Monthly outlook for Riverwoods, IL: average high 62.5°, average low 50°. That is 3.7° above the climate normal for October. Precipitation is expected on 1 day (about 0.5 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 23 October (71.4°), the coolest 17 October (37.9°).
62.5°/50°
Average high / low
+3.7°
Above normal
1 / 5
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
64.3°
56.9°
+4.1°
26 October – 4 November
59.5°
53.1°
+3.6°
5 November – 14 November
at normal
48.2°
—
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).
Sat, 1755° / 38°0
55 °
Riverwoods, Saturday, 17 October
Clear. High 55°, low 38°.
Pressure30.53 inHg
Wind5.8 mph SW
Humidity48%
Visibility6.2 mi
Dew point32°
Sun, 1860° / 42°0
60 °
Riverwoods, Sunday, 18 October
Clear. High 60°, low 42°.
Pressure30.45 inHg
Wind12.4 mph SW
Humidity57%
Visibility6.2 mi
Dew point41°
Mon, 1962° / 42°0
62 °
Riverwoods, Monday, 19 October
Clear. High 62°, low 42°.
Pressure30.39 inHg
Wind4.9 mph S
Humidity60%
Visibility6.2 mi
Dew point44°
Tue, 2065° / 47°0
65 °
Riverwoods, Tuesday, 20 October
Clear. High 65°, low 47°.
Pressure30.36 inHg
Wind4.8 mph E
Humidity49%
Visibility—
Dew point43°
Wed, 2167° / 46°0
67 °
Riverwoods, Wednesday, 21 October
Clear. High 67°, low 46°.
Pressure30.30 inHg
Wind4.5 mph S
Humidity45%
Visibility—
Dew point41°
Thu, 2271° / 56°0
71 °
Riverwoods, Thursday, 22 October
Overcast. High 71°, low 56°.
Pressure30.24 inHg
Wind5.6 mph S
Humidity32%
Visibility—
Dew point37°
Fri, 2371° / 59°0
71 °
Riverwoods, Friday, 23 October
Partly cloudy. High 71°, low 59°.
Pressure30.21 inHg
Wind9.3 mph SE
Humidity32%
Visibility—
Dew point38°
Sat, 2468° / 59°0
68 °
Riverwoods, Saturday, 24 October
Overcast. High 68°, low 59°.
Pressure30.24 inHg
Wind7.4 mph SE
Humidity31%
Visibility—
Dew point35°
Sun, 2568° / 57°0
68 °
Riverwoods, Sunday, 25 October
Overcast. High 68°, low 57°.
Pressure30.27 inHg
Wind5.6 mph E
Humidity37%
Visibility—
Dew point39°
Mon, 2663° / 57°0
63 °
Riverwoods, Monday, 26 October
Overcast. High 63°, low 57°.
Pressure30.09 inHg
Wind9.6 mph SE
Humidity52%
Visibility—
Dew point45°
Tue, 2761° / 53°0
61 °
Riverwoods, Tuesday, 27 October
Overcast. High 61°, low 53°.
Pressure30.00 inHg
Wind10.9 mph W
Humidity58%
Visibility—
Dew point44°
Wed, 2858° / 53°0.44
58 °
Riverwoods, Wednesday, 28 October
Rain. High 58°, low 53°.
Pressure29.74 inHg
Wind13.2 mph E
Humidity72%
Visibility—
Dew point46°
Thu, 2956° / 52°0.02
56 °
Riverwoods, Thursday, 29 October
Light rain. High 56°, low 52°.
Pressure29.80 inHg
Wind9.4 mph W
Humidity86%
Visibility—
Dew point50°
Fri, 3059° / 48°0
59 °
Riverwoods, Friday, 30 October
Clear. High 59°, low 48°.
Pressure29.97 inHg
Wind12.8 mph W
Humidity39%
Visibility—
Dew point33°
Sat, 3159° / 44°0
59 °
Riverwoods, Saturday, 31 October
Partly cloudy. High 59°, low 44°.
Pressure29.97 inHg
Wind5.7 mph W
Humidity40%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sat, 1446° / 37°0.07
46 °
Riverwoods, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high46°
Average low37°
Average precipitation0.07 in
Chance of precipitation30%
Record high64° (2025)
Record low18° (1986)
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.