Monthly outlook for Riverwoods, IL: average high 65.3°, average low 51.5°. That is 5.1° above the climate normal for October. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 24 October (73.4°), the coolest 17 October (38.2°).
65.3°/51.5°
Average high / low
+5.1°
Above normal
3 / 5
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
64.9°
57.3°
+4.2°
25 October – 3 November
65.9°
53.5°
+6.9°
4 November – 13 November
at normal
48.7°
—
October records over 66 years
87.4°3 October 2025All-time high
27.5°31 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Highwood (5 mi).
Fri, 1660° / 45°0.04
60 °
Riverwoods, Friday, 16 October
Light rain. High 60°, low 45°.
Pressure30.03 inHg
Wind14.2 mph NW
Humidity68%
Visibility6.2 mi
Dew point43°
Sat, 1755° / 38°0
55 °
Riverwoods, Saturday, 17 October
Clear. High 55°, low 38°.
Pressure30.53 inHg
Wind5.9 mph SW
Humidity47%
Visibility6.2 mi
Dew point31°
Sun, 1860° / 42°0
60 °
Riverwoods, Sunday, 18 October
Clear. High 60°, low 42°.
Pressure30.45 inHg
Wind12.1 mph SW
Humidity57%
Visibility6.2 mi
Dew point41°
Mon, 1962° / 42°0
62 °
Riverwoods, Monday, 19 October
Overcast. High 62°, low 42°.
Pressure30.39 inHg
Wind5.3 mph S
Humidity57%
Visibility6.2 mi
Dew point43°
Tue, 2065° / 44°0
65 °
Riverwoods, Tuesday, 20 October
Clear. High 65°, low 44°.
Pressure30.36 inHg
Wind5.3 mph E
Humidity48%
Visibility—
Dew point42°
Wed, 2163° / 48°0
63 °
Riverwoods, Wednesday, 21 October
Partly cloudy. High 63°, low 48°.
Pressure30.36 inHg
Wind6.6 mph E
Humidity54%
Visibility—
Dew point43°
Thu, 2270° / 55°0
70 °
Riverwoods, Thursday, 22 October
Partly cloudy. High 70°, low 55°.
Pressure30.24 inHg
Wind7.3 mph SW
Humidity36%
Visibility—
Dew point39°
Fri, 2372° / 58°0
72 °
Riverwoods, Friday, 23 October
Partly cloudy. High 72°, low 58°.
Pressure30.21 inHg
Wind8.7 mph SE
Humidity35%
Visibility—
Dew point40°
Sat, 2473° / 62°0
73 °
Riverwoods, Saturday, 24 October
Overcast. High 73°, low 62°.
Pressure30.15 inHg
Wind10.2 mph SW
Humidity42%
Visibility—
Dew point45°
Sun, 2568° / 56°0
68 °
Riverwoods, Sunday, 25 October
Clear. High 68°, low 56°.
Pressure30.42 inHg
Wind6.2 mph NW
Humidity32%
Visibility—
Dew point35°
Mon, 2662° / 54°0
62 °
Riverwoods, Monday, 26 October
Overcast. High 62°, low 54°.
Pressure30.50 inHg
Wind7.9 mph E
Humidity41%
Visibility—
Dew point37°
Tue, 2768° / 56°0
68 °
Riverwoods, Tuesday, 27 October
Overcast. High 68°, low 56°.
Pressure30.24 inHg
Wind8.5 mph S
Humidity54%
Visibility—
Dew point49°
Wed, 2869° / 60°0.06
69 °
Riverwoods, Wednesday, 28 October
Light rain. High 69°, low 60°.
Pressure30.24 inHg
Wind8.6 mph SW
Humidity38%
Visibility—
Dew point41°
Thu, 2971° / 60°0.13
71 °
Riverwoods, Thursday, 29 October
Light rain. High 71°, low 60°.
Pressure29.94 inHg
Wind14.7 mph SW
Humidity48%
Visibility—
Dew point49°
Fri, 3058° / 48°0
58 °
Riverwoods, Friday, 30 October
Overcast. High 58°, low 48°.
Pressure30.30 inHg
Wind9.5 mph NW
Humidity37%
Visibility—
Dew point28°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3154° / 45°0.13
54 °
Riverwoods, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high54°
Average low45°
Average precipitation0.13 in
Chance of precipitation42%
Record high71° (2024)
Record low28° (2019)
Sun, 0153° / 44°0.17
53 °
Riverwoods, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.17 in
Chance of precipitation42%
Record high67° (2016)
Record low20° (2019)
Mon, 0252° / 43°0.13
52 °
Riverwoods, Monday, 2 November
Climate normal for this date — 60-year average.
Average high52°
Average low43°
Average precipitation0.13 in
Chance of precipitation38%
Record high68° (1961)
Record low25° (1991)
Tue, 0351° / 42°0.06
51 °
Riverwoods, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.06 in
Chance of precipitation23%
Record high70° (2022)
Record low20° (1991)
Wed, 0451° / 43°0.09
51 °
Riverwoods, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low43°
Average precipitation0.09 in
Chance of precipitation28%
Record high69° (2022)
Record low18° (1991)
Thu, 0551° / 42°0.12
51 °
Riverwoods, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.12 in
Chance of precipitation28%
Record high68° (2022)
Record low22° (1991)
Fri, 0651° / 40°0.09
51 °
Riverwoods, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.09 in
Chance of precipitation28%
Record high70° (2020)
Record low25° (1991)
Sat, 0750° / 41°0.05
50 °
Riverwoods, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low41°
Average precipitation0.05 in
Chance of precipitation18%
Record high68° (2020)
Record low21° (1991)
Sun, 0849° / 41°0.06
49 °
Riverwoods, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low41°
Average precipitation0.06 in
Chance of precipitation17%
Record high72° (2020)
Record low18° (2019)
Mon, 0950° / 40°0.12
50 °
Riverwoods, Monday, 9 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.12 in
Chance of precipitation38%
Record high72° (2020)
Record low23° (2018)
Tue, 1049° / 40°0.11
49 °
Riverwoods, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high49°
Average low40°
Average precipitation0.11 in
Chance of precipitation37%
Record high72° (2022)
Record low18° (2017)
Wed, 1147° / 38°0.08
47 °
Riverwoods, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high47°
Average low38°
Average precipitation0.08 in
Chance of precipitation33%
Record high64° (1964)
Record low16° (2019)
Thu, 1245° / 36°0.06
45 °
Riverwoods, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high45°
Average low36°
Average precipitation0.06 in
Chance of precipitation20%
Record high63° (1964)
Record low7° (2019)
Fri, 1345° / 36°0.05
45 °
Riverwoods, Friday, 13 November
Climate normal for this date — 60-year average.
Average high45°
Average low36°
Average precipitation0.05 in
Chance of precipitation23%
Record high63° (1999)
Record low8° (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 Riverwoods, 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 Riverwoods, 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.