Monthly outlook for Emerald Park, IL: average high 61.3°, average low 49.7°. That is 2.2° above the climate normal for October. Precipitation is expected on 5 days (about 3.1 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 13 October (76.8°), the coolest 27 October (36.8°).
61.3°/49.7°
Average high / low
+2.2°
Above normal
5 / 5
Wet days / normal
3.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 October – 22 October
63.9°
58.6°
+2.9°
23 October – 1 November
57°
54.9°
+1.2°
2 November – 11 November
at normal
50.1°
—
October records over 66 years
86.9°3 October 2025All-time high
26.1°30 October 1988All-time low
Climate normals and records are computed from the nearest reference point — Round Lake Beach (10 mi).
Wed, 1474° / 60°0.01
74 °
Emerald Park, Wednesday, 14 October
Light rain. High 74°, low 60°.
Pressure30.09 inHg
Wind6.2 mph NE
Humidity59%
Visibility6.2 mi
Dew point54°
Thu, 1562° / 56°1.27
62 °
Emerald Park, Thursday, 15 October
Heavy rain. High 62°, low 56°.
Pressure30.03 inHg
Wind7.1 mph E
Humidity98%
Visibility1.1 mi
Dew point58°
Fri, 1655° / 45°0.06
55 °
Emerald Park, Friday, 16 October
Light rain. High 55°, low 45°.
Pressure30.06 inHg
Wind20.3 mph NW
Humidity64%
Visibility6.2 mi
Dew point40°
Sat, 1756° / 37°0
56 °
Emerald Park, Saturday, 17 October
Clear. High 56°, low 37°.
Pressure30.47 inHg
Wind6 mph SW
Humidity48%
Visibility6.2 mi
Dew point32°
Sun, 1862° / 45°0
62 °
Emerald Park, Sunday, 18 October
Mostly clear. High 62°, low 45°.
Pressure30.24 inHg
Wind16.5 mph SW
Humidity51%
Visibility—
Dew point40°
Mon, 1961° / 49°0.14
61 °
Emerald Park, Monday, 19 October
Rain. High 61°, low 49°.
Pressure30.18 inHg
Wind11.1 mph SW
Humidity78%
Visibility—
Dew point50°
Tue, 2059° / 50°0
59 °
Emerald Park, Tuesday, 20 October
Overcast. High 59°, low 50°.
Pressure30.30 inHg
Wind6 mph SE
Humidity93%
Visibility—
Dew point54°
Wed, 2167° / 54°0.06
67 °
Emerald Park, Wednesday, 21 October
Light rain. High 67°, low 54°.
Pressure30.21 inHg
Wind11.1 mph S
Humidity78%
Visibility—
Dew point58°
Thu, 2266° / 63°1.53
66 °
Emerald Park, Thursday, 22 October
Rain. High 66°, low 63°.
Pressure30.03 inHg
Wind18.2 mph S
Humidity90%
Visibility—
Dew point61°
Fri, 2372° / 57°0
72 °
Emerald Park, Friday, 23 October
Light rain. High 72°, low 57°.
Pressure29.85 inHg
Wind24.5 mph SW
Humidity63%
Visibility—
Dew point58°
Sat, 2457° / 46°0
57 °
Emerald Park, Saturday, 24 October
Overcast. High 57°, low 46°.
Pressure30.27 inHg
Wind17 mph W
Humidity50%
Visibility—
Dew point37°
Sun, 2557° / 43°0
57 °
Emerald Park, Sunday, 25 October
Clear. High 57°, low 43°.
Pressure30.21 inHg
Wind12.1 mph SW
Humidity42%
Visibility—
Dew point32°
Mon, 2651° / 41°0
51 °
Emerald Park, Monday, 26 October
Partly cloudy. High 51°, low 41°.
Pressure30.18 inHg
Wind16.4 mph NW
Humidity51%
Visibility—
Dew point31°
Tue, 2751° / 37°0
51 °
Emerald Park, Tuesday, 27 October
Overcast. High 51°, low 37°.
Pressure30.30 inHg
Wind9.2 mph S
Humidity59%
Visibility—
Dew point35°
Wed, 2853° / 45°0.03
53 °
Emerald Park, Wednesday, 28 October
Light rain. High 53°, low 45°.
Pressure30.06 inHg
Wind14.1 mph S
Humidity60%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2954° / 42°0.06
54 °
Emerald Park, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high54°
Average low42°
Average precipitation0.06 in
Chance of precipitation20%
Record high78° (2024)
Record low28° (1988)
Fri, 3056° / 43°0.09
56 °
Emerald Park, Friday, 30 October
Climate normal for this date — 60-year average.
Average high56°
Average low43°
Average precipitation0.09 in
Chance of precipitation30%
Record high76° (2024)
Record low26° (1988)
Sat, 3154° / 43°0.12
54 °
Emerald Park, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high54°
Average low43°
Average precipitation0.12 in
Chance of precipitation42%
Record high71° (1974)
Record low28° (2019)
Sun, 0153° / 42°0.16
53 °
Emerald Park, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high53°
Average low42°
Average precipitation0.16 in
Chance of precipitation45%
Record high71° (2016)
Record low20° (2019)
Mon, 0252° / 41°0.14
52 °
Emerald Park, Monday, 2 November
Climate normal for this date — 60-year average.
Average high52°
Average low41°
Average precipitation0.14 in
Chance of precipitation37%
Record high72° (1961)
Record low23° (1991)
Tue, 0351° / 40°0.06
51 °
Emerald Park, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.06 in
Chance of precipitation30%
Record high70° (1987)
Record low17° (1991)
Wed, 0451° / 41°0.1
51 °
Emerald Park, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.1 in
Chance of precipitation32%
Record high69° (2022)
Record low15° (1991)
Thu, 0551° / 40°0.12
51 °
Emerald Park, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.12 in
Chance of precipitation28%
Record high71° (1978)
Record low20° (1991)
Fri, 0651° / 38°0.09
51 °
Emerald Park, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.09 in
Chance of precipitation30%
Record high70° (2020)
Record low22° (1991)
Sat, 0750° / 38°0.05
50 °
Emerald Park, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.05 in
Chance of precipitation18%
Record high68° (2020)
Record low14° (1991)
Sun, 0850° / 38°0.04
50 °
Emerald Park, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.04 in
Chance of precipitation18%
Record high73° (2020)
Record low15° (1991)
Mon, 0950° / 38°0.11
50 °
Emerald Park, Monday, 9 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.11 in
Chance of precipitation33%
Record high73° (2020)
Record low20° (1991)
Tue, 1049° / 37°0.11
49 °
Emerald Park, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.11 in
Chance of precipitation38%
Record high72° (2022)
Record low16° (2017)
Wed, 1146° / 35°0.08
46 °
Emerald Park, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.08 in
Chance of precipitation35%
Record high67° (1964)
Record low15° (2019)
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 Emerald Park, 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 Emerald Park, 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.