°.
Pressure30.18 inHg
Wind8.6 mph NE
Humidity63%
Visibility—
Dew point49°
Sun, 2573° / 53°0.33
73 °
Mokena, Sunday, 25 October
Rain. High 73°, low 53°.
Pressure29.91 inHg
Wind14.9 mph NW
Humidity53%
Visibility—
Dew point50°
Mon, 2653° / 45°0
53 °
Mokena, Monday, 26 October
Partly cloudy. High 53°, low 45°.
Pressure29.80 inHg
Wind17.3 mph W
Humidity56%
Visibility—
Dew point36°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2756° / 42°0.09
56 °
Mokena, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.09 in
Chance of precipitation32%
Record high74° (1984)
Record low29° (1962)
Wed, 2856° / 42°0.06
56 °
Mokena, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.06 in
Chance of precipitation20%
Record high74° (1999)
Record low26° (1967)
Thu, 2956° / 42°0.06
56 °
Mokena, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.06 in
Chance of precipitation20%
Record high78° (2024)
Record low26° (1980)
Fri, 3058° / 43°0.11
58 °
Mokena, Friday, 30 October
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.11 in
Chance of precipitation30%
Record high77° (1971)
Record low25° (1980)
Sat, 3157° / 44°0.15
57 °
Mokena, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high57°
Average low44°
Average precipitation0.15 in
Chance of precipitation38%
Record high75° (1974)
Record low27° (2023)
Sun, 0155° / 42°0.17
55 °
Mokena, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high55°
Average low42°
Average precipitation0.17 in
Chance of precipitation42%
Record high75° (2016)
Record low23° (2019)
Mon, 0255° / 41°0.12
55 °
Mokena, Monday, 2 November
Climate normal for this date — 60-year average.
Average high55°
Average low41°
Average precipitation0.12 in
Chance of precipitation40%
Record high75° (1961)
Record low24° (1991)
Tue, 0353° / 39°0.07
53 °
Mokena, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.07 in
Chance of precipitation22%
Record high73° (1987)
Record low18° (1991)
Wed, 0453° / 41°0.09
53 °
Mokena, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.09 in
Chance of precipitation28%
Record high72° (2015)
Record low18° (1991)
Thu, 0553° / 40°0.12
53 °
Mokena, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.12 in
Chance of precipitation30%
Record high76° (1978)
Record low18° (1991)
Fri, 0653° / 38°0.08
53 °
Mokena, Friday, 6 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.08 in
Chance of precipitation35%
Record high72° (1975)
Record low24° (1973)
Sat, 0752° / 38°0.06
52 °
Mokena, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.06 in
Chance of precipitation20%
Record high69° (2020)
Record low20° (1991)
Sun, 0852° / 38°0.06
52 °
Mokena, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.06 in
Chance of precipitation22%
Record high74° (2020)
Record low13° (1991)
Mon, 0952° / 38°0.14
52 °
Mokena, Monday, 9 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.14 in
Chance of precipitation35%
Record high72° (1999)
Record low17° (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 Mokena, 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 Mokena, 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.